/* roulang page: index */
:root {
            --bg-page: #F5F7FC;
            --bg-section: #FFFFFF;
            --bg-soft: #F0F4FA;
            --bg-soft-2: #E8EEF7;
            --primary: #1F3A93;
            --primary-bright: #2B4EFF;
            --primary-dark: #162A6B;
            --neon: #00D0FF;
            --neon-purple: #7A5CFF;
            --ink: #0F172A;
            --text-main: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: rgba(15, 40, 100, 0.08);
            --border-strong: rgba(15, 40, 100, 0.14);
            --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
            --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-img: 14px;
            --nav-bg: #0A0E1A;
            --nav-bg-light: #0D1226;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 88px;
            --section-pad-mobile: 48px;
            --transition-fast: 0.22s ease;
            --transition-med: 0.32s ease;
            --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-bright);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: var(--radius-btn);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--ink);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }

        h1 {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            letter-spacing: 0.01em;
        }

        h2 {
            font-size: clamp(22px, 2.8vw, 32px);
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            padding-left: 18px;
        }

        h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.12em;
            width: 4px;
            height: 1.15em;
            background: linear-gradient(180deg, var(--primary-bright), var(--neon));
            border-radius: 4px;
        }

        h3 {
            font-size: clamp(17px, 1.6vw, 22px);
            font-weight: 600;
            margin-bottom: 10px;
        }

        p {
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .text-muted-custom {
            color: var(--text-muted);
        }

        .text-small {
            font-size: 14px;
            color: var(--text-muted);
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1200px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 576px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }

        @media (max-width: 768px) {
            section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.15);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .bg-white-section {
            background: var(--bg-section);
        }

        .bg-soft-section {
            background: var(--bg-soft);
        }

        .bg-soft-2-section {
            background: var(--bg-soft-2);
        }

        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--nav-bg);
            padding: 0;
            height: 68px;
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple), var(--neon)) 1;
            border-bottom: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
        }

        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }

        .navbar-custom .navbar-brand span {
            color: var(--neon);
        }

        .navbar-custom .navbar-brand i {
            color: var(--neon);
            font-size: 1.1rem;
        }

        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .navbar-custom .nav-link:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar-custom .nav-link.active {
            color: var(--neon);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
            background: rgba(0, 208, 255, 0.08);
        }

        .navbar-custom .nav-link.active::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--neon);
            margin: 4px auto 0;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
        }

        .navbar-custom .btn-nav-cta {
            background: var(--neon);
            color: #0A0E1A;
            font-weight: 700;
            font-size: 13px;
            padding: 8px 20px;
            border-radius: 24px;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .navbar-custom .btn-nav-cta:hover {
            background: #33D9FF;
            color: #0A0E1A;
            box-shadow: 0 0 18px rgba(0, 208, 255, 0.45);
            transform: translateY(-1px);
        }

        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
            background: transparent;
        }

        .navbar-custom .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 208, 255, 0.3);
            border-color: var(--neon);
        }

        .navbar-custom .navbar-collapse {
            background: transparent;
        }

        @media (max-width: 991px) {
            .navbar-custom .navbar-collapse {
                background: var(--nav-bg-light);
                border-radius: 0 0 14px 14px;
                padding: 16px 20px 20px;
                box-shadow: 0 12px 32px rgba(10, 20, 50, 0.3);
                margin-top: 0;
            }
            .navbar-custom .nav-link {
                padding: 10px 12px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
            .navbar-custom .btn-nav-cta {
                margin-top: 10px;
                width: 100%;
                text-align: center;
            }
        }

        /* ========== 按钮 ========== */
        .btn-custom-primary {
            background: var(--primary-bright);
            color: #FFFFFF;
            border: none;
            padding: 13px 30px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(43, 78, 255, 0.25);
        }

        .btn-custom-primary:hover {
            background: #3D5EFF;
            box-shadow: 0 6px 22px rgba(43, 78, 255, 0.38);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-custom-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(43, 78, 255, 0.2);
        }

        .btn-custom-neon {
            background: var(--neon);
            color: #0A0E1A;
            border: none;
            padding: 13px 30px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(0, 208, 255, 0.3);
        }

        .btn-custom-neon:hover {
            background: #33D9FF;
            box-shadow: 0 6px 24px rgba(0, 208, 255, 0.5);
            transform: translateY(-2px);
            color: #0A0E1A;
        }

        .btn-custom-ghost {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-custom-ghost:hover {
            background: rgba(31, 58, 147, 0.06);
            border-color: var(--primary-bright);
            color: var(--primary-bright);
            transform: translateY(-1px);
        }

        .btn-custom-light {
            background: rgba(255, 255, 255, 0.12);
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-custom-light:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.4);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        /* ========== 卡片 ========== */
        .card-custom {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-med);
            overflow: hidden;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(0, 208, 255, 0.2);
        }

        .card-custom .card-body {
            padding: 22px 24px 24px;
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            margin-bottom: 14px;
            background: rgba(43, 78, 255, 0.07);
            color: var(--primary-bright);
            border: 1px solid rgba(43, 78, 255, 0.12);
        }

        .card-icon-neon {
            background: rgba(0, 208, 255, 0.08);
            color: #0A94B8;
            border-color: rgba(0, 208, 255, 0.18);
        }

        .badge-custom {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 16px;
            background: rgba(31, 58, 147, 0.06);
            color: var(--primary);
            border: 1px solid rgba(31, 58, 147, 0.12);
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .badge-custom-neon {
            background: rgba(0, 208, 255, 0.07);
            color: #0A809F;
            border-color: rgba(0, 208, 255, 0.2);
        }

        /* ========== 图片位 ========== */
        .img-placeholder {
            background: var(--bg-soft-2);
            border: 1px solid var(--border);
            border-radius: var(--radius-img);
            overflow: hidden;
            position: relative;
            min-height: 120px;
        }

        .img-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-med);
        }

        .img-placeholder:hover img {
            transform: scale(1.03);
        }

        .img-placeholder .img-fallback {
            background: linear-gradient(135deg, #E8EEF7 0%, #D5E0F0 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 13px;
            min-height: 100%;
        }

        /* ========== Hero ========== */
        .hero-section {
            background: linear-gradient(180deg, #FFFFFF 0%, #F5F7FC 100%);
            padding-top: 64px;
            padding-bottom: 56px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple), var(--neon));
            opacity: 0.5;
        }

        .hero-badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .hero-badge {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            background: #FFFFFF;
            border: 1px solid var(--border-strong);
            padding: 5px 14px;
            border-radius: 20px;
            transition: all var(--transition-fast);
        }

        .hero-badge:hover {
            border-color: var(--neon);
            box-shadow: 0 0 12px rgba(0, 208, 255, 0.2);
        }

        .hero-demo-panel {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(10, 20, 50, 0.1);
            position: relative;
        }

        .hero-demo-panel .demo-header {
            background: var(--nav-bg-light);
            padding: 10px 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .hero-demo-panel .demo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }

        .hero-demo-panel .demo-dot.red {
            background: #FF5F57;
        }
        .hero-demo-panel .demo-dot.yellow {
            background: #FFBD2E;
        }
        .hero-demo-panel .demo-dot.green {
            background: #28C840;
        }

        .hero-demo-panel .demo-title {
            color: rgba(255, 255, 255, 0.7);
            font-size: 12px;
            margin-left: 8px;
        }

        .hero-demo-panel .demo-body {
            padding: 0;
            min-height: 280px;
        }

        .hero-demo-panel .demo-body img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            display: block;
        }

        .hero-demo-panel .demo-footer {
            background: #F8FAFE;
            padding: 14px 18px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
            gap: 8px;
        }

        .hero-demo-panel .demo-status {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-demo-panel .demo-status i {
            color: #28C840;
            font-size: 10px;
        }

        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 22px;
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-item .stat-number {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary-bright);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .hero-stat-item .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ========== 数据横带 ========== */
        .data-strip {
            background: var(--nav-bg-light);
            padding: 36px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .data-strip .strip-item {
            text-align: center;
            padding: 12px 20px;
            position: relative;
        }

        .data-strip .strip-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 50px;
            background: rgba(255, 255, 255, 0.08);
        }

        .data-strip .strip-number {
            font-size: clamp(30px, 3vw, 44px);
            font-weight: 800;
            color: var(--neon);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
            line-height: 1.15;
        }

        .data-strip .strip-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
            letter-spacing: 0.03em;
        }

        @media (max-width: 768px) {
            .data-strip .strip-item:not(:last-child)::after {
                display: none;
            }
            .data-strip .strip-item {
                padding: 8px 10px;
            }
        }

        /* ========== 服务板块 ========== */
        .service-grid-custom {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        @media (max-width: 768px) {
            .service-grid-custom {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        .service-card-compact {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 20px 22px;
            transition: all var(--transition-fast);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .service-card-compact:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(0, 208, 255, 0.25);
        }

        .service-card-compact .sc-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            background: rgba(43, 78, 255, 0.07);
            color: var(--primary-bright);
        }

        .service-card-compact .sc-title {
            font-weight: 600;
            font-size: 16px;
            color: var(--ink);
            margin-bottom: 4px;
        }

        .service-card-compact .sc-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }

        /* ========== 案例/横向交替卡片 ========== */
        .case-row {
            display: flex;
            gap: 28px;
            align-items: center;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .case-row.reverse {
            flex-direction: row-reverse;
        }

        .case-row .case-image {
            flex: 1 1 42%;
            min-width: 280px;
        }

        .case-row .case-content {
            flex: 1 1 50%;
            min-width: 280px;
        }

        .case-row .case-image .img-placeholder {
            min-height: 220px;
        }

        .case-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            padding: 3px 12px;
            border-radius: 14px;
            margin-bottom: 10px;
        }

        /* ========== 方案要点 ========== */
        .plan-check-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .plan-check-list li {
            padding: 10px 0 10px 32px;
            position: relative;
            font-size: 15px;
            color: var(--text-main);
            border-bottom: 1px solid var(--border);
        }

        .plan-check-list li:last-child {
            border-bottom: none;
        }

        .plan-check-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 12px;
            color: var(--neon);
            font-size: 15px;
            text-shadow: 0 0 8px rgba(0, 208, 255, 0.4);
        }

        /* ========== 排行列表 ========== */
        .rank-list {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .rank-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 20px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition-fast);
        }

        .rank-list-item:last-child {
            border-bottom: none;
        }

        .rank-list-item:hover {
            background: rgba(0, 208, 255, 0.03);
        }

        .rank-number {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-bright);
            width: 38px;
            text-align: center;
            font-variant-numeric: tabular-nums;
        }

        .rank-number.highlight {
            color: var(--neon);
            text-shadow: 0 0 10px rgba(0, 208, 255, 0.35);
        }

        .rank-title {
            flex: 1;
            font-weight: 600;
            font-size: 15px;
            color: var(--ink);
        }

        .rank-metric {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .rank-metric i {
            font-size: 12px;
        }

        /* ========== 优惠阶梯 ========== */
        .tier-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-med);
            height: 100%;
            position: relative;
        }

        .tier-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }

        .tier-card.featured {
            border-color: rgba(0, 208, 255, 0.35);
            box-shadow: 0 0 20px rgba(0, 208, 255, 0.12);
        }

        .tier-card .tier-badge {
            position: absolute;
            top: -12px;
            right: 18px;
            background: var(--neon);
            color: #0A0E1A;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 14px;
            letter-spacing: 0.03em;
        }

        .tier-card .tier-name {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .tier-card .tier-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .tier-card .tier-features {
            list-style: none;
            padding: 0;
            margin: 0 0 18px;
        }

        .tier-card .tier-features li {
            padding: 6px 0 6px 26px;
            position: relative;
            font-size: 14px;
            color: var(--text-main);
        }

        .tier-card .tier-features li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 400;
            position: absolute;
            left: 0;
            top: 7px;
            color: var(--primary-bright);
            font-size: 14px;
        }

        /* ========== 评价卡片 ========== */
        .review-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 22px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
            height: 100%;
        }

        .review-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }

        .review-card .review-stars {
            color: #F59E0B;
            font-size: 13px;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .review-card .review-text {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.75;
            margin-bottom: 14px;
        }

        .review-card .review-user {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-card .review-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-bright), var(--neon));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 14px;
        }

        .review-card .review-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
        }

        .review-card .review-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== 资讯列表 ========== */
        .news-list-item {
            display: flex;
            gap: 18px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition-fast);
        }

        .news-list-item:last-child {
            border-bottom: none;
        }

        .news-list-item:hover {
            padding-left: 6px;
        }

        .news-list-item .news-date {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
            width: 80px;
            font-variant-numeric: tabular-nums;
        }

        .news-list-item .news-content {
            flex: 1;
        }

        .news-list-item .news-title {
            font-weight: 600;
            font-size: 15px;
            color: var(--ink);
            margin-bottom: 4px;
            display: block;
        }

        .news-list-item .news-title:hover {
            color: var(--primary-bright);
        }

        .news-list-item .news-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }

        .news-sidebar-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--card-shadow);
        }

        .news-sidebar-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(0, 208, 255, 0.15);
        }

        /* ========== FAQ ========== */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
            background: #FFFFFF;
        }

        .accordion-custom .accordion-item:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .accordion-custom .accordion-button {
            background: #FFFFFF;
            color: var(--ink);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: 14px !important;
            transition: all var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(0, 208, 255, 0.04);
            color: var(--primary-bright);
            box-shadow: none;
            border-bottom: 1px solid rgba(0, 208, 255, 0.12);
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: var(--focus-ring);
            border-color: var(--neon);
        }

        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--neon);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--primary-bright);
        }

        .accordion-custom .accordion-body {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            padding: 18px 22px 20px;
            background: #FFFFFF;
        }

        /* ========== 表单 ========== */
        .form-control-custom {
            background: #FFFFFF;
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 14px;
            color: var(--ink);
            transition: all var(--transition-fast);
            width: 100%;
            font-family: var(--font-stack);
        }

        .form-control-custom:focus {
            border-color: var(--primary-bright);
            box-shadow: 0 0 0 3px rgba(43, 78, 255, 0.1), 0 0 10px rgba(43, 78, 255, 0.08);
            outline: none;
        }

        .form-control-custom::placeholder {
            color: var(--text-light);
        }

        textarea.form-control-custom {
            min-height: 120px;
            resize: vertical;
        }

        select.form-control-custom {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748B' d='M6 8.5L1.5 4h9z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }

        /* ========== 合作伙伴标签 ========== */
        .partner-tag {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 16px 18px;
            transition: all var(--transition-fast);
            text-align: center;
            height: 100%;
        }

        .partner-tag:hover {
            border-color: rgba(0, 208, 255, 0.3);
            box-shadow: 0 0 16px rgba(0, 208, 255, 0.1);
            transform: translateY(-2px);
        }

        .partner-tag .pt-icon {
            font-size: 1.6rem;
            color: var(--primary-bright);
            margin-bottom: 8px;
        }

        .partner-tag .pt-name {
            font-weight: 700;
            font-size: 14px;
            color: var(--ink);
            margin-bottom: 4px;
        }

        .partner-tag .pt-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }

        /* ========== 平台保障 ========== */
        .guarantee-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 28px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
        }

        .guarantee-item:hover {
            border-color: rgba(0, 208, 255, 0.3);
            box-shadow: 0 0 14px rgba(0, 208, 255, 0.1);
        }

        .guarantee-item i {
            color: var(--neon);
            font-size: 15px;
        }

        /* ========== 对比卡片 ========== */
        .compare-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            height: 100%;
        }

        .compare-card.compare-highlight {
            border: 2px solid rgba(0, 208, 255, 0.4);
            box-shadow: 0 0 24px rgba(0, 208, 255, 0.12);
            position: relative;
        }

        .compare-card .compare-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-bright);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }

        .compare-card .compare-highlight-label {
            position: absolute;
            top: -12px;
            left: 24px;
            background: var(--neon);
            color: #0A0E1A;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 14px;
            letter-spacing: 0.03em;
        }

        .compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-card ul li {
            padding: 9px 0 9px 28px;
            position: relative;
            font-size: 14px;
            color: var(--text-main);
            border-bottom: 1px solid var(--border);
        }

        .compare-card ul li:last-child {
            border-bottom: none;
        }

        .compare-card ul li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 10px;
            color: var(--primary-bright);
            font-size: 13px;
        }

        .compare-card ul li.not-included::before {
            content: '\f00d';
            color: #DC2626;
        }

        .compare-card ul li.not-included {
            color: var(--text-muted);
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--nav-bg);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 60px;
            padding-bottom: 24px;
            border-top: 2px solid;
            border-image: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple), var(--neon)) 1;
            border-top: 2px solid rgba(0, 208, 255, 0.25);
        }

        .footer-custom .footer-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: block;
            margin-bottom: 14px;
        }

        .footer-custom .footer-brand span {
            color: var(--neon);
        }

        .footer-custom .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-custom h5 {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-custom .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 5px 0;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }

        .footer-custom .footer-link:hover {
            color: var(--neon);
            padding-left: 6px;
        }

        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .footer-custom .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-custom .footer-bottom a:hover {
            color: var(--neon);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-custom {
            font-size: 13px;
            color: var(--text-muted);
            padding: 14px 0;
            margin-bottom: 8px;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary-bright);
        }

        .breadcrumb-custom .current {
            color: var(--primary-bright);
            font-weight: 600;
        }

        .breadcrumb-custom .separator {
            margin: 0 8px;
            color: var(--text-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 992px) {
            .hero-section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .case-row,
            .case-row.reverse {
                flex-direction: column;
                gap: 16px;
            }
            .case-row .case-image,
            .case-row .case-content {
                flex: 1 1 100%;
                min-width: auto;
            }
        }

        @media (max-width: 768px) {
            .hero-stats {
                gap: 16px;
            }
            .hero-stat-item .stat-number {
                font-size: 24px;
            }
            .hero-demo-panel .demo-body img {
                height: 180px;
            }
            .data-strip {
                padding: 20px 0;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 576px) {
            .navbar-custom {
                height: 56px;
            }
            .navbar-custom .navbar-brand {
                font-size: 1.05rem;
            }
            .btn-custom-primary,
            .btn-custom-neon,
            .btn-custom-ghost,
            .btn-custom-light {
                padding: 10px 20px;
                font-size: 13px;
            }
            .hero-section {
                padding-top: 28px;
                padding-bottom: 28px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 10px;
            }
            section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 6px;
            }
            .news-list-item .news-date {
                width: auto;
            }
        }

/* roulang page: category2 */
:root {
            --bg-page: #F5F7FC;
            --bg-section: #FFFFFF;
            --bg-soft: #F0F4FA;
            --bg-soft-2: #E8EEF7;
            --primary: #1F3A93;
            --primary-bright: #2B4EFF;
            --primary-dark: #162A6B;
            --neon: #00D0FF;
            --neon-purple: #7A5CFF;
            --ink: #0F172A;
            --text-main: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: rgba(15, 40, 100, 0.08);
            --border-strong: rgba(15, 40, 100, 0.14);
            --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
            --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-img: 14px;
            --nav-bg: #0A0E1A;
            --nav-bg-light: #0D1226;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 88px;
            --section-pad-mobile: 48px;
            --transition-fast: 0.22s ease;
            --transition-med: 0.32s ease;
            --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: var(--radius-btn);
        }
        .text-muted-custom {
            color: var(--text-muted);
        }
        .text-small {
            font-size: 14px;
            color: var(--text-muted);
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.15);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .bg-white-section {
            background: var(--bg-section);
        }
        .bg-soft-section {
            background: var(--bg-soft);
        }
        .bg-soft-2-section {
            background: var(--bg-soft-2);
        }

        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--nav-bg);
            padding: 0;
            height: 68px;
            border-bottom: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }
        .navbar-custom .navbar-brand span {
            color: var(--neon);
        }
        .navbar-custom .navbar-brand i {
            color: var(--neon);
            font-size: 1.1rem;
        }
        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-custom .nav-link.active {
            color: var(--neon);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
            background: rgba(0, 208, 255, 0.08);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--neon);
            margin: 4px auto 0;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
        }
        .navbar-custom .btn-nav-cta {
            background: var(--neon);
            color: #0A0E1A;
            font-weight: 700;
            font-size: 14px;
            padding: 8px 18px;
            border-radius: 10px;
            border: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: 0 0 14px rgba(0, 208, 255, 0.35);
        }
        .navbar-custom .btn-nav-cta:hover {
            background: #4ddcff;
            color: #0A0E1A;
            box-shadow: 0 0 22px rgba(0, 208, 255, 0.55);
            transform: translateY(-1px);
        }
        .navbar-toggler {
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler i {
            color: #fff;
            font-size: 1.2rem;
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 0;
            list-style: none;
            margin: 0;
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-custom li + li::before {
            content: '/';
            color: var(--text-light);
            font-size: 13px;
            margin-right: 2px;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary-bright);
        }
        .breadcrumb-custom .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== Hero ========== */
        .hero-category {
            background: linear-gradient(135deg, #F5F7FC 0%, #E8EEF7 55%, #E2EBF8 100%);
            padding: 52px 0 60px;
            position: relative;
            border-bottom: 1px solid var(--border);
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple));
            opacity: 0.35;
        }
        .hero-category .h1-main {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.3;
            margin: 16px 0 12px;
        }
        .hero-category .h1-main .highlight {
            color: var(--primary-bright);
            border-bottom: 3px solid rgba(0, 208, 255, 0.5);
        }
        .hero-category .lead-main {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 760px;
            line-height: 1.7;
        }
        .hero-badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 18px 0;
        }
        .hero-badge-list .badge-item {
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 12px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 2px 8px rgba(10, 20, 50, 0.04);
        }
        .hero-badge-list .badge-item i {
            color: var(--primary-bright);
            font-size: 12px;
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            border: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background: var(--primary-bright);
            color: #fff;
            box-shadow: 0 8px 22px rgba(43, 78, 255, 0.25);
            transform: translateY(-1px);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover {
            background: rgba(31, 58, 147, 0.06);
            color: var(--primary-bright);
            border-color: var(--primary-bright);
            box-shadow: 0 4px 14px rgba(31, 58, 147, 0.1);
        }
        .btn-neon-custom {
            background: var(--neon);
            color: #0A0E1A;
            font-weight: 700;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            border: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 0 16px rgba(0, 208, 255, 0.3);
        }
        .btn-neon-custom:hover {
            background: #4ddcff;
            color: #0A0E1A;
            box-shadow: 0 0 26px rgba(0, 208, 255, 0.5);
            transform: translateY(-1px);
        }

        /* ========== 功能卡片 ========== */
        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: box-shadow var(--transition-med), transform var(--transition-med), border-color var(--transition-med);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .feature-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: var(--border-strong);
        }
        .feature-card .card-image {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
            background: var(--bg-soft);
        }
        .feature-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(43, 78, 255, 0.08);
            color: var(--primary-bright);
            font-size: 18px;
            margin-bottom: 12px;
            border: 1px solid rgba(43, 78, 255, 0.15);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 14px;
            flex: 1;
        }
        .feature-card .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: auto;
        }
        .feature-card .card-meta .tag {
            font-size: 12px;
            background: var(--bg-soft);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 14px;
            border: 1px solid var(--border);
            font-weight: 500;
        }

        /* ========== 数据条 ========== */
        .stats-bar {
            background: var(--ink);
            padding: 48px 0;
            border-top: 2px solid rgba(0, 208, 255, 0.3);
            border-bottom: 2px solid rgba(0, 208, 255, 0.3);
        }
        .stats-bar .stat-item {
            text-align: center;
            padding: 10px 16px;
        }
        .stats-bar .stat-number {
            font-size: clamp(32px, 4vw, 46px);
            font-weight: 800;
            color: var(--neon);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
            line-height: 1.2;
            text-shadow: 0 0 18px rgba(0, 208, 255, 0.35);
        }
        .stats-bar .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
            letter-spacing: 0.04em;
        }

        /* ========== 图文板块 ========== */
        .split-panel {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .split-panel .split-image {
            flex: 0 0 44%;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
        }
        .split-panel .split-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .split-panel .split-content {
            flex: 1;
        }
        .split-panel h2 {
            font-size: clamp(22px, 2.5vw, 30px);
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .split-panel .feature-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 18px;
        }
        .check-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-main);
            border-bottom: 1px solid var(--border);
        }
        .check-list li:last-child {
            border-bottom: none;
        }
        .check-list li i {
            color: var(--neon);
            margin-top: 4px;
            font-size: 13px;
            background: rgba(0, 208, 255, 0.1);
            padding: 4px;
            border-radius: 50%;
        }

        /* ========== 特性表格 ========== */
        .spec-table-wrapper {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            padding: 24px;
            overflow-x: auto;
        }
        .spec-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 680px;
        }
        .spec-table th {
            background: var(--bg-soft);
            color: var(--primary);
            font-weight: 600;
            text-align: left;
            padding: 12px 16px;
            border-bottom: 2px solid var(--border-strong);
            font-size: 13px;
            letter-spacing: 0.02em;
        }
        .spec-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            color: var(--text-main);
        }
        .spec-table tr:last-child td {
            border-bottom: none;
        }
        .spec-table .highlight-row {
            background: rgba(43, 78, 255, 0.04);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(120deg, var(--ink) 0%, var(--primary-dark) 100%);
            padding: 56px 0;
            border-top: 2px solid rgba(0, 208, 255, 0.3);
            border-bottom: 2px solid rgba(0, 208, 255, 0.3);
        }
        .cta-section h2 {
            color: #fff;
            font-size: clamp(24px, 2.6vw, 32px);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            margin-bottom: 22px;
            max-width: 620px;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--nav-bg);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 0;
            border-top: 2px solid rgba(0, 208, 255, 0.25);
        }
        .footer-custom .footer-brand {
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-custom .footer-brand span {
            color: var(--neon);
        }
        .footer-custom .footer-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-custom h5 {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-custom .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            padding: 4px 0;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }
        .footer-custom .footer-link:hover {
            color: var(--neon);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 36px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--neon);
        }

        /* ========== FAQ ========== */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: 12px !important;
            background: #fff;
            box-shadow: var(--card-shadow);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-fast);
        }
        .accordion-custom .accordion-item:hover {
            box-shadow: var(--card-shadow-hover);
        }
        .accordion-custom .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            padding: 16px 20px;
            background: #fff;
            border: none;
            box-shadow: none;
            transition: color var(--transition-fast), background var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.04);
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            transition: transform var(--transition-fast), color var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--neon);
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
        }
        .accordion-custom .accordion-body {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            padding: 0 20px 16px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
            .navbar-custom .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .navbar-custom .btn-nav-cta {
                padding: 7px 14px;
                font-size: 13px;
            }
        }
        @media (max-width: 992px) {
            .navbar-custom {
                height: auto;
                min-height: 64px;
            }
            .navbar-custom .navbar-collapse {
                background: var(--nav-bg-light);
                border-radius: 0 0 14px 14px;
                padding: 14px 16px;
                box-shadow: 0 8px 24px rgba(10, 20, 50, 0.3);
                border: 1px solid rgba(255, 255, 255, 0.08);
                max-height: 70vh;
                overflow-y: auto;
            }
            .navbar-custom .navbar-nav {
                gap: 4px !important;
            }
            .navbar-custom .nav-link {
                padding: 8px 14px;
                font-size: 14px;
                display: block;
                width: 100%;
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
            .navbar-custom .btn-nav-cta {
                margin-top: 8px;
                display: block;
                text-align: center;
            }
            .split-panel {
                flex-direction: column;
                gap: 24px;
            }
            .split-panel .split-image {
                flex: none;
                width: 100%;
            }
            section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
            .stats-bar {
                padding: 32px 0;
            }
        }
        @media (max-width: 768px) {
            .hero-category {
                padding: 32px 0 40px;
            }
            .hero-category .h1-main {
                font-size: 26px;
            }
            .hero-category .lead-main {
                font-size: 14px;
            }
            .hero-badge-list {
                gap: 6px;
            }
            .hero-badge-list .badge-item {
                font-size: 11px;
                padding: 4px 10px;
            }
            .feature-card .card-body {
                padding: 16px 18px 18px;
            }
            .feature-card h3 {
                font-size: 16px;
            }
            .feature-card p {
                font-size: 13px;
            }
            section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .stats-bar .stat-number {
                font-size: 28px;
            }
            .stats-bar .stat-label {
                font-size: 11px;
            }
            .cta-section {
                padding: 36px 0;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .cta-section p {
                font-size: 13px;
            }
            .footer-custom {
                padding-top: 32px;
            }
            .footer-custom .footer-desc {
                font-size: 12px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .accordion-custom .accordion-button {
                font-size: 14px;
                padding: 14px 16px;
            }
            .accordion-custom .accordion-body {
                font-size: 13px;
                padding: 0 16px 14px;
            }
            .spec-table-wrapper {
                padding: 14px;
                border-radius: 12px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding-left: 14px;
                padding-right: 14px;
            }
            .navbar-custom {
                min-height: 56px;
            }
            .navbar-custom .navbar-brand {
                font-size: 1.05rem;
            }
            .hero-category .h1-main {
                font-size: 22px;
            }
            .hero-category .lead-main {
                font-size: 13px;
                line-height: 1.65;
            }
            .btn-primary-custom,
            .btn-outline-custom,
            .btn-neon-custom {
                font-size: 13px;
                padding: 8px 16px;
                border-radius: 10px;
            }
            .feature-card .card-image {
                aspect-ratio: 16/9;
            }
            .stats-bar .stat-number {
                font-size: 22px;
            }
            .stats-bar {
                padding: 24px 0;
            }
            .split-panel h2 {
                font-size: 20px;
            }
            .split-panel .feature-desc {
                font-size: 13px;
            }
            .check-list li {
                font-size: 13px;
                padding: 6px 0;
            }
            .cta-section h2 {
                font-size: 20px;
            }
            .footer-custom h5 {
                font-size: 13px;
            }
            .footer-bottom {
                font-size: 11px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-page: #F5F7FC;
            --bg-section: #FFFFFF;
            --bg-soft: #F0F4FA;
            --bg-soft-2: #E8EEF7;
            --primary: #1F3A93;
            --primary-bright: #2B4EFF;
            --primary-dark: #162A6B;
            --neon: #00D0FF;
            --neon-purple: #7A5CFF;
            --ink: #0F172A;
            --text-main: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: rgba(15, 40, 100, 0.08);
            --border-strong: rgba(15, 40, 100, 0.14);
            --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
            --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-img: 14px;
            --nav-bg: #0A0E1A;
            --nav-bg-light: #0D1226;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 88px;
            --section-pad-mobile: 48px;
            --transition-fast: 0.22s ease;
            --transition-med: 0.32s ease;
            --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-bright);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: var(--radius-btn);
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.15);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .bg-white-section {
            background: var(--bg-section);
        }

        .bg-soft-section {
            background: var(--bg-soft);
        }

        .bg-soft-2-section {
            background: var(--bg-soft-2);
        }

        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--nav-bg);
            padding: 0;
            height: 68px;
            border-bottom: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
        }

        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }

        .navbar-custom .navbar-brand span {
            color: var(--neon);
        }

        .navbar-custom .navbar-brand i {
            color: var(--neon);
            font-size: 1.1rem;
        }

        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .navbar-custom .nav-link:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar-custom .nav-link.active {
            color: var(--neon);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
            background: rgba(0, 208, 255, 0.08);
        }

        .navbar-custom .nav-link.active::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--neon);
            margin: 4px auto 0;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
        }

        .navbar-custom .btn-nav-cta {
            background: var(--neon);
            color: #0A0E1A;
            font-weight: 700;
            font-size: 14px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
        }

        .navbar-custom .btn-nav-cta:hover {
            background: #33D9FF;
            color: #0A0E1A;
            box-shadow: 0 0 16px rgba(0, 208, 255, 0.5);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: var(--focus-ring);
        }

        .navbar-toggler i {
            color: #FFFFFF;
            font-size: 1.1rem;
        }

        @media (max-width: 991.98px) {
            .navbar-custom {
                height: auto;
                min-height: 64px;
            }
            .navbar-collapse {
                background: var(--nav-bg-light);
                padding: 16px 20px 20px;
                border-radius: 0 0 16px 16px;
                border: 1px solid rgba(255, 255, 255, 0.08);
                border-top: none;
                margin-top: 8px;
            }
            .navbar-nav {
                gap: 6px;
            }
            .navbar-custom .nav-link {
                padding: 10px 14px;
            }
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-custom {
            background: transparent;
            padding: 20px 0 0;
            margin: 0;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary-bright);
        }

        .breadcrumb-custom .separator {
            color: var(--text-light);
            font-size: 11px;
        }

        .breadcrumb-custom .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== 分类英雄区 ========== */
        .category-hero {
            background: linear-gradient(135deg, #FFFFFF 0%, #F0F4FA 55%, #E8EEF7 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple));
            opacity: 0.6;
        }

        .category-hero h1 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .category-hero h1 .highlight {
            color: var(--primary-bright);
            position: relative;
        }

        .category-hero .lead {
            font-size: 17px;
            color: var(--text-main);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .category-hero .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-primary-custom {
            background: var(--primary-bright);
            color: #FFFFFF;
            font-weight: 650;
            padding: 11px 26px;
            border-radius: var(--radius-btn);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            font-size: 15px;
        }

        .btn-primary-custom:hover {
            background: #1E3FD8;
            color: #FFFFFF;
            box-shadow: 0 6px 20px rgba(43, 78, 255, 0.3);
            transform: translateY(-2px);
        }

        .btn-ghost-custom {
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
            font-size: 15px;
        }

        .btn-ghost-custom:hover {
            background: rgba(31, 58, 147, 0.05);
            border-color: var(--primary-bright);
            color: var(--primary-bright);
        }

        .hero-stat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--border);
            padding: 5px 14px;
            border-radius: 20px;
        }

        .hero-stat-badge i {
            color: var(--neon);
        }

        /* ========== 特征列表核心板块 ========== */
        .feature-list-section {
            background: var(--bg-section);
        }

        .feature-list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 28px 28px;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            background: #FFFFFF;
            box-shadow: var(--card-shadow);
            transition: box-shadow var(--transition-med), transform var(--transition-med), border-color var(--transition-fast);
            margin-bottom: 18px;
        }

        .feature-list-item:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(0, 208, 255, 0.25);
        }

        .feature-list-item:nth-child(even) .feature-icon-box {
            background: rgba(122, 92, 255, 0.08);
            color: var(--neon-purple);
        }

        .feature-icon-box {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(43, 78, 255, 0.08);
            color: var(--primary-bright);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            border: 1px solid rgba(43, 78, 255, 0.12);
        }

        .feature-list-content h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .feature-list-content p {
            font-size: 15px;
            color: var(--text-main);
            margin-bottom: 0;
            line-height: 1.8;
        }

        .feature-list-content .feature-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.14);
            padding: 2px 10px;
            border-radius: 14px;
            margin-top: 10px;
        }

        /* ========== 环境要求数据卡片 ========== */
        .env-section {
            background: var(--bg-soft);
        }

        .env-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--card-shadow);
            text-align: center;
            height: 100%;
            transition: box-shadow var(--transition-med), transform var(--transition-med);
        }

        .env-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }

        .env-card .env-icon {
            font-size: 28px;
            color: var(--primary-bright);
            margin-bottom: 12px;
        }

        .env-card h3 {
            font-size: 17px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .env-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .env-card .env-value {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            margin-top: 8px;
        }

        /* ========== 安装流程步骤 ========== */
        .steps-section {
            background: var(--bg-section);
        }

        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border);
        }

        .step-item:last-child {
            border-bottom: none;
        }

        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-bright), var(--neon));
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            box-shadow: 0 0 16px rgba(0, 208, 255, 0.25);
        }

        .step-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 15px;
            color: var(--text-main);
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ========== CTA横条 ========== */
        .cta-strip {
            background: #0A0E1A;
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-strip::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple));
        }

        .cta-strip h2 {
            color: #FFFFFF;
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 750;
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-strip p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 15px;
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 22px;
        }

        .btn-neon-custom {
            background: var(--neon);
            color: #0A0E1A;
            font-weight: 700;
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
        }

        .btn-neon-custom:hover {
            background: #33D9FF;
            color: #0A0E1A;
            box-shadow: 0 0 20px rgba(0, 208, 255, 0.55);
            transform: translateY(-2px);
        }

        .btn-outline-white-custom {
            background: transparent;
            color: #FFFFFF;
            font-weight: 600;
            padding: 11px 28px;
            border-radius: var(--radius-btn);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .btn-outline-white-custom:hover {
            border-color: #FFFFFF;
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
        }

        /* ========== FAQ ========== */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            background: #FFFFFF;
        }

        .accordion-custom .accordion-button {
            background: #FFFFFF;
            font-weight: 650;
            font-size: 16px;
            color: var(--ink);
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: background var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(43, 78, 255, 0.03);
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: var(--focus-ring);
            border-color: transparent;
        }

        .accordion-custom .accordion-button::after {
            font-family: 'Font Awesome 6 Free';
            content: '\f078';
            font-weight: 900;
            background: none;
            font-size: 14px;
            color: var(--primary);
            transition: transform var(--transition-med);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--neon);
        }

        .accordion-custom .accordion-body {
            padding: 16px 22px 20px;
            font-size: 14.5px;
            color: var(--text-main);
            line-height: 1.8;
            border-top: 1px solid var(--border);
        }

        /* ========== 图片容器 ========== */
        .img-placeholder {
            background: var(--bg-soft-2);
            border: 1px solid var(--border);
            border-radius: var(--radius-img);
            overflow: hidden;
            position: relative;
            min-height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .img-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .img-placeholder .fallback-text {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 10px 14px;
            background: rgba(10, 14, 26, 0.6);
            color: rgba(255, 255, 255, 0.85);
            font-size: 12px;
            text-align: center;
            letter-spacing: 0.02em;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: #0A0E1A;
            color: rgba(255, 255, 255, 0.65);
            padding: 56px 0 0;
            position: relative;
            border-top: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF) 1;
        }

        .footer-brand {
            font-weight: 800;
            font-size: 1.3rem;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .footer-brand span {
            color: var(--neon);
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-custom h5 {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 650;
            margin-bottom: 16px;
        }

        .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 5px 0;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }

        .footer-link:hover {
            color: var(--neon);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 0;
            margin-top: 40px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--neon);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
            .feature-list-item {
                padding: 20px;
                gap: 16px;
            }
            .feature-icon-box {
                width: 46px;
                height: 46px;
                font-size: 18px;
                border-radius: 12px;
            }
            .cta-strip {
                padding: 40px 0;
            }
        }

        @media (max-width: 767.98px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .lead {
                font-size: 15px;
            }
            .feature-list-item {
                flex-direction: column;
                gap: 14px;
                padding: 18px;
            }
            .feature-list-content h3 {
                font-size: 17px;
            }
            .feature-list-content p {
                font-size: 14px;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px 0;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 17px;
            }
            .footer-custom {
                padding: 40px 0 0;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .env-card {
                padding: 20px 16px;
            }
            .env-card .env-value {
                font-size: 22px;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-primary-custom,
            .btn-ghost-custom,
            .btn-neon-custom,
            .btn-outline-white-custom {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 575.98px) {
            .category-hero h1 {
                font-size: 23px;
            }
            .category-hero .lead {
                font-size: 14px;
                line-height: 1.7;
            }
            .breadcrumb-custom {
                font-size: 12px;
            }
            .feature-list-content p {
                font-size: 13.5px;
            }
            .cta-strip h2 {
                font-size: 20px;
            }
            .cta-strip p {
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-page: #F5F7FC;
            --bg-section: #FFFFFF;
            --bg-soft: #F0F4FA;
            --bg-soft-2: #E8EEF7;
            --primary: #1F3A93;
            --primary-bright: #2B4EFF;
            --primary-dark: #162A6B;
            --neon: #00D0FF;
            --neon-purple: #7A5CFF;
            --ink: #0F172A;
            --text-main: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: rgba(15, 40, 100, 0.08);
            --border-strong: rgba(15, 40, 100, 0.14);
            --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
            --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-img: 14px;
            --nav-bg: #0A0E1A;
            --nav-bg-light: #0D1226;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 88px;
            --section-pad-mobile: 48px;
            --transition-fast: 0.22s ease;
            --transition-med: 0.32s ease;
            --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: var(--radius-btn);
        }
        .text-muted-custom {
            color: var(--text-muted);
        }
        .text-small {
            font-size: 14px;
            color: var(--text-muted);
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.15);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .bg-white-section {
            background: var(--bg-section);
        }
        .bg-soft-section {
            background: var(--bg-soft);
        }
        .bg-soft-2-section {
            background: var(--bg-soft-2);
        }
        .section-title-wrap {
            margin-bottom: 40px;
        }
        .section-title-wrap h2 {
            font-size: clamp(22px, 3vw, 32px);
            font-weight: 750;
            color: var(--ink);
            margin: 0 0 12px;
            line-height: 1.3;
            position: relative;
            padding-left: 18px;
        }
        .section-title-wrap h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary-bright), var(--neon));
        }
        .section-title-wrap p {
            color: var(--text-muted);
            font-size: 15px;
            margin: 0;
            max-width: 680px;
            line-height: 1.7;
            padding-left: 18px;
        }
        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--nav-bg);
            padding: 0;
            height: 68px;
            border-bottom: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }
        .navbar-custom .navbar-brand span {
            color: var(--neon);
        }
        .navbar-custom .navbar-brand i {
            color: var(--neon);
            font-size: 1.1rem;
        }
        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-custom .nav-link.active {
            color: var(--neon);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
            background: rgba(0, 208, 255, 0.08);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--neon);
            margin: 4px auto 0;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
        }
        .navbar-custom .btn-nav-cta {
            background: var(--neon);
            color: #0A0E1A;
            font-weight: 700;
            font-size: 14px;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 0 16px rgba(0, 208, 255, 0.35);
        }
        .navbar-custom .btn-nav-cta:hover {
            background: #33ddff;
            color: #0A0E1A;
            box-shadow: 0 0 24px rgba(0, 208, 255, 0.55);
            transform: translateY(-1px);
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-custom .navbar-toggler i {
            color: #fff;
            font-size: 18px;
        }
        @media (max-width: 991px) {
            .navbar-custom {
                height: auto;
                min-height: 64px;
                padding: 8px 0;
            }
            .navbar-custom .navbar-collapse {
                background: var(--nav-bg-light);
                border-radius: 12px;
                padding: 12px 16px;
                margin-top: 8px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            }
            .navbar-custom .nav-link {
                padding: 10px 12px;
                border-radius: 8px;
                width: 100%;
            }
            .navbar-custom .btn-nav-cta {
                width: 100%;
                margin-top: 6px;
                text-align: center;
            }
        }
        /* ========== 面包屑 ========== */
        .breadcrumb-compare {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb-compare a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb-compare a:hover {
            color: var(--primary-bright);
        }
        .breadcrumb-compare .separator {
            color: var(--text-light);
            font-size: 12px;
        }
        .breadcrumb-compare .current {
            color: var(--primary);
            font-weight: 600;
        }
        /* ========== Hero 对比页 ========== */
        .hero-compare {
            background: linear-gradient(180deg, #FFFFFF 0%, #F5F7FC 100%);
            padding: 48px 0 56px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .hero-compare::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--neon), var(--neon-purple));
            border-radius: 0 0 0 4px;
        }
        .hero-compare h1 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.25;
            margin: 0 0 16px;
            letter-spacing: -0.01em;
        }
        .hero-compare h1 span {
            color: var(--primary-bright);
            border-bottom: 3px solid var(--neon);
            padding-bottom: 2px;
        }
        .hero-compare .hero-lead {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .hero-compare .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn {
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            transition: all var(--transition-fast);
            border: none;
        }
        .btn-primary-custom {
            background: var(--primary-bright);
            color: #fff;
            box-shadow: 0 4px 14px rgba(43, 78, 255, 0.3);
        }
        .btn-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(43, 78, 255, 0.4);
            transform: translateY(-2px);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary-bright);
        }
        .btn-ghost-custom:hover {
            background: rgba(43, 78, 255, 0.06);
            border-color: var(--primary);
            color: var(--primary-dark);
        }
        .btn-neon-custom {
            background: var(--neon);
            color: #0A0E1A;
            font-weight: 700;
            box-shadow: 0 0 18px rgba(0, 208, 255, 0.35);
        }
        .btn-neon-custom:hover {
            background: #33ddff;
            box-shadow: 0 0 26px rgba(0, 208, 255, 0.5);
            transform: translateY(-2px);
            color: #0A0E1A;
        }
        .hero-compare .hero-visual {
            background: var(--bg-soft);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            position: relative;
            overflow: hidden;
        }
        .hero-compare .hero-visual .vs-mini {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .hero-compare .hero-visual .vs-mini .v-item {
            background: #fff;
            border-radius: 12px;
            padding: 14px 18px;
            text-align: center;
            min-width: 100px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border);
        }
        .hero-compare .hero-visual .vs-mini .v-item .v-name {
            font-weight: 700;
            color: var(--ink);
            font-size: 14px;
            margin-bottom: 4px;
        }
        .hero-compare .hero-visual .vs-mini .v-item .v-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-bright);
            font-variant-numeric: tabular-nums;
        }
        .hero-compare .hero-visual .vs-mini .vs-badge-mini {
            font-size: 14px;
            font-weight: 800;
            color: var(--neon-purple);
            background: rgba(122, 92, 255, 0.1);
            border: 1px solid rgba(122, 92, 255, 0.25);
            border-radius: 50%;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 16px rgba(122, 92, 255, 0.2);
        }
        /* ========== 版本概览卡 ========== */
        .version-overview {
            background: var(--bg-section);
        }
        .version-overview .overview-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .version-overview .overview-card {
            background: var(--bg-page);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 26px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }
        .version-overview .overview-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--border-strong);
        }
        .version-overview .overview-card .ov-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 12px;
        }
        .version-overview .overview-card .ov-tag.standard {
            background: rgba(31, 58, 147, 0.08);
            color: var(--primary);
            border: 1px solid rgba(31, 58, 147, 0.2);
        }
        .version-overview .overview-card .ov-tag.pro {
            background: rgba(0, 208, 255, 0.08);
            color: var(--primary-dark);
            border: 1px solid rgba(0, 208, 255, 0.25);
        }
        .version-overview .overview-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 8px;
            line-height: 1.3;
        }
        .version-overview .overview-card .ov-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .version-overview .overview-card .ov-price {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-bright);
            font-variant-numeric: tabular-nums;
            margin-bottom: 4px;
        }
        .version-overview .overview-card .ov-price-suffix {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .version-overview .vs-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .version-overview .vs-center .vs-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--ink);
            color: var(--neon);
            font-weight: 800;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 24px rgba(0, 208, 255, 0.35);
            border: 2px solid rgba(0, 208, 255, 0.5);
        }
        /* ========== 功能详细对比 ========== */
        .feature-compare {
            background: var(--bg-soft-2-section);
        }
        .feature-compare .compare-table-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .feature-compare .compare-col {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border);
        }
        .feature-compare .compare-col.highlight-col {
            border: 1.5px solid var(--neon);
            box-shadow: 0 0 24px rgba(0, 208, 255, 0.12), var(--card-shadow);
            position: relative;
        }
        .feature-compare .compare-col.highlight-col::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--neon);
            color: #0A0E1A;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 12px;
            box-shadow: 0 2px 10px rgba(0, 208, 255, 0.4);
        }
        .feature-compare .compare-col h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feature-compare .compare-col h3 i {
            color: var(--primary-bright);
        }
        .feature-compare .compare-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .feature-compare .compare-col ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-main);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }
        .feature-compare .compare-col ul li:last-child {
            border-bottom: none;
        }
        .feature-compare .compare-col ul li i {
            margin-top: 3px;
            font-size: 14px;
        }
        .feature-compare .compare-col ul li i.fa-check-circle {
            color: #10b981;
        }
        .feature-compare .compare-col ul li i.fa-minus-circle {
            color: var(--text-light);
        }
        .feature-compare .compare-col ul li i.fa-star {
            color: var(--neon);
        }
        .feature-compare .compare-col ul li.diff-highlight {
            background: rgba(0, 208, 255, 0.05);
            border-radius: 8px;
            padding-left: 10px;
            padding-right: 10px;
            border-bottom-color: transparent;
        }
        .feature-compare .compare-col ul li.diff-highlight i {
            color: var(--neon);
        }
        /* ========== 参数对比数据 ========== */
        .param-compare {
            background: var(--bg-section);
        }
        .param-compare .param-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .param-compare .param-item {
            background: var(--bg-page);
            border-radius: 14px;
            padding: 22px 18px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
        }
        .param-compare .param-item:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }
        .param-compare .param-item .p-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-bright);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .param-compare .param-item .p-num small {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-muted);
        }
        .param-compare .param-item .p-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        /* ========== 适用场景 ========== */
        .scene-compare {
            background: var(--bg-soft);
        }
        .scene-compare .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .scene-compare .scene-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
        }
        .scene-compare .scene-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }
        .scene-compare .scene-card .scene-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
        }
        .scene-compare .scene-card .scene-icon.standard-icon {
            background: rgba(31, 58, 147, 0.08);
            color: var(--primary);
            border: 1px solid rgba(31, 58, 147, 0.15);
        }
        .scene-compare .scene-card .scene-icon.pro-icon {
            background: rgba(0, 208, 255, 0.08);
            color: var(--neon);
            border: 1px solid rgba(0, 208, 255, 0.2);
        }
        .scene-compare .scene-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 10px;
        }
        .scene-compare .scene-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 12px;
        }
        .scene-compare .scene-card .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .scene-compare .scene-card .scene-tags span {
            font-size: 12px;
            font-weight: 500;
            color: var(--text-muted);
            background: var(--bg-soft);
            border: 1px solid var(--border);
            padding: 3px 10px;
            border-radius: 12px;
        }
        /* ========== FAQ ========== */
        .faq-compare {
            background: var(--bg-section);
        }
        .faq-compare .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: 14px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            background: #fff;
        }
        .faq-compare .accordion-custom .accordion-button {
            font-weight: 600;
            font-size: 15px;
            color: var(--ink);
            background: #fff;
            padding: 18px 22px;
            border-radius: 14px !important;
        }
        .faq-compare .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.03);
            box-shadow: none;
        }
        .faq-compare .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--neon);
        }
        .faq-compare .accordion-custom .accordion-button::after {
            background-size: 16px;
            width: 16px;
            height: 16px;
            filter: invert(30%) sepia(80%) saturate(1000%) hue-rotate(200deg);
        }
        .faq-compare .accordion-custom .accordion-body {
            color: var(--text-main);
            font-size: 14px;
            line-height: 1.75;
            padding: 0 22px 18px;
        }
        /* ========== CTA ========== */
        .cta-compare {
            background: var(--bg-soft-2-section);
        }
        .cta-compare .cta-inner {
            background: var(--nav-bg);
            border-radius: var(--radius-card);
            padding: 44px 36px;
            box-shadow: 0 12px 36px rgba(10, 20, 50, 0.15);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0, 208, 255, 0.15);
        }
        .cta-compare .cta-inner::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--neon), var(--neon-purple));
        }
        .cta-compare .cta-inner h2 {
            font-size: clamp(20px, 2.5vw, 28px);
            font-weight: 750;
            color: #fff;
            margin: 0 0 10px;
            line-height: 1.35;
        }
        .cta-compare .cta-inner p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 15px;
            margin: 0 0 20px;
            max-width: 520px;
            line-height: 1.7;
        }
        .cta-compare .cta-inner .btn-neon-custom {
            box-shadow: 0 0 20px rgba(0, 208, 255, 0.45);
        }
        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--nav-bg);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            margin-top: 0;
            border-top: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF) 1;
        }
        .footer-custom .footer-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .footer-custom .footer-brand span {
            color: var(--neon);
        }
        .footer-custom .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-custom h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-custom .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-custom .footer-link:hover {
            color: var(--neon);
        }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0;
            margin-top: 40px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            align-items: center;
            justify-content: space-between;
        }
        .footer-custom .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition-fast);
        }
        .footer-custom .footer-bottom a:hover {
            color: var(--neon);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
            .param-compare .param-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 992px) {
            :root {
                --section-pad: 64px;
                --section-pad-mobile: 40px;
            }
            .hero-compare {
                padding: 36px 0 44px;
            }
            .hero-compare h1 {
                font-size: clamp(24px, 4vw, 34px);
            }
            .version-overview .overview-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .version-overview .vs-center {
                padding: 4px 0;
            }
            .version-overview .vs-center .vs-circle {
                width: 44px;
                height: 44px;
                font-size: 14px;
            }
            .feature-compare .compare-table-wrap {
                grid-template-columns: 1fr;
            }
            .feature-compare .compare-col.highlight-col::before {
                top: -10px;
            }
            .scene-compare .scene-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .param-compare .param-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .param-compare .param-item .p-num {
                font-size: 28px;
            }
            .hero-compare .hero-visual .vs-mini .v-item {
                min-width: 80px;
                padding: 10px 12px;
            }
            .hero-compare .hero-visual .vs-mini .v-item .v-num {
                font-size: 22px;
            }
            .hero-compare .hero-visual .vs-mini .vs-badge-mini {
                width: 38px;
                height: 38px;
                font-size: 12px;
            }
            .cta-compare .cta-inner {
                padding: 32px 22px;
            }
            .section-title-wrap h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 576px) {
            .container-custom {
                padding-left: 14px;
                padding-right: 14px;
            }
            :root {
                --section-pad: 40px;
                --section-pad-mobile: 32px;
            }
            .hero-compare h1 {
                font-size: 24px;
            }
            .hero-compare .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-compare .hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .param-compare .param-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .param-compare .param-item {
                padding: 16px 12px;
            }
            .param-compare .param-item .p-num {
                font-size: 24px;
            }
            .feature-compare .compare-col {
                padding: 20px 16px;
            }
            .feature-compare .compare-col ul li {
                font-size: 13px;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .breadcrumb-compare {
                font-size: 12px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-page: #F5F7FC;
            --bg-section: #FFFFFF;
            --bg-soft: #F0F4FA;
            --bg-soft-2: #E8EEF7;
            --primary: #1F3A93;
            --primary-bright: #2B4EFF;
            --primary-dark: #162A6B;
            --neon: #00D0FF;
            --neon-purple: #7A5CFF;
            --ink: #0F172A;
            --text-main: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: rgba(15, 40, 100, 0.08);
            --border-strong: rgba(15, 40, 100, 0.14);
            --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
            --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-img: 14px;
            --nav-bg: #0A0E1A;
            --nav-bg-light: #0D1226;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 88px;
            --section-pad-mobile: 48px;
            --transition-fast: 0.22s ease;
            --transition-med: 0.32s ease;
            --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: var(--radius-btn);
        }
        .text-muted-custom {
            color: var(--text-muted);
        }
        .text-small {
            font-size: 14px;
            color: var(--text-muted);
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.15);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .bg-white-section {
            background: var(--bg-section);
        }
        .bg-soft-section {
            background: var(--bg-soft);
        }
        .bg-soft-2-section {
            background: var(--bg-soft-2);
        }
        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.2rem);
            font-weight: 750;
            color: var(--ink);
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
            max-width: 720px;
        }
        .section-title-bar {
            display: inline-block;
            width: 36px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon));
            border-radius: 4px;
            margin-bottom: 18px;
        }
        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--nav-bg);
            padding: 0;
            height: 68px;
            border-bottom: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }
        .navbar-custom .navbar-brand span {
            color: var(--neon);
        }
        .navbar-custom .navbar-brand i {
            color: var(--neon);
            font-size: 1.1rem;
        }
        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-custom .nav-link.active {
            color: var(--neon);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
            background: rgba(0, 208, 255, 0.08);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--neon);
            margin: 4px auto 0;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
        }
        .navbar-custom .btn-nav-cta {
            background: var(--neon);
            color: var(--nav-bg);
            font-weight: 700;
            font-size: 14px;
            padding: 9px 20px;
            border-radius: 10px;
            border: none;
            box-shadow: 0 0 16px rgba(0, 208, 255, 0.35);
            transition: all var(--transition-fast);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-custom .btn-nav-cta:hover {
            background: #33DBFF;
            color: var(--nav-bg);
            box-shadow: 0 0 24px rgba(0, 208, 255, 0.55);
            transform: translateY(-1px);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
            font-size: 1.1rem;
            background: rgba(255, 255, 255, 0.04);
        }
        .navbar-toggler:focus {
            box-shadow: var(--focus-ring);
        }
        /* ========== 面包屑 ========== */
        .breadcrumb-custom {
            background: var(--bg-section);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb-custom .breadcrumb {
            margin: 0;
            font-size: 13px;
            background: transparent;
            padding: 0;
        }
        .breadcrumb-custom .breadcrumb-item a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom .breadcrumb-item a:hover {
            color: var(--primary-bright);
        }
        .breadcrumb-custom .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 600;
        }
        .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-light);
            content: "/";
            padding: 0 8px;
        }
        /* ========== Hero ========== */
        .hero-custom {
            background: linear-gradient(175deg, #FFFFFF 0%, #F5F7FC 70%, #F0F4FA 100%);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .hero-custom::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 208, 255, 0.08), transparent 70%);
            pointer-events: none;
        }
        .hero-custom h1 {
            font-size: clamp(1.9rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }
        .hero-custom h1 .highlight {
            color: var(--primary-bright);
            position: relative;
        }
        .hero-custom h1 .highlight::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 2px;
            width: 100%;
            height: 8px;
            background: rgba(0, 208, 255, 0.2);
            border-radius: 4px;
            z-index: -1;
        }
        .hero-custom .hero-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.85;
            max-width: 620px;
            margin-bottom: 28px;
        }
        .hero-custom .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }
        .hero-custom .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(31, 58, 147, 0.05);
            border: 1px solid rgba(31, 58, 147, 0.12);
            padding: 6px 14px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .hero-custom .hero-badge i {
            color: var(--neon);
            font-size: 12px;
        }
        .btn-primary-custom {
            background: var(--primary-bright);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            box-shadow: 0 4px 16px rgba(43, 78, 255, 0.25);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background: #3D5EFF;
            color: #FFFFFF;
            box-shadow: 0 6px 24px rgba(43, 78, 255, 0.38);
            transform: translateY(-2px);
        }
        .btn-primary-custom:focus-visible {
            box-shadow: var(--focus-ring);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 11px 26px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--primary);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover {
            background: rgba(31, 58, 147, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-neon-custom {
            background: var(--neon);
            color: var(--nav-bg);
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            box-shadow: 0 0 18px rgba(0, 208, 255, 0.4);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-neon-custom:hover {
            background: #33DBFF;
            color: var(--nav-bg);
            box-shadow: 0 0 28px rgba(0, 208, 255, 0.6);
            transform: translateY(-2px);
        }
        .hero-illustration {
            background: linear-gradient(135deg, var(--nav-bg-light), var(--primary-dark));
            border-radius: 20px;
            padding: 36px 28px;
            color: #FFFFFF;
            box-shadow: 0 12px 34px rgba(10, 20, 50, 0.16);
            position: relative;
            overflow: hidden;
        }
        .hero-illustration::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple));
        }
        .hero-illustration .illustration-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-illustration .illustration-title i {
            color: var(--neon);
        }
        .hero-illustration .step-mini-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .hero-illustration .step-mini-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-illustration .step-mini-list li:last-child {
            border-bottom: none;
        }
        .hero-illustration .step-mini-list li i {
            color: var(--neon);
            font-size: 13px;
            width: 20px;
            text-align: center;
        }
        /* ========== 步骤教程专属 ========== */
        .step-section {
            background: var(--bg-section);
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 48px;
            padding: 42px 0;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-item.step-reverse {
            flex-direction: row-reverse;
        }
        .step-number {
            flex-shrink: 0;
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--nav-bg-light);
            color: var(--neon);
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 28px rgba(0, 208, 255, 0.25);
            border: 2px solid rgba(0, 208, 255, 0.4);
            font-variant-numeric: tabular-nums;
            transition: all var(--transition-med);
        }
        .step-item:hover .step-number {
            box-shadow: 0 0 40px rgba(0, 208, 255, 0.45);
            border-color: var(--neon);
            transform: scale(1.04);
        }
        .step-content {
            flex: 1;
            min-width: 0;
        }
        .step-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
            line-height: 1.35;
        }
        .step-content p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 0;
        }
        .step-content .step-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }
        .step-content .step-tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(31, 58, 147, 0.06);
            border: 1px solid rgba(31, 58, 147, 0.12);
            padding: 4px 12px;
            border-radius: 16px;
        }
        .step-image {
            flex-shrink: 0;
            width: 280px;
            height: 190px;
            border-radius: var(--radius-img);
            overflow: hidden;
            background: var(--bg-soft-2);
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            position: relative;
        }
        .step-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-med);
        }
        .step-item:hover .step-image img {
            transform: scale(1.03);
        }
        .step-image .image-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(10, 14, 26, 0.75));
            color: #FFFFFF;
            font-size: 12px;
            padding: 18px 14px 10px;
            text-align: center;
            letter-spacing: 0.02em;
        }
        /* ========== 提示条 ========== */
        .tips-bar {
            background: var(--bg-soft-2);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 32px;
        }
        .tips-bar i {
            font-size: 1.6rem;
            color: var(--primary-bright);
            flex-shrink: 0;
        }
        .tips-bar p {
            margin: 0;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .tips-bar strong {
            color: var(--primary);
        }
        /* ========== 品牌介绍 ========== */
        .brand-intro {
            background: linear-gradient(135deg, var(--nav-bg-light) 0%, var(--primary-dark) 100%);
            color: #FFFFFF;
            border-radius: 20px;
            padding: 44px 40px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(10, 20, 50, 0.18);
        }
        .brand-intro::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(0, 208, 255, 0.2), transparent 70%);
            pointer-events: none;
        }
        .brand-intro h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand-intro h3 i {
            color: var(--neon);
        }
        .brand-intro p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 0;
            max-width: 780px;
        }
        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-soft);
        }
        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: 14px !important;
            margin-bottom: 12px;
            background: var(--bg-section);
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .accordion-custom .accordion-item:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--border-strong);
        }
        .accordion-custom .accordion-button {
            background: var(--bg-section);
            color: var(--ink);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: 14px !important;
            transition: all var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(31, 58, 147, 0.04);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: var(--focus-ring);
            border-color: transparent;
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--neon);
        }
        .accordion-custom .accordion-body {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.85;
            padding: 0 22px 20px;
            background: var(--bg-section);
        }
        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-section);
            padding: 64px 0;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--nav-bg-light) 0%, var(--primary-dark) 100%);
            border-radius: 20px;
            padding: 48px 40px;
            text-align: center;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
            box-shadow: 0 12px 34px rgba(10, 20, 50, 0.2);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple));
        }
        .cta-box h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            margin-bottom: 24px;
            line-height: 1.8;
        }
        .cta-box .btn {
            margin: 0 6px;
        }
        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--nav-bg);
            color: rgba(255, 255, 255, 0.65);
            padding: 56px 0 24px;
            font-size: 14px;
            border-top: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
        }
        .footer-custom .footer-brand {
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .footer-custom .footer-brand span {
            color: var(--neon);
        }
        .footer-custom .footer-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer-custom h5 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-custom .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-custom .footer-link:hover {
            color: var(--neon);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 36px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
            gap: 10px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: var(--neon);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .navbar-collapse {
                background: var(--nav-bg-light);
                border-radius: 12px;
                padding: 16px 18px;
                margin-top: 8px;
                border: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 8px 24px rgba(10, 20, 50, 0.25);
            }
            .navbar-custom .nav-link {
                padding: 10px 14px;
                font-size: 14px;
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
            .navbar-custom .btn-nav-cta {
                margin-top: 6px;
                justify-content: center;
            }
            .step-item,
            .step-item.step-reverse {
                flex-direction: column;
                gap: 20px;
                padding: 28px 0;
                align-items: flex-start;
            }
            .step-image {
                width: 100%;
                height: 200px;
            }
            .step-number {
                width: 56px;
                height: 56px;
                font-size: 1.4rem;
            }
            .brand-intro {
                padding: 32px 24px;
            }
            .cta-box {
                padding: 36px 24px;
            }
        }
        @media (max-width: 767px) {
            section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
            .hero-custom {
                padding: 40px 0 36px;
            }
            .hero-custom h1 {
                font-size: 1.7rem;
            }
            .hero-custom .hero-subtitle {
                font-size: 14px;
            }
            .hero-custom .hero-badges {
                gap: 8px;
            }
            .hero-custom .hero-badge {
                font-size: 12px;
                padding: 5px 10px;
            }
            .hero-illustration {
                padding: 24px 18px;
                margin-top: 20px;
            }
            .step-content h3 {
                font-size: 1.15rem;
            }
            .step-content p {
                font-size: 14px;
            }
            .tips-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 18px 16px;
                gap: 12px;
            }
            .tips-bar p {
                font-size: 13px;
            }
            .brand-intro p {
                font-size: 14px;
            }
            .cta-box h2 {
                font-size: 1.3rem;
            }
            .cta-box .btn {
                display: block;
                width: 100%;
                margin: 8px 0;
            }
            .footer-custom {
                padding: 40px 0 16px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
                font-size: 11px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding-left: 14px;
                padding-right: 14px;
            }
            .hero-custom h1 {
                font-size: 1.45rem;
            }
            .step-number {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
            .step-image {
                height: 160px;
            }
            .breadcrumb-custom .breadcrumb {
                font-size: 12px;
            }
            .accordion-custom .accordion-button {
                font-size: 14px;
                padding: 15px 16px;
            }
            .accordion-custom .accordion-body {
                font-size: 13px;
                padding: 0 16px 16px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-page: #F5F7FC;
            --bg-section: #FFFFFF;
            --bg-soft: #F0F4FA;
            --bg-soft-2: #E8EEF7;
            --primary: #1F3A93;
            --primary-bright: #2B4EFF;
            --primary-dark: #162A6B;
            --neon: #00D0FF;
            --neon-purple: #7A5CFF;
            --ink: #0F172A;
            --text-main: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: rgba(15, 40, 100, 0.08);
            --border-strong: rgba(15, 40, 100, 0.14);
            --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
            --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-img: 14px;
            --nav-bg: #0A0E1A;
            --nav-bg-light: #0D1226;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 88px;
            --section-pad-mobile: 48px;
            --transition-fast: 0.22s ease;
            --transition-med: 0.32s ease;
            --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: var(--radius-btn);
        }
        .text-muted-custom {
            color: var(--text-muted);
        }
        .text-small {
            font-size: 14px;
            color: var(--text-muted);
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.15);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .bg-white-section {
            background: var(--bg-section);
        }
        .bg-soft-section {
            background: var(--bg-soft);
        }
        .bg-soft-2-section {
            background: var(--bg-soft-2);
        }

        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--nav-bg);
            padding: 0;
            height: 68px;
            border-bottom: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }
        .navbar-custom .navbar-brand span {
            color: var(--neon);
        }
        .navbar-custom .navbar-brand i {
            color: var(--neon);
            font-size: 1.1rem;
        }
        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-custom .nav-link.active {
            color: var(--neon);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
            background: rgba(0, 208, 255, 0.08);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--neon);
            margin: 4px auto 0;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
        }
        .navbar-custom .btn-nav-cta {
            background: var(--neon);
            color: var(--nav-bg);
            font-weight: 700;
            font-size: 14px;
            padding: 9px 20px;
            border-radius: var(--radius-btn);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: 0 0 14px rgba(0, 208, 255, 0.35);
        }
        .navbar-custom .btn-nav-cta:hover {
            background: #33D9FF;
            color: var(--nav-bg);
            box-shadow: 0 0 22px rgba(0, 208, 255, 0.55);
            transform: translateY(-1px);
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-custom .navbar-toggler:focus {
            box-shadow: var(--focus-ring);
        }
        .navbar-custom .navbar-toggler i {
            color: #FFFFFF;
            font-size: 1.2rem;
        }
        .navbar-collapse {
            background: var(--nav-bg);
        }
        @media (max-width: 991px) {
            .navbar-custom {
                height: auto;
                min-height: 64px;
                padding: 8px 0;
            }
            .navbar-custom .navbar-collapse {
                background: var(--nav-bg);
                border-radius: 0 0 14px 14px;
                padding: 16px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 16px 40px rgba(10, 20, 50, 0.35);
                margin-top: 8px;
            }
            .navbar-custom .nav-link {
                padding: 10px 14px;
                font-size: 15px;
                border-radius: 8px;
            }
            .navbar-custom .nav-link.active::after {
                margin: 4px 0 0;
            }
            .navbar-custom .btn-nav-cta {
                margin-top: 8px;
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 14px 0;
            margin: 0;
            list-style: none;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary-bright);
        }
        .breadcrumb-custom .separator {
            color: var(--text-light);
            font-size: 11px;
        }
        .breadcrumb-custom .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== Hero ========== */
        .hero-config {
            background: var(--bg-section);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .hero-config::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple));
        }
        .hero-config::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(0, 208, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-config h1 {
            font-size: clamp(28px, 3.4vw, 42px);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .hero-config .hero-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .hero-config .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-config .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(31, 58, 147, 0.05);
            border: 1px solid rgba(31, 58, 147, 0.12);
            padding: 6px 14px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .hero-config .hero-badge i {
            color: var(--neon);
            font-size: 12px;
        }
        .hero-config .hero-visual {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border);
            background: var(--bg-soft);
            min-height: 220px;
        }
        .hero-config .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-config .hero-visual .visual-tag {
            position: absolute;
            bottom: 14px;
            left: 14px;
            background: rgba(10, 14, 26, 0.82);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-config .hero-visual .visual-tag i {
            color: var(--neon);
        }

        /* ========== 数据卡片 ========== */
        .data-card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-card {
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--card-shadow);
            transition: box-shadow var(--transition-med), transform var(--transition-med);
            position: relative;
            overflow: hidden;
        }
        .data-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon));
            opacity: 0.7;
        }
        .data-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }
        .data-card .data-number {
            font-size: clamp(32px, 3.5vw, 44px);
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .data-card .data-number .unit {
            font-size: 0.5em;
            font-weight: 600;
            color: var(--text-muted);
            margin-left: 2px;
        }
        .data-card .data-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .data-card .data-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .data-card .data-icon {
            font-size: 22px;
            color: var(--neon);
            margin-bottom: 12px;
            display: inline-block;
        }

        /* ========== 进度条参数 ========== */
        .param-section {
            background: var(--bg-section);
        }
        .param-card {
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--card-shadow);
            height: 100%;
            transition: box-shadow var(--transition-med), transform var(--transition-med);
        }
        .param-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }
        .param-card .param-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .param-card .param-title i {
            color: var(--primary-bright);
            font-size: 16px;
        }
        .param-item {
            margin-bottom: 18px;
        }
        .param-item:last-child {
            margin-bottom: 0;
        }
        .param-item .param-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 6px;
        }
        .param-item .param-name {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
        }
        .param-item .param-value {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
        }
        .param-item .param-value.high {
            color: var(--neon-purple);
        }
        .progress-custom {
            height: 8px;
            border-radius: 4px;
            background: var(--bg-soft-2);
            overflow: hidden;
            border: none;
        }
        .progress-custom .progress-bar-custom {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary-bright), var(--neon));
            transition: width 1s ease;
        }
        .progress-custom .progress-bar-custom.high {
            background: linear-gradient(90deg, var(--primary-bright), var(--neon-purple));
        }

        /* ========== 刻度列表 ========== */
        .scale-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .scale-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 16px 18px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .scale-item:hover {
            border-color: rgba(43, 78, 255, 0.25);
            box-shadow: var(--card-shadow);
        }
        .scale-item .scale-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--neon);
            flex-shrink: 0;
            margin-top: 6px;
            box-shadow: 0 0 8px rgba(0, 208, 255, 0.4);
        }
        .scale-item .scale-dot.high {
            background: var(--neon-purple);
            box-shadow: 0 0 8px rgba(122, 92, 255, 0.4);
        }
        .scale-item .scale-content {
            flex: 1;
        }
        .scale-item .scale-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 2px;
        }
        .scale-item .scale-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .scale-item .scale-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            white-space: nowrap;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .scale-item .scale-tag.recommend {
            background: rgba(0, 208, 255, 0.1);
            color: #0088AA;
            border: 1px solid rgba(0, 208, 255, 0.25);
        }
        .scale-item .scale-tag.optional {
            background: rgba(100, 116, 139, 0.08);
            color: var(--text-muted);
            border: 1px solid rgba(100, 116, 139, 0.2);
        }
        .scale-item .scale-tag.strict {
            background: rgba(122, 92, 255, 0.08);
            color: var(--neon-purple);
            border: 1px solid rgba(122, 92, 255, 0.22);
        }

        /* ========== 推荐配置卡 ========== */
        .config-tiers {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .config-tier-card {
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            position: relative;
            transition: box-shadow var(--transition-med), transform var(--transition-med), border-color var(--transition-med);
            overflow: hidden;
        }
        .config-tier-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--bg-soft-2);
        }
        .config-tier-card.featured::before {
            background: linear-gradient(90deg, var(--primary-bright), var(--neon));
        }
        .config-tier-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(43, 78, 255, 0.2);
        }
        .config-tier-card .tier-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
        }
        .config-tier-card .tier-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
        }
        .config-tier-card .tier-badge {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 6px;
            background: rgba(0, 208, 255, 0.08);
            color: #0088AA;
            border: 1px solid rgba(0, 208, 255, 0.2);
        }
        .config-tier-card .tier-badge.featured {
            background: rgba(43, 78, 255, 0.08);
            color: var(--primary);
            border: 1px solid rgba(43, 78, 255, 0.2);
        }
        .config-tier-card .tier-list {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .config-tier-card .tier-list li {
            font-size: 14px;
            color: var(--text-main);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }
        .config-tier-card .tier-list li i {
            color: var(--neon);
            font-size: 13px;
            margin-top: 5px;
            flex-shrink: 0;
        }
        .config-tier-card .tier-list li i.fa-times-circle {
            color: var(--text-light);
        }
        .config-tier-card .tier-footer {
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-section);
        }
        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            background: var(--bg-section);
            transition: box-shadow var(--transition-med);
        }
        .accordion-custom .accordion-item:hover {
            box-shadow: var(--card-shadow-hover);
        }
        .accordion-custom .accordion-button {
            background: var(--bg-section);
            color: var(--ink);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(43, 78, 255, 0.04);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: var(--focus-ring);
            border-radius: 0;
        }
        .accordion-custom .accordion-button::after {
            display: none;
        }
        .accordion-custom .accordion-icon {
            font-size: 14px;
            color: var(--primary-bright);
            transition: transform var(--transition-med);
            flex-shrink: 0;
        }
        .accordion-custom .accordion-button:not(.collapsed) .accordion-icon {
            transform: rotate(180deg);
            color: var(--neon);
        }
        .accordion-custom .accordion-body {
            padding: 6px 22px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            background: var(--bg-section);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--nav-bg) 0%, var(--nav-bg-light) 55%, #1a2450 100%);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 208, 255, 0.1) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(122, 92, 255, 0.08) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(24px, 2.6vw, 34px);
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.65);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: 0 4px 14px rgba(31, 58, 147, 0.25);
        }
        .btn-primary-custom:hover {
            background: var(--primary-bright);
            color: #FFFFFF;
            box-shadow: 0 6px 22px rgba(43, 78, 255, 0.35);
            transform: translateY(-2px);
        }
        .btn-neon-custom {
            background: var(--neon);
            color: var(--nav-bg);
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: 0 4px 18px rgba(0, 208, 255, 0.3);
        }
        .btn-neon-custom:hover {
            background: #33D9FF;
            color: var(--nav-bg);
            box-shadow: 0 6px 28px rgba(0, 208, 255, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 11px 28px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .btn-outline-custom:hover {
            background: rgba(31, 58, 147, 0.06);
            color: var(--primary-bright);
            border-color: var(--primary-bright);
            box-shadow: 0 4px 14px rgba(31, 58, 147, 0.12);
        }
        .btn-outline-light-custom {
            background: transparent;
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 28px;
            border-radius: var(--radius-btn);
            border: 2px solid rgba(255, 255, 255, 0.5);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
        }
        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            border-color: #FFFFFF;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--nav-bg);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
            border-top: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF) 1;
        }
        .footer-custom .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
            text-decoration: none;
        }
        .footer-custom .footer-brand span {
            color: var(--neon);
        }
        .footer-custom .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 340px;
        }
        .footer-custom h5 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-custom .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 5px 0;
            text-decoration: none;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }
        .footer-custom .footer-link:hover {
            color: var(--neon);
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 40px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--neon);
        }
        .footer-bottom .footer-divider {
            color: rgba(255, 255, 255, 0.2);
            margin: 0 8px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .data-card-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 16px;
            }
            .config-tiers {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 992px) {
            .data-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .config-tiers {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-config .hero-visual {
                min-height: 180px;
            }
            section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .data-card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .config-tiers {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .data-card {
                padding: 18px 16px;
            }
            .data-card .data-number {
                font-size: 28px;
            }
            .param-card {
                padding: 20px 16px;
            }
            .scale-item {
                flex-wrap: wrap;
                padding: 14px;
            }
            .scale-item .scale-tag {
                margin-left: 24px;
            }
            .hero-config {
                padding: 32px 0 28px;
            }
            .hero-config h1 {
                font-size: 26px;
            }
            section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .footer-custom {
                padding: 40px 0 0;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }
        @media (max-width: 520px) {
            .data-card-grid {
                grid-template-columns: 1fr;
            }
            .param-card {
                margin-bottom: 14px;
            }
            .breadcrumb-custom {
                font-size: 12px;
                flex-wrap: wrap;
            }
            .hero-config h1 {
                font-size: 23px;
            }
            .hero-config .hero-sub {
                font-size: 14px;
            }
            .hero-config .hero-badges {
                gap: 8px;
            }
            .hero-config .hero-badge {
                font-size: 12px;
                padding: 5px 10px;
            }
            .scale-item {
                flex-direction: column;
                gap: 8px;
            }
            .scale-item .scale-tag {
                margin-left: 0;
                align-self: flex-start;
            }
            .btn-primary-custom,
            .btn-neon-custom,
            .btn-outline-custom,
            .btn-outline-light-custom {
                font-size: 14px;
                padding: 10px 20px;
            }
            .cta-actions {
                flex-direction: column;
            }
        }

/* roulang page: category5 */
:root {
            --bg-page: #F5F7FC;
            --bg-section: #FFFFFF;
            --bg-soft: #F0F4FA;
            --bg-soft-2: #E8EEF7;
            --primary: #1F3A93;
            --primary-bright: #2B4EFF;
            --primary-dark: #162A6B;
            --neon: #00D0FF;
            --neon-purple: #7A5CFF;
            --ink: #0F172A;
            --text-main: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: rgba(15, 40, 100, 0.08);
            --border-strong: rgba(15, 40, 100, 0.14);
            --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
            --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-img: 14px;
            --nav-bg: #0A0E1A;
            --nav-bg-light: #0D1226;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 88px;
            --section-pad-mobile: 48px;
            --transition-fast: 0.22s ease;
            --transition-med: 0.32s ease;
            --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: var(--radius-btn);
        }
        .text-muted-custom {
            color: var(--text-muted);
        }
        .text-small {
            font-size: 14px;
            color: var(--text-muted);
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary-bright);
            background: rgba(43, 78, 255, 0.06);
            border: 1px solid rgba(43, 78, 255, 0.15);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .bg-white-section {
            background: var(--bg-section);
        }
        .bg-soft-section {
            background: var(--bg-soft);
        }
        .bg-soft-2-section {
            background: var(--bg-soft-2);
        }

        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--nav-bg);
            padding: 0;
            height: 68px;
            border-bottom: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }
        .navbar-custom .navbar-brand span {
            color: var(--neon);
        }
        .navbar-custom .navbar-brand i {
            color: var(--neon);
            font-size: 1.1rem;
        }
        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-custom .nav-link.active {
            color: var(--neon);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
            background: rgba(0, 208, 255, 0.08);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--neon);
            margin: 4px auto 0;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
        }
        .navbar-custom .btn-nav-cta {
            background: linear-gradient(135deg, var(--neon) 0%, var(--primary-bright) 100%);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 14px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            border: none;
            box-shadow: 0 0 16px rgba(0, 208, 255, 0.35);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .navbar-custom .btn-nav-cta:hover {
            background: linear-gradient(135deg, #0AB8E0 0%, #2240D8 100%);
            color: #FFFFFF;
            box-shadow: 0 0 24px rgba(0, 208, 255, 0.5);
            transform: translateY(-1px);
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            padding: 6px 12px;
            border-radius: 8px;
        }
        .navbar-custom .navbar-toggler:focus {
            box-shadow: var(--focus-ring);
        }
        @media (max-width: 991px) {
            .navbar-custom {
                height: auto;
                min-height: 64px;
            }
            .navbar-custom .navbar-collapse {
                background: var(--nav-bg);
                padding: 16px;
                border-radius: 0 0 16px 16px;
                margin-top: 0;
                box-shadow: 0 12px 24px rgba(10, 20, 50, 0.2);
            }
            .navbar-custom .nav-link {
                padding: 10px 14px;
                border-radius: 8px;
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
            .navbar-custom .btn-nav-cta {
                margin-top: 8px;
                justify-content: center;
            }
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-custom {
            background: transparent;
            padding: 20px 0 0;
            margin: 0;
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary-bright);
        }
        .breadcrumb-custom .current {
            color: var(--primary);
            font-weight: 600;
        }
        .breadcrumb-custom .separator {
            color: var(--text-light);
            font-size: 12px;
        }

        /* ========== Hero FAQ ========== */
        .hero-faq {
            background: linear-gradient(160deg, #F5F7FC 0%, #F0F4FA 60%, #E8EEF7 100%);
            position: relative;
            overflow: hidden;
            padding-top: 36px;
            padding-bottom: 56px;
        }
        .hero-faq::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(0, 208, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-faq .hero-title {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.25;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .hero-faq .hero-title .highlight {
            color: var(--primary-bright);
            position: relative;
        }
        .hero-faq .hero-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.85;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .hero-faq .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .hero-faq .stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-faq .stat-item i {
            color: var(--neon);
            font-size: 20px;
        }
        .hero-faq .stat-item .stat-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
        }
        .hero-faq .stat-item .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .hero-faq .hero-cover {
            position: relative;
            z-index: 1;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--card-shadow-hover);
            min-height: 240px;
            background: linear-gradient(135deg, #1F3A93 0%, #2B4EFF 50%, #00D0FF 100%);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-faq .hero-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card);
        }
        .hero-faq .hero-cover .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 26, 0.1) 0%, rgba(10, 14, 26, 0.35) 100%);
            border-radius: var(--radius-card);
            display: flex;
            align-items: flex-end;
            padding: 24px;
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
        }

        /* ========== FAQ 主体 ========== */
        .faq-layout {
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: 36px;
            align-items: start;
        }
        .faq-sidebar {
            position: sticky;
            top: 88px;
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--card-shadow);
        }
        .faq-sidebar .sidebar-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-sidebar .sidebar-title i {
            color: var(--neon);
        }
        .faq-sidebar .anchor-link {
            display: block;
            padding: 9px 14px;
            font-size: 14px;
            color: var(--text-main);
            border-radius: 8px;
            transition: all var(--transition-fast);
            margin-bottom: 2px;
            border-left: 2px solid transparent;
        }
        .faq-sidebar .anchor-link:hover {
            background: var(--bg-soft);
            color: var(--primary);
            border-left-color: var(--neon);
        }
        .faq-sidebar .anchor-link.active {
            background: rgba(0, 208, 255, 0.08);
            color: var(--primary);
            font-weight: 600;
            border-left-color: var(--neon);
        }
        .faq-content {
            min-width: 0;
        }
        .faq-group {
            margin-bottom: 36px;
            scroll-margin-top: 88px;
        }
        .faq-group-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }
        .faq-group-header .group-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary-bright) 0%, var(--neon) 100%);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .faq-group-header h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            margin: 0;
            letter-spacing: 0.01em;
        }
        .faq-group-header .group-count {
            font-size: 13px;
            color: var(--text-muted);
            background: var(--bg-soft);
            padding: 2px 10px;
            border-radius: 20px;
            font-weight: 500;
        }
        .accordion-faq .accordion-item {
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--bg-section);
            box-shadow: 0 2px 10px rgba(10, 20, 50, 0.03);
            transition: box-shadow var(--transition-fast);
        }
        .accordion-faq .accordion-item:hover {
            box-shadow: var(--card-shadow);
        }
        .accordion-faq .accordion-button {
            background: var(--bg-section);
            color: var(--ink);
            font-weight: 650;
            font-size: 15px;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            border-radius: 12px !important;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition-fast);
        }
        .accordion-faq .accordion-button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background: none;
            width: auto;
            height: auto;
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .accordion-faq .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--primary-bright);
        }
        .accordion-faq .accordion-button:not(.collapsed) {
            background: rgba(43, 78, 255, 0.04);
            color: var(--primary);
        }
        .accordion-faq .accordion-button:focus {
            box-shadow: var(--focus-ring);
            border-radius: 12px;
        }
        .accordion-faq .accordion-button .q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 208, 255, 0.12);
            color: var(--primary-bright);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
        }
        .accordion-faq .accordion-body {
            padding: 0 20px 18px 58px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }
        .accordion-faq .accordion-body strong {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== 标签过滤 ========== */
        .filter-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .filter-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            background: var(--bg-section);
            border: 1px solid var(--border-strong);
            border-radius: 20px;
            cursor: pointer;
            transition: all var(--transition-fast);
            user-select: none;
        }
        .filter-badge:hover {
            border-color: var(--neon);
            color: var(--primary);
            background: rgba(0, 208, 255, 0.06);
        }
        .filter-badge.active {
            background: linear-gradient(135deg, var(--primary-bright) 0%, var(--primary) 100%);
            color: #FFFFFF;
            border-color: transparent;
            box-shadow: 0 4px 14px rgba(43, 78, 255, 0.3);
        }
        .filter-badge .badge-icon {
            font-size: 13px;
        }

        /* ========== CTA ========== */
        .cta-band {
            background: linear-gradient(135deg, #1F3A93 0%, #162A6B 60%, #0D1226 100%);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(10, 20, 50, 0.2);
            margin-top: 20px;
        }
        .cta-band::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 208, 255, 0.18) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-band h3 {
            color: #FFFFFF;
            font-size: 24px;
            font-weight: 750;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-band p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
            max-width: 520px;
        }
        .cta-band .btn-cta-primary {
            background: linear-gradient(135deg, var(--neon) 0%, var(--primary-bright) 100%);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            box-shadow: 0 0 20px rgba(0, 208, 255, 0.4);
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-band .btn-cta-primary:hover {
            background: linear-gradient(135deg, #0AB8E0 0%, #2240D8 100%);
            color: #FFFFFF;
            box-shadow: 0 0 30px rgba(0, 208, 255, 0.55);
            transform: translateY(-2px);
        }
        .cta-band .btn-cta-ghost {
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-band .btn-cta-ghost:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.4);
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--nav-bg);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 56px;
            padding-bottom: 20px;
            border-top: 2px solid;
            border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
        }
        .footer-custom .footer-brand {
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            text-decoration: none;
        }
        .footer-custom .footer-brand span {
            color: var(--neon);
        }
        .footer-custom .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-custom h5 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-custom .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 5px 0;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }
        .footer-custom .footer-link:hover {
            color: var(--neon);
            padding-left: 4px;
        }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-custom .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }
        .footer-custom .footer-bottom a:hover {
            color: var(--neon);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .faq-sidebar {
                position: static;
                display: flex;
                flex-wrap: wrap;
                gap: 6px;
                align-items: center;
                padding: 14px 16px;
            }
            .faq-sidebar .sidebar-title {
                margin-bottom: 0;
                margin-right: 8px;
            }
            .faq-sidebar .anchor-link {
                padding: 6px 12px;
                font-size: 13px;
                border-left: none;
                border-radius: 6px;
            }
            .faq-sidebar .anchor-link.active {
                border-left: none;
            }
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
            .hero-faq {
                padding-top: 24px;
                padding-bottom: 36px;
            }
            .hero-faq .hero-title {
                font-size: clamp(24px, 6vw, 32px);
            }
            .hero-faq .hero-stats {
                gap: 16px;
            }
            .hero-faq .hero-cover {
                min-height: 180px;
                margin-top: 16px;
            }
            .faq-group-header h2 {
                font-size: 18px;
            }
            .accordion-faq .accordion-button {
                font-size: 14px;
                padding: 14px 16px;
            }
            .accordion-faq .accordion-body {
                padding: 0 14px 14px 48px;
                font-size: 14px;
            }
            .cta-band {
                padding: 28px 20px;
            }
            .cta-band h3 {
                font-size: 20px;
            }
            .footer-custom {
                padding-top: 36px;
            }
        }
        @media (max-width: 576px) {
            .faq-sidebar {
                flex-direction: column;
                align-items: stretch;
            }
            .faq-sidebar .sidebar-title {
                margin-bottom: 8px;
            }
            .filter-badge {
                font-size: 12px;
                padding: 6px 12px;
            }
            .hero-faq .stat-item .stat-num {
                font-size: 20px;
            }
            .cta-band .btn-cta-primary,
            .cta-band .btn-cta-ghost {
                display: flex;
                margin-bottom: 8px;
                justify-content: center;
            }
        }

/* roulang page: category7 */
:root {
  --bg-page: #F5F7FC;
  --bg-section: #FFFFFF;
  --bg-soft: #F0F4FA;
  --bg-soft-2: #E8EEF7;
  --primary: #1F3A93;
  --primary-bright: #2B4EFF;
  --primary-dark: #162A6B;
  --neon: #00D0FF;
  --neon-purple: #7A5CFF;
  --ink: #0F172A;
  --text-main: #334155;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border: rgba(15, 40, 100, 0.08);
  --border-strong: rgba(15, 40, 100, 0.14);
  --card-shadow: 0 4px 20px rgba(10, 20, 50, 0.06);
  --card-shadow-hover: 0 12px 34px rgba(10, 20, 50, 0.11);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-input: 10px;
  --radius-img: 14px;
  --nav-bg: #0A0E1A;
  --nav-bg-light: #0D1226;
  --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --container-max: 1200px;
  --section-pad: 80px;
  --section-pad-mobile: 44px;
  --transition-fast: 0.22s ease;
  --transition-med: 0.32s ease;
  --focus-ring: 0 0 0 4px rgba(0, 208, 255, 0.28);
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-stack);
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.75;
  font-size: 16px;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}
a:hover {
  color: var(--primary-bright);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-btn);
}
.text-muted-custom {
  color: var(--text-muted);
}
.text-small {
  font-size: 14px;
  color: var(--text-muted);
}
.container-custom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
@media (max-width: 576px) {
  .container-custom {
    padding-left: 16px;
    padding-right: 16px;
  }
}
section {
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
  position: relative;
}
@media (max-width: 768px) {
  section {
    padding-top: var(--section-pad-mobile);
    padding-bottom: var(--section-pad-mobile);
  }
}
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-bright);
  background: rgba(43, 78, 255, 0.06);
  border: 1px solid rgba(43, 78, 255, 0.15);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.bg-white-section {
  background: var(--bg-section);
}
.bg-soft-section {
  background: var(--bg-soft);
}
.bg-soft-2-section {
  background: var(--bg-soft-2);
}
/* ========== 导航 ========== */
.navbar-custom {
  background: var(--nav-bg);
  padding: 0;
  height: 68px;
  border-bottom: 2px solid;
  border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF, #2B4EFF) 1;
  position: sticky;
  top: 0;
  z-index: 1050;
  box-shadow: 0 4px 16px rgba(10, 20, 50, 0.16);
}
.navbar-custom .navbar-brand {
  font-weight: 800;
  font-size: 1.25rem;
  color: #FFFFFF;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0;
}
.navbar-custom .navbar-brand span {
  color: var(--neon);
}
.navbar-custom .navbar-brand i {
  color: var(--neon);
  font-size: 1.1rem;
}
.navbar-custom .nav-link {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.navbar-custom .nav-link:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.06);
}
.navbar-custom .nav-link.active {
  color: var(--neon);
  font-weight: 600;
  text-shadow: 0 0 12px rgba(0, 208, 255, 0.55);
  background: rgba(0, 208, 255, 0.08);
}
.navbar-custom .nav-link.active::after {
  content: '';
  display: block;
  width: 22px;
  height: 2px;
  background: var(--neon);
  margin: 4px auto 0;
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(0, 208, 255, 0.6);
}
.navbar-custom .btn-nav-cta {
  background: var(--neon);
  color: #0A0E1A;
  font-weight: 700;
  font-size: 14px;
  padding: 8px 18px;
  border-radius: var(--radius-btn);
  border: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}
.navbar-custom .btn-nav-cta:hover {
  background: #33D8FF;
  box-shadow: 0 0 18px rgba(0, 208, 255, 0.45);
  transform: translateY(-1px);
  color: #0A0E1A;
}
.navbar-custom .navbar-toggler {
  border: none;
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.3rem;
  padding: 4px 10px;
  box-shadow: none;
}
.navbar-custom .navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(0, 208, 255, 0.3);
}
@media (max-width: 991px) {
  .navbar-custom {
    height: auto;
    min-height: 68px;
  }
  .navbar-custom .navbar-collapse {
    background: var(--nav-bg-light);
    padding: 12px 16px 16px;
    border-radius: 0 0 16px 16px;
    border: 1px solid rgba(255, 255, 255, 0.06);
  }
  .navbar-custom .nav-link {
    padding: 10px 12px;
  }
}
/* ========== 面包屑 ========== */
.breadcrumb-bar {
  background: var(--bg-section);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.breadcrumb-custom {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
  padding: 0;
  list-style: none;
}
.breadcrumb-custom li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb-custom li:not(:last-child)::after {
  content: '/';
  color: var(--text-light);
  font-size: 12px;
}
.breadcrumb-custom a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.breadcrumb-custom a:hover {
  color: var(--primary-bright);
}
.breadcrumb-custom .current {
  color: var(--primary);
  font-weight: 600;
}
/* ========== Hero ========== */
.hero-category {
  background: linear-gradient(135deg, #F5F7FC 0%, #F0F4FA 45%, #E8EEF7 100%);
  padding: 64px 0 52px;
  position: relative;
  overflow: hidden;
}
.hero-category::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43, 78, 255, 0.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero-category::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 10%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 208, 255, 0.05) 0%, transparent 70%);
  pointer-events: none;
}
.hero-category .hero-inner {
  position: relative;
  z-index: 1;
}
.hero-category h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.28;
  color: var(--ink);
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}
.hero-category h1 .highlight {
  color: var(--primary-bright);
  position: relative;
}
.hero-category h1 .highlight::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 6px;
  background: rgba(0, 208, 255, 0.25);
  border-radius: 4px;
  z-index: -1;
}
.hero-category .lead {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
  margin-bottom: 24px;
}
.hero-category .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-category .badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.hero-category .badge-group .tag-badge {
  background: #FFFFFF;
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.hero-category .badge-group .tag-badge i {
  color: var(--primary-bright);
  font-size: 10px;
}
/* ========== 按钮 ========== */
.btn-primary-custom {
  background: var(--primary-bright);
  color: #FFFFFF;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  border: none;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
}
.btn-primary-custom:hover {
  background: #1D3FFF;
  color: #FFFFFF;
  box-shadow: 0 4px 18px rgba(43, 78, 255, 0.35);
  transform: translateY(-2px);
}
.btn-primary-custom:focus-visible {
  box-shadow: var(--focus-ring);
}
.btn-outline-custom {
  background: transparent;
  color: var(--primary);
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-strong);
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
}
.btn-outline-custom:hover {
  background: var(--bg-soft);
  border-color: var(--primary-bright);
  color: var(--primary-bright);
  transform: translateY(-2px);
}
.btn-neon-custom {
  background: var(--neon);
  color: #0A0E1A;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  border: none;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
}
.btn-neon-custom:hover {
  background: #33D8FF;
  color: #0A0E1A;
  box-shadow: 0 0 22px rgba(0, 208, 255, 0.5);
  transform: translateY(-2px);
}
/* ========== 筛选标签 ========== */
.filter-section {
  margin-bottom: 28px;
}
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-strong);
  background: #FFFFFF;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin: 4px;
}
.filter-chip:hover {
  border-color: var(--primary-bright);
  color: var(--primary-bright);
  background: rgba(43, 78, 255, 0.04);
}
.filter-chip.active {
  border-color: var(--primary-bright);
  color: #FFFFFF;
  background: var(--primary-bright);
  box-shadow: 0 2px 10px rgba(43, 78, 255, 0.25);
}
.filter-chip i {
  font-size: 11px;
}
/* ========== 资源卡片 ========== */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 992px) {
  .resource-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 576px) {
  .resource-grid {
    grid-template-columns: 1fr;
  }
}
.resource-card {
  background: #FFFFFF;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  padding: 22px 20px;
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition-med), transform var(--transition-med), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.resource-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(43, 78, 255, 0.2);
}
.resource-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-bright), var(--neon));
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.resource-card:hover::before {
  opacity: 1;
}
.resource-card .card-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 12px;
}
.resource-card .card-icon-wrap.blue {
  background: rgba(43, 78, 255, 0.08);
  color: var(--primary-bright);
}
.resource-card .card-icon-wrap.cyan {
  background: rgba(0, 208, 255, 0.08);
  color: #0099BB;
}
.resource-card .card-icon-wrap.purple {
  background: rgba(122, 92, 255, 0.08);
  color: var(--neon-purple);
}
.resource-card .card-icon-wrap.green {
  background: rgba(0, 200, 150, 0.08);
  color: #00886A;
}
.resource-card .card-icon-wrap.orange {
  background: rgba(255, 140, 0, 0.08);
  color: #B36B00;
}
.resource-card h3 {
  font-size: 17px;
  font-weight: 650;
  color: var(--ink);
  margin-bottom: 8px;
  line-height: 1.45;
}
.resource-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
  flex-grow: 1;
}
.resource-card .meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.resource-card .meta-row .meta-chip {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 12px;
  background: var(--bg-soft);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.resource-card .card-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.resource-card .btn-download {
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: var(--radius-btn);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}
.resource-card .btn-download:hover {
  background: var(--primary-bright);
  color: #FFFFFF;
  border-color: var(--primary-bright);
  box-shadow: 0 2px 10px rgba(43, 78, 255, 0.25);
}
.resource-card .btn-download-text {
  font-size: 12px;
  color: var(--text-light);
  transition: color var(--transition-fast);
}
.resource-card .btn-download-text:hover {
  color: var(--primary-bright);
}
/* 图片卡 */
.resource-card.with-img {
  padding: 0;
  overflow: hidden;
}
.resource-card.with-img .card-img-wrap {
  position: relative;
  height: 160px;
  overflow: hidden;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: var(--bg-soft-2);
}
.resource-card.with-img .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.resource-card.with-img:hover .card-img-wrap img {
  transform: scale(1.05);
}
.resource-card.with-img .card-content {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.resource-card.with-img::before {
  border-radius: var(--radius-card) var(--radius-card) 0 0;
}
.resource-card.featured-card {
  border: 2px solid rgba(43, 78, 255, 0.2);
  background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFF 100%);
}
.resource-card.featured-card::before {
  opacity: 1;
}
.resource-card.text-only-card {
  background: var(--bg-soft);
  border-color: rgba(15, 40, 100, 0.06);
}
.resource-card.text-only-card:hover {
  border-color: rgba(43, 78, 255, 0.15);
  background: #FFFFFF;
}
/* 大号跨列卡 */
.resource-card.span-2 {
  grid-column: span 2;
}
@media (max-width: 992px) {
  .resource-card.span-2 {
    grid-column: span 2;
  }
}
@media (max-width: 576px) {
  .resource-card.span-2 {
    grid-column: span 1;
  }
}
/* ========== 下载流程 ========== */
.steps-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  counter-reset: step;
}
.step-mini {
  flex: 1 1 200px;
  min-width: 180px;
  background: #FFFFFF;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  padding: 20px 18px;
  position: relative;
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition-med), transform var(--transition-med);
}
.step-mini:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-3px);
}
.step-mini .step-num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary-bright);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  box-shadow: 0 0 14px rgba(43, 78, 255, 0.3);
}
.step-mini h4 {
  font-size: 15px;
  font-weight: 650;
  color: var(--ink);
  margin-bottom: 6px;
}
.step-mini p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}
/* ========== 安全提示 ========== */
.safe-tip-card {
  background: #FFFFFF;
  border-radius: var(--radius-card);
  padding: 28px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.safe-tip-card .tip-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 200, 150, 0.08);
  color: #00886A;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.safe-tip-card h4 {
  font-size: 16px;
  font-weight: 650;
  color: var(--ink);
  margin-bottom: 6px;
}
.safe-tip-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}
.safe-tip-card ul {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
/* ========== FAQ ========== */
.accordion-custom .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card) !important;
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(10, 20, 50, 0.03);
  background: #FFFFFF;
}
.accordion-custom .accordion-button {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  background: #FFFFFF;
  padding: 16px 20px;
  border-radius: var(--radius-card) !important;
  box-shadow: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.accordion-custom .accordion-button:not(.collapsed) {
  background: #F8FAFF;
  color: var(--primary-bright);
  box-shadow: none;
}
.accordion-custom .accordion-button::after {
  transition: transform var(--transition-fast);
}
.accordion-custom .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(0, 208, 255, 0.2);
}
.accordion-custom .accordion-body {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  padding: 14px 20px 18px;
  background: #FDFDFE;
}
/* ========== CTA 区域 ========== */
.cta-band {
  background: var(--nav-bg);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-bright), var(--neon), var(--neon-purple));
}
.cta-band::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 208, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-band .cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.cta-band h2 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 750;
  color: #FFFFFF;
  margin-bottom: 8px;
}
.cta-band p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  margin-bottom: 0;
  max-width: 520px;
}
.cta-band .cta-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
/* ========== 页脚 ========== */
.footer-custom {
  background: var(--nav-bg);
  padding: 56px 0 0;
  border-top: 2px solid;
  border-image: linear-gradient(90deg, #2B4EFF, #00D0FF, #7A5CFF) 1;
}
.footer-custom .footer-brand {
  font-weight: 800;
  font-size: 1.2rem;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.footer-custom .footer-brand span {
  color: var(--neon);
}
.footer-custom .footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.75;
  margin-bottom: 16px;
}
.footer-custom h5 {
  font-size: 15px;
  font-weight: 650;
  color: #FFFFFF;
  margin-bottom: 16px;
}
.footer-custom .footer-link {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  margin-bottom: 10px;
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.footer-custom .footer-link:hover {
  color: var(--neon);
  transform: translateX(4px);
}
.footer-custom .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0;
  margin-top: 36px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.footer-custom .footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition-fast);
}
.footer-custom .footer-bottom a:hover {
  color: var(--neon);
}
.footer-custom .footer-bottom strong {
  color: rgba(255, 255, 255, 0.7);
}
/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .navbar-custom {
    height: auto;
    min-height: 68px;
  }
  .hero-category {
    padding: 44px 0 36px;
  }
  .safe-tip-card {
    flex-direction: column;
  }
  .cta-band .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .resource-card.with-img .card-img-wrap {
    height: 140px;
  }
}
@media (max-width: 576px) {
  .resource-grid {
    grid-template-columns: 1fr;
  }
  .resource-card.span-2 {
    grid-column: span 1;
  }
  .footer-custom .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    text-align: center;
  }
  .btn-primary-custom,
  .btn-outline-custom,
  .btn-neon-custom {
    width: 100%;
    justify-content: center;
  }
  .steps-inline {
    flex-direction: column;
  }
}