/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d1b2a;
            --primary-light: #1b3a50;
            --secondary: #2dd4bf;
            --secondary-dark: #0f766e;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --navy: #0a1628;
            --bg: #f6f9fc;
            --bg-alt: #eef3f8;
            --bg-dark: #0d1b2a;
            --text: #1e293b;
            --text-muted: #5b6b7f;
            --text-light: #8ba0b8;
            --white: #ffffff;
            --border: #dfe7ef;
            --radius: 18px;
            --radius-sm: 10px;
            --radius-lg: 28px;
            --shadow: 0 8px 30px rgba(13, 27, 42, 0.08);
            --shadow-lg: 0 20px 50px rgba(13, 27, 42, 0.15);
            --shadow-accent: 0 8px 30px rgba(245, 158, 11, 0.3);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

        a {
            color: var(--secondary-dark);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--secondary);
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1260px;
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-padding {
            padding: 100px 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 27, 42, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 27, 42, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--white);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }

        .logo:hover {
            color: var(--secondary);
        }

        .logo-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent), #ff8c00);
            color: #fff;
            font-size: 0.6rem;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-left: 4px;
            vertical-align: middle;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }

        .desktop-nav a {
            display: inline-block;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 40px;
            transition: var(--transition);
        }

        .desktop-nav a:hover {
            color: var(--white);
            background: rgba(255, 255, 255, 0.08);
        }

        .desktop-nav a.active {
            color: var(--navy);
            background: var(--secondary);
            box-shadow: 0 4px 15px rgba(45, 212, 191, 0.35);
        }

        .header-cta {
            margin-left: 16px;
        }

        .btn-brand {
            background: linear-gradient(135deg, var(--accent), #ff8c00);
            color: #fff;
            font-weight: 600;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
        }

        .btn-brand:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
            color: #fff;
        }

        .btn-brand i {
            font-size: 0.9rem;
        }

        .btn-outline-light-custom {
            background: transparent;
            color: var(--white);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.6);
            color: var(--white);
            transform: translateY(-2px);
        }

        .btn-lg-custom {
            padding: 14px 38px;
            font-size: 1.05rem;
        }

        /* ===== 移动端底部 Tab ===== */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1200;
            background: rgba(13, 27, 42, 0.97);
            backdrop-filter: blur(18px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: none;
            padding: 8px 10px;
            box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.25);
        }

        .mobile-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            padding: 8px 4px;
            border-radius: 14px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.68rem;
            transition: var(--transition);
        }

        .mobile-tab-bar .tab-item i {
            font-size: 1.25rem;
        }

        .mobile-tab-bar .tab-item.active {
            color: var(--secondary);
            background: rgba(45, 212, 191, 0.1);
        }

        .mobile-tab-bar .tab-item:hover {
            color: var(--white);
        }

        @media (max-width: 768px) {
            .site-header .desktop-nav,
            .site-header .header-cta {
                display: none !important;
            }
            .mobile-tab-bar {
                display: flex !important;
            }
            .header-inner {
                height: 62px;
                justify-content: center;
            }
            body {
                padding-bottom: 70px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.94), rgba(13, 27, 42, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding-top: 100px;
            padding-bottom: 80px;
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 2;
        }

        .hero .hero-content {
            position: relative;
            z-index: 3;
            max-width: 780px;
        }

        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            padding: 8px 20px;
            border-radius: 40px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.85rem;
            margin-bottom: 28px;
        }

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

        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            color: var(--white);
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--secondary), #a7f3d0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 620px;
        }

        .hero .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 50px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }

        .hero-stats .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--white);
            line-height: 1.2;
        }

        .hero-stats .stat-label {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            margin-top: 4px;
        }

        .hero-card-visual {
            position: relative;
            z-index: 3;
        }

        .hero-visual-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(16px);
            border-radius: 24px;
            padding: 30px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
        }

        .hero-visual-card .hvc-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-visual-card .hvc-title {
            color: var(--white);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .hero-visual-card .hvc-badge {
            background: var(--accent);
            color: #fff;
            font-size: 0.7rem;
            padding: 3px 12px;
            border-radius: 20px;
            font-weight: 600;
        }

        .hero-visual-items {
            display: grid;
            gap: 10px;
        }

        .hero-visual-items .hvc-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            padding: 12px 14px;
            transition: var(--transition);
        }

        .hero-visual-items .hvc-item:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .hvc-item .hvc-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            background: rgba(45, 212, 191, 0.15);
            color: var(--secondary);
        }

        .hvc-item .hvc-text {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.85rem;
            font-weight: 500;
        }

        .hvc-item .hvc-arrow {
            margin-left: auto;
            color: rgba(255, 255, 255, 0.3);
            font-size: 0.8rem;
        }

        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.6rem;
            }
            .hero .hero-desc {
                font-size: 1.05rem;
            }
            .hero-visual-card {
                margin-top: 40px;
            }
        }

        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding-top: 110px;
                padding-bottom: 60px;
                text-align: center;
            }
            .hero .hero-badge {
                margin-left: auto;
                margin-right: auto;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero .hero-desc {
                font-size: 0.98rem;
                margin-left: auto;
                margin-right: auto;
            }
            .hero .hero-btns {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
                gap: 30px;
            }
            .hero-stats .stat-num {
                font-size: 1.5rem;
            }
        }

        /* ===== 板块标题 ===== */
        .section-header {
            text-align: center;
            margin-bottom: 64px;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(45, 212, 191, 0.1);
            color: var(--secondary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .section-header h2 {
            font-size: 2.3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            margin-right: 0;
        }

        @media (max-width: 768px) {
            .section-header {
                margin-bottom: 40px;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
        }

        /* ===== 核心功能卡片 ===== */
        .feature-section {
            background: var(--white);
            position: relative;
        }

        .feature-grid .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 38px 32px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-grid .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: var(--secondary);
            transition: var(--transition);
        }

        .feature-grid .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(45, 212, 191, 0.4);
        }

        .feature-grid .feature-card:hover::before {
            height: 100%;
        }

        .feature-card .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 24px;
            background: linear-gradient(135deg, rgba(45, 212, 191, 0.12), rgba(45, 212, 191, 0.04));
            color: var(--secondary-dark);
        }

        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== 分类入口 ===== */
        .category-section {
            background: var(--bg);
        }

        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            display: block;
            height: 100%;
            min-height: 320px;
            background-size: cover;
            background-position: center;
            text-decoration: none;
            transition: var(--transition);
            border: none;
        }

        .category-card .category-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.2) 0%, rgba(13, 27, 42, 0.75) 60%, rgba(13, 27, 42, 0.92) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 30px;
            transition: var(--transition);
        }

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .category-card:hover .category-overlay {
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.3) 0%, rgba(13, 27, 42, 0.8) 50%, rgba(13, 27, 42, 0.95) 100%);
        }

        .category-card .cat-tag {
            display: inline-block;
            background: rgba(245, 158, 11, 0.9);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            align-self: flex-start;
            letter-spacing: 1px;
        }

        .category-card h3 {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .category-card p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .category-card .cat-link {
            color: var(--secondary);
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        @media (max-width: 768px) {
            .category-card {
                min-height: 260px;
            }
            .category-card .category-overlay {
                padding: 22px;
            }
            .category-card h3 {
                font-size: 1.2rem;
            }
        }

        /* ===== 数据/亮点区块 ===== */
        .stats-section {
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.95), rgba(13, 27, 42, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            padding: 80px 0;
        }

        .stats-section .stats-heading {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 400;
            text-align: center;
            max-width: 600px;
            margin: 0 auto 60px;
            line-height: 1.6;
        }

        .stats-section .stats-heading strong {
            color: var(--secondary);
            font-weight: 700;
        }

        .stats-grid .stat-card {
            text-align: center;
            padding: 30px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            transition: var(--transition);
        }

        .stats-grid .stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .stat-card .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.2;
        }

        .stat-card .stat-label {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-top: 8px;
        }

        @media (max-width: 768px) {
            .stats-section .stats-heading {
                font-size: 1.1rem;
                margin-bottom: 40px;
            }
            .stat-card .stat-num {
                font-size: 2rem;
            }
            .stats-grid {
                gap: 16px;
            }
        }

        /* ===== 最新资讯列表 ===== */
        .news-section {
            background: var(--white);
        }

        .news-list {
            display: grid;
            gap: 16px;
        }

        .news-item {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 24px 28px;
            transition: var(--transition);
        }

        .news-item:hover {
            transform: translateX(6px);
            border-color: rgba(45, 212, 191, 0.4);
            background: #fff;
            box-shadow: var(--shadow);
        }

        .news-item .news-cat {
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            white-space: nowrap;
        }

        .news-item .news-content {
            flex: 1;
            min-width: 240px;
        }

        .news-item .news-content h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .news-item .news-content p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-light);
            font-size: 0.8rem;
            white-space: nowrap;
        }

        .news-item .news-meta i {
            font-size: 0.75rem;
        }

        .news-empty {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg);
            border-radius: var(--radius);
            color: var(--text-muted);
            font-size: 1rem;
        }

        @media (max-width: 576px) {
            .news-item {
                padding: 18px;
                gap: 12px;
            }
            .news-item .news-cat {
                font-size: 0.68rem;
            }
            .news-item .news-content h3 {
                font-size: 0.95rem;
            }
            .news-item .news-meta {
                gap: 10px;
                font-size: 0.72rem;
                flex-wrap: wrap;
            }
        }

        /* ===== 流程板块 ===== */
        .process-section {
            background: var(--bg);
        }

        .process-step {
            text-align: center;
            padding: 30px 24px;
            position: relative;
        }

        .process-step .step-num {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(45, 212, 191, 0.3);
        }

        .process-step .step-icon {
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: var(--secondary-dark);
        }

        .process-step h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .process-step p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .process-step::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--border);
            font-size: 1.2rem;
        }

        .process-step:last-child::after {
            display: none;
        }

        @media (max-width: 768px) {
            .process-step::after {
                display: none;
            }
            .process-step {
                margin-bottom: 24px;
            }
        }

        /* ===== 热门推荐 ===== */
        .recommend-section {
            background: var(--white);
        }

        .recommend-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            display: block;
            text-decoration: none;
            color: inherit;
        }

        .recommend-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            color: inherit;
        }

        .recommend-card .rc-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .recommend-card .rc-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(13, 27, 42, 0.8);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }

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

        .recommend-card .rc-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .recommend-card .rc-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .recommend-card .rc-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-light);
            font-size: 0.8rem;
        }

        @media (max-width: 768px) {
            .recommend-card .rc-img {
                height: 150px;
            }
        }

        /* ===== FAQ 板块 ===== */
        .faq-section {
            background: var(--bg);
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(45, 212, 191, 0.4);
        }

        .faq-item.active {
            box-shadow: var(--shadow);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 26px;
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
            font-size: 1rem;
            user-select: none;
        }

        .faq-item .faq-question i {
            color: var(--secondary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
        }

        .faq-item .faq-answer p {
            padding: 0 26px 22px;
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.96), rgba(13, 27, 42, 0.84)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section .cta-inner {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.1rem;
            margin-bottom: 40px;
        }

        .cta-section .btn-brand {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--navy);
            color: rgba(255, 255, 255, 0.6);
            padding: 80px 0 100px;
        }

        .site-footer .footer-logo {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .site-footer .footer-logo i {
            color: var(--secondary);
        }

        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }

        .site-footer .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            display: block;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: var(--secondary);
            padding-left: 6px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 60px;
            padding-top: 30px;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.82rem;
        }

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

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

        @media (max-width: 768px) {
            .site-footer {
                padding: 60px 0 100px;
            }
            .site-footer .footer-links {
                margin-top: 30px;
            }
        }

        /* ===== 通用卡片分类导航（分类页复用） ===== */
        .nav-card-link {
            display: block;
            border-radius: var(--radius-sm);
            background: #fff;
            border: 1px solid var(--border);
            padding: 24px;
            color: var(--primary);
            transition: var(--transition);
            height: 100%;
        }

        .nav-card-link:hover {
            transform: translateY(-4px);
            color: var(--secondary-dark);
            box-shadow: var(--shadow);
        }

        .nav-card-link i {
            font-size: 1.5rem;
            color: var(--secondary-dark);
            margin-bottom: 14px;
            display: block;
        }

        .nav-card-link h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .nav-card-link span {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ===== 内页 Banner（分类页复用） ===== */
        .page-banner {
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92), rgba(13, 27, 42, 0.8)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 150px 0 70px;
            text-align: center;
        }

        .page-banner h1 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .page-banner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 110px 0 50px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== 内容网格（分类页复用） ===== */
        .content-list-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 28px;
            transition: var(--transition);
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            align-items: flex-start;
            margin-bottom: 18px;
        }

        .content-list-card:hover {
            box-shadow: var(--shadow);
            border-color: rgba(45, 212, 191, 0.4);
        }

        .content-list-card .clc-thumb {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
        }

        .content-list-card .clc-body {
            flex: 1;
            min-width: 220px;
        }

        .content-list-card .clc-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .content-list-card .clc-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .content-list-card .clc-body .clc-meta {
            font-size: 0.78rem;
            color: var(--text-light);
        }

        @media (max-width: 576px) {
            .content-list-card {
                padding: 18px;
            }
            .content-list-card .clc-thumb {
                width: 100%;
                height: 100px;
            }
        }

        /* ===== 分页 ===== */
        .pagination-custom {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
        }

        .pagination-custom a,
        .pagination-custom span {
            min-width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .pagination-custom a:hover {
            border-color: var(--secondary);
            color: var(--secondary-dark);
        }

        .pagination-custom .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Bootstrap 重置 ===== */
        .btn {
            border-radius: 40px;
            font-weight: 500;
        }

        .card {
            border-radius: var(--radius-sm);
        }

        .form-control {
            border-radius: 12px;
            border: 1px solid var(--border);
            padding: 12px 16px;
        }

        .form-control:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 0.2rem rgba(45, 212, 191, 0.15);
        }

        /* ===== 可访问性焦点 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(45, 212, 191, 0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 992px) {
            .desktop-nav a {
                font-size: 0.88rem;
                padding: 8px 12px;
            }
            .header-cta .btn-brand {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 576px) {
            .hero h1 {
                font-size: 1.7rem;
                letter-spacing: -0.5px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .feature-grid .feature-card {
                padding: 26px 20px;
            }
            .hero-stats .stat-item {
                flex: 1 1 40%;
                margin-bottom: 12px;
            }
        }

        /* ===== 动画效果 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            animation: fadeUp 0.7s ease forwards;
        }

        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
:root {
            --primary: #7b5eff;
            --primary-rgb: 123, 94, 255;
            --primary-dark: #5b3fd4;
            --secondary: #00d4aa;
            --accent: #ffb347;
            --bg-dark: #0a0e1a;
            --bg-dark-2: #111827;
            --bg-body: #f3f4f8;
            --bg-light: #f8fafc;
            --text-main: #1e293b;
            --text-muted: #5f6b7c;
            --text-light: #f1f5f9;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-sm: 9px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.10);
            --transition: all 0.32s cubic-bezier(0.4, 0, 0.2, 1);
            --header-height: 74px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            padding: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            box-shadow: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .btn-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.28);
            line-height: 1.4;
            cursor: pointer;
        }
        .btn-brand:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 8px 26px rgba(var(--primary-rgb), 0.38);
            transform: translateY(-2px);
        }
        .btn-brand:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(var(--primary-rgb), 0.4);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.45);
            color: #fff;
            padding: 9px 22px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg-custom {
            padding: 11px 26px;
            font-size: 1rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .section-title-light {
            color: #fff;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 40px;
        }
        .section-sub-light {
            color: rgba(255, 255, 255, 0.62);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 14, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo i {
            color: var(--secondary);
            font-size: 1.4rem;
        }
        .logo-badge {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: unset;
            background-clip: unset;
            color: #fff;
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 30px;
            margin-left: 6px;
            background-color: var(--primary);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .desktop-nav a {
            color: rgba(255, 255, 255, 0.68);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 30px;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .desktop-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .desktop-nav a.active {
            color: #fff;
            background: rgba(var(--primary-rgb), 0.22);
            font-weight: 600;
        }
        .desktop-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--secondary);
        }
        .header-cta .btn-brand {
            padding: 8px 20px;
            font-size: 0.88rem;
        }

        .article-banner {
            position: relative;
            padding: 70px 0 60px;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(10, 14, 26, 0.92), rgba(23, 18, 50, 0.88)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
        }
        .article-banner .breadcrumb-nav {
            font-size: 0.86rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
            display: flex;
            justify-content: center;
            gap: 8px;
        }
        .article-banner .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .article-banner .breadcrumb-nav a:hover {
            color: var(--secondary);
        }
        .article-banner .breadcrumb-nav .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .article-banner .breadcrumb-nav .current {
            color: rgba(255, 255, 255, 0.8);
        }
        .article-banner h1 {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.4;
            letter-spacing: -0.02em;
            max-width: 860px;
            margin: 0 auto 18px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .article-banner .meta-info {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.68);
        }
        .article-banner .meta-info span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner .meta-info i {
            color: var(--secondary);
        }
        .article-banner .category-tag {
            background: rgba(255, 255, 255, 0.12);
            padding: 3px 14px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            font-size: 0.85rem;
            color: #fff;
            display: inline-block;
            margin-top: 4px;
        }

        .article-main-section {
            padding: 50px 0 70px;
            background: var(--bg-body);
        }
        .article-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 40px 48px;
            border: 1px solid rgba(226, 232, 240, 0.7);
            margin-bottom: 40px;
        }
        .article-cover {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 30px;
        }
        .article-cover img {
            width: 100%;
            object-fit: cover;
            max-height: 400px;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: #334155;
        }
        .article-content p {
            margin-bottom: 1.3rem;
        }
        .article-content h2 {
            font-size: 1.45rem;
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--text-main);
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border);
        }
        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-top: 1.6rem;
            margin-bottom: 0.8rem;
            color: var(--text-main);
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.3rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.4rem;
        }
        .article-content blockquote {
            background: var(--bg-light);
            border-left: 4px solid var(--primary);
            padding: 14px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.4rem 0;
            color: var(--text-muted);
            font-style: normal;
        }
        .article-content code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 5px;
            font-size: 0.9em;
            color: #be123c;
        }
        .article-content pre {
            background: var(--bg-dark);
            color: #e2e8f0;
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin-bottom: 1.4rem;
            font-size: 0.9rem;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content table {
            width: 100%;
            margin-bottom: 1.4rem;
            border-collapse: collapse;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content table th {
            background: var(--bg-light);
            font-weight: 600;
        }
        .article-not-found {
            text-align: center;
            padding: 70px 30px;
        }
        .article-not-found i {
            font-size: 3rem;
            color: #cbd5e1;
            margin-bottom: 16px;
            display: block;
        }
        .article-not-found h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-tags {
            margin-top: 30px;
            padding-top: 22px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .article-tags .tag {
            background: var(--bg-light);
            border: 1px solid var(--border);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: rgba(var(--primary-rgb), 0.1);
            border-color: rgba(var(--primary-rgb), 0.3);
            color: var(--primary);
        }

        .sidebar-widget {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 28px;
            margin-bottom: 30px;
        }
        .sidebar-widget .widget-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget .widget-title i {
            color: var(--primary);
        }
        .widget-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .widget-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            color: var(--text-main);
            background: var(--bg-light);
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .widget-links a i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .widget-links a:hover {
            background: rgba(var(--primary-rgb), 0.08);
            border-color: rgba(var(--primary-rgb), 0.2);
            color: var(--primary);
            transform: translateX(4px);
        }
        .widget-contact p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .widget-contact p i {
            color: var(--primary);
            width: 16px;
        }
        .widget-info {
            background: linear-gradient(135deg, var(--bg-dark-2), #1d1a3a);
            color: #fff;
            border: none;
        }
        .widget-info .widget-title {
            color: #fff;
        }
        .widget-info .widget-title i {
            color: var(--secondary);
        }
        .widget-info p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .widget-info .btn-brand {
            margin-top: 10px;
            padding: 8px 20px;
            font-size: 0.88rem;
        }

        .related-section {
            padding: 60px 0 70px;
            background: #fff;
        }
        .related-card {
            background: var(--bg-light);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(var(--primary-rgb), 0.2);
        }
        .related-card .card-img {
            overflow: hidden;
            position: relative;
            height: 160px;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.06);
        }
        .related-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-card .card-body h4 {
            font-size: 0.98rem;
            font-weight: 600;
            line-height: 1.55;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .related-card .card-body p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-meta {
            margin-top: auto;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .faq-section {
            padding: 65px 0;
            background: var(--bg-light);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 26px;
            margin-bottom: 14px;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: rgba(var(--primary-rgb), 0.2);
        }
        .faq-item h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h4 i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .faq-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
            padding-left: 24px;
        }

        .cta-section {
            position: relative;
            padding: 70px 0;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(10, 14, 26, 0.9), rgba(34, 24, 70, 0.88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2.1rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 620px;
            margin: 0 auto 30px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--bg-dark);
            color: #fff;
            padding: 55px 0 90px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .footer-logo i {
            color: var(--secondary);
        }
        .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-links h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.8);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }
        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
            text-decoration: none;
            transform: translateX(3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 22px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 2000;
            background: rgba(10, 14, 26, 0.95);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.24);
        }
        .mobile-tabbar .tabbar-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 8px 6px 10px;
            max-width: 500px;
            margin: 0 auto;
        }
        .mobile-tabbar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.68rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 16px;
            transition: var(--transition);
            width: 20%;
            text-align: center;
        }
        .mobile-tabbar .tab-item i {
            font-size: 1.15rem;
            transition: var(--transition);
        }
        .mobile-tabbar .tab-item.active {
            color: var(--secondary);
            font-weight: 600;
        }
        .mobile-tabbar .tab-item.active i {
            transform: translateY(-2px);
            filter: drop-shadow(0 4px 12px rgba(0, 212, 170, 0.35));
        }
        .mobile-tabbar .tab-item:hover {
            color: #fff;
        }

        @media (max-width: 991.98px) {
            .desktop-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .site-header {
                height: 64px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .article-main-section {
                padding: 35px 0 55px;
            }
            .article-card {
                padding: 28px 24px;
            }
        }
        @media (max-width: 767.98px) {
            body {
                padding-bottom: 0;
            }
            .desktop-nav a {
                font-size: 0.85rem;
                padding: 6px 10px;
            }
            .article-banner {
                padding: 45px 0 40px;
            }
            .article-banner h1 {
                font-size: 1.5rem;
                margin-bottom: 14px;
            }
            .article-banner .meta-info {
                gap: 12px;
                font-size: 0.82rem;
            }
            .article-card {
                padding: 22px 18px;
                margin-bottom: 30px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .related-card .card-img {
                height: 140px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .site-footer {
                padding-bottom: 85px;
            }
            .mobile-tabbar {
                display: block;
            }
            .faq-item {
                padding: 16px 18px;
            }
        }
        @media (max-width: 519.98px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .article-banner {
                padding: 36px 0 32px;
            }
            .article-banner h1 {
                font-size: 1.28rem;
            }
            .article-main-section {
                padding: 24px 0 40px;
            }
            .article-card {
                padding: 16px 14px;
                border-radius: 16px;
            }
            .article-content {
                font-size: 0.97rem;
                line-height: 1.75;
            }
            .article-content h2 {
                font-size: 1.18rem;
            }
            .sidebar-widget {
                padding: 20px 16px;
                margin-bottom: 20px;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.35rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .footer-desc {
                font-size: 0.82rem;
            }
        }
        @media (min-width: 992px) and (max-width: 1199px) {
            .article-card {
                padding: 32px 36px;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #00e5b8;
        --primary-rgb: 0, 229, 184;
        --primary-dark: #00b894;
        --secondary: #7b61ff;
        --secondary-rgb: 123, 97, 255;
        --accent: #ffb347;

        --bg-deep: #060a12;
        --bg-body: #080e18;
        --bg-section: #0b121f;
        --bg-card: #0e1724;
        --bg-card-2: #131e30;
        --bg-elevated: #182438;

        --border: rgba(255, 255, 255, 0.07);
        --border-strong: rgba(255, 255, 255, 0.14);
        --text-light: #e7edf6;
        --text-body: #b9c4d4;
        --text-dim: rgba(255, 255, 255, 0.58);
        --text-faint: rgba(255, 255, 255, 0.36);

        --radius: 18px;
        --radius-sm: 12px;
        --radius-lg: 28px;
        --radius-pill: 50px;

        --shadow-sm: 0 6px 20px rgba(0, 0, 0, 0.2);
        --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
        --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.5);
        --glow-primary: 0 0 40px rgba(0, 229, 184, 0.12);

        --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
        --transition-slow: 0.55s cubic-bezier(0.22, 1, 0.36, 1);

        --nav-height: 76px;
        --section-pad: 100px;
        --container-w: 1280px;
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

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

    body {
        background: var(--bg-body);
        color: var(--text-body);
        font-family: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
        font-size: 16px;
        line-height: 1.75;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }

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

    a {
        color: inherit;
        text-decoration: none;
        transition: color var(--transition), opacity var(--transition), transform var(--transition);
    }

    a:hover {
        color: var(--primary);
        text-decoration: none;
    }

    button,
    input,
    select,
    textarea {
        font-family: inherit;
    }

    button:focus-visible,
    a:focus-visible,
    input:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
        border-radius: 4px;
    }

    .container {
        max-width: var(--container-w);
        padding-left: 24px;
        padding-right: 24px;
    }

    /* ========== 顶部导航 ========== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1050;
        height: var(--nav-height);
        background: rgba(6, 10, 18, 0.78);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border);
        transition: background var(--transition), box-shadow var(--transition);
    }

    .site-header.scrolled {
        background: rgba(6, 10, 18, 0.94);
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: var(--nav-height);
        gap: 24px;
    }

    .logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 1.28rem;
        font-weight: 800;
        color: var(--text-light);
        letter-spacing: -0.02em;
        white-space: nowrap;
        transition: transform var(--transition);
    }

    .logo:hover {
        transform: translateY(-1px);
        color: var(--text-light);
    }

    .logo i {
        color: var(--primary);
        font-size: 1.65rem;
        filter: drop-shadow(0 0 12px rgba(0, 229, 184, 0.45));
    }

    .logo-badge {
        display: inline-block;
        background: linear-gradient(135deg, var(--primary), #4ade80);
        color: #04120e;
        font-size: 0.68rem;
        font-weight: 800;
        padding: 2px 10px;
        border-radius: var(--radius-pill);
        letter-spacing: 0.08em;
        margin-left: 4px;
    }

    .desktop-nav {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .desktop-nav a {
        padding: 10px 20px;
        border-radius: var(--radius-pill);
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--text-dim);
        position: relative;
        transition: all var(--transition);
        border: 1px solid transparent;
    }

    .desktop-nav a:hover {
        color: var(--text-light);
        background: rgba(255, 255, 255, 0.04);
    }

    .desktop-nav a.active {
        color: var(--primary);
        background: rgba(0, 229, 184, 0.08);
        border-color: rgba(0, 229, 184, 0.18);
    }

    .desktop-nav a.active::after {
        content: "";
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        bottom: 4px;
        width: 16px;
        height: 2px;
        border-radius: 2px;
        background: var(--primary);
        box-shadow: 0 0 8px rgba(0, 229, 184, 0.6);
    }

    .header-cta {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .btn-brand {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: linear-gradient(135deg, var(--primary), #3ddba8);
        color: #04120e;
        font-weight: 700;
        font-size: 0.95rem;
        padding: 12px 26px;
        border-radius: var(--radius-pill);
        border: none;
        box-shadow: 0 8px 28px rgba(0, 229, 184, 0.28);
        transition: all var(--transition);
        white-space: nowrap;
    }

    .btn-lg-custom {
        padding: 13px 32px;
        font-size: 1rem;
    }

    .btn-brand:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 36px rgba(0, 229, 184, 0.36);
        color: #04120e;
    }

    .btn-brand:active {
        transform: translateY(0);
        box-shadow: 0 6px 16px rgba(0, 229, 184, 0.3);
    }

    .btn-ghost {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: var(--text-light);
        border: 1px solid var(--border-strong);
        padding: 12px 28px;
        border-radius: var(--radius-pill);
        font-weight: 600;
        transition: all var(--transition);
    }

    .btn-ghost:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: rgba(0, 229, 184, 0.05);
    }

    /* ========== 页面 Hero ========== */
    .page-hero {
        position: relative;
        padding: calc(var(--nav-height) + 88px) 0 84px;
        background-size: cover;
        background-position: center;
        overflow: hidden;
        isolation: isolate;
    }

    .page-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(6, 10, 18, 0.96) 20%, rgba(8, 14, 24, 0.82) 55%, rgba(6, 10, 18, 0.72));
        z-index: -1;
    }

    .page-hero::after {
        content: "";
        position: absolute;
        width: 520px;
        height: 520px;
        background: radial-gradient(circle, rgba(0, 229, 184, 0.18), transparent 70%);
        right: -120px;
        top: -120px;
        z-index: -1;
        border-radius: 50%;
        filter: blur(40px);
    }

    .page-hero .container {
        position: relative;
        z-index: 2;
    }

    .hero-breadcrumb {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--border);
        border-radius: var(--radius-pill);
        padding: 7px 18px;
        font-size: 0.82rem;
        color: var(--text-dim);
        margin-bottom: 24px;
        backdrop-filter: blur(8px);
    }

    .hero-breadcrumb i {
        color: var(--primary);
        font-size: 0.7rem;
    }

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

    .page-hero h1 {
        font-size: clamp(2.3rem, 5vw, 3.8rem);
        font-weight: 800;
        line-height: 1.15;
        letter-spacing: -0.03em;
        color: var(--text-light);
        margin-bottom: 20px;
        max-width: 780px;
        text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    }

    .page-hero h1 span {
        background: linear-gradient(135deg, var(--primary), #7bf5d8);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .page-hero .lead {
        font-size: 1.12rem;
        line-height: 1.85;
        color: var(--text-dim);
        max-width: 640px;
        margin-bottom: 34px;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        align-items: center;
    }

    .hero-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 12px 28px;
        margin-top: 44px;
        color: var(--text-dim);
        font-size: 0.9rem;
    }

    .hero-meta i {
        color: var(--primary);
        margin-right: 6px;
    }

    /* ========== 通用板块 ========== */
    .section-block {
        padding: var(--section-pad) 0;
        position: relative;
    }

    .section-block.bg-alt {
        background: var(--bg-section);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .section-block.bg-gradient {
        background: linear-gradient(180deg, var(--bg-body), var(--bg-section));
    }

    .section-head {
        text-align: center;
        max-width: 680px;
        margin: 0 auto 56px;
    }

    .section-head .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(0, 229, 184, 0.08);
        border: 1px solid rgba(0, 229, 184, 0.16);
        color: var(--primary);
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.06em;
        padding: 6px 18px;
        border-radius: var(--radius-pill);
        margin-bottom: 18px;
        text-transform: uppercase;
    }

    .section-head h2 {
        font-size: clamp(1.9rem, 3vw, 2.6rem);
        font-weight: 800;
        color: var(--text-light);
        letter-spacing: -0.02em;
        line-height: 1.3;
        margin-bottom: 16px;
    }

    .section-head p {
        color: var(--text-dim);
        font-size: 1.02rem;
    }

    .section-head.light h2 {
        color: var(--text-light);
    }

    .section-head.light p {
        color: var(--text-dim);
    }

    /* ========== 数据统计 ========== */
    .stat-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .stat-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 32px 28px;
        text-align: center;
        transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        position: relative;
        overflow: hidden;
    }

    .stat-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--primary), var(--secondary));
        opacity: 0;
        transition: opacity var(--transition);
    }

    .stat-card:hover {
        transform: translateY(-6px);
        border-color: rgba(0, 229, 184, 0.25);
        box-shadow: var(--shadow);
    }

    .stat-card:hover::before {
        opacity: 1;
    }

    .stat-icon {
        width: 62px;
        height: 62px;
        margin: 0 auto 18px;
        background: linear-gradient(135deg, rgba(0, 229, 184, 0.12), rgba(123, 97, 255, 0.12));
        border-radius: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        color: var(--primary);
    }

    .stat-card .number {
        font-size: 2.4rem;
        font-weight: 800;
        color: var(--text-light);
        line-height: 1.2;
        letter-spacing: -0.03em;
        margin-bottom: 6px;
    }

    .stat-card .number mark {
        background: none;
        color: var(--primary);
    }

    .stat-card .label {
        color: var(--text-dim);
        font-size: 0.92rem;
    }

    /* ========== 核心功能卡片 ========== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }

    .feature-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        overflow: hidden;
        transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        display: flex;
        flex-direction: column;
    }

    .feature-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-lg);
        border-color: rgba(0, 229, 184, 0.28);
    }

    .feature-card .feature-media {
        position: relative;
        aspect-ratio: 16 / 10;
        overflow: hidden;
    }

    .feature-card .feature-media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .feature-card:hover .feature-media img {
        transform: scale(1.06);
    }

    .feature-card .feature-media::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 40%, rgba(8, 14, 24, 0.68));
    }

    .feature-media .media-badge {
        position: absolute;
        top: 18px;
        left: 18px;
        z-index: 2;
        background: rgba(6, 10, 18, 0.75);
        border: 1px solid rgba(255, 255, 255, 0.15);
        backdrop-filter: blur(10px);
        color: var(--text-light);
        font-size: 0.78rem;
        font-weight: 600;
        padding: 5px 14px;
        border-radius: var(--radius-pill);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .media-badge i {
        color: var(--primary);
        font-size: 0.7rem;
    }

    .feature-body {
        padding: 28px 28px 30px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .feature-body h3 {
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--text-light);
        margin-bottom: 12px;
        line-height: 1.4;
    }

    .feature-body p {
        color: var(--text-dim);
        font-size: 0.94rem;
        line-height: 1.8;
        margin-bottom: 18px;
        flex: 1;
    }

    .feature-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 20px;
    }

    .feature-tags .tag {
        display: inline-block;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--border);
        color: var(--text-dim);
        font-size: 0.78rem;
        padding: 4px 12px;
        border-radius: var(--radius-pill);
        transition: border-color var(--transition), color var(--transition);
    }

    .feature-tags .tag:hover {
        border-color: rgba(0, 229, 184, 0.3);
        color: var(--primary);
    }

    .feature-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--primary);
        font-weight: 600;
        font-size: 0.92rem;
        transition: gap var(--transition);
    }

    .feature-link:hover {
        gap: 12px;
        color: var(--primary-dark);
    }

    /* ========== 使用流程 ========== */
    .process-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 28px;
        counter-reset: process-counter;
    }

    .process-step {
        position: relative;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 40px 28px 30px;
        text-align: center;
        transition: all var(--transition);
    }

    .process-step:hover {
        transform: translateY(-6px);
        border-color: rgba(0, 229, 184, 0.22);
        box-shadow: var(--shadow);
    }

    .process-step .step-num {
        position: absolute;
        top: -16px;
        left: 50%;
        transform: translateX(-50%);
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--primary), #3ddba8);
        border-radius: 50%;
        color: #04120e;
        font-weight: 800;
        font-size: 0.95rem;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 6px 18px rgba(0, 229, 184, 0.35);
    }

    .process-step .step-icon {
        width: 68px;
        height: 68px;
        margin: 0 auto 20px;
        background: rgba(0, 229, 184, 0.08);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        color: var(--primary);
        border: 1px solid rgba(0, 229, 184, 0.12);
    }

    .process-step h4 {
        color: var(--text-light);
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 10px;
    }

    .process-step p {
        color: var(--text-dim);
        font-size: 0.88rem;
        line-height: 1.7;
        margin-bottom: 0;
    }

    .process-step::after {
        content: "\f105";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        position: absolute;
        right: -22px;
        top: 50%;
        transform: translateY(-50%);
        color: rgba(255, 255, 255, 0.18);
        font-size: 1.3rem;
        z-index: 2;
    }

    .process-step:last-child::after {
        display: none;
    }

    /* ========== 图文对比 ========== */
    .split-block {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }

    .split-media {
        position: relative;
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--border);
    }

    .split-media img {
        width: 100%;
        aspect-ratio: 4 / 3;
        object-fit: cover;
    }

    .split-media .play-glow {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 110px;
        height: 110px;
        background: var(--primary);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2rem;
        color: #04120e;
        cursor: pointer;
        transition: all var(--transition);
        box-shadow: 0 0 0 0 rgba(0, 229, 184, 0.4);
        animation: pulse-glow 2.5s infinite;
    }

    .split-media .play-glow i {
        margin-left: 4px;
    }

    @keyframes pulse-glow {
        0% {
            box-shadow: 0 0 0 0 rgba(0, 229, 184, 0.4);
        }
        70% {
            box-shadow: 0 0 0 28px rgba(0, 229, 184, 0);
        }
        100% {
            box-shadow: 0 0 0 0 rgba(0, 229, 184, 0);
        }
    }

    .split-media .media-caption {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 40px 28px 22px;
        background: linear-gradient(180deg, transparent, rgba(6, 10, 18, 0.88));
        color: var(--text-light);
        font-size: 0.86rem;
    }

    .split-content h2 {
        font-size: 2rem;
        font-weight: 800;
        color: var(--text-light);
        line-height: 1.35;
        letter-spacing: -0.02em;
        margin-bottom: 20px;
    }

    .split-content h2 span {
        color: var(--primary);
    }

    .split-content > p {
        color: var(--text-dim);
        font-size: 1rem;
        line-height: 1.9;
        margin-bottom: 28px;
    }

    .check-list {
        list-style: none;
        margin: 0 0 32px;
        padding: 0;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px 20px;
    }

    .check-list li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        color: var(--text-body);
        font-size: 0.93rem;
    }

    .check-list li i {
        color: var(--primary);
        font-size: 0.9rem;
        margin-top: 5px;
        width: 18px;
        height: 18px;
        border-radius: 50%;
        background: rgba(0, 229, 184, 0.1);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    /* ========== FAQ 手风琴 ========== */
    .faq-wrap {
        max-width: 820px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        margin-bottom: 16px;
        overflow: hidden;
        transition: border-color var(--transition), box-shadow var(--transition);
    }

    .faq-item:hover {
        border-color: rgba(0, 229, 184, 0.22);
    }

    .faq-item.active {
        border-color: rgba(0, 229, 184, 0.3);
        box-shadow: var(--shadow-sm);
    }

    .faq-btn {
        width: 100%;
        background: none;
        border: none;
        padding: 24px 28px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        color: var(--text-light);
        font-size: 1rem;
        font-weight: 600;
        text-align: left;
        cursor: pointer;
        transition: color var(--transition);
    }

    .faq-btn:hover {
        color: var(--primary);
    }

    .faq-btn .faq-icon {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        background: rgba(0, 229, 184, 0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.85rem;
        color: var(--primary);
        flex-shrink: 0;
        transition: transform var(--transition), background var(--transition);
    }

    .faq-item.active .faq-icon {
        transform: rotate(135deg);
        background: var(--primary);
        color: #04120e;
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .faq-answer-inner {
        padding: 0 28px 26px;
        color: var(--text-dim);
        font-size: 0.94rem;
        line-height: 1.85;
    }

    .faq-answer-inner strong {
        color: var(--text-light);
    }

    /* ========== CTA 区块 ========== */
    .cta-section {
        position: relative;
        padding: 100px 0;
        overflow: hidden;
    }

    .cta-box {
        position: relative;
        border-radius: 32px;
        padding: 68px 56px;
        background: linear-gradient(135deg, rgba(0, 229, 184, 0.14), rgba(123, 97, 255, 0.12)),
            linear-gradient(180deg, var(--bg-card-2), var(--bg-card));
        border: 1px solid rgba(0, 229, 184, 0.18);
        text-align: center;
        overflow: hidden;
        box-shadow: var(--shadow-lg);
    }

    .cta-box::before {
        content: "";
        position: absolute;
        width: 420px;
        height: 420px;
        background: radial-gradient(circle, rgba(0, 229, 184, 0.2), transparent 70%);
        left: -140px;
        top: -140px;
        border-radius: 50%;
        filter: blur(30px);
    }

    .cta-box::after {
        content: "";
        position: absolute;
        width: 380px;
        height: 380px;
        background: radial-gradient(circle, rgba(123, 97, 255, 0.18), transparent 70%);
        right: -120px;
        bottom: -120px;
        border-radius: 50%;
        filter: blur(30px);
    }

    .cta-box > * {
        position: relative;
        z-index: 2;
    }

    .cta-box h2 {
        font-size: clamp(1.8rem, 3vw, 2.5rem);
        font-weight: 800;
        color: var(--text-light);
        margin-bottom: 16px;
        letter-spacing: -0.02em;
    }

    .cta-box p {
        color: var(--text-dim);
        font-size: 1.05rem;
        max-width: 560px;
        margin: 0 auto 32px;
    }

    .cta-box .cta-actions {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .cta-box .btn-brand {
        padding: 15px 38px;
        font-size: 1rem;
    }

    .cta-box .btn-ghost {
        padding: 15px 38px;
    }

    .cta-note {
        display: block;
        margin-top: 20px;
        color: var(--text-faint);
        font-size: 0.82rem;
    }

    /* ========== 页脚 ========== */
    .site-footer {
        background: var(--bg-deep);
        border-top: 1px solid var(--border);
        padding: 72px 0 0;
        position: relative;
    }

    .footer-logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 1.3rem;
        font-weight: 800;
        color: var(--text-light);
        margin-bottom: 18px;
    }

    .footer-logo i {
        color: var(--primary);
        font-size: 1.4rem;
    }

    .footer-desc {
        color: var(--text-dim);
        font-size: 0.9rem;
        line-height: 1.8;
        max-width: 320px;
        margin-bottom: 0;
    }

    .footer-links h4 {
        color: var(--text-light);
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 20px;
        letter-spacing: 0.02em;
    }

    .footer-links a {
        display: flex;
        align-items: center;
        color: var(--text-dim);
        font-size: 0.9rem;
        margin-bottom: 12px;
        transition: padding-left var(--transition), color var(--transition);
    }

    .footer-links a:hover {
        color: var(--primary);
        padding-left: 4px;
    }

    .footer-links a i {
        font-size: 0.78rem;
        color: var(--text-faint);
        transition: color var(--transition);
    }

    .footer-links a:hover i {
        color: var(--primary);
    }

    .footer-bottom {
        margin-top: 52px;
        border-top: 1px solid var(--border);
        padding: 24px 0 32px;
        text-align: center;
        color: var(--text-faint);
        font-size: 0.82rem;
    }

    .footer-bottom p {
        margin-bottom: 4px;
    }

    /* ========== 移动端底部 Tab ========== */
    .mobile-bottom-nav {
        display: none;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1050;
        background: rgba(6, 10, 18, 0.96);
        backdrop-filter: blur(20px);
        border-top: 1px solid var(--border);
        padding-bottom: env(safe-area-inset-bottom);
        box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.4);
    }

    .mobile-bottom-nav .mobile-tab {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 10px 4px 8px;
        color: var(--text-dim);
        font-size: 0.68rem;
        gap: 4px;
        min-height: 58px;
        border-radius: 12px;
        transition: color var(--transition), transform var(--transition);
    }

    .mobile-bottom-nav .mobile-tab i {
        font-size: 1.15rem;
        line-height: 1;
    }

    .mobile-bottom-nav .mobile-tab.active {
        color: var(--primary);
    }

    .mobile-bottom-nav .mobile-tab.active i {
        filter: drop-shadow(0 0 8px rgba(0, 229, 184, 0.5));
    }

    .mobile-bottom-nav .mobile-tab:active {
        transform: scale(0.94);
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1199.98px) {
        :root {
            --section-pad: 84px;
        }

        .feature-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .stat-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .process-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .process-step::after {
            display: none;
        }
    }

    @media (max-width: 991.98px) {
        :root {
            --section-pad: 72px;
            --nav-height: 68px;
        }

        .desktop-nav {
            display: none;
        }

        .header-cta .btn-lg-custom {
            display: none;
        }

        .header-cta {
            margin-left: auto;
        }

        .site-header .header-inner .logo {
            font-size: 1.08rem;
        }

        .logo-badge {
            display: block;
            font-size: 0.6rem;
            padding: 1px 8px;
        }

        .split-block {
            grid-template-columns: 1fr;
            gap: 40px;
        }

        .split-media {
            max-width: 100%;
        }

        .check-list {
            grid-template-columns: 1fr;
        }

        .cta-box {
            padding: 50px 28px;
        }

        .mobile-bottom-nav {
            display: flex;
        }

        .page-hero {
            padding: calc(var(--nav-height) + 56px) 0 60px;
        }

        body {
            padding-bottom: 64px;
        }

        /* 移动端 header-cta 保留一个入口 */
        .header-cta .btn-brand {
            padding: 9px 20px;
            font-size: 0.85rem;
        }
    }

    @media (max-width: 767.98px) {
        :root {
            --section-pad: 60px;
        }

        .container {
            padding-left: 20px;
            padding-right: 20px;
        }

        .page-hero h1 {
            font-size: 2rem;
        }

        .page-hero .lead {
            font-size: 0.98rem;
        }

        .hero-actions {
            flex-direction: column;
            align-items: flex-start;
        }

        .hero-actions .btn-brand,
        .hero-actions .btn-ghost {
            width: 100%;
            justify-content: center;
        }

        .stat-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .stat-card {
            padding: 22px 14px;
        }

        .stat-card .number {
            font-size: 1.6rem;
        }

        .stat-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }

        .feature-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .process-grid {
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

        .process-step {
            padding: 34px 16px 22px;
        }

        .process-step .step-icon {
            width: 52px;
            height: 52px;
            font-size: 1.2rem;
        }

        .process-step p {
            font-size: 0.8rem;
        }

        .section-head {
            margin-bottom: 40px;
        }

        .section-head h2 {
            font-size: 1.7rem;
        }

        .cta-box {
            padding: 42px 20px;
            border-radius: 22px;
        }

        .cta-box .cta-actions {
            flex-direction: column;
        }

        .cta-box .cta-actions .btn-brand,
        .cta-box .cta-actions .btn-ghost {
            width: 100%;
            justify-content: center;
        }

        .faq-btn {
            padding: 19px 20px;
            font-size: 0.92rem;
        }

        .faq-answer-inner {
            padding: 0 20px 20px;
        }

        .footer-links {
            margin-bottom: 8px;
        }

        .footer-bottom {
            margin-top: 36px;
            padding: 20px 0 24px;
        }

        .footer-bottom {
            padding-bottom: 44px;
        }
    }

    @media (max-width: 520px) {
        .page-hero {
            padding: calc(var(--nav-height) + 44px) 0 48px;
        }

        .page-hero h1 {
            font-size: 1.72rem;
        }

        .hero-meta {
            gap: 10px 20px;
            font-size: 0.82rem;
        }

        .section-head h2 {
            font-size: 1.5rem;
        }

        .section-head p {
            font-size: 0.92rem;
        }

        .stat-grid {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .stat-card {
            border-radius: 14px;
            padding: 20px 10px;
        }

        .stat-card .number {
            font-size: 1.4rem;
        }

        .stat-card .label {
            font-size: 0.78rem;
        }

        .process-grid {
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .process-step {
            padding: 28px 12px 18px;
        }

        .process-step h4 {
            font-size: 0.92rem;
        }

        .process-step .step-icon {
            width: 44px;
            height: 44px;
            font-size: 1.05rem;
            margin-bottom: 14px;
        }

        .feature-body {
            padding: 22px 20px 24px;
        }

        .feature-body h3 {
            font-size: 1.1rem;
        }

        .feature-body p {
            font-size: 0.88rem;
        }

        .feature-tags .tag {
            font-size: 0.72rem;
            padding: 3px 10px;
        }

        .split-content h2 {
            font-size: 1.6rem;
        }

        .split-content > p {
            font-size: 0.92rem;
        }

        .check-list li {
            font-size: 0.88rem;
        }

        .cta-box h2 {
            font-size: 1.5rem;
        }

        .cta-box p {
            font-size: 0.9rem;
        }

        .footer-logo {
            font-size: 1.05rem;
        }
    }

    @media (max-width: 360px) {
        .process-grid {
            grid-template-columns: 1fr;
        }

        .stat-grid {
            grid-template-columns: 1fr;
        }

        .stat-card {
            padding: 18px 16px;
        }

        .hero-meta {
            flex-direction: column;
        }

        .logo {
            font-size: 1rem;
        }

        .logo i {
            font-size: 1.3rem;
        }
    }

    @media (min-width: 992px) {
        .mobile-bottom-nav {
            display: none;
        }

        body {
            padding-bottom: 0;
        }
    }

/* roulang page: category3 */
/* ===== Design Variables ===== */
:root {
  --primary: #7c5cfc;
  --primary-dark: #5a3fd6;
  --primary-light: #a78bfa;
  --accent: #22d3ee;
  --accent-2: #f472b6;
  --bg-dark: #0a0e1a;
  --bg-deep: #060912;
  --bg-card: #111827;
  --bg-card-2: #1a2234;
  --bg-soft: #151d2e;
  --text-main: #e5e7eb;
  --text-light: #9ca3af;
  --text-muted: #6b7280;
  --border: #1f2b3d;
  --border-light: #2a3850;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.25);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-brand: linear-gradient(135deg, #7c5cfc 0%, #22d3ee 100%);
  --gradient-dark: linear-gradient(180deg, #0a0e1a 0%, #060912 100%);
}

/* ===== Reset & Base ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}
ul, ol {
  list-style: none;
}

/* ===== Container ===== */
.container-custom {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: #ffffff;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1.06rem;
  color: var(--text-light);
  max-width: 720px;
  margin: 0 auto 48px;
  line-height: 1.8;
}
.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Header ===== */
.site-header {
  background: rgba(10, 14, 26, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 12px 0;
  transition: box-shadow var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.logo i {
  font-size: 1.6rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.logo-badge {
  display: inline-block;
  background: rgba(124, 92, 252, 0.2);
  color: var(--primary-light);
  border: 1px solid rgba(124, 92, 252, 0.35);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: 0.05em;
  margin-left: 4px;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.desktop-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-light);
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition);
}
.desktop-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transition: width var(--transition);
}
.desktop-nav a:hover {
  color: #ffffff;
}
.desktop-nav a:hover::after {
  width: 100%;
}
.desktop-nav a.active {
  color: #ffffff;
}
.desktop-nav a.active::after {
  width: 100%;
}
.header-cta {
  display: flex;
  align-items: center;
}
.btn-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-brand);
  color: #ffffff !important;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 24px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(124, 92, 252, 0.3);
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-brand:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 32px rgba(124, 92, 252, 0.45);
}
.btn-lg-custom {
  padding: 12px 30px;
  font-size: 0.94rem;
}

/* ===== Mobile Header ===== */
.mobile-actions {
  display: none;
  align-items: center;
  gap: 12px;
}

/* ===== Mobile Bottom Tab Bar ===== */
.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  z-index: 1005;
  padding: 8px 0;
  justify-content: space-around;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
}
.mobile-tabbar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--text-muted);
  padding: 4px 8px;
  border-radius: 12px;
  transition: color var(--transition);
}
.mobile-tabbar a i {
  font-size: 1.2rem;
}
.mobile-tabbar a.active {
  color: var(--primary-light);
}
.mobile-tabbar a.active i {
  text-shadow: 0 0 16px rgba(124, 92, 252, 0.6);
}

/* ===== Hero / Page Banner ===== */
.page-hero {
  position: relative;
  padding: 90px 0 72px;
  background: linear-gradient(135deg, rgba(10, 14, 26, 0.92) 0%, rgba(6, 9, 18, 0.85) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124, 92, 252, 0.2) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-inner {
  text-align: center;
  position: relative;
  z-index: 2;
}
.page-hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.page-hero p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-light);
  border-radius: 50px;
  padding: 8px 18px;
  font-size: 0.85rem;
  color: var(--text-light);
  backdrop-filter: blur(10px);
}
.hero-badge i {
  color: var(--primary-light);
}

/* ===== Section Common ===== */
.section-padding {
  padding: 88px 0;
}
.section-alt {
  background: var(--bg-deep);
}
.section-title-center {
  text-align: center;
}
.section-title-left {
  text-align: left;
}

/* ===== Category Cards ===== */
.cat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  height: 100%;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.cat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity var(--transition);
}
.cat-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.cat-card:hover::before {
  opacity: 1;
}
.cat-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(124, 92, 252, 0.2), rgba(34, 211, 238, 0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary-light);
  margin-bottom: 20px;
}
.cat-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  font-weight: 700;
}
.cat-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}
.cat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary-light);
  transition: gap var(--transition);
}
.cat-link:hover {
  gap: 12px;
  color: var(--accent);
}

/* ===== FAQ Accordion ===== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover {
  border-color: var(--border-light);
}
.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--text-main);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: background var(--transition);
}
.faq-question:hover {
  background: rgba(124, 92, 252, 0.06);
}
.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(124, 92, 252, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 0.75rem;
  transition: transform var(--transition), background var(--transition);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-light);
  font-size: 0.92rem;
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ===== Guide Cards w/ Cover Image ===== */
.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.guide-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.guide-cover {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.guide-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.guide-card:hover .guide-cover img {
  transform: scale(1.05);
}
.guide-cover::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(transparent, rgba(17, 24, 39, 0.9));
}
.guide-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.04em;
}
.guide-body {
  padding: 20px;
}
.guide-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.guide-body p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 14px;
}
.guide-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.guide-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.guide-meta i {
  color: var(--primary-light);
}

/* ===== Stats ===== */
.stats-section {
  background: linear-gradient(135deg, rgba(10, 14, 26, 0.95), rgba(6, 9, 18, 0.98)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding: 72px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-item {
  text-align: center;
  padding: 24px;
}
.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: 6px;
}

/* ===== Steps / Process ===== */
.step-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 32px;
}
.step-item::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 48px;
  width: 2px;
  height: calc(100% - 20px);
  background: linear-gradient(180deg, var(--primary), transparent);
  opacity: 0.3;
}
.step-item:last-child::before {
  display: none;
}
.step-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 16px rgba(124, 92, 252, 0.4);
}
.step-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-item p {
  color: var(--text-light);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
  position: relative;
  background: linear-gradient(135deg, #7c5cfc, #22d3ee);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}
.cta-inner {
  text-align: center;
  position: relative;
  z-index: 2;
}
.cta-inner h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.85);
  margin: 0 auto 32px;
  max-width: 520px;
  font-size: 1.05rem;
}
.btn-white {
  background: #ffffff;
  color: #0a0e1a !important;
  font-weight: 700;
  padding: 14px 40px;
  border-radius: 50px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 72px 0 32px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-logo i {
  font-size: 1.6rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.footer-desc {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.88rem;
  line-height: 1.8;
  max-width: 320px;
}
.footer-links h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-links a {
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
  margin-bottom: 10px;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 26px;
  margin-top: 50px;
  text-align: center;
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.82rem;
}

/* ===== Bottom spacing for mobile tab bar ===== */
body {
  padding-bottom: 0;
}
@media (max-width: 767.98px) {
  body {
    padding-bottom: 64px;
  }
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .desktop-nav {
    display: none;
  }
  .header-cta {
    display: none;
  }
  .mobile-actions {
    display: flex;
  }
  .mobile-toggle {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
  }
  .mobile-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
  }
  .mobile-tabbar {
    display: flex;
  }
  .mobile-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    z-index: 999;
    display: none;
    flex-direction: column;
    gap: 4px;
  }
  .mobile-menu.open {
    display: flex;
  }
  .mobile-menu a {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
    transition: background var(--transition), color var(--transition);
  }
  .mobile-menu a:hover {
    background: rgba(124, 92, 252, 0.1);
    color: #fff;
  }
  .mobile-menu a.active {
    background: rgba(124, 92, 252, 0.15);
    color: var(--primary-light);
  }
}
@media (max-width: 767.98px) {
  .section-padding {
    padding: 56px 0;
  }
  .page-hero {
    padding: 56px 0 48px;
  }
  .page-hero h1 {
    font-size: 1.9rem;
  }
  .page-hero p {
    font-size: 0.95rem;
  }
  .hero-badge {
    font-size: 0.75rem;
    padding: 6px 14px;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .section-subtitle {
    font-size: 0.92rem;
    margin-bottom: 32px;
  }
  .stat-number {
    font-size: 2rem;
  }
  .cat-card {
    padding: 20px;
  }
  .guide-cover {
    height: 150px;
  }
  .footer-links h4 {
    margin-bottom: 14px;
  }
  .cta-section {
    padding: 48px 0;
  }
  .btn-white {
    padding: 12px 28px;
    font-size: 0.92rem;
  }
}
@media (max-width: 520px) {
  .container-custom {
    padding: 0 16px;
  }
  .page-hero h1 {
    font-size: 1.65rem;
  }
  .section-title {
    font-size: 1.4rem;
  }
  .cat-icon {
    width: 46px;
    height: 46px;
    font-size: 1.2rem;
  }
  .faq-question {
    padding: 16px 18px;
    font-size: 0.9rem;
  }
  .faq-answer-inner {
    padding: 0 18px 16px;
  }
  .stat-number {
    font-size: 1.7rem;
  }
  .step-item {
    padding-left: 48px;
  }
  .step-num {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }
}

/* ===== Focus ===== */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
a:active {
  transform: scale(0.98);
}

/* roulang page: category2 */
:root {
            --primary: #0a1628;
            --primary-light: #132743;
            --accent: #f5b942;
            --accent-light: #ffd166;
            --accent-dark: #d99e2b;
            --card-bg: rgba(255, 255, 255, 0.045);
            --card-border: rgba(255, 255, 255, 0.09);
            --text-main: #e9edf2;
            --text-weak: #8b9bb4;
            --text-mute: #5b6b84;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 14px 44px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-main);
            background: linear-gradient(135deg, #060d18 0%, #0b182b 50%, #081626 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(8, 15, 28, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0.9rem 0;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent);
            font-size: 1.45rem;
            filter: drop-shadow(0 0 10px rgba(245, 185, 66, 0.4));
        }

        .logo-badge {
            background: linear-gradient(120deg, var(--accent), var(--accent-light));
            color: #0a1628;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.12rem 0.52rem;
            border-radius: 30px;
            letter-spacing: 0.05em;
            margin-left: 0.15rem;
        }

        .desktop-nav {
            display: flex;
            gap: 2.2rem;
            margin: 0;
        }

        .desktop-nav a {
            position: relative;
            color: var(--text-weak);
            font-size: 0.96rem;
            font-weight: 500;
            padding: 0.3rem 0;
        }

        .desktop-nav a:hover {
            color: var(--text-main);
        }

        .desktop-nav a.active {
            color: var(--text-main);
        }

        .desktop-nav a.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            box-shadow: 0 0 12px rgba(245, 185, 66, 0.5);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 1rem;
        }

        .btn-brand {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(120deg, var(--accent), var(--accent-light));
            color: #0a1628;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 0.55rem 1.35rem;
            border-radius: 60px;
            border: none;
            box-shadow: 0 6px 24px rgba(245, 185, 66, 0.3);
            transition: var(--transition);
        }

        .btn-brand:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(245, 185, 66, 0.45);
            color: #0a1628;
        }

        .btn-brand:focus,
        .btn-brand:active {
            outline: 2px solid var(--accent-light);
            outline-offset: 3px;
            transform: translateY(0);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 5.5rem 0 4.5rem;
            background-image: linear-gradient(90deg, rgba(6, 13, 24, 0.88) 0%, rgba(10, 22, 40, 0.72) 55%, rgba(8, 22, 38, 0.5) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, #060d18 0%, transparent 100%);
            pointer-events: none;
        }

        .breadcrumb-bar {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 1.2rem;
        }

        .breadcrumb-bar a {
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

        .breadcrumb-bar a:hover {
            color: var(--accent);
        }

        .breadcrumb-bar i {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.25);
        }

        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin: 0 0 1.1rem;
            background: linear-gradient(120deg, #ffffff, #cfd9e6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-hero p.lead {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.62);
            max-width: 680px;
            margin-bottom: 1.6rem;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.65rem;
        }

        .hero-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.82rem;
            padding: 0.4rem 1rem;
            border-radius: 40px;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .hero-tags .tag:hover {
            border-color: var(--accent);
            color: var(--accent-light);
        }

        .hero-tags .tag i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        /* ===== Section common ===== */
        .section-padding {
            padding: 5rem 0;
        }

        .section-sm-padding {
            padding: 3.5rem 0;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 3rem;
        }

        .section-tag {
            display: inline-block;
            background: rgba(245, 185, 66, 0.12);
            border: 1px solid rgba(245, 185, 66, 0.25);
            color: var(--accent-light);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.3rem 1.1rem;
            border-radius: 40px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }

        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.01em;
            line-height: 1.35;
            margin-bottom: 0.6rem;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 1rem;
            margin-bottom: 0;
        }

        /* ===== Stats ===== */
        .stats-section {
            position: relative;
            margin-top: -2.5rem;
            z-index: 2;
            padding-bottom: 3rem;
        }

        .stat-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 1.7rem 1.5rem;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: rgba(245, 185, 66, 0.3);
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(120deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            margin-bottom: 0.2rem;
        }

        .stat-label {
            font-size: 0.88rem;
            color: var(--text-weak);
        }

        /* ===== Steps ===== */
        .steps-section {
            padding: 4.5rem 0 5rem;
        }

        .step-card {
            position: relative;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 2.1rem 1.6rem 1.7rem;
            height: 100%;
            transition: var(--transition);
            overflow: hidden;
        }

        .step-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0;
            transition: var(--transition);
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(245, 185, 66, 0.2);
        }

        .step-card:hover::before {
            opacity: 1;
        }

        .step-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #0a1628;
            font-size: 1.25rem;
            font-weight: 800;
            border-radius: 14px;
            margin-bottom: 1.2rem;
            box-shadow: 0 6px 20px rgba(245, 185, 66, 0.3);
        }

        .step-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.6rem;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-bottom: 0;
        }

        /* ===== Verify Methods ===== */
        .verify-section {
            padding: 5rem 0;
            background: rgba(255, 255, 255, 0.025);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .verify-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 1.7rem 1.5rem;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }

        .verify-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: rgba(245, 185, 66, 0.22);
        }

        .verify-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, rgba(245, 185, 66, 0.18), rgba(245, 185, 66, 0.06));
            border: 1px solid rgba(245, 185, 66, 0.2);
            border-radius: 14px;
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }

        .verify-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.5rem;
        }

        .verify-card p {
            font-size: 0.87rem;
            color: var(--text-weak);
            margin-bottom: 0.75rem;
        }

        .verify-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.72rem;
            padding: 0.18rem 0.7rem;
            border-radius: 30px;
        }

        /* ===== Tips ===== */
        .tips-section {
            padding: 5rem 0;
        }

        .tips-media {
            position: relative;
            border-radius: 22px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
        }

        .tips-media img {
            width: 100%;
            object-fit: cover;
            min-height: 350px;
            transition: transform 0.5s ease;
        }

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

        .tips-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(6, 13, 24, 0.55), transparent 60%);
        }

        .tips-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1.2rem;
            line-height: 1.35;
        }

        .tips-content > p {
            color: var(--text-weak);
            margin-bottom: 1.5rem;
            font-size: 0.98rem;
        }

        .tips-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .tips-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 0.85rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.78);
            transition: var(--transition);
        }

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

        .tips-list li:hover {
            color: var(--text-main);
            padding-left: 0.3rem;
        }

        .tips-list li i {
            color: var(--accent);
            margin-top: 0.25rem;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 5rem 0;
            background: rgba(255, 255, 255, 0.022);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .custom-accordion .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .custom-accordion .accordion-item:not(.collapsed) {
            border-color: rgba(245, 185, 66, 0.25);
        }

        .custom-accordion .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            padding: 1.2rem 1.5rem;
            box-shadow: none;
            border: none;
            transition: var(--transition);
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--accent-light);
        }

        .custom-accordion .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(245, 185, 66, 0.2);
        }

        .custom-accordion .accordion-button::after {
            filter: brightness(0.8);
        }

        .custom-accordion .accordion-body {
            padding: 0.2rem 1.5rem 1.3rem;
            color: var(--text-weak);
            font-size: 0.92rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 5.5rem 0;
        }

        .cta-box {
            position: relative;
            background: linear-gradient(135deg, rgba(245, 185, 66, 0.12), rgba(245, 185, 66, 0.03));
            border: 1px solid rgba(245, 185, 66, 0.2);
            border-radius: 24px;
            padding: 3.5rem 2.5rem;
            text-align: center;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(245, 185, 66, 0.2), transparent 70%);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 0.8rem;
        }

        .cta-box p {
            color: var(--text-weak);
            font-size: 1rem;
            margin-bottom: 1.8rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
            font-weight: 600;
            padding: 0.6rem 1.6rem;
            border-radius: 60px;
            transition: var(--transition);
        }

        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent-light);
            background: rgba(245, 185, 66, 0.08);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #050b15;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 4.5rem 0 2.5rem;
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }

        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-logo i {
            color: var(--accent);
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .footer-links h4 {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            padding: 0.3rem 0;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 3rem;
            padding-top: 1.8rem;
            text-align: center;
        }

        .footer-bottom p {
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.82rem;
            margin: 0;
        }

        /* ===== Mobile Tab Nav ===== */
        .mobile-tab-nav {
            display: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .desktop-nav,
            .header-cta {
                display: none !important;
            }

            .mobile-tab-nav {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 1000;
                background: rgba(7, 14, 25, 0.95);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                border-top: 1px solid rgba(255, 255, 255, 0.07);
                padding: 0.35rem 0.5rem;
                justify-content: space-around;
            }

            body {
                padding-bottom: 64px;
            }

            .page-hero {
                padding: 4rem 0 3.5rem;
            }

            .page-hero h1 {
                font-size: 2.2rem;
            }

            .section-head h2 {
                font-size: 1.7rem;
            }

            .cta-box h2 {
                font-size: 1.5rem;
            }

            .tips-media img {
                min-height: 280px;
            }
        }

        .mobile-tab-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.2rem;
            padding: 0.5rem 0.4rem;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.7rem;
            border-radius: 12px;
            transition: var(--transition);
            min-width: 68px;
            text-align: center;
        }

        .mobile-tab-nav .tab-item i {
            font-size: 1.15rem;
            transition: var(--transition);
        }

        .mobile-tab-nav .tab-item.active {
            color: var(--accent-light);
        }

        .mobile-tab-nav .tab-item.active i {
            transform: translateY(-1px);
        }

        .mobile-tab-nav .tab-item:hover {
            color: var(--text-main);
        }

        .mobile-tab-nav .tab-item:focus {
            outline: 2px solid rgba(245, 185, 66, 0.4);
            outline-offset: 2px;
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 3.2rem 0 3rem;
            }

            .page-hero h1 {
                font-size: 1.9rem;
            }

            .page-hero p.lead {
                font-size: 0.98rem;
            }

            .section-head h2 {
                font-size: 1.5rem;
            }

            .stat-card {
                padding: 1.3rem 0.8rem;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .step-card,
            .verify-card {
                padding: 1.4rem;
            }

            .cta-box {
                padding: 2.5rem 1.4rem;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .btn-brand,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
            }

            .footer-links h4 {
                margin-top: 1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .logo {
                font-size: 1.12rem;
            }

            .logo i {
                font-size: 1.1rem;
            }

            .page-hero h1 {
                font-size: 1.7rem;
            }

            .section-tag {
                font-size: 0.7rem;
                padding: 0.25rem 0.9rem;
            }

            .tips-content h2 {
                font-size: 1.4rem;
            }

            .tips-list li {
                font-size: 0.88rem;
            }

            .mobile-tab-nav .tab-item {
                min-width: 56px;
                font-size: 0.65rem;
            }

            .mobile-tab-nav .tab-item i {
                font-size: 1.05rem;
            }
        }