/* roulang page: index */
:root {
            --primary: #00d4ff;
            --primary-dark: #0098bd;
            --secondary: #7b2ff7;
            --accent: #ff6b35;
            --accent-glow: rgba(255, 107, 53, 0.25);
            --bg-dark: #0a0e1a;
            --bg-deep: #060912;
            --bg-card: #131a2b;
            --bg-card-hover: #1a2237;
            --text-main: #e6edf3;
            --text-muted: #8b949e;
            --text-soft: #a7b3c4;
            --border-color: rgba(255, 255, 255, 0.07);
            --border-glow: rgba(0, 212, 255, 0.25);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45), 0 0 24px rgba(0, 212, 255, 0.08);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 76px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--header-height);
        }

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

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

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

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

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

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            position: relative;
        }

        .section {
            padding: 96px 0;
        }

        .section-sm {
            padding: 64px 0;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }

        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid var(--border-glow);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 18px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }

        .section-title .highlight {
            background: linear-gradient(120deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .btn {
            border-radius: 50px;
            padding: 12px 32px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: none;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
        }

        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.35);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-main);
        }

        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            transform: translateY(-3px);
        }

        .btn-lg {
            padding: 14px 40px;
            font-size: 16px;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(0, 212, 255, 0.5);
            outline-offset: 2px;
        }

        .badge-custom {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.12);
            color: var(--primary);
            border: 1px solid var(--border-glow);
        }

        .badge-accent {
            background: rgba(255, 107, 53, 0.12);
            color: var(--accent);
            border-color: rgba(255, 107, 53, 0.25);
        }

        .badge-secondary {
            background: rgba(123, 47, 247, 0.15);
            color: #a78bfa;
            border-color: rgba(123, 47, 247, 0.25);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            height: var(--header-height);
            background: rgba(10, 14, 26, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .site-header .container {
            height: 100%;
        }

        .header-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            height: 100%;
            gap: 24px;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 8px;
            justify-self: start;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            justify-self: end;
        }

        .nav-link-custom {
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-soft);
            border-radius: 50px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-link-custom:hover {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            border-color: rgba(0, 212, 255, 0.15);
        }

        .nav-link-custom.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.1);
            border-color: var(--border-glow);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            justify-self: center;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            font-size: 16px;
            color: #fff;
            box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-main);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 24px 24px;
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-soft);
            font-weight: 600;
            font-size: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .mobile-menu a:hover {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.06);
        }

        .mobile-menu a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.1);
            border-left: 3px solid var(--primary);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: calc(var(--header-height) + 48px);
            padding-bottom: 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 9, 18, 0.92) 0%, rgba(10, 14, 26, 0.75) 45%, rgba(6, 9, 18, 0.92) 100%);
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 1000px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(0, 212, 255, 0.1), transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.25);
            color: var(--primary);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 28px;
            backdrop-filter: blur(10px);
        }

        .hero-badge i {
            font-size: 14px;
        }

        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -1px;
            text-shadow: 0 2px 20px rgba(0, 212, 255, 0.15);
        }

        .hero-title .text-glow {
            background: linear-gradient(120deg, var(--primary), #7b5cff, var(--primary));
            background-size: 200% auto;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: shimmer 3s linear infinite;
        }

        @keyframes shimmer {
            0% {
                background-position: 0% center;
            }
            100% {
                background-position: -200% center;
            }
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-soft);
            line-height: 1.8;
            max-width: 680px;
            margin: 0 auto 36px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            padding: 24px 40px;
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(12px);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            max-width: 720px;
            margin: 0 auto;
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat .stat-num .plus {
            color: var(--primary);
        }

        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 特色板块 ===== */
        .features-section {
            background: var(--bg-dark);
        }

        .feature-card {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 36px 28px;
            height: 100%;
            transition: var(--transition);
            overflow: hidden;
        }

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

        .feature-card:hover {
            transform: translateY(-6px);
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-hover);
        }

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

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 22px;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(123, 47, 247, 0.15));
            color: var(--primary);
            border: 1px solid var(--border-glow);
        }

        .feature-icon.icon-accent {
            background: linear-gradient(135deg, rgba(255, 107, 53, 0.15), rgba(255, 107, 53, 0.05));
            color: var(--accent);
            border-color: rgba(255, 107, 53, 0.25);
        }

        .feature-icon.icon-purple {
            background: linear-gradient(135deg, rgba(123, 47, 247, 0.15), rgba(123, 47, 247, 0.05));
            color: #a78bfa;
            border-color: rgba(123, 47, 247, 0.25);
        }

        .feature-icon.icon-green {
            background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(34, 197, 94, 0.05));
            color: #22c55e;
            border-color: rgba(34, 197, 94, 0.25);
        }

        .feature-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .feature-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

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

        .category-card {
            display: flex;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-glow);
        }

        .category-img {
            width: 50%;
            min-height: 300px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .category-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 40%, rgba(19, 26, 43, 0.6) 100%);
        }

        .category-content {
            padding: 40px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }

        .category-content .eyebrow {
            display: inline-block;
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .category-title {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .category-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .category-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
        }

        .category-list li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-soft);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .category-list li i {
            color: var(--primary);
            font-size: 12px;
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg-dark);
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-glow);
        }

        .news-cover {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .news-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(19, 26, 43, 0.8) 100%);
        }

        .news-cover .badge-custom {
            position: absolute;
            top: 14px;
            right: 14px;
            z-index: 2;
            backdrop-filter: blur(8px);
            background: rgba(6, 9, 18, 0.7);
        }

        .news-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
            font-size: 13px;
        }

        .news-date {
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-date i {
            font-size: 13px;
        }

        .news-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 12px;
            flex: 1;
        }

        .news-title a {
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-title a:hover {
            color: var(--primary);
        }

        .news-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .news-link i {
            font-size: 12px;
            transition: transform 0.3s;
        }

        .news-link:hover i {
            transform: translateX(4px);
        }

        .news-empty {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border-color);
            color: var(--text-muted);
            font-size: 16px;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 9, 18, 0.94) 0%, rgba(10, 14, 26, 0.88) 50%, rgba(6, 9, 18, 0.94) 100%);
        }

        .stats-section .section-header {
            position: relative;
            z-index: 2;
        }

        .stats-section .container {
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 40px 24px;
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            transition: var(--transition);
        }

        .stat-item:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            background: rgba(0, 212, 255, 0.06);
        }

        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-item .stat-number .accent {
            color: var(--primary);
        }

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

        /* ===== 观赛流程 ===== */
        .process-section {
            background: var(--bg-deep);
        }

        .process-item {
            position: relative;
            text-align: center;
            padding: 40px 24px;
            transition: var(--transition);
        }

        .process-item::before {
            content: '';
            position: absolute;
            top: 40px;
            left: -50%;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0.3;
            z-index: 0;
        }

        .col-lg-4:first-child .process-item::before {
            display: none;
        }

        .process-number {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            margin: 0 auto 24px;
            box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
            position: relative;
            z-index: 2;
        }

        .process-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: rgba(0, 212, 255, 0.1);
            color: var(--primary);
            margin: -20px auto 20px;
            position: relative;
            z-index: 2;
            border: 1px solid var(--border-glow);
        }

        .process-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .process-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

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

        .accordion-flush .accordion-item {
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .accordion-flush .accordion-item:hover {
            border-color: var(--border-glow);
        }

        .accordion-flush .accordion-button {
            background: var(--bg-card);
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 22px 24px;
            box-shadow: none;
            transition: var(--transition);
        }

        .accordion-flush .accordion-button:not(.collapsed) {
            background: var(--bg-card);
            color: var(--primary);
            box-shadow: none;
            border-bottom: 1px solid var(--border-color);
        }

        .accordion-flush .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(0, 212, 255, 0.3);
            outline-offset: -2px;
        }

        .accordion-flush .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2300d4ff' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
        }

        .accordion-flush .accordion-body {
            background: var(--bg-card);
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 20px 24px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 9, 18, 0.9) 0%, rgba(10, 14, 26, 0.8) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            line-height: 1.3;
        }

        .cta-title .text-glow {
            color: var(--primary);
        }

        .cta-text {
            font-size: 16px;
            color: var(--text-soft);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 24px;
        }

        .footer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
            padding-bottom: 32px;
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
        }

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

        .footer-nav {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-nav a {
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
        }

        .footer-nav a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .footer-description {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 480px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .footer-bottom a {
            color: var(--text-soft);
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 80px 0;
            }
            .hero-title {
                font-size: 40px;
            }
            .category-card {
                flex-direction: column;
            }
            .category-img {
                width: 100%;
                min-height: 220px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .hero-section {
                padding-top: calc(var(--header-height) + 40px);
                padding-bottom: 60px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-stats {
                gap: 24px;
                padding: 20px 24px;
                flex-wrap: wrap;
            }
            .hero-stat .stat-num {
                font-size: 22px;
            }
            .header-grid {
                grid-template-columns: auto 1fr auto;
                gap: 12px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .nav-left,
            .nav-right .nav-link-custom {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .mobile-menu {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(6, 9, 18, 0.98);
                backdrop-filter: blur(20px);
                z-index: 1030;
            }
            .stats-section .stat-item {
                margin-bottom: 16px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
            .cta-title {
                font-size: 28px;
            }
            .category-content {
                padding: 28px 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-buttons .btn {
                width: 100%;
                max-width: 280px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .section-header {
                margin-bottom: 40px;
                padding: 0 8px;
            }
            .section-title {
                font-size: 24px;
            }
            .feature-card {
                padding: 28px 20px;
            }
            .footer-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }

/* roulang page: article */
:root {
            --primary: #00e5ff;
            --primary-rgb: 0, 229, 255;
            --primary-dark: #00b8d4;
            --accent: #7c5cff;
            --accent-rgb: 124, 92, 255;
            --bg-body: #0a0e17;
            --bg-deep: #070a12;
            --bg-panel: #111827;
            --bg-card: #161e2e;
            --border-soft: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 229, 255, 0.25);
            --text-main: #e9edf5;
            --text-muted: #8a94a8;
            --radius-xl: 24px;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 14px 48px rgba(0, 0, 0, 0.38);
            --font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% -10%, rgba(0, 229, 255, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 85% 110%, rgba(124, 92, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: relative;
            background: rgba(10, 14, 23, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-soft);
            z-index: 100;
        }

        .site-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            position: relative;
            gap: 20px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }

        .nav-right {
            justify-content: flex-end;
        }

        .nav-link-custom {
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.3px;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-link-custom::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: right center;
            transition: transform 0.3s ease;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--text-main);
        }

        .nav-link-custom:hover::after,
        .nav-link-custom.active::after {
            transform: scaleX(1);
            transform-origin: left center;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            padding: 4px 8px;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.18), rgba(124, 92, 255, 0.18));
            border: 1px solid var(--border-glow);
            border-radius: 12px;
            color: var(--primary);
            font-size: 15px;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
                padding: 12px 0;
            }
            .brand-logo {
                order: 0;
                width: 100%;
                justify-content: center;
                font-size: 18px;
            }
            .nav-left,
            .nav-right {
                flex: 1;
                gap: 16px;
            }
            .nav-right {
                justify-content: flex-end;
            }
            .nav-link-custom {
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .nav-left,
            .nav-right {
                gap: 12px;
            }
            .nav-link-custom {
                font-size: 13px;
                padding: 6px 0;
            }
            .brand-logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }
        }

        /* ===== 通用按钮 ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #00e5ff, #00b8d4);
            color: #06222b;
            font-weight: 700;
            border: none;
            border-radius: 50px;
            padding: 14px 36px;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(0, 229, 255, 0.25);
        }

        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(0, 229, 255, 0.35);
            color: #06222b;
        }

        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: 0 3px 12px rgba(0, 229, 255, 0.2);
        }

        .btn-primary-custom:focus-visible,
        .btn-cta-custom:focus-visible,
        .btn-outline-custom:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.5);
            outline-offset: 3px;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            padding: 12px 28px;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-outline-custom:hover {
            background: rgba(0, 229, 255, 0.08);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-cta-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, #00e5ff, #7c5cff);
            color: #fff;
            font-weight: 700;
            border: none;
            border-radius: 50px;
            padding: 16px 42px;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(0, 229, 255, 0.3);
        }

        .btn-cta-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 229, 255, 0.4);
            color: #fff;
        }

        .btn-cta-custom:active {
            transform: translateY(0);
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 130px 0 90px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            background-color: var(--bg-deep);
            overflow: hidden;
            border-bottom: 1px solid var(--border-soft);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 10, 18, 0.72) 0%, rgba(7, 10, 18, 0.82) 40%, rgba(10, 14, 23, 0.96) 100%);
            z-index: 1;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 280px;
            background: radial-gradient(ellipse at 30% 0%, rgba(0, 229, 255, 0.14) 0%, transparent 60%);
            z-index: 2;
        }

        .article-hero .container {
            position: relative;
            z-index: 3;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 14px;
            margin-bottom: 28px;
            color: var(--text-muted);
        }

        .breadcrumb-custom a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .breadcrumb-custom .bread-sep {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.3);
        }

        .breadcrumb-custom .breadcrumb-current {
            color: var(--primary);
            font-weight: 500;
        }

        .badge-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 229, 255, 0.14);
            border: 1px solid var(--border-glow);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        .article-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin: 0 0 20px;
            max-width: 860px;
            letter-spacing: -0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .meta-item i {
            color: var(--primary);
            font-size: 13px;
        }

        .meta-status {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.08);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            color: var(--primary);
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .meta-status .dot {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.8);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 90px 0 60px;
            }
            .article-title {
                font-size: 30px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .article-hero {
                padding: 70px 0 50px;
            }
            .article-title {
                font-size: 24px;
            }
            .meta-status {
                padding: 4px 10px;
                font-size: 12px;
            }
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 70px 0 60px;
            position: relative;
            z-index: 1;
        }

        .article-panel {
            background: var(--bg-panel);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            margin-bottom: 32px;
        }

        .article-cover-wrap {
            position: relative;
            height: 360px;
            overflow: hidden;
            border-bottom: 1px solid var(--border-soft);
        }

        .article-cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .article-cover-wrap img:hover {
            transform: scale(1.03);
        }

        .article-cover-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(17, 24, 39, 0.6) 100%);
        }

        .article-body-container {
            padding: 40px 44px 32px;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.95;
            color: rgba(233, 237, 245, 0.92);
        }

        .article-body p {
            margin-bottom: 1.6rem;
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin: 2.4rem 0 1.2rem;
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-main);
            margin: 2rem 0 1rem;
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin: 1.6rem 0 0.8rem;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.6rem;
            padding-left: 1.4rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
        }

        .article-body ul li::marker {
            color: var(--primary);
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(0, 229, 255, 0.06);
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-muted);
            font-style: italic;
            margin: 1.8rem 0;
        }

        .article-body img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            margin: 1.5rem 0;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--primary-dark);
        }

        .article-body code {
            background: rgba(0, 229, 255, 0.08);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 15px;
        }

        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border-soft);
            padding: 12px 14px;
            text-align: left;
        }

        .article-body table th {
            background: rgba(0, 229, 255, 0.08);
            color: var(--primary);
            font-weight: 600;
        }

        .article-footer-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 24px 44px 32px;
            border-top: 1px solid var(--border-soft);
        }

        .article-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-soft);
            color: var(--text-muted);
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 50px;
            transition: var(--transition);
        }

        .article-tag:hover {
            border-color: var(--border-glow);
            color: var(--primary);
            background: rgba(0, 229, 255, 0.06);
        }

        .article-tag i {
            font-size: 11px;
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .article-main {
                padding: 50px 0 40px;
            }
            .article-cover-wrap {
                height: 240px;
            }
            .article-body-container {
                padding: 24px 20px 20px;
            }
            .article-footer-meta {
                padding: 16px 20px 24px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
        }

        @media (max-width: 520px) {
            .article-cover-wrap {
                height: 180px;
            }
            .article-body-container {
                padding: 20px 16px 16px;
            }
            .article-footer-meta {
                padding: 14px 16px 20px;
            }
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            position: sticky;
            top: 24px;
        }

        .sidebar-card {
            background: var(--bg-panel);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }

        .sidebar-card:hover {
            border-color: rgba(0, 229, 255, 0.2);
            box-shadow: var(--shadow-lg);
        }

        .sidebar-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-soft);
        }

        .sidebar-title i {
            color: var(--primary);
            font-size: 16px;
        }

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

        .sidebar-list li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .sidebar-list li:last-child {
            border-bottom: 0;
        }

        .sidebar-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            text-decoration: none;
            color: var(--text-main);
            transition: var(--transition);
        }

        .sidebar-item:hover {
            color: var(--primary);
            transform: translateX(4px);
        }

        .item-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            font-weight: 700;
            font-size: 12px;
            border-radius: 8px;
            padding: 4px 9px;
            min-width: 32px;
            flex-shrink: 0;
            border: 1px solid rgba(0, 229, 255, 0.15);
        }

        .item-content {
            display: flex;
            flex-direction: column;
            gap: 5px;
            min-width: 0;
        }

        .item-title {
            font-size: 14px;
            line-height: 1.5;
            font-weight: 500;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .item-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .sidebar-tip {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(124, 92, 255, 0.08));
            border: 1px solid rgba(0, 229, 255, 0.15);
            text-align: center;
            padding: 28px 20px;
        }

        .tip-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(0, 229, 255, 0.14);
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 16px;
            border: 1px solid rgba(0, 229, 255, 0.2);
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.15);
        }

        .sidebar-tip h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .sidebar-tip p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 991px) {
            .article-sidebar {
                position: static;
                margin-top: 20px;
            }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 70px 0;
            background: var(--bg-deep);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
            position: relative;
            z-index: 1;
        }

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

        .section-header h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-header h2 i {
            color: var(--primary);
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
        }

        .related-card {
            display: block;
            background: var(--bg-panel);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-lg);
        }

        .related-card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .related-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 15, 24, 0.7) 100%);
        }

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

        .badge-related {
            display: inline-block;
            background: rgba(0, 229, 255, 0.12);
            border: 1px solid rgba(0, 229, 255, 0.2);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
        }

        .related-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (max-width: 768px) {
            .related-section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .related-card-img {
                height: 160px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 0;
            background: var(--bg-body);
            position: relative;
            z-index: 1;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 10px;
        }

        .faq-item {
            background: var(--bg-panel);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.2);
            box-shadow: var(--shadow-md);
        }

        .faq-item h3 {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .faq-item h3 i {
            color: var(--primary);
            font-size: 14px;
            width: 22px;
        }

        .faq-item p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
            padding-left: 34px;
        }

        @media (max-width: 768px) {
            .faq-section {
                padding: 50px 0;
            }
            .faq-item {
                padding: 18px 20px;
            }
            .faq-item h3 {
                font-size: 15px;
            }
            .faq-item p {
                padding-left: 30px;
                font-size: 13px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 60px 0 90px;
            background: var(--bg-body);
            position: relative;
            z-index: 1;
        }

        .cta-box {
            background: var(--bg-panel);
            background-size: cover;
            background-position: center;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-xl);
            padding: 70px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 10, 18, 0.85) 0%, rgba(7, 10, 18, 0.7) 100%);
            z-index: 1;
        }

        .cta-box h2,
        .cta-box p,
        .cta-box .btn-cta-custom {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-box p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 30px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 0 70px;
            }
            .cta-box {
                padding: 50px 24px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .cta-box p {
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .cta-box {
                padding: 40px 18px;
                border-radius: var(--radius-lg);
            }
            .cta-box h2 {
                font-size: 22px;
            }
        }

        /* ===== 文章内联 CTA ===== */
        .article-inline-cta {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(124, 92, 255, 0.08));
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 26px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 20px;
        }

        .article-inline-cta .cta-text h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .article-inline-cta .cta-text p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        @media (max-width: 768px) {
            .article-inline-cta {
                padding: 20px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-page {
            padding: 130px 0;
            background: var(--bg-body);
            position: relative;
            z-index: 1;
            min-height: 70vh;
            display: flex;
            align-items: center;
        }

        .not-found-box {
            text-align: center;
            background: var(--bg-panel);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            max-width: 560px;
            margin: 0 auto;
            box-shadow: var(--shadow-lg);
        }

        .not-found-box .not-found-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            border-radius: 24px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            font-size: 32px;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .not-found-box h1 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 30px;
            font-size: 15px;
        }

        @media (max-width: 520px) {
            .not-found-box {
                padding: 40px 24px;
            }
            .not-found-box h1 {
                font-size: 22px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-soft);
            padding: 60px 0 32px;
            position: relative;
            z-index: 1;
            margin-top: auto;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 200px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }

        .footer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            transition: var(--transition);
        }

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

        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 13px;
        }

        .footer-nav {
            display: flex;
            gap: 24px;
        }

        .footer-nav a {
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .footer-description {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 2;
            margin-bottom: 0;
            max-width: 460px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid var(--border-soft);
            padding-top: 24px;
            margin-top: 32px;
            color: var(--text-muted);
            font-size: 13px;
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 24px;
            }
            .footer-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-description {
                font-size: 13px;
            }
            .footer-bottom {
                font-size: 12px;
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== focus 可访问性 ===== */
        a:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.5);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-deep);
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(0, 229, 255, 0.3);
        }

        ::selection {
            background: rgba(0, 229, 255, 0.25);
            color: #fff;
        }

/* roulang page: category1 */
:root {
            --primary: #00e5a0;
            --primary-dark: #00b87f;
            --secondary: #7b5cff;
            --accent: #ff3d6e;
            --bg-dark: #0b0f1a;
            --bg-deep: #070a13;
            --bg-card: #111a28;
            --bg-card-hover: #172132;
            --text: #e6edf3;
            --text-muted: #8b9bb4;
            --border: rgba(255, 255, 255, 0.07);
            --border-glow: rgba(0, 229, 160, 0.35);
            --radius: 16px;
            --radius-lg: 24px;
            --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 8px 30px rgba(0, 229, 160, 0.18);
            --transition: all .3s ease;
            --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            line-height: 1.7;
            background:
                radial-gradient(ellipse at 20% 0%, rgba(123, 92, 255, 0.12), transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 229, 160, 0.08), transparent 40%),
                var(--bg-dark);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        a:hover {
            color: inherit;
        }

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

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
        }

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

        .container {
            max-width: 1320px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 110px 0;
            position: relative;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 3.6vw, 42px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .btn-guide {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            background: var(--primary);
            color: var(--bg-dark);
            border: none;
            transition: var(--transition);
            box-shadow: var(--shadow-glow);
        }

        .btn-guide:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(0, 229, 160, 0.35);
            color: var(--bg-dark);
        }

        .btn-ghost {
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.14);
            box-shadow: none;
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 229, 160, 0.06);
            box-shadow: none;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 15, 26, 0.86);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            position: relative;
            gap: 16px;
        }

        .brand-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.4px;
            white-space: nowrap;
            z-index: 2;
            transition: color .3s ease;
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--bg-dark);
            font-size: 17px;
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.25);
        }

        .header-nav {
            display: flex;
            gap: 8px;
            z-index: 1;
        }

        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: 999px;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-link-custom:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link-custom.active {
            color: var(--bg-dark);
            background: var(--primary);
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.3);
            font-weight: 600;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            z-index: 1;
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            color: var(--text);
            font-size: 18px;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .mobile-toggle i {
            transition: transform .3s ease;
        }

        .mobile-toggle[aria-expanded="true"] i {
            transform: rotate(90deg);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 14px 24px 20px;
            border-top: 1px solid var(--border);
            background: rgba(11, 15, 26, 0.98);
        }

        .mobile-menu .nav-link-custom {
            padding: 13px 16px;
            border-radius: 14px;
            font-size: 16px;
        }

        .mobile-menu .nav-link-custom:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-menu .nav-link-custom.active {
            color: var(--primary);
            background: rgba(0, 229, 160, 0.1);
            box-shadow: none;
        }

        /* Banner */
        .page-banner {
            position: relative;
            padding: 170px 0 120px;
            text-align: center;
            overflow: hidden;
            background:
                linear-gradient(135deg, rgba(7, 10, 19, 0.82) 0%, rgba(11, 15, 26, 0.68) 50%, rgba(7, 10, 19, 0.9) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 640px;
            height: 220px;
            background: radial-gradient(ellipse, rgba(0, 229, 160, 0.28), transparent 70%);
            filter: blur(40px);
            z-index: 0;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 28px;
            backdrop-filter: blur(6px);
        }

        .banner-title {
            font-size: clamp(42px, 6vw, 72px);
            font-weight: 900;
            line-height: 1.08;
            letter-spacing: -1px;
            margin-bottom: 20px;
            background: linear-gradient(120deg, #ffffff 20%, var(--primary) 80%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .banner-subtitle {
            max-width: 720px;
            margin: 0 auto 36px;
            color: #b6c2d4;
            font-size: 18px;
            line-height: 1.8;
        }

        .banner-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .banner-meta {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 18px;
            border-radius: 999px;
            background: rgba(17, 26, 40, 0.75);
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }

        .banner-meta span i {
            color: var(--primary);
        }

        /* Intro */
        .intro-section {
            background: var(--bg-deep);
        }

        .intro-text {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 28px;
        }

        .intro-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 32px;
        }

        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: #c3cdd9;
            font-size: 15px;
        }

        .intro-list li i {
            color: var(--primary);
            font-size: 18px;
            margin-top: 2px;
        }

        .intro-panel {
            position: relative;
            background: linear-gradient(145deg, var(--bg-card), var(--bg-deep));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 42px 38px;
            overflow: hidden;
        }

        .intro-panel::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(0, 229, 160, 0.18), transparent 70%);
            filter: blur(20px);
        }

        .intro-panel-icon {
            width: 64px;
            height: 64px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--bg-dark);
            font-size: 26px;
            margin-bottom: 24px;
            box-shadow: 0 12px 32px rgba(0, 229, 160, 0.25);
        }

        .intro-panel h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .intro-panel p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.09);
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Guides */
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            height: 100%;
            transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
        }

        .guide-card:hover {
            transform: translateY(-8px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow);
        }

        .guide-card-media {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .guide-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

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

        .card-flag {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.92);
            color: var(--bg-dark);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .guide-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
        }

        .card-tags .tag-item {
            padding: 4px 12px;
            font-size: 12px;
            background: rgba(0, 229, 160, 0.08);
            border-color: rgba(0, 229, 160, 0.16);
            color: var(--primary);
        }

        .card-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
            letter-spacing: 0.2px;
        }

        .card-text {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 18px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: gap .3s ease;
        }

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

        /* Steps */
        .steps-section {
            background: var(--bg-deep);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 26px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .step-num {
            width: 58px;
            height: 58px;
            margin: 0 auto 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 800;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--bg-dark);
            box-shadow: 0 12px 30px rgba(123, 92, 255, 0.28);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .step-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Stats */
        .stats-section {
            background:
                linear-gradient(135deg, rgba(7, 10, 19, 0.92), rgba(11, 15, 26, 0.82)),
                url('/assets/images/backpic/back-2.png') center center / cover fixed no-repeat;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: rgba(17, 26, 40, 0.82);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 20px;
            text-align: center;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
        }

        .stat-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .stat-number {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary);
            letter-spacing: -1px;
        }

        .stat-number span {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 8px;
        }

        /* FAQ */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion.faq-accordion {
            --bs-accordion-bg: var(--bg-card);
            --bs-accordion-color: var(--text);
            --bs-accordion-border-color: var(--border);
            --bs-accordion-border-radius: var(--radius);
            --bs-accordion-inner-border-radius: 12px;
            --bs-accordion-btn-color: var(--text);
            --bs-accordion-btn-bg: var(--bg-card);
            --bs-accordion-btn-icon: none;
            --bs-accordion-btn-active-icon: none;
            --bs-accordion-btn-padding-y: 20px;
            --bs-accordion-btn-padding-x: 24px;
            --bs-accordion-body-padding-y: 20px;
            --bs-accordion-body-padding-x: 24px;
            --bs-accordion-active-color: var(--primary);
            --bs-accordion-active-bg: rgba(0, 229, 160, 0.04);
            --bs-accordion-btn-focus-box-shadow: 0 0 0 0 rgba(0, 229, 160, 0.12);
            --bs-accordion-btn-focus-border-color: transparent;
        }

        .faq-accordion .accordion-item {
            border-radius: var(--radius) !important;
            border: 1px solid var(--border) !important;
            margin-bottom: 16px;
            background: var(--bg-card);
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 16px;
        }

        .faq-accordion .accordion-button::after {
            display: none;
        }

        .faq-accordion .accordion-button .fa-chevron-down {
            margin-left: auto;
            transition: transform .3s ease;
            color: var(--text-muted);
        }

        .faq-accordion .accordion-button:not(.collapsed) .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-body {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid var(--border);
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 110px 0;
            text-align: center;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 10, 19, 0.85), rgba(11, 15, 26, 0.9));
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-content .section-title {
            max-width: 620px;
            margin: 0 auto 16px;
        }

        .cta-content .section-desc {
            margin-bottom: 36px;
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 64px 0 32px;
            position: relative;
            overflow: hidden;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0.6;
        }

        .footer-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.3px;
            transition: var(--transition);
        }

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

        .footer-nav {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-nav a {
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .footer-description {
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 460px;
            margin-bottom: 0;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .guides-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .section {
                padding: 90px 0;
            }
        }

        @media (max-width: 768px) {
            .header-nav.nav-left,
            .header-nav.nav-right {
                display: none;
            }

            .mobile-toggle {
                display: inline-flex;
            }

            .mobile-menu.open {
                display: flex;
            }

            .page-banner {
                padding: 130px 0 90px;
            }

            .banner-title {
                font-size: 40px;
            }

            .banner-subtitle {
                font-size: 16px;
            }

            .section {
                padding: 72px 0;
            }

            .section-header {
                margin-bottom: 44px;
            }

            .intro-panel {
                margin-top: 16px;
            }

            .stats-section {
                background-attachment: scroll;
            }
        }

        @media (max-width: 576px) {
            .guides-grid,
            .steps-grid,
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .brand-logo {
                font-size: 18px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .header-inner {
                min-height: 68px;
            }

            .page-banner {
                padding: 110px 0 76px;
            }

            .banner-meta {
                gap: 10px;
            }

            .banner-meta span {
                padding: 7px 14px;
                font-size: 13px;
            }

            .btn-guide {
                padding: 11px 24px;
                font-size: 14px;
            }

            .step-card {
                padding: 28px 20px;
            }

            .stat-number {
                font-size: 38px;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }

            .footer-header {
                flex-direction: column;
                align-items: flex-start;
            }
        }