/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #60a5fa;
            --accent: #f97316;
            --accent-dark: #ea580c;
            --accent-light: #fb923c;
            --bg-dark: #0b1121;
            --bg-mid: #111827;
            --bg-card: #1a2332;
            --bg-card-hover: #1f2a3d;
            --bg-section: #0f172a;
            --text-white: #f8fafc;
            --text-light: #cbd5e1;
            --text-muted: #94a3b8;
            --text-dark: #1e293b;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent-light);
            outline: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            background: none;
            color: inherit;
            outline: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-white);
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.8rem);
        }
        h4 {
            font-size: clamp(1rem, 2vw, 1.3rem);
        }
        p {
            margin-bottom: 0.8rem;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-mid {
            background: var(--bg-mid);
        }
        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-head .subtitle {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 3px;
            color: var(--accent);
            margin-bottom: 12px;
            background: rgba(249, 115, 22, 0.12);
            padding: 4px 16px;
            border-radius: 20px;
        }
        .section-head h2 {
            margin-bottom: 16px;
        }
        .section-head p {
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 0 auto 20px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 48px);
            max-width: 1100px;
            background: rgba(11, 17, 33, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 60px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 0 28px;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 17, 33, 0.92);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .site-logo span {
            background: linear-gradient(90deg, var(--text-white), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--text-white);
            background: rgba(37, 99, 235, 0.2);
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.08);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px !important;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
            color: #fff !important;
            border-radius: 30px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4) !important;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--text-white);
            border: 1px solid var(--border-color);
            cursor: pointer;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: var(--bg-dark);
            overflow: hidden;
            padding: 120px 0 80px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 80%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 80%);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(249, 115, 22, 0.08) 0%, transparent 60%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 0 24px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid rgba(37, 99, 235, 0.25);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .hero-badge i {
            font-size: 0.7rem;
        }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--text-white) 40%, var(--primary-light) 70%, var(--accent-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1rem, 1.8vw, 1.25rem);
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus-visible {
            transform: translateY(-3px);
            box-shadow: 0 8px 35px rgba(37, 99, 235, 0.45);
            color: #fff;
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-white);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover,
        .btn-secondary:focus-visible {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
            color: var(--text-white);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(249, 115, 22, 0.35);
        }
        .btn-accent:hover,
        .btn-accent:focus-visible {
            transform: translateY(-3px);
            box-shadow: 0 8px 35px rgba(249, 115, 22, 0.45);
            color: #fff;
        }
        .btn-sm {
            padding: 10px 20px;
            font-size: 0.85rem;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid var(--border-color);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .hero-stat .num span {
            color: var(--accent);
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== 特色板块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: #fff;
        }
        .feature-icon.blue {
            background: linear-gradient(135deg, #2563eb, #1e40af);
        }
        .feature-icon.orange {
            background: linear-gradient(135deg, #f97316, #ea580c);
        }
        .feature-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
        }
        .feature-card h3 {
            margin-bottom: 12px;
            font-size: 1.2rem;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 分类入口 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
            min-height: 320px;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-lg);
        }
        .category-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .card-img {
            transform: scale(1.05);
        }
        .category-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.7rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            background: rgba(37, 99, 235, 0.15);
            color: var(--primary-light);
            margin-bottom: 10px;
            width: fit-content;
        }
        .category-card .card-tag.orange {
            background: rgba(249, 115, 22, 0.15);
            color: var(--accent-light);
        }
        .category-card .card-tag.green {
            background: rgba(16, 185, 129, 0.15);
            color: #34d399;
        }
        .category-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-light);
            transition: var(--transition);
        }
        .category-card .card-link i {
            transition: var(--transition);
        }
        .category-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: var(--transition);
        }
        .news-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }
        .news-card .thumb {
            width: 120px;
            min-height: 90px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-mid);
        }
        .news-card .info {
            flex: 1;
            min-width: 0;
        }
        .news-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .news-card .meta .cat {
            padding: 1px 10px;
            border-radius: 10px;
            background: rgba(37, 99, 235, 0.12);
            color: var(--primary-light);
            font-weight: 500;
        }
        .news-card h4 {
            font-size: 0.95rem;
            margin-bottom: 6px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card h4 a {
            color: var(--text-white);
            transition: var(--transition);
        }
        .news-card h4 a:hover {
            color: var(--primary-light);
        }
        .news-card .excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1rem;
        }
        .news-empty i {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
            color: var(--text-muted);
            opacity: 0.4;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            transition: var(--transition);
        }
        .stat-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .stat-card .icon {
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--primary-light);
        }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -1px;
        }
        .stat-card .num span {
            color: var(--accent);
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
            opacity: 0.3;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.2);
            position: relative;
        }
        .step-num::after {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            border: 1px solid rgba(37, 99, 235, 0.2);
            animation: pulse-ring 2s infinite;
        }
        @keyframes pulse-ring {
            0% {
                transform: scale(1);
                opacity: 1;
            }
            100% {
                transform: scale(1.3);
                opacity: 0;
            }
        }
        .step-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question .icon {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .icon {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(249, 115, 22, 0.06));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box {
            text-align: center;
            padding: 40px 0;
        }
        .cta-box h2 {
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-mid);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            margin-bottom: 16px;
            color: var(--text-white);
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 1024px) {
            .site-header {
                padding: 0 20px;
            }
            .main-nav {
                gap: 4px;
            }
            .main-nav a {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
            .features-grid,
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 12px;
                width: calc(100% - 24px);
                padding: 0 16px;
                border-radius: 40px;
                height: 64px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 12px;
                right: 12px;
                background: rgba(11, 17, 33, 0.96);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border: 1px solid var(--border-color);
                border-radius: var(--radius-md);
                padding: 20px;
                flex-direction: column;
                gap: 6px;
                display: none;
                box-shadow: var(--shadow-lg);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 0.95rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .main-nav a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .hero {
                padding: 100px 0 60px;
                min-height: auto;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 36px;
                padding-top: 28px;
            }
            .hero-stat .num {
                font-size: 1.6rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card {
                flex-direction: column;
                padding: 16px;
            }
            .news-card .thumb {
                width: 100%;
                height: 140px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .num {
                font-size: 1.8rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.9rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
            .cta-box {
                padding: 20px 0;
            }
            .hero h1 {
                font-size: clamp(1.8rem, 8vw, 2.6rem);
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .site-header {
                padding: 0 12px;
                height: 58px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .num {
                font-size: 1.5rem;
            }
            .news-card .thumb {
                height: 110px;
            }
            .features-grid,
            .categories-grid {
                gap: 16px;
            }
            .feature-card {
                padding: 24px 18px 22px;
            }
            .category-card {
                min-height: 260px;
            }
            .category-card .card-img {
                height: 140px;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-social a {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .section-head p {
                font-size: 0.95rem;
            }
            .step-num {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }

        /* ===== 辅助 ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* ===== 选中样式 ===== */
        ::selection {
            background: rgba(37, 99, 235, 0.3);
            color: var(--text-white);
        }

        /* ===== 焦点样式 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a73e8;
            --primary-dark: #0d47a1;
            --primary-light: #4fc3f7;
            --primary-bg: #e8f0fe;
            --secondary: #ff6d00;
            --secondary-light: #ffa040;
            --accent: #00c853;
            --bg-main: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-dark-card: #17263a;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-light: #8899aa;
            --text-white: #f0f4ff;
            --border-color: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.12);
            --shadow-glow: 0 0 30px rgba(26,115,232,0.20);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --spacing-section: 80px;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-main);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            h3 { font-size: 1.2rem; }
            :root { --spacing-section: 48px; }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226,232,240,0.6);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.96);
            box-shadow: 0 4px 24px rgba(0,0,0,0.06);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }
        .site-logo:hover { color: var(--primary); }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(26,115,232,0.30);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: #fff;
            padding: 8px 22px;
            border-radius: 100px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(255,109,0,0.25);
        }
        .main-nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,109,0,0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover { background: var(--primary-bg); }

        @media (max-width: 900px) {
            .site-header { padding: 0 20px; }
            .nav-toggle { display: block; }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 12px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 24px 48px rgba(0,0,0,0.10);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a { width: 100%; text-align: center; padding: 12px; }
            .main-nav a.nav-cta { margin-top: 8px; }
        }

        /* ===== 文章页头 ===== */
        .article-hero {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 40px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.88) 0%, rgba(15,26,46,0.70) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a {
            color: rgba(255,255,255,0.7);
        }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb .sep { opacity: 0.5; }
        .article-hero .breadcrumb .current { color: #fff; }
        .article-hero h1 {
            color: #fff;
            font-size: 2.4rem;
            max-width: 800px;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-hero .meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-hero .meta .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-hero .meta i { margin-right: 6px; }

        @media (max-width: 768px) {
            .article-hero { padding-top: calc(var(--header-height) + 24px); padding-bottom: 28px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .meta { gap: 12px; font-size: 0.8rem; }
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: var(--spacing-section) 0;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content h2, .article-body .content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            color: var(--text-primary);
        }
        .article-body .content ul, .article-body .content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .content li {
            margin-bottom: 0.5em;
        }
        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .content a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid transparent;
        }
        .article-body .content a:hover { border-bottom-color: var(--primary); }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-not-found h2 {
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 100px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-bg);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        .sidebar-card ul li a:hover { color: var(--primary); }
        .sidebar-card ul li a .num {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
        }
        .sidebar-card ul li a .num.top { background: var(--primary); color: #fff; }
        .sidebar-card .thumb-list li a img {
            width: 60px;
            height: 48px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .sidebar-card .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tags a {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 100px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 500;
        }
        .sidebar-card .tags a:hover {
            background: var(--primary);
            color: #fff;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--bg-dark), #1a2a4a);
            color: #fff;
            text-align: center;
        }
        .sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.15); }
        .sidebar-cta h3 i { color: var(--secondary); }
        .sidebar-cta p { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-bottom: 20px; }
        .sidebar-cta .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 100px;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .sidebar-cta .btn-download:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,109,0,0.30);
        }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
            .article-body { padding: 28px 24px; }
        }
        @media (max-width: 768px) {
            .article-body { padding: 20px 16px; }
            .article-body .content { font-size: 0.95rem; }
            .sidebar-card { padding: 20px; }
        }

        /* ===== 推荐板块 ===== */
        .section-recommend {
            padding: 0 0 var(--spacing-section);
        }
        .section-recommend .section-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }
        .section-recommend .section-title h2 {
            font-size: 1.5rem;
        }
        .section-recommend .section-title a {
            font-size: 0.9rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .section-recommend .section-title a:hover { color: var(--primary); }

        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .recommend-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .recommend-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .recommend-card .thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .recommend-card .info {
            padding: 20px;
        }
        .recommend-card .info h3 {
            font-size: 1rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .recommend-card .info h3 a { color: var(--text-primary); }
        .recommend-card .info h3 a:hover { color: var(--primary); }
        .recommend-card .info .meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .recommend-card .info .meta .tag {
            padding: 2px 10px;
            border-radius: 100px;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 500;
            font-size: 0.75rem;
        }

        @media (max-width: 900px) {
            .recommend-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .recommend-grid { grid-template-columns: 1fr; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
        }
        .site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }

        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 返回顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 4px 16px rgba(26,115,232,0.30);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
        }
        .back-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(26,115,232,0.40);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 480px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-body { padding: 16px 12px; }
            .sidebar-card { padding: 16px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1a2e;
            --primary-light: #1a2d4a;
            --primary-dark: #0a111f;
            --accent: #ff6d00;
            --accent-hover: #e65c00;
            --accent-glow: rgba(255, 109, 0, 0.3);
            --accent-soft: #fff3e6;
            --bg-body: #f4f6fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-section-alt: #eef1f7;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-light: #8896a8;
            --text-white: #ffffff;
            --text-muted: #9ca3af;
            --border-color: #e2e6ef;
            --border-light: #f0f2f5;
            --shadow-sm: 0 2px 8px rgba(15, 26, 46, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 26, 46, 0.1);
            --shadow-lg: 0 20px 60px rgba(15, 26, 46, 0.12);
            --shadow-xl: 0 30px 80px rgba(15, 26, 46, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 50px;
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

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

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .section-title {
            font-size: 2.2rem;
            margin-bottom: 0.75rem;
            font-weight: 800;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 2.5rem auto;
            text-align: center;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-header .section-title {
            position: relative;
            display: inline-block;
        }
        .section-header .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0 auto;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 1.8rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(15, 26, 46, 0.88);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(15, 26, 46, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-white);
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: var(--accent);
            transform: scale(1.02);
        }
        .site-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 4px 15px var(--accent-glow);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.75);
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--accent);
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .main-nav a.active:hover {
            background: var(--accent-hover);
        }
        .main-nav a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 8px 24px;
            font-weight: 600;
            box-shadow: 0 4px 20px var(--accent-glow);
            margin-left: 8px;
        }
        .main-nav a.nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--accent-glow);
        }
        .main-nav a.nav-cta i {
            margin-right: 6px;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 992px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 26, 46, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                max-height: 70vh;
                overflow-y: auto;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 20px;
                font-size: 1.05rem;
                text-align: center;
            }
            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
            }
            .site-header {
                padding: 0 16px;
            }
        }

        @media (max-width: 576px) {
            :root {
                --header-height: 64px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .main-nav a {
                padding: 10px 16px;
                font-size: 0.95rem;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            overflow: hidden;
            padding: 60px 0;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.88) 0%, rgba(15, 26, 46, 0.65) 100%);
            z-index: 1;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-body), transparent);
            z-index: 2;
        }
        .page-hero .container {
            position: relative;
            z-index: 3;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.75rem;
            letter-spacing: -0.03em;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .page-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 1.5rem auto;
            line-height: 1.7;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.25rem;
        }
        .page-hero .hero-badge i {
            color: var(--accent);
        }
        .page-hero .hero-search {
            max-width: 520px;
            margin: 0 auto;
            display: flex;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-pill);
            padding: 4px;
        }
        .page-hero .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 12px 20px;
            color: var(--text-white);
            font-size: 1rem;
            border-radius: var(--radius-pill);
        }
        .page-hero .hero-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .page-hero .hero-search button {
            background: var(--accent);
            border: none;
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .page-hero .hero-search button:hover {
            background: var(--accent-hover);
            transform: scale(1.02);
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: 260px;
                padding: 40px 0;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .hero-search {
                flex-direction: column;
                background: transparent;
                border: none;
                padding: 0;
                gap: 10px;
            }
            .page-hero .hero-search input {
                background: rgba(255, 255, 255, 0.1);
                border: 1px solid rgba(255, 255, 255, 0.15);
                padding: 12px 18px;
            }
            .page-hero .hero-search button {
                width: 100%;
                padding: 12px;
            }
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark .section-title,
        .section-dark .section-subtitle {
            color: var(--text-white);
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
        }

        /* ===== Category Tags ===== */
        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 1rem;
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: var(--radius-pill);
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
        }
        .category-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-soft);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .category-tag.active {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .category-tag i {
            font-size: 0.8rem;
        }

        /* ===== News Card ===== */
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .news-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-body);
        }
        .news-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-slow);
        }
        .news-card:hover .card-img img {
            transform: scale(1.06);
        }
        .news-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            font-weight: 600;
            z-index: 2;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        .news-card .card-img .card-date {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(15, 26, 46, 0.75);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            font-weight: 500;
            z-index: 2;
        }
        .news-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-body h3 a {
            color: var(--text-primary);
        }
        .news-card .card-body h3 a:hover {
            color: var(--accent);
        }
        .news-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 22px 18px;
            border-top: 1px solid var(--border-light);
        }
        .news-card .card-footer .author {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .news-card .card-footer .author img {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            object-fit: cover;
        }
        .news-card .card-footer .read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card .card-footer .read-more:hover {
            gap: 8px;
        }

        @media (max-width: 768px) {
            .news-card .card-body {
                padding: 16px 18px 18px;
            }
            .news-card .card-body h3 {
                font-size: 1.05rem;
            }
            .news-card .card-footer {
                padding: 10px 18px 14px;
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* ===== Featured / Special ===== */
        .featured-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            align-items: center;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }
        .featured-block .featured-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--bg-body);
        }
        .featured-block .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-slow);
        }
        .featured-block:hover .featured-img img {
            transform: scale(1.04);
        }
        .featured-block .featured-content {
            padding: 40px 40px 40px 0;
        }
        .featured-block .featured-content .badge {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            padding: 4px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .featured-block .featured-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .featured-block .featured-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .featured-block .featured-content .btn {
            padding: 12px 32px;
            border-radius: var(--radius-pill);
            font-weight: 600;
        }

        @media (max-width: 992px) {
            .featured-block {
                grid-template-columns: 1fr;
            }
            .featured-block .featured-content {
                padding: 30px 24px;
            }
            .featured-block .featured-content h2 {
                font-size: 1.4rem;
            }
            .featured-block .featured-img {
                aspect-ratio: 16 / 9;
            }
        }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            font-weight: 500;
        }
        .stat-item .stat-icon {
            font-size: 2rem;
            color: rgba(255, 255, 255, 0.15);
            margin-bottom: 12px;
        }

        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
        }

        /* ===== Expert / Analyst ===== */
        .expert-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            height: 100%;
        }
        .expert-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .expert-card .expert-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 16px;
            border: 3px solid var(--accent-soft);
        }
        .expert-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .expert-card .expert-title {
            color: var(--text-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 12px;
        }
        .expert-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .expert-card .expert-social {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 14px;
        }
        .expert-card .expert-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-section-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .expert-card .expert-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: scale(1.1);
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--bg-dark);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92), rgba(15, 26, 46, 0.7));
            z-index: 1;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-block .btn {
            padding: 14px 36px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-block .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 25px var(--accent-glow);
        }
        .cta-block .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 8px 40px var(--accent-glow);
        }
        .cta-block .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .cta-block .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(255, 109, 0, 0.1);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 20px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-block .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-question:hover {
            color: var(--accent);
        }
        .faq-item .faq-question i {
            transition: var(--transition);
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        @media (max-width: 768px) {
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.9rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand .site-logo {
            font-size: 1.25rem;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: -0.3px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: scale(1.1);
        }

        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 576px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:hover {
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            box-shadow: 0 8px 30px var(--accent-glow);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-color);
        }
        .btn-outline-dark:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-soft);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.05rem;
        }

        /* ===== Grid spacing helpers ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        @media (max-width: 992px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .grid-3,
            .grid-4,
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Pagination ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .pagination-wrap a,
        .pagination-wrap span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .pagination-wrap a:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-soft);
        }
        .pagination-wrap .active-page {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            box-shadow: 0 4px 15px var(--accent-glow);
        }
        .pagination-wrap .page-dots {
            border: none;
            background: transparent;
            width: auto;
            padding: 0 4px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span {
            color: var(--text-secondary);
        }
        .breadcrumb .sep {
            color: var(--text-light);
            font-size: 0.7rem;
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 25px var(--accent-glow);
            cursor: pointer;
            transition: var(--transition);
            border: none;
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
        }
        .back-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: all;
        }
        .back-top:hover {
            background: var(--accent-hover);
            transform: translateY(-4px) scale(1.05);
        }

        @media (max-width: 576px) {
            .back-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }
        .animate-in-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-in-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-in-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-in-delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 1200px) {
            .container {
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .breadcrumb {
                font-size: 0.8rem;
            }
            .page-hero .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
        }
        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .news-card .card-body h3 {
                font-size: 0.95rem;
            }
        }

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent-light {
            background: var(--accent-soft);
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .d-flex {
            display: flex;
        }
        .align-center {
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .text-center {
            text-align: center;
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2a7de1;
            --primary-dark: #1b5fa8;
            --primary-light: #e8f0fe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-secondary: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-inverse: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 4px 10px -5px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 30px 60px -10px rgba(0, 0, 0, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        /* ===== Header & Navigation (悬浮胶囊导航) ===== */
        .site-header {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 48px);
            max-width: var(--container-width);
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-radius: 60px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            padding: 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            z-index: 1000;
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .site-header.scrolled {
            top: 12px;
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.10);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), #4f46e5);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--border-light);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary-dark);
            background: var(--primary-light);
            font-weight: 600;
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), #4f46e5);
            color: #fff !important;
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(42, 125, 225, 0.3);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(42, 125, 225, 0.4);
            background: linear-gradient(135deg, var(--primary-dark), #4338ca);
        }

        /* ===== Hero / Banner (内页横幅) ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 64px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #0f172a 100%);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            color: var(--text-inverse);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            font-weight: 800;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .hero-tags .tag {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            transition: var(--transition);
        }
        .hero-tags .tag:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .hero-tags .tag i {
            margin-right: 6px;
            color: var(--accent);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-title {
            color: var(--text-inverse);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 40px;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card-body p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 30px;
            margin-bottom: 10px;
        }
        .card-badge.live {
            background: #fee2e2;
            color: #b91c1c;
            animation: pulse-badge 1.8s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }

        /* ===== Live Stream List ===== */
        .live-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .live-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .live-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .live-status {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #ef4444, #dc2626);
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.7rem;
            gap: 2px;
            box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
        }
        .live-status i {
            font-size: 1rem;
        }
        .live-status .live-dot {
            display: block;
            width: 8px;
            height: 8px;
            background: #fff;
            border-radius: 50%;
            animation: pulse-dot 1.4s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.7);
            }
        }
        .live-info {
            flex: 1;
            min-width: 0;
        }
        .live-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .live-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
        }
        .live-info .live-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 6px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .live-cta {
            flex-shrink: 0;
        }
        .live-cta .btn-sm {
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
            background: var(--primary);
            color: #fff;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .live-cta .btn-sm:hover {
            background: var(--primary-dark);
            transform: scale(1.03);
        }

        /* ===== Features / 直播特色 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 28px;
        }
        .feature-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            background: none;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question i {
            transition: var(--transition);
            font-size: 0.9rem;
            color: var(--text-light);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: var(--text-inverse);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #4f46e5);
            color: #fff;
            box-shadow: 0 8px 24px rgba(42, 125, 225, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(42, 125, 225, 0.4);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            color: var(--text-inverse);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: var(--text-inverse);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .site-footer .site-logo {
            color: var(--text-inverse);
            margin-bottom: 12px;
        }
        .site-footer .site-logo .logo-icon {
            background: linear-gradient(135deg, var(--primary), #4f46e5);
        }
        .site-footer p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-col h4 {
            color: var(--text-inverse);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .footer-grid .footer-brand {
                grid-column: 1 / -1;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .site-header {
                top: 12px;
                width: calc(100% - 24px);
                padding: 0 16px;
                border-radius: 40px;
                height: var(--header-height);
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: calc(var(--header-height) + 16px);
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: var(--radius-lg);
                flex-direction: column;
                padding: 16px 12px;
                box-shadow: var(--shadow-xl);
                border: 1px solid var(--border);
                display: none;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 18px;
                width: 100%;
                border-radius: var(--radius-sm);
                text-align: center;
            }
            .main-nav a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .page-hero {
                padding: 60px 0 48px;
                min-height: 220px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .live-item {
                flex-wrap: wrap;
            }
            .live-status {
                width: 48px;
                height: 48px;
                font-size: 0.6rem;
            }
            .live-cta {
                width: 100%;
                margin-top: 8px;
            }
            .live-cta .btn-sm {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .hero-tags .tag {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-buttons .btn {
                width: 100%;
                justify-content: center;
            }
        }

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

        /* ===== Utility ===== */
        .gap-8 {
            gap: 8px;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #06b6d4;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark2: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-inverse: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --spacing-section: 100px;
            --spacing-block: 64px;
            --container-max: 1200px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--nav-height);
        }

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }
        h1 {
            font-size: clamp(2.2rem, 6vw, 4rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }

        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.2;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.30);
        }
        .btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(37, 99, 235, 0.40);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: var(--bg-white);
            color: var(--text-primary);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            border: 1px solid var(--border);
        }
        .btn-secondary:hover {
            background: var(--bg-body);
            color: var(--text-primary);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            border-color: var(--primary-light);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary);
            box-shadow: none;
            border: 1px solid var(--primary);
        }
        .btn-ghost:hover {
            background: var(--primary-bg);
            color: var(--primary-dark);
            box-shadow: none;
        }
        .btn-lg {
            padding: 18px 42px;
            font-size: 1.1rem;
        }
        .btn-sm {
            padding: 10px 20px;
            font-size: 0.875rem;
        }

        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
            border: 1px solid rgba(37, 99, 235, 0.15);
        }
        .badge-hot {
            background: #fef2f2;
            color: #dc2626;
            border-color: rgba(220, 38, 38, 0.15);
        }
        .badge-new {
            background: #f0fdf4;
            color: #16a34a;
            border-color: rgba(22, 163, 74, 0.15);
        }
        .badge-accent {
            background: #fffbeb;
            color: var(--accent-dark);
            border-color: rgba(245, 158, 11, 0.15);
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .site-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 1.1rem;
        }
        .site-logo:hover {
            color: var(--text-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            position: relative;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition);
        }
        .main-nav a:hover {
            color: var(--text-primary);
            background: var(--bg-body);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .main-nav a.active::after {
            display: none;
        }
        .main-nav .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 24px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }
        .main-nav .nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
            transform: translateY(-1px);
            color: #fff !important;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 100px;
            background: var(--bg-dark);
            color: var(--text-inverse);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.30;
            mix-blend-mode: overlay;
        }
        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 41, 59, 0.70) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: #fff;
            margin-bottom: 16px;
        }
        .page-hero h1 .highlight {
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            color: rgba(241, 245, 249, 0.85);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 32px;
        }
        .page-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .page-hero .btn {
            box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
        }
        .page-hero .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.20);
            box-shadow: none;
        }
        .page-hero .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: rgba(255, 255, 255, 0.35);
        }

        .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(241, 245, 249, 0.6);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: rgba(241, 245, 249, 0.8);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: rgba(241, 245, 249, 0.4);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-sub {
            color: #fff;
        }
        .section-dark .section-sub {
            color: rgba(241, 245, 249, 0.7);
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-block);
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header .section-sub {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .badge {
            margin-bottom: 12px;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }

        /* ===== 网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* ===== 统计数字块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.10);
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            margin-bottom: 8px;
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-item .stat-label {
            font-size: 1rem;
            color: rgba(241, 245, 249, 0.7);
            font-weight: 500;
        }

        /* ===== 话题/帖子列表 ===== */
        .topic-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .topic-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: default;
        }
        .topic-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--border);
        }
        .topic-item .topic-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
        }
        .topic-item .topic-icon.t1 {
            background: linear-gradient(135deg, #3b82f6, #06b6d4);
        }
        .topic-item .topic-icon.t2 {
            background: linear-gradient(135deg, #f59e0b, #ef4444);
        }
        .topic-item .topic-icon.t3 {
            background: linear-gradient(135deg, #10b981, #3b82f6);
        }
        .topic-item .topic-icon.t4 {
            background: linear-gradient(135deg, #8b5cf6, #ec4899);
        }
        .topic-item .topic-icon.t5 {
            background: linear-gradient(135deg, #f97316, #f59e0b);
        }
        .topic-item .topic-content {
            flex: 1;
            min-width: 0;
        }
        .topic-item .topic-content h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .topic-item .topic-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .topic-item .topic-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .topic-item .topic-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== 用户风采 ===== */
        .member-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .member-card {
            text-align: center;
            padding: 32px 16px 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .member-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .member-card .avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 16px;
            border: 3px solid var(--primary-bg);
        }
        .member-card h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .member-card .member-title {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .member-card .member-stats {
            display: flex;
            justify-content: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .member-card .member-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark2));
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(241, 245, 249, 0.8);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            box-shadow: 0 4px 24px rgba(6, 182, 212, 0.35);
        }
        .cta-section .btn-secondary {
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: none;
        }
        .cta-section .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.20);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            font-family: var(--font-sans);
        }
        .faq-question:hover {
            background: var(--bg-body);
        }
        .faq-question:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: -3px;
        }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            font-size: 1.2rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(241, 245, 249, 0.8);
            padding: 64px 0 32px;
        }
        .site-footer .site-logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .site-logo:hover {
            color: #fff;
        }
        .site-footer p {
            color: rgba(241, 245, 249, 0.6);
            font-size: 0.95rem;
            max-width: 360px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(241, 245, 249, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(241, 245, 249, 0.4);
        }
        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            color: rgba(241, 245, 249, 0.4);
            font-size: 1.2rem;
            transition: color var(--transition);
        }
        .footer-social a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .member-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 60px;
                --spacing-block: 40px;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.10);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition);
                border-bottom: 1px solid var(--border);
                pointer-events: none;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .main-nav .nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }

            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .page-hero {
                padding: 60px 0 70px;
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }

            .member-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .topic-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }

            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .page-hero .btn {
                width: 100%;
                justify-content: center;
            }
            .member-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }