/* roulang page: index */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #0F1524;
            --card-bg: #111A2E;
            --card-hover: #1A2440;
            --accent-purple: #8B5CF6;
            --accent-fuchsia: #D946EF;
            --accent-cyan: #22D3EE;
            --accent-amber: #F59E0B;
            --text-primary: #E5E7EB;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --border-light: rgba(255,255,255,0.06);
            --border-accent: rgba(139,92,246,0.4);
            --radius-card: 16px;
            --radius-btn: 10px;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: color 0.3s ease; }
        button { cursor: pointer; font-family: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        /* 导航玻璃效果 */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 100;
            background: rgba(10,14,23,0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(10,14,23,0.95);
            box-shadow: 0 4px 30px rgba(0,0,0,0.4);
        }
        .nav-link {
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 4px;
            position: relative;
            transition: color 0.3s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0; left: 50%;
            transform: translateX(-50%);
            width: 0; height: 2px;
            background: linear-gradient(90deg, #8B5CF6, #22D3EE);
            border-radius: 2px;
            transition: width 0.3s ease;
        }
        .nav-link:hover { color: #fff; }
        .nav-link:hover::after { width: 100%; }
        .nav-link.active { color: #fff; }
        .nav-link.active::after { width: 100%; }

        /* Hero 区域 */
        .hero-section {
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(rgba(10,14,23,0.82), rgba(10,14,23,0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%; right: -10%;
            width: 600px; height: 600px;
            background: radial-gradient(circle, rgba(139,92,246,0.25), transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -15%; left: -5%;
            width: 500px; height: 500px;
            background: radial-gradient(circle, rgba(34,211,238,0.12), transparent 70%);
            pointer-events: none;
        }
        .hero-gradient-text {
            background: linear-gradient(135deg, #8B5CF6, #D946EF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        /* 倒计时 */
        .countdown-wrap {
            border: 1px solid rgba(245,158,11,0.5);
            border-radius: 16px;
            background: rgba(17,26,46,0.6);
            backdrop-filter: blur(8px);
        }
        .countdown-number {
            font-family: "JetBrains Mono", "Fira Code", monospace;
            color: var(--accent-cyan);
            background: rgba(10,14,23,0.6);
            border-radius: 12px;
            min-width: 72px;
            text-align: center;
            padding: 12px 8px;
            font-size: 28px;
            font-weight: 700;
        }

        /* 卖点卡片 */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all 0.4s ease;
            height: 100%;
        }
        .feature-card:hover {
            background: var(--card-hover);
            border-color: var(--border-accent);
            transform: translateY(-4px);
            box-shadow: 0 0 24px rgba(139,92,246,0.25);
        }
        .feature-icon {
            width: 48px; height: 48px;
            border-radius: 12px;
            background: rgba(139,92,246,0.2);
            display: flex; align-items: center; justify-content: center;
            font-size: 22px;
            color: var(--accent-purple);
        }
        .feature-link {
            color: var(--accent-cyan);
            font-size: 14px;
            transition: padding-left 0.3s ease;
        }
        .feature-link:hover { padding-left: 6px; }

        /* 图墙 */
        .gallery-card {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            aspect-ratio: 16/9;
        }
        .gallery-card img {
            width: 100%; height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .gallery-card:hover img { transform: scale(1.05); }
        .gallery-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10,14,23,0.85), transparent);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 20px;
        }
        .gallery-badge {
            position: absolute;
            top: 12px; left: 12px;
            background: rgba(245,158,11,0.9);
            color: #0A0E17;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
        }
        .gallery-link {
            opacity: 0;
            transform: translateY(10px);
            transition: all 0.4s ease;
        }
        .gallery-card:hover .gallery-link { opacity: 1; transform: translateY(0); }

        /* CTA 横幅 */
        .cta-banner {
            background: linear-gradient(135deg, #7C3AED, #A855F7, #22D3EE);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(circle at 20% 50%, transparent 0%, rgba(10,14,23,0.3) 100%);
        }

        /* FAQ */
        .faq-item {
            background: #111A2E;
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 12px;
            margin-bottom: 12px;
            transition: border-color 0.3s ease;
            overflow: hidden;
        }
        .faq-item.active { border-color: rgba(139,92,246,0.5); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            user-select: none;
        }
        .faq-icon {
            width: 24px; height: 24px;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px;
            color: var(--accent-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon { transform: rotate(45deg); color: var(--accent-purple); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer { max-height: 300px; padding-bottom: 20px; }

        /* 文章卡片 */
        .post-card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.4s ease;
        }
        .post-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-accent);
            box-shadow: 0 0 24px rgba(139,92,246,0.25);
        }
        .post-thumb {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(90deg, #8B5CF6, #D946EF);
            color: #fff;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 10px;
            transition: all 0.3s ease;
            border: none;
            font-size: 16px;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(139,92,246,0.4);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 500;
            padding: 14px 32px;
            border-radius: 10px;
            border: 1px solid rgba(255,255,255,0.6);
            transition: all 0.3s ease;
            font-size: 16px;
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-2px);
            border-color: #fff;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255,255,255,0.06);
            position: relative;
        }
        .site-footer::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, #8B5CF6, #22D3EE, transparent);
        }
        .footer-link {
            color: var(--text-muted);
            font-size: 14px;
            transition: color 0.3s ease;
            display: inline-block;
            padding: 4px 0;
        }
        .footer-link:hover { color: #fff; text-decoration: underline; }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(10,14,23,0.97);
            backdrop-filter: blur(16px);
            z-index: 200;
            display: none;
            flex-direction: column;
            padding: 100px 40px 40px;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu a {
            font-size: 18px;
            letter-spacing: 1px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            color: var(--text-muted);
        }
        .mobile-menu a:hover, .mobile-menu a.active { color: #fff; }
        .mobile-close {
            position: absolute;
            top: 20px; right: 24px;
            width: 44px; height: 44px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px;
            color: #fff;
            border: 1px solid rgba(255,255,255,0.15);
        }

        /* 资讯空态 */
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-dim);
            font-size: 15px;
            border: 1px dashed rgba(255,255,255,0.12);
            border-radius: 16px;
            background: rgba(255,255,255,0.02);
        }

        /* 分隔线 */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(139,92,246,0.3), rgba(34,211,238,0.3), transparent);
        }

        /* 动画 */
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        .float-animate { animation: float 6s ease-in-out infinite; }

        /* 响应式细节 */
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            .hero-section { min-height: 70vh; }
            .countdown-number { min-width: 56px; font-size: 22px; padding: 8px 4px; }
            .feature-card { padding: 20px 16px; }
            .faq-question { padding: 16px 18px; font-size: 15px; }
            .faq-answer { padding-left: 18px; padding-right: 18px; }
        }
        @media (max-width: 520px) {
            .countdown-number { min-width: 50px; font-size: 18px; }
            .btn-primary, .btn-outline { padding: 12px 20px; font-size: 15px; width: 100%; justify-content: center; }
        }

        /* 信任点 */
        .trust-point {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 13px;
        }
        .trust-point::before {
            content: '•';
            color: var(--accent-purple);
            font-size: 16px;
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0A0E17;
            --bg-panel: #111A2E;
            --bg-panel-hover: #1A2440;
            --accent-purple: #8B5CF6;
            --accent-pink: #D946EF;
            --accent-cyan: #22D3EE;
            --accent-gold: #F59E0B;
            --text-primary: #E5E7EB;
            --text-muted: #94A3B8;
            --text-weak: #64748B;
            --border-default: rgba(255, 255, 255, 0.06);
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 0 24px rgba(139, 92, 246, 0.25);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-deep);
            background-image: radial-gradient(ellipse at top left, rgba(139, 92, 246, 0.12), transparent 40%), radial-gradient(ellipse at bottom right, rgba(34, 211, 238, 0.08), transparent 40%);
            color: var(--text-primary);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .nav-link {
            position: relative;
            color: #94A3B8;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 2px;
            transition: color 0.3s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, #8B5CF6, #22D3EE);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

        .nav-link:hover {
            color: #FFFFFF;
        }

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

        .nav-link.active {
            color: #FFFFFF;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #8B5CF6, #D946EF);
            color: #FFFFFF;
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 10px 24px;
            font-size: 14px;
            box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35);
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(139, 92, 246, 0.5);
            filter: brightness(1.1);
        }

        .btn-primary:active {
            transform: translateY(-1px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-btn);
            font-weight: 500;
            padding: 10px 24px;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            border-color: #8B5CF6;
            background: rgba(139, 92, 246, 0.15);
            transform: translateY(-2px);
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 14, 23, 0.97);
            z-index: 2000;
            display: flex;
            flex-direction: column;
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu a {
            font-size: 18px;
            color: #E5E7EB;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mobile-menu a i {
            width: 24px;
            color: #8B5CF6;
        }

        .mobile-menu a:hover {
            color: #22D3EE;
        }

        .mobile-close {
            position: absolute;
            top: 20px;
            right: 24px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: #FFFFFF;
            font-size: 20px;
            transition: background 0.3s ease;
        }

        .mobile-close:hover {
            background: rgba(139, 92, 246, 0.3);
        }

        /* ===== Hero ===== */
        .page-hero {
            min-height: 42vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            padding-top: 76px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(10, 14, 23, 0.7) 0%, rgba(10, 14, 23, 0.5) 50%, rgba(10, 14, 23, 0.9) 100%);
        }

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

        .page-hero h1 {
            font-size: clamp(38px, 6vw, 56px);
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .page-hero h1 .highlight {
            background: linear-gradient(135deg, #8B5CF6, #22D3EE);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .page-hero p {
            font-size: 16px;
            color: #94A3B8;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            color: #64748B;
            margin-bottom: 24px;
            margin-top: 12px;
        }

        .page-hero .breadcrumb a {
            color: #94A3B8;
            transition: color 0.3s ease;
        }

        .page-hero .breadcrumb a:hover {
            color: #22D3EE;
        }

        .page-hero .breadcrumb i {
            font-size: 12px;
            color: #64748B;
        }

        /* ===== 板块 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background-color: #0F1524;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: #22D3EE;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 8px;
            background: rgba(34, 211, 238, 0.1);
            padding: 4px 16px;
            border-radius: 999px;
            border: 1px solid rgba(34, 211, 238, 0.2);
        }

        .section-header h2 {
            font-size: clamp(26px, 4vw, 34px);
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header h2 .accent-text {
            background: linear-gradient(135deg, #8B5CF6, #22D3EE);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .section-header p {
            font-size: 15px;
            color: #94A3B8;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-lead {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 48px;
            color: #94A3B8;
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== 玩法概览卡片 ===== */
        .feature-card {
            background: var(--bg-panel);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            transition: all 0.4s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #8B5CF6, #22D3EE);
            opacity: 0;
            transition: opacity 0.4s ease;
        }

        .feature-card:hover {
            background: var(--bg-panel-hover);
            border-color: rgba(139, 92, 246, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

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

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(139, 92, 246, 0.2);
            color: #8B5CF6;
            font-size: 20px;
            margin-bottom: 20px;
            border: 1px solid rgba(139, 92, 246, 0.2);
            transition: all 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, #8B5CF6, #D946EF);
            color: #FFFFFF;
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .feature-card .link-more {
            font-size: 14px;
            color: #22D3EE;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }

        .feature-card .link-more:hover {
            gap: 10px;
        }

        /* ===== 玩法流程 ===== */
        .step-item {
            position: relative;
            background: var(--bg-panel);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all 0.3s ease;
            text-align: center;
            height: 100%;
        }

        .step-item:hover {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.15);
            transform: translateY(-4px);
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #8B5CF6, #D946EF);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
        }

        .step-arrow {
            position: absolute;
            right: -20px;
            top: 50%;
            transform: translateY(-50%);
            color: #22D3EE;
            font-size: 18px;
            z-index: 2;
            display: none;
        }

        @media (min-width: 768px) {
            .step-arrow {
                display: block;
            }
        }

        /* ===== 图文对比区 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-panel);
            border: 1px solid var(--border-default);
            border-radius: 20px;
            padding: 40px 32px;
            margin-bottom: 32px;
            transition: border-color 0.3s ease;
        }

        .split-block:hover {
            border-color: rgba(139, 92, 246, 0.3);
        }

        @media (min-width: 1024px) {
            .split-block {
                grid-template-columns: 1fr 1fr;
                padding: 48px;
            }
        }

        .split-block.reverse .split-image {
            order: 2;
        }

        .split-block.reverse .split-content {
            order: 1;
        }

        .split-image {
            border-radius: 16px;
            overflow: hidden;
            position: relative;
        }

        .split-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .split-image:hover img {
            transform: scale(1.05);
        }

        .split-image .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(245, 158, 11, 0.9);
            color: #0A0E17;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .split-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .split-content p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.8;
            margin-bottom: 8px;
        }

        .split-content ul {
            list-style: none;
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .split-content ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: #94A3B8;
        }

        .split-content ul li i {
            color: #22D3EE;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-panel);
            border: 1px solid var(--border-default);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(139, 92, 246, 0.5);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: transparent;
            color: #E5E7EB;
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            gap: 16px;
        }

        .faq-question .faq-icon {
            transition: transform 0.3s ease;
            color: #8B5CF6;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: #22D3EE;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-banner {
            background: linear-gradient(135deg, #7C3AED, #A855F7, #22D3EE);
            border-radius: 20px;
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
        }

        .cta-banner .container {
            position: relative;
            z-index: 2;
        }

        .cta-banner h2 {
            font-size: clamp(28px, 4vw, 36px);
            color: #FFFFFF;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-banner .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #0A0E17;
            color: #22D3EE;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 15px;
            transition: all 0.3s ease;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }

        .cta-banner .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            background: #1A2440;
        }

        .cta-banner .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.6);
            font-weight: 500;
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 15px;
            margin-left: 12px;
            transition: all 0.3s ease;
        }

        .cta-banner .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, #8B5CF6, #22D3EE, transparent);
        }

        .site-footer h4 {
            color: #E5E7EB;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .site-footer .footer-link {
            color: var(--text-muted);
            font-size: 14px;
            transition: color 0.3s ease;
            line-height: 1.6;
        }

        .site-footer .footer-link:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }

        .site-footer .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            margin-top: 24px;
            text-align: center;
            color: var(--text-weak);
            font-size: 13px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 60px 0;
            }

            .page-hero {
                background-attachment: scroll;
            }

            .page-hero h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .page-hero {
                min-height: 50vh;
                padding-top: 76px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .split-block,
            .split-block.reverse .split-image {
                order: 0;
            }

            .cta-banner {
                padding: 40px 24px;
            }

            .cta-banner .btn-cta-outline {
                margin-left: 0;
                margin-top: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-hero {
                min-height: 55vh;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .page-hero p {
                font-size: 14px;
            }

            .section-header h2 {
                font-size: 24px;
            }
        }

/* roulang page: article */
:root {
        --bg-primary: #0A0E17;
        --bg-secondary: #0F1524;
        --bg-card: #111A2E;
        --bg-card-hover: #1A2440;
        --accent-purple: #8B5CF6;
        --accent-pink: #D946EF;
        --accent-cyan: #22D3EE;
        --accent-gold: #F59E0B;
        --text-primary: #E5E7EB;
        --text-secondary: #94A3B8;
        --text-muted: #64748B;
        --border-color: rgba(255,255,255,0.06);
        --border-hover: rgba(139,92,246,0.4);
        --radius-card: 16px;
        --radius-btn: 10px;
        --radius-pill: 999px;
        --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
        --shadow-glow: 0 0 24px rgba(139,92,246,0.25);
        --gap-section: 80px;
        --gap-section-mobile: 40px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
        font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        background: var(--bg-primary);
        color: var(--text-primary);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
    }
    .container {
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    a { text-decoration: none; color: inherit; transition: all .25s ease; }
    img { max-width: 100%; display: block; }
    button { font-family: inherit; cursor: pointer; border: none; background: none; }

    /* ==== Header / Nav ==== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(10,14,23,0.5);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255,255,255,0.08);
        transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
    }
    .site-header.scrolled {
        background: rgba(10,14,23,0.95);
        backdrop-filter: blur(12px);
        box-shadow: 0 4px 30px rgba(0,0,0,0.4);
        border-bottom-color: rgba(139,92,246,0.15);
    }
    .nav-link {
        color: var(--text-secondary);
        font-size: 15px;
        font-weight: 500;
        padding: 8px 2px;
        position: relative;
        transition: color .25s ease;
        letter-spacing: 0.02em;
    }
    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
        border-radius: 2px;
        transition: width .3s ease;
    }
    .nav-link:hover { color: #fff; }
    .nav-link:hover::after { width: 100%; }
    .nav-link.active { color: #fff; }
    .nav-link.active::after { width: 100%; }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
        color: #fff;
        font-size: 14px;
        font-weight: 600;
        border-radius: var(--radius-btn);
        padding: 10px 24px;
        box-shadow: 0 4px 20px rgba(139,92,246,0.3);
        transition: all .3s ease;
        border: none;
        white-space: nowrap;
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 30px rgba(139,92,246,0.5);
        filter: brightness(1.1);
    }
    .btn-primary:active { transform: translateY(-1px); }
    .btn-ghost {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: #fff;
        font-size: 14px;
        font-weight: 500;
        border-radius: var(--radius-btn);
        padding: 10px 24px;
        border: 1px solid rgba(255,255,255,0.25);
        transition: all .3s ease;
        white-space: nowrap;
    }
    .btn-ghost:hover {
        background: rgba(255,255,255,0.06);
        border-color: rgba(139,92,246,0.6);
        transform: translateY(-2px);
    }

    /* Mobile menu */
    .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10,14,23,0.97);
        z-index: 2000;
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 12px;
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
        color: #fff;
        font-size: 18px;
        font-weight: 500;
        padding: 14px 24px;
        letter-spacing: 1px;
        border-radius: 8px;
        width: 80%;
        max-width: 320px;
        text-align: center;
        transition: background .2s ease;
    }
    .mobile-menu a:hover { background: rgba(139,92,246,0.15); }
    .mobile-menu a.active { background: rgba(139,92,246,0.2); color: var(--accent-cyan); }
    .mobile-menu-close {
        position: absolute;
        top: 24px;
        right: 24px;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 24px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        transition: all .3s ease;
    }
    .mobile-menu-close:hover { background: rgba(255,255,255,0.12); transform: rotate(90deg); }

    /* ==== Article Hero ==== */
    .article-hero {
        position: relative;
        min-height: 50vh;
        display: flex;
        align-items: flex-end;
        padding-top: 160px;
        padding-bottom: 48px;
        background: linear-gradient(180deg, rgba(10,14,23,0.6), var(--bg-primary)),
                    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    }
    .article-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background:
            radial-gradient(ellipse at 20% 30%, rgba(139,92,246,0.25), transparent 50%),
            radial-gradient(ellipse at 80% 70%, rgba(34,211,238,0.12), transparent 40%),
            radial-gradient(circle at 50% 50%, rgba(10,14,23,0.2) 0%, var(--bg-primary) 100%);
        pointer-events: none;
    }
    .article-hero-grid {
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
        background-size: 56px 56px;
        pointer-events: none;
    }
    .article-hero .container { position: relative; z-index: 2; }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-secondary);
        margin-bottom: 20px;
    }
    .breadcrumb a { color: var(--text-secondary); transition: color .2s ease; }
    .breadcrumb a:hover { color: var(--accent-cyan); }
    .breadcrumb .sep { color: var(--text-muted); }
    .breadcrumb .current { color: var(--text-primary); }

    .article-hero h1 {
        font-size: clamp(28px, 4.5vw, 44px);
        font-weight: 800;
        color: #fff;
        line-height: 1.25;
        max-width: 800px;
        margin-bottom: 20px;
        text-shadow: 0 2px 20px rgba(0,0,0,0.3);
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        color: var(--text-secondary);
        margin-bottom: 8px;
    }
    .article-meta .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 4px 12px;
        background: rgba(255,255,255,0.06);
        border-radius: var(--radius-pill);
        backdrop-filter: blur(6px);
        font-size: 13px;
    }
    .article-meta .meta-item i { color: var(--accent-purple); font-size: 12px; }
    .article-meta .sep { color: var(--text-muted); margin: 0 2px; }

    /* ==== Article Main ==== */
    .article-main {
        padding: 48px 0 0;
        background: var(--bg-primary);
    }
    .article-content-wrap {
        max-width: 760px;
        margin: 0 auto;
    }
    .article-content {
        font-size: 16px;
        line-height: 1.8;
        color: var(--text-secondary);
    }
    .article-content > * + * { margin-top: 20px; }
    .article-content h2 {
        font-size: 26px;
        font-weight: 700;
        color: #fff;
        line-height: 1.4;
        margin-top: 40px;
        padding-bottom: 12px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .article-content h3 {
        font-size: 20px;
        font-weight: 600;
        color: #fff;
        line-height: 1.4;
        margin-top: 32px;
    }
    .article-content h4 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-primary);
        margin-top: 24px;
    }
    .article-content p {
        font-size: 16px;
        line-height: 1.8;
        color: var(--text-secondary);
    }
    .article-content a {
        color: var(--accent-cyan);
        border-bottom: 1px solid rgba(34,211,238,0.3);
        transition: border-color .2s ease;
    }
    .article-content a:hover { border-bottom-color: var(--accent-cyan); }
    .article-content img {
        border-radius: 12px;
        max-width: 100%;
        height: auto;
        margin: 24px 0;
        box-shadow: var(--shadow-card);
        border: 1px solid rgba(255,255,255,0.06);
    }
    .article-content blockquote {
        border-left: 3px solid var(--accent-purple);
        background: rgba(139,92,246,0.08);
        padding: 16px 20px;
        border-radius: 0 12px 12px 0;
        font-style: normal;
        color: var(--text-secondary);
        margin: 24px 0;
    }
    .article-content blockquote p { color: var(--text-secondary); margin: 0; }
    .article-content ul, .article-content ol {
        padding-left: 24px;
        margin: 16px 0;
        color: var(--text-secondary);
    }
    .article-content li { margin-bottom: 8px; line-height: 1.7; }
    .article-content li::marker { color: var(--accent-purple); }
    .article-content pre {
        background: #0D1520;
        border: 1px solid rgba(255,255,255,0.08);
        border-radius: 12px;
        padding: 20px;
        overflow-x: auto;
        font-family: "JetBrains Mono", "Fira Code", monospace;
        font-size: 14px;
        line-height: 1.7;
        color: #E5E7EB;
        margin: 24px 0;
    }
    .article-content code {
        background: rgba(139,92,246,0.15);
        padding: 2px 7px;
        border-radius: 4px;
        font-family: "JetBrains Mono", monospace;
        font-size: 13px;
        color: var(--accent-cyan);
    }
    .article-content pre code {
        background: transparent;
        padding: 0;
        color: inherit;
    }
    .article-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 24px 0;
        font-size: 14px;
        border-radius: 12px;
        overflow: hidden;
    }
    .article-content th {
        background: var(--bg-card);
        color: #fff;
        font-weight: 600;
        padding: 12px 16px;
        text-align: left;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .article-content td {
        padding: 12px 16px;
        border-bottom: 1px solid rgba(255,255,255,0.04);
        color: var(--text-secondary);
    }
    .article-content tr:last-child td { border-bottom: none; }

    /* Not found */
    .not-found {
        text-align: center;
        padding: 64px 24px;
        background: var(--bg-card);
        border-radius: var(--radius-card);
        border: 1px solid var(--border-color);
        margin: 48px auto;
        max-width: 560px;
    }
    .not-found .icon {
        width: 72px;
        height: 72px;
        border-radius: 50%;
        background: rgba(139,92,246,0.12);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 24px;
        font-size: 28px;
        color: var(--accent-purple);
    }
    .not-found h3 {
        font-size: 22px;
        color: #fff;
        margin-bottom: 12px;
    }
    .not-found p {
        color: var(--text-secondary);
        font-size: 14px;
        margin-bottom: 28px;
    }

    /* ==== Tags ==== */
    .article-tags {
        padding: 48px 0 24px;
        background: var(--bg-primary);
    }
    .tags-wrap {
        max-width: 760px;
        margin: 0 auto;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px;
    }
    .tag-label {
        font-size: 13px;
        color: var(--text-muted);
        margin-right: 4px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .tag-item {
        display: inline-block;
        padding: 5px 14px;
        background: rgba(139,92,246,0.1);
        border: 1px solid rgba(139,92,246,0.2);
        border-radius: var(--radius-pill);
        font-size: 13px;
        color: var(--text-secondary);
        transition: all .25s ease;
    }
    .tag-item:hover {
        background: rgba(139,92,246,0.2);
        color: #fff;
        border-color: rgba(139,92,246,0.5);
    }

    /* ==== Pager ==== */
    .article-pager {
        padding: 32px 0 48px;
        background: var(--bg-primary);
    }
    .pager-grid {
        max-width: 760px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .pager-btn {
        display: block;
        padding: 20px 24px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-card);
        transition: all .3s ease;
    }
    .pager-btn:hover {
        background: var(--bg-card-hover);
        border-color: var(--border-hover);
        transform: translateY(-2px);
        box-shadow: var(--shadow-glow);
    }
    .pager-btn.right { text-align: right; }
    .pager-label {
        display: block;
        font-size: 12px;
        color: var(--text-muted);
        margin-bottom: 6px;
        letter-spacing: 1px;
        text-transform: uppercase;
    }
    .pager-title {
        display: block;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.5;
    }
    .pager-btn:hover .pager-title { color: var(--accent-cyan); }

    /* ==== Related ==== */
    .related-section {
        padding: 64px 0 80px;
        background: var(--bg-secondary);
        border-top: 1px solid var(--border-color);
    }
    .section-header {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 36px;
    }
    .section-header h2 {
        font-size: 28px;
        font-weight: 700;
        color: #fff;
        line-height: 1.3;
    }
    .section-header .sub {
        color: var(--text-secondary);
        font-size: 14px;
    }
    .related-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-card);
        overflow: hidden;
        transition: all .35s ease;
    }
    .related-card:hover {
        transform: translateY(-4px);
        border-color: var(--border-hover);
        box-shadow: var(--shadow-glow);
    }
    .related-card .thumb {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16/9;
    }
    .related-card .thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease;
    }
    .related-card:hover .thumb img { transform: scale(1.05); }
    .related-card .thumb::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(10,14,23,0.85), transparent 60%);
        opacity: 0.6;
        transition: opacity .3s ease;
    }
    .related-card:hover .thumb::after { opacity: 0.3; }
    .related-card .badge {
        position: absolute;
        top: 12px;
        left: 12px;
        z-index: 2;
        display: inline-block;
        padding: 4px 12px;
        background: rgba(245,158,11,0.9);
        color: #0A0E17;
        font-size: 12px;
        font-weight: 600;
        border-radius: var(--radius-pill);
        letter-spacing: 0.5px;
    }
    .related-card .card-body { padding: 20px 20px 24px; }
    .related-card .card-body h3 {
        font-size: 17px;
        font-weight: 600;
        color: #fff;
        line-height: 1.4;
        margin-bottom: 8px;
        transition: color .25s ease;
    }
    .related-card .card-body h3:hover { color: var(--accent-cyan); }
    .related-card .card-body p {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.6;
        margin-bottom: 14px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body .date {
        font-size: 12px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 6px;
    }

    /* ==== CTA Banner ==== */
    .cta-banner {
        padding: 80px 0;
        background: linear-gradient(135deg, #7C3AED, #A855F7, #22D3EE);
        position: relative;
        overflow: hidden;
    }
    .cta-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
        background-size: 48px 48px;
        pointer-events: none;
    }
    .cta-banner .container { position: relative; z-index: 2; text-align: center; }
    .cta-banner h2 {
        font-size: clamp(24px, 4vw, 36px);
        font-weight: 700;
        color: #fff;
        margin-bottom: 16px;
        text-shadow: 0 2px 16px rgba(0,0,0,0.2);
    }
    .cta-banner p {
        font-size: 16px;
        color: rgba(255,255,255,0.8);
        max-width: 560px;
        margin: 0 auto 32px;
        line-height: 1.7;
    }
    .cta-banner .btn-light {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: #0A0E17;
        color: var(--accent-cyan);
        padding: 12px 32px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 600;
        transition: all .3s ease;
        border: 2px solid transparent;
    }
    .cta-banner .btn-light:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 30px rgba(255,255,255,0.2);
        border-color: var(--accent-cyan);
    }
    .cta-banner .btn-outline-light {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: #fff;
        padding: 12px 32px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 500;
        border: 1px solid rgba(255,255,255,0.6);
        transition: all .3s ease;
        margin-left: 12px;
    }
    .cta-banner .btn-outline-light:hover {
        background: rgba(255,255,255,0.1);
        border-color: #fff;
        transform: translateY(-2px);
    }

    /* ==== Footer ==== */
    .site-footer {
        background: var(--bg-primary);
        border-top: 1px solid rgba(255,255,255,0.06);
        position: relative;
    }
    .site-footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan), transparent);
    }
    .footer-link {
        font-size: 14px;
        color: var(--text-secondary);
        transition: all .2s ease;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .footer-link:hover {
        color: #fff;
        padding-left: 4px;
    }
    .site-footer h4 {
        color: #fff;
        font-weight: 600;
        font-size: 15px;
        letter-spacing: 0.5px;
    }

    /* ==== Responsive ==== */
    @media (max-width: 1024px) {
        .nav-desktop { display: none; }
        .btn-desktop { display: none; }
        .article-hero { min-height: 42vh; padding-top: 140px; }
        .related-grid { grid-template-columns: repeat(2, 1fr) !important; }
    }
    @media (max-width: 768px) {
        .section-header h2 { font-size: 22px; }
        .article-hero { min-height: 40vh; padding-top: 130px; }
        .article-hero h1 { font-size: 26px; }
        .article-meta .meta-item { font-size: 12px; padding: 4px 10px; }
        .article-content h2 { font-size: 22px; }
        .article-content h3 { font-size: 18px; }
        .cta-banner { padding: 56px 0; }
        .cta-banner .btn-outline-light { margin-left: 0; margin-top: 12px; }
        .pager-grid { grid-template-columns: 1fr; }
        .related-grid { grid-template-columns: 1fr !important; }
        .section-header { flex-direction: column; align-items: flex-start; gap: 8px; }
    }
    @media (max-width: 520px) {
        .container { padding-left: 16px; padding-right: 16px; }
        .article-hero { min-height: 36vh; padding-top: 120px; }
        .breadcrumb { font-size: 12px; }
        .article-meta { flex-direction: row; flex-wrap: wrap; gap: 6px; }
        .article-meta .meta-item { padding: 3px 8px; font-size: 11px; }
        .article-content { font-size: 15px; }
        .article-content h2 { font-size: 20px; }
        .article-content blockquote { padding: 12px 16px; }
        .pager-btn { padding: 16px; }
        .pager-title { font-size: 14px; }
    }

    /* Grid helpers */
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    @media (max-width: 1024px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 768px) { .grid-3 { grid-template-columns: 1fr; } }

    .text-gradient {
        background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #0F1524;
            --bg-card: #111A2E;
            --bg-card-hover: #1A2440;
            --accent-purple: #8B5CF6;
            --accent-pink: #D946EF;
            --accent-cyan: #22D3EE;
            --accent-amber: #F59E0B;
            --text-primary: #E5E7EB;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(139, 92, 246, 0.4);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 0 24px rgba(139, 92, 246, 0.25);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 999px;
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "JetBrains Mono", "Fira Code", monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container-page {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom-color: rgba(139, 92, 246, 0.18);
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.35);
        }

        .nav-link {
            position: relative;
            color: #94A3B8;
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            letter-spacing: 0.3px;
            transition: color .2s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
            transition: width .3s ease;
        }

        .nav-link:hover {
            color: #ffffff;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-link.active {
            color: #ffffff;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #8B5CF6, #D946EF);
            color: #ffffff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35);
            transition: all .25s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(139, 92, 246, 0.45);
            filter: brightness(1.1);
        }

        .btn-primary:active {
            transform: translateY(0px) scale(0.98);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #ffffff;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            transition: all .25s ease;
        }

        .btn-outline:hover {
            border-color: var(--accent-purple);
            background: rgba(139, 92, 246, 0.12);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0px) scale(0.98);
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: 0;
            width: 100%;
            height: 100vh;
            background: rgba(10, 14, 23, 0.97);
            backdrop-filter: blur(16px);
            z-index: 1100;
            display: flex;
            flex-direction: column;
            padding: 24px;
            transform: translateX(100%);
            transition: transform .3s ease;
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu a {
            font-size: 18px;
            font-weight: 500;
            letter-spacing: 1px;
            color: var(--text-secondary);
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: color .2s ease;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #ffffff;
        }

        .mobile-menu-close {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            align-self: flex-end;
            margin-bottom: 12px;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            min-height: 40vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background-image: linear-gradient(to right, rgba(10, 14, 23, 0.7), rgba(10, 14, 23, 0.4)),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 130px 24px 60px;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background: linear-gradient(to top, var(--bg-primary), transparent);
            pointer-events: none;
        }

        .hero-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(139, 92, 246, 0.15);
            border: 1px solid rgba(139, 92, 246, 0.3);
            color: #C4B5FD;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 1px;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 2px;
            line-height: 1.2;
        }

        .hero-subtitle {
            max-width: 640px;
            margin: 16px auto 28px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }

        @media (max-width: 640px) {
            .section-block {
                padding: 40px 0;
            }
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 700;
            color: #ffffff;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 720px;
            line-height: 1.8;
        }

        .section-head {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 40px;
        }

        .link-more {
            color: var(--accent-cyan);
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s ease;
        }

        .link-more:hover {
            gap: 10px;
            color: #67E8F9;
        }

        /* ===== Guide Direction Cards ===== */
        .direction-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .direction-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
            opacity: 0;
            transition: opacity .3s ease;
        }

        .direction-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

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

        .direction-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #D8B4FE;
            background: rgba(139, 92, 246, 0.18);
            margin-bottom: 20px;
        }

        .direction-icon.cyan {
            color: #67E8F9;
            background: rgba(34, 211, 238, 0.12);
        }

        .direction-icon.pink {
            color: #F0ABFC;
            background: rgba(217, 70, 239, 0.12);
        }

        .direction-icon.amber {
            color: #FCD34D;
            background: rgba(245, 158, 11, 0.12);
        }

        .direction-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }

        .direction-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Featured Guides ===== */
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 0 24px rgba(139, 92, 246, 0.2);
        }

        .guide-card .thumb {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .guide-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .guide-card:hover .thumb img {
            transform: scale(1.05);
        }

        .guide-card .thumb .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(245, 158, 11, 0.9);
            color: #0A0E17;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .guide-card .thumb .badge.purple {
            background: rgba(139, 92, 246, 0.9);
            color: #fff;
        }

        .guide-card .thumb .badge.cyan {
            background: rgba(34, 211, 238, 0.9);
            color: #0A0E17;
        }

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

        .guide-card .body h3 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            line-height: 1.5;
            margin-bottom: 10px;
            transition: color .2s ease;
        }

        .guide-card:hover .body h3 {
            color: #C4B5FD;
        }

        .guide-card .body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .guide-card .body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .guide-card .body .link-more {
            margin-top: 10px;
        }

        .guide-feature-card {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(34, 211, 238, 0.08));
            border: 1px solid rgba(139, 92, 246, 0.25);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .guide-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 0 30px rgba(139, 92, 246, 0.2);
        }

        .guide-feature-card .thumb {
            height: 240px;
            overflow: hidden;
            position: relative;
        }

        .guide-feature-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .guide-feature-card:hover .thumb img {
            transform: scale(1.05);
        }

        .guide-feature-card .body {
            padding: 28px;
        }

        .guide-feature-card .body h3 {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }

        .guide-feature-card .body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== Process Steps ===== */
        .process-item {
            position: relative;
            padding: 28px 24px;
            background: rgba(17, 26, 46, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            transition: all .3s ease;
        }

        .process-item:hover {
            border-color: rgba(34, 211, 238, 0.3);
            background: rgba(17, 26, 46, 0.9);
            transform: translateY(-2px);
        }

        .process-step {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #8B5CF6, #22D3EE);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .process-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }

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

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

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            transition: all .3s ease;
        }

        .stat-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 40px;
            font-weight: 700;
            background: linear-gradient(135deg, #8B5CF6, #22D3EE);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color .3s ease;
        }

        .faq-item.open {
            border-color: rgba(139, 92, 246, 0.4);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            user-select: none;
        }

        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-purple);
            font-size: 16px;
            transition: transform .3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-purple);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-banner {
            position: relative;
            background: linear-gradient(135deg, #7C3AED, #A855F7, #22D3EE);
            border-radius: 20px;
            padding: 60px 40px;
            overflow: hidden;
            text-align: center;
        }

        @media (max-width: 640px) {
            .cta-banner {
                padding: 40px 20px;
            }
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(rgba(255,255,255,0.08) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .btn-dark-cyan {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #0A0E17;
            color: #22D3EE;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: var(--radius-btn);
            transition: all .25s ease;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .btn-dark-cyan:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
            color: #67E8F9;
        }

        .btn-white-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 30px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius-btn);
            transition: all .25s ease;
        }

        .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan), transparent);
        }

        .footer-link {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color .2s ease;
            display: inline-block;
        }

        .footer-link:hover {
            color: #ffffff;
            text-decoration: underline;
        }

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

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

        ::-webkit-scrollbar-thumb {
            background: rgba(139, 92, 246, 0.3);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(139, 92, 246, 0.5);
        }

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

/* roulang page: category4 */
:root {
            --bg-dark: #0A0E17;
            --bg-alt: #0F1524;
            --card-bg: #111A2E;
            --card-hover: #1A2440;
            --primary: #8B5CF6;
            --secondary: #D946EF;
            --accent: #22D3EE;
            --gold: #F59E0B;
            --text-main: #E5E7EB;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
            transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.95);
            border-bottom-color: rgba(139, 92, 246, 0.2);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .nav-link {
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.3px;
            padding: 8px 2px;
            position: relative;
            transition: color 0.3s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0);
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            color: #ffffff;
        }

        .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-link.active {
            color: #ffffff;
        }

        .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            box-shadow: 0 4px 16px rgba(139, 92, 246, 0.35);
            transition: all 0.3s ease;
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(139, 92, 246, 0.55);
            filter: brightness(1.1);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(139, 92, 246, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
            font-weight: 500;
            border-radius: var(--radius-btn);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(34, 211, 238, 0.15);
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(10, 14, 23, 0.97);
            backdrop-filter: blur(16px);
            z-index: 2000;
            display: none;
            flex-direction: column;
            padding: 24px;
        }

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

        .mobile-menu a.mobile-link {
            color: #fff;
            font-size: 18px;
            font-weight: 500;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            letter-spacing: 1px;
            transition: color 0.3s, padding-left 0.3s;
        }

        .mobile-menu a.mobile-link:hover {
            color: var(--accent);
            padding-left: 8px;
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 45vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), transparent 40%),
                        linear-gradient(315deg, rgba(34, 211, 238, 0.1), transparent 45%),
                        var(--bg-dark);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(139, 92, 246, 0.08), transparent 60%),
                        radial-gradient(ellipse at 80% 20%, rgba(34, 211, 238, 0.06), transparent 50%);
            pointer-events: none;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
        }

        .category-hero h1 {
            font-size: clamp(34px, 5vw, 52px);
            font-weight: 800;
            color: #fff;
            letter-spacing: 2px;
            margin-bottom: 20px;
        }

        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero p.hero-desc {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(139, 92, 246, 0.15);
            border: 1px solid rgba(139, 92, 246, 0.3);
            border-radius: 999px;
            color: var(--accent);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 90px 0;
        }

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

        .section-title {
            font-size: clamp(26px, 3vw, 32px);
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        /* ===== 高亮区卡片 ===== */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.4s ease;
        }

        .feature-card:hover {
            background: var(--card-hover);
            border-color: rgba(139, 92, 246, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 0 24px rgba(139, 92, 246, 0.25);
        }

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

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(139, 92, 246, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 20px;
            transition: all 0.4s ease;
        }

        .feature-card:hover .feature-icon {
            background: rgba(139, 92, 246, 0.35);
            color: #fff;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

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

        /* ===== 时间线 ===== */
        .timeline-wrap {
            position: relative;
            max-width: 860px;
            margin: 0 auto;
            padding-left: 30px;
        }

        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--accent), transparent);
            opacity: 0.4;
        }

        .timeline-item {
            position: relative;
            padding: 24px 0 24px 30px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 30px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--bg-alt);
            border: 2px solid var(--primary);
            box-shadow: 0 0 12px rgba(139, 92, 246, 0.5);
        }

        .timeline-item .tl-date {
            font-family: "JetBrains Mono", "Fira Code", monospace;
            font-size: 13px;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .timeline-item h4 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }

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

        /* ===== 公告卡片 ===== */
        .announce-card {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
        }

        .announce-card:hover {
            border-color: rgba(139, 92, 246, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 0 24px rgba(139, 92, 246, 0.2);
        }

        .announce-card .announce-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .announce-card .announce-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .announce-card:hover .announce-image img {
            transform: scale(1.05);
        }

        .announce-card .announce-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(245, 158, 11, 0.9);
            color: #0A0E17;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

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

        .announce-card .announce-date {
            font-size: 13px;
            color: var(--text-dim);
            font-family: "JetBrains Mono", "Fira Code", monospace;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .announce-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .announce-card .announce-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .announce-card .announce-link {
            margin-top: 16px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }

        .announce-card .announce-link:hover {
            gap: 10px;
        }

        /* ===== 订阅 CTA ===== */
        .newsletter-cta {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.9), rgba(168, 85, 247, 0.85), rgba(34, 211, 238, 0.8));
            border-radius: 20px;
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
        }

        .newsletter-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.1), transparent 40%),
                              radial-gradient(circle at 80% 80%, rgba(255,255,255,0.08), transparent 40%);
        }

        .newsletter-cta h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
        }

        .newsletter-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto 28px;
            position: relative;
        }

        .newsletter-input-wrap {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
        }

        .newsletter-input-wrap input {
            flex: 1;
            padding: 12px 18px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: all 0.3s ease;
        }

        .newsletter-input-wrap input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .newsletter-input-wrap input:focus {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.7);
        }

        .newsletter-input-wrap .btn-subscribe {
            padding: 12px 28px;
            border-radius: 10px;
            background: #0A0E17;
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
            border: none;
            transition: all 0.3s ease;
        }

        .newsletter-input-wrap .btn-subscribe:hover {
            background: #111A2E;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(139, 92, 246, 0.4);
        }

        .faq-question {
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            transition: color 0.3s ease;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease, background 0.3s ease;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(139, 92, 246, 0.3);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer p {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 信息快讯条 ===== */
        .ticker-bar {
            background: rgba(139, 92, 246, 0.08);
            border-top: 1px solid rgba(139, 92, 246, 0.15);
            border-bottom: 1px solid rgba(139, 92, 246, 0.15);
            padding: 14px 0;
            overflow: hidden;
            position: relative;
        }

        .ticker-inner {
            display: flex;
            gap: 48px;
            white-space: nowrap;
            animation: ticker 30s linear infinite;
        }

        .ticker-inner span {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 13px;
            letter-spacing: 0.5px;
        }

        .ticker-inner i {
            color: var(--gold);
            font-size: 8px;
        }

        @keyframes ticker {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* ===== 数据模块 ===== */
        .stat-block {
            text-align: center;
            padding: 24px 16px;
        }

        .stat-number {
            font-family: "JetBrains Mono", "Fira Code", monospace;
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== CTA ===== */
        .cta-banner {
            background: linear-gradient(135deg, #7C3AED, #A855F7, #22D3EE);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: 
                radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08), transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(255,255,255,0.06), transparent 45%);
        }

        .cta-banner h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 24px;
            position: relative;
        }

        .cta-banner .cta-buttons {
            position: relative;
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-banner .btn-dark {
            background: #0A0E17;
            color: var(--accent);
            padding: 12px 32px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
            border: none;
        }

        .cta-banner .btn-dark:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .cta-banner .btn-white-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.6);
            padding: 12px 32px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

        .cta-banner .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

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

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
            opacity: 0.6;
        }

        .footer-link {
            color: var(--text-muted);
            font-size: 14px;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-link:hover {
            color: #fff;
            padding-left: 4px;
        }

        .copyright-row {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            text-align: center;
            color: var(--text-dim);
            font-size: 13px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 64px 0;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .category-hero {
                min-height: 50vh;
                padding: 120px 24px 56px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .newsletter-cta {
                padding: 40px 24px;
                border-radius: 14px;
            }
            .newsletter-input-wrap {
                flex-direction: column;
            }
            .newsletter-input-wrap .btn-subscribe {
                width: 100%;
                justify-content: center;
            }
            .cta-banner {
                padding: 40px 24px;
                border-radius: 14px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
            .cta-banner .cta-buttons {
                flex-direction: column;
            }
            .cta-banner .btn-dark,
            .cta-banner .btn-white-outline {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .category-hero p.hero-desc {
                font-size: 15px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .timeline-wrap {
                padding-left: 16px;
            }
            .timeline-item {
                padding-left: 24px;
            }
        }

        /* focus access */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 0;
        }

/* roulang page: category3 */
:root {
  --bg-primary: #0A0E17;
  --bg-secondary: #0F1524;
  --bg-card: #111A2E;
  --bg-card-hover: #1A2440;
  --accent-purple: #8B5CF6;
  --accent-pink: #D946EF;
  --accent-cyan: #22D3EE;
  --accent-amber: #F59E0B;
  --text-primary: #E5E7EB;
  --text-muted: #94A3B8;
  --text-faint: #64748B;
  --border-default: rgba(255,255,255,0.06);
  --border-hover: rgba(139,92,246,0.4);
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-default: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-hover: 0 0 24px rgba(139,92,246,0.25);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  cursor: pointer;
  font-family: inherit;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10,14,23,0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
  background: rgba(10,14,23,0.95);
  border-bottom-color: rgba(139,92,246,0.2);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}
.nav-link {
  position: relative;
  color: #94A3B8;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  transition: color .3s ease;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s ease;
}
.nav-link:hover {
  color: #fff;
}
.nav-link:hover::after {
  transform: scaleX(0.6);
}
.nav-link.active {
  color: #fff;
}
.nav-link.active::after {
  transform: scaleX(1);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #8B5CF6, #D946EF);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: none;
  transition: all .3s ease;
  box-shadow: 0 4px 20px rgba(139,92,246,0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(139,92,246,0.45);
  filter: brightness(1.1);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-btn);
  transition: all .3s ease;
}
.btn-secondary:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.05);
  transform: translateY(-2px);
}
.btn-invert {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #0A0E17;
  color: var(--accent-cyan);
  font-weight: 700;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(2,2,10,0.6);
  transition: all .3s ease;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.btn-invert:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(34,211,238,0.3);
}
.btn-outline-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-btn);
  transition: all .3s ease;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-2px);
}

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(10,14,23,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  padding: 24px;
  transform: translateX(100%);
  opacity: 0;
  visibility: hidden;
  transition: transform .35s ease, opacity .35s ease, visibility .35s ease;
}
.mobile-menu.open {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
}
.mobile-link {
  color: #94A3B8;
  font-size: 18px;
  letter-spacing: 1px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: color .3s ease, padding-left .3s ease;
  display: block;
}
.mobile-link:hover,
.mobile-link.active {
  color: #fff;
  padding-left: 8px;
}

/* ===== Page Hero ===== */
.page-hero {
  min-height: 42vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding-top: 120px;
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(10,14,23,0.85) 0%, rgba(10,14,23,0.72) 50%, var(--bg-primary) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 20% 20%, rgba(139,92,246,0.2), transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(34,211,238,0.12), transparent 50%);
}
.hero-title {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-subtitle {
  margin-top: 16px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 640px;
}

/* ===== Section Head ===== */
.section-head {
  margin-bottom: 40px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(139,92,246,0.12);
  border: 1px solid rgba(139,92,246,0.25);
  color: #C4B5FD;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
}
.section-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}
.section-subtitle {
  margin-top: 8px;
  font-size: 15px;
  color: var(--text-muted);
}

/* ===== Pills ===== */
.pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  border-radius: 999px;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.4);
  color: #F5B93D;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
}
.info-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.2);
  color: #67E8F9;
  font-size: 13px;
  font-weight: 500;
}
.mini-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(34,211,238,0.12);
  border: 1px solid rgba(34,211,238,0.3);
  color: var(--accent-cyan);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

/* ===== Feature Card ===== */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-card);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: all .35s ease;
}
.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(139,92,246,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-pink);
  font-size: 20px;
  margin-bottom: 18px;
}
.link-more {
  color: var(--accent-cyan);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .3s ease, color .3s ease;
}
.link-more:hover {
  gap: 10px;
  color: #fff;
}

/* ===== Event Card ===== */
.event-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all .35s ease;
}
.event-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}
.event-card .thumb {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.event-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.event-card:hover .thumb img {
  transform: scale(1.05);
}
.event-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,14,23,0.8), transparent);
  z-index: 1;
}
.badge-amber {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(245,158,11,0.92);
  color: #1a1205;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .3px;
}
.badge-purple {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(139,92,246,0.92);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}
.badge-cyan {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(34,211,238,0.92);
  color: #062a33;
  font-size: 12px;
  font-weight: 700;
}

/* ===== Step Card ===== */
.step-card {
  text-align: center;
  padding: 26px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-card);
  transition: all .35s ease;
}
.step-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #8B5CF6, #22D3EE);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  box-shadow: 0 0 16px rgba(139,92,246,0.3);
}

/* ===== Stat Card ===== */
.stat-card {
  padding: 22px 16px;
  text-align: center;
  background: rgba(17,26,46,0.6);
  border: 1px solid var(--border-default);
  border-radius: 14px;
  transition: all .3s ease;
}
.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.stat-number {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, #8B5CF6, #22D3EE);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .3s ease, box-shadow .3s ease;
  margin-bottom: 14px;
}
.faq-item.open {
  border-color: rgba(139,92,246,0.5);
  box-shadow: 0 0 20px rgba(139,92,246,0.1);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  transition: color .3s ease;
}
.faq-question:hover {
  color: #fff;
}
.faq-toggle {
  color: var(--accent-purple);
  font-size: 15px;
  flex-shrink: 0;
  transition: transform .3s ease;
}
.faq-item.open .faq-toggle {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-answer-inner {
  padding: 0 22px 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, #7C3AED, #A855F7, #22D3EE);
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(rgba(255,255,255,0.12) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-default);
}
.footer-top-line {
  height: 1px;
  background: linear-gradient(to right, var(--accent-purple), var(--accent-cyan), transparent);
  margin-bottom: 40px;
}
.footer-link {
  color: var(--text-muted);
  font-size: 14px;
  transition: color .3s ease;
}
.footer-link:hover {
  color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .page-hero {
    min-height: 45vh;
  }
}
@media (max-width: 640px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .page-hero {
    min-height: 60vh;
    padding-top: 100px;
    padding-bottom: 60px;
  }
  .section-title {
    font-size: 24px;
  }
  .cta-banner {
    padding: 32px 20px;
  }
  .faq-question {
    font-size: 15px;
    padding: 16px 18px;
  }
  .faq-answer-inner {
    padding: 0 18px 18px;
  }
  .feature-card {
    padding: 22px;
  }
}