/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #0d0d1a;
            --primary-light: #1a1a2e;
            --secondary: #1e1e36;
            --accent: #e94560;
            --accent-hover: #ff6b7a;
            --accent2: #f5a623;
            --accent2-hover: #ffc04d;
            --bg: #0a0a14;
            --bg-card: #14142a;
            --bg-card-hover: #1c1c3a;
            --bg-section: #0f0f20;
            --bg-dark: #07070e;
            --text: #f0f0f5;
            --text-secondary: #c0c0d0;
            --text-muted: #8888a8;
            --border: #2a2a44;
            --border-light: #3a3a55;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0,0,0,0.5);
            --shadow-sm: 0 4px 16px rgba(0,0,0,0.3);
            --shadow-glow: 0 0 30px rgba(233,69,96,0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ========== 基础 Reset ========== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        a { color: var(--accent2); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent2-hover); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; transition: var(--transition); }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
        h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); }
        h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        p { margin-bottom: 0.75rem; color: var(--text-secondary); }
        ::selection { background: var(--accent); color: #fff; }

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow { max-width: 880px; }

        /* ========== 板块 ========== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section--dark { background: var(--bg-dark); }
        .section--alt { background: var(--bg-section); }
        .section__header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section__header h2 {
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section__header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            border-radius: 4px;
            margin: 16px auto 0;
        }
        .section__header p {
            font-size: 1.1rem;
            max-width: 600px;
            margin: 12px auto 0;
            color: var(--text-muted);
        }
        .section__subtitle {
            color: var(--accent2);
            font-size: 0.9rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
            display: block;
        }

        /* ========== 导航 ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13,13,26,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42,42,68,0.4);
            transition: var(--transition);
        }
        .header.scrolled { background: rgba(13,13,26,0.96); box-shadow: 0 4px 30px rgba(0,0,0,0.4); }
        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header__logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .header__logo i { color: var(--accent); font-size: 1.6rem; }
        .header__logo span { background: linear-gradient(135deg, #fff 60%, var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .header__nav { display: flex; align-items: center; gap: 8px; }
        .header__nav a {
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .header__nav a:hover { color: #fff; background: rgba(233,69,96,0.1); }
        .header__nav a.active {
            color: #fff;
            background: rgba(233,69,96,0.15);
        }
        .header__nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .header__cta {
            padding: 8px 24px;
            background: linear-gradient(135deg, var(--accent), #d63c55);
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(233,69,96,0.3);
        }
        .header__cta:hover { background: linear-gradient(135deg, var(--accent-hover), var(--accent)); transform: translateY(-1px); box-shadow: 0 6px 25px rgba(233,69,96,0.4); }
        .header__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; cursor: pointer; }
        .header__toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 4px; transition: var(--transition); }
        .header__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .header__toggle.active span:nth-child(2) { opacity: 0; }
        .header__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ========== Hero ========== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding-top: var(--nav-height);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,13,26,0.92) 30%, rgba(13,13,26,0.65) 70%, rgba(233,69,96,0.15) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 200px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 1;
        }
        .hero__content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 40px 24px;
        }
        .hero__tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(233,69,96,0.2);
            border: 1px solid rgba(233,69,96,0.3);
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }
        .hero h1 { margin-bottom: 20px; }
        .hero h1 span { background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero__actions .btn { padding: 14px 36px; font-size: 1.05rem; }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
            justify-content: center;
        }
        .btn--primary {
            background: linear-gradient(135deg, var(--accent), #d63c55);
            color: #fff;
            box-shadow: 0 4px 20px rgba(233,69,96,0.35);
        }
        .btn--primary:hover { background: linear-gradient(135deg, var(--accent-hover), var(--accent)); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(233,69,96,0.45); color: #fff; }
        .btn--secondary {
            background: rgba(255,255,255,0.06);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.15);
            backdrop-filter: blur(10px);
        }
        .btn--secondary:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.25); transform: translateY(-2px); color: #fff; }
        .btn--outline {
            background: transparent;
            color: var(--accent2);
            border: 2px solid var(--accent2);
        }
        .btn--outline:hover { background: var(--accent2); color: #0d0d1a; transform: translateY(-2px); }
        .btn--block { width: 100%; }
        .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

        /* ========== 数据卡片 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
        .stat-card__number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card__label { color: var(--text-muted); font-size: 0.9rem; margin-top: 6px; }

        /* ========== 特色卡片 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover { border-color: var(--border-light); transform: translateY(-6px); box-shadow: var(--shadow); }
        .feature-card:hover::before { opacity: 1; }
        .feature-card__icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(233,69,96,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .feature-card h3 { margin-bottom: 10px; font-size: 1.2rem; }
        .feature-card p { color: var(--text-muted); font-size: 0.95rem; }

        /* ========== 分类入口 ========== */
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card:hover { border-color: var(--accent2); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(245,166,35,0.1); }
        .category-card__icon { font-size: 3rem; color: var(--accent2); margin-bottom: 16px; }
        .category-card h3 { font-size: 1.6rem; margin-bottom: 12px; }
        .category-card p { color: var(--text-muted); max-width: 400px; margin: 0 auto 24px; }

        /* ========== 资讯列表 ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover { border-color: var(--border-light); transform: translateY(-4px); box-shadow: var(--shadow); }
        .news-card__img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .news-card__body { padding: 20px 24px 24px; }
        .news-card__tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            background: rgba(233,69,96,0.12);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .news-card h3 { font-size: 1.1rem; margin-bottom: 8px; transition: var(--transition); }
        .news-card:hover h3 { color: var(--accent2); }
        .news-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card__meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-muted); }
        .news-card__meta i { margin-right: 4px; }

        /* ========== 标签 ========== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 50px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(233,69,96,0.25); }
        .tag i { font-size: 0.8rem; }

        /* ========== 流程 ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 16%;
            right: 16%;
            height: 2px;
            background: linear-gradient(90deg, var(--border), var(--accent), var(--border));
            z-index: 0;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg);
            padding: 0 16px;
        }
        .step-card__number {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #d63c55);
            color: #fff;
            font-size: 1.6rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 4px 20px rgba(233,69,96,0.3);
        }
        .step-card h3 { margin-bottom: 8px; }
        .step-card p { color: var(--text-muted); font-size: 0.95rem; max-width: 260px; margin: 0 auto; }

        /* ========== FAQ ========== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-item summary {
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--accent2);
            transition: var(--transition);
        }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-item[open] summary { color: var(--accent2); }
        .faq-item__answer { padding: 0 24px 20px; color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }

        /* ========== CTA ========== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            padding: 100px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,13,26,0.9), rgba(233,69,96,0.2));
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: var(--text-secondary); max-width: 560px; margin: 0 auto 32px; }
        .cta-section .btn { font-size: 1.05rem; padding: 16px 44px; }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer__brand h3 {
            font-size: 1.4rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer__brand h3 i { color: var(--accent); }
        .footer__brand p { color: var(--text-muted); font-size: 0.9rem; max-width: 320px; }
        .footer__col h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text); }
        .footer__col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer__col ul a { color: var(--text-muted); font-size: 0.9rem; }
        .footer__col ul a:hover { color: var(--accent2); padding-left: 4px; }
        .footer__col ul a i { width: 20px; color: var(--accent2); }
        .footer__bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer__bottom p { color: var(--text-muted); font-size: 0.85rem; margin: 0; }
        .footer__socials { display: flex; gap: 12px; }
        .footer__socials a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer__socials a:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-3px); }

        /* ========== 空状态 ========== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
        }
        .empty-state i { font-size: 3rem; margin-bottom: 16px; color: var(--border); }
        .empty-state p { font-size: 1rem; }

        /* ========== 辅助 ========== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .d-none { display: none; }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid::before { display: none; }
        }

        @media (max-width: 768px) {
            .header__nav { display: none; }
            .header__nav.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13,13,26,0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px;
                gap: 4px;
            }
            .header__nav.mobile-open a { width: 100%; padding: 14px 20px; border-radius: var(--radius-sm); }
            .header__nav.mobile-open .header__cta { text-align: center; }
            .header__toggle { display: flex; }
            .hero { min-height: 90vh; }
            .hero__content { padding: 24px 16px; }
            .hero p { font-size: 1rem; }
            .hero__actions .btn { padding: 12px 28px; font-size: 0.95rem; width: 100%; justify-content: center; }
            .section { padding: 56px 0; }
            .section__header { margin-bottom: 36px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card { padding: 24px 16px; }
            .stat-card__number { font-size: 2rem; }
            .features-grid { grid-template-columns: 1fr; gap: 16px; }
            .news-grid { grid-template-columns: 1fr; gap: 16px; }
            .steps-grid { grid-template-columns: 1fr; gap: 24px; }
            .category-card { padding: 32px 24px; }
            .footer__grid { grid-template-columns: 1fr; gap: 24px; }
            .footer__bottom { flex-direction: column; text-align: center; }
            .faq-item summary { padding: 16px 18px; font-size: 0.95rem; }
            .faq-item__answer { padding: 0 18px 16px; }
            .cta-section { padding: 60px 0; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-card { padding: 18px 12px; }
            .stat-card__number { font-size: 1.6rem; }
            .hero h1 { font-size: 1.8rem; }
            .hero .btn { font-size: 0.9rem; padding: 10px 20px; }
            .section { padding: 40px 0; }
            .feature-card { padding: 24px 18px; }
            .news-card__body { padding: 16px 18px 20px; }
            .tags-cloud .tag { padding: 6px 14px; font-size: 0.8rem; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #dbeafe;
            --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-inverse: #ffffff;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
            --shadow-hover: 0 8px 32px rgba(37,99,235,0.15);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container: 1200px;
            --nav-height: 72px;
            --max-width: 840px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow { max-width: var(--max-width); }
        section { padding: 80px 0; }
        @media (max-width:768px) { section { padding: 48px 0; } .container { padding: 0 16px; } }

        /* ===== 插图占位 ===== */
        .img-placeholder {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 14px;
            min-height: 200px;
            overflow: hidden;
        }
        .img-placeholder img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius-sm); }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .header.scrolled { box-shadow: var(--shadow); }
        .header__inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
        }
        .header__logo i { color: var(--primary); font-size: 26px; }
        .header__logo span { background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .header__logo:hover { opacity: 0.9; }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header__nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .header__nav a i { margin-right: 6px; font-size: 14px; }
        .header__nav a:hover { color: var(--primary); background: var(--primary-light); }
        .header__nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header__nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px; left: 50%;
            transform: translateX(-50%);
            width: 20px; height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .header__cta {
            background: var(--primary-gradient) !important;
            color: var(--text-inverse) !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 12px rgba(37,99,235,0.3);
        }
        .header__cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37,99,235,0.4) !important;
            color: #fff !important;
        }
        .header__toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            cursor: pointer;
            padding: 8px;
        }
        .header__toggle span {
            display: block;
            width: 26px; height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .header__toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
        .header__toggle.active span:nth-child(2) { opacity: 0; }
        .header__toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
        @media (max-width: 900px) {
            .header__nav {
                position: fixed;
                top: var(--nav-height); left: 0; right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 20px;
                gap: 12px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
            }
            .header__nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .header__nav a { width: 100%; text-align: center; padding: 12px; }
            .header__toggle { display: flex; }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: #cbd5e1;
            padding: 64px 0 0;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer__brand h3 {
            font-size: 22px;
            color: #fff;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer__brand h3 i { color: var(--primary); }
        .footer__brand p { font-size: 14px; line-height: 1.8; color: #94a3b8; }
        .footer__col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer__col ul li { margin-bottom: 10px; }
        .footer__col ul li a {
            color: #94a3b8;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer__col ul li a i { font-size: 12px; color: var(--primary); }
        .footer__col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer__bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer__bottom p { font-size: 13px; color: #64748b; }
        .footer__socials { display: flex; gap: 16px; }
        .footer__socials a {
            color: #64748b;
            font-size: 20px;
            transition: var(--transition);
        }
        .footer__socials a:hover { color: var(--primary); transform: scale(1.15); }
        @media (max-width: 900px) {
            .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 600px) {
            .footer__grid { grid-template-columns: 1fr; }
            .footer__bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            padding: 140px 0 64px;
            position: relative;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            min-height: 360px;
            display: flex;
            align-items: flex-end;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,64,175,0.55) 100%);
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner__breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-banner__breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-banner__breadcrumb a:hover { color: #fff; }
        .article-banner__breadcrumb span { color: var(--accent); }
        .article-banner__category {
            display: inline-block;
            background: var(--primary-gradient);
            color: #fff;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-banner__title {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 800px;
            margin-bottom: 20px;
        }
        .article-banner__meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            color: rgba(255,255,255,0.75);
            font-size: 14px;
        }
        .article-banner__meta i { margin-right: 6px; color: var(--accent); }
        @media (max-width: 768px) {
            .article-banner { padding: 110px 0 40px; min-height: 280px; }
            .article-banner__title { font-size: 26px; }
            .article-banner__meta { gap: 16px; font-size: 13px; }
        }

        /* ===== 文章正文 ===== */
        .article-content { padding: 56px 0 40px; }
        .article-content__inner {
            max-width: var(--max-width);
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px;
        }
        .article-content__body {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content__body p { margin-bottom: 1.6em; }
        .article-content__body h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 2em 0 1em;
            color: var(--text);
            border-left: 4px solid var(--primary);
            padding-left: 18px;
        }
        .article-content__body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 1.6em 0 0.8em;
            color: var(--text);
        }
        .article-content__body ul, .article-content__body ol {
            margin: 1.2em 0;
            padding-left: 24px;
        }
        .article-content__body ul li { list-style: disc; margin-bottom: 8px; }
        .article-content__body ol li { list-style: decimal; margin-bottom: 8px; }
        .article-content__body img {
            border-radius: var(--radius);
            margin: 2em auto;
            box-shadow: var(--shadow);
        }
        .article-content__body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 20px 24px;
            margin: 1.8em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-content__body a { color: var(--primary); text-decoration: underline; }
        .article-content__body a:hover { color: var(--primary-dark); }
        .article-content__footer {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
            gap: 20px;
        }
        .article-content__tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-content__tags .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-alt);
            border-radius: 40px;
            font-size: 13px;
            color: var(--text-light);
            transition: var(--transition);
        }
        .article-content__tags .tag:hover { background: var(--primary-light); color: var(--primary); }
        .article-content__share {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-light);
        }
        .article-content__share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px; height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-light);
            transition: var(--transition);
            font-size: 16px;
        }
        .article-content__share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        @media (max-width: 768px) {
            .article-content__inner { padding: 24px 20px; }
            .article-content__body { font-size: 16px; }
            .article-content__body h2 { font-size: 22px; }
        }

        /* ===== 文章导航（上下篇） ===== */
        .article-nav {
            padding: 0 0 56px;
        }
        .article-nav__inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .article-nav__item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-nav__item:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--primary); }
        .article-nav__item--next { text-align: right; flex-direction: row-reverse; }
        .article-nav__label { font-size: 12px; color: var(--text-light); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
        .article-nav__title { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.4; }
        .article-nav__item:hover .article-nav__title { color: var(--primary); }
        .article-nav__icon { font-size: 20px; color: var(--primary); flex-shrink: 0; }
        @media (max-width: 640px) {
            .article-nav__inner { grid-template-columns: 1fr; }
            .article-nav__item--next { text-align: left; flex-direction: row; }
        }

        /* ===== 相关文章 ===== */
        .related-posts {
            background: var(--bg-alt);
            padding: 64px 0;
        }
        .related-posts__header {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-posts__header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
        }
        .related-posts__header p {
            color: var(--text-light);
            margin-top: 8px;
            font-size: 15px;
        }
        .related-posts__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); border-color: transparent; }
        .related-card__img {
            height: 180px;
            overflow: hidden;
        }
        .related-card__img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .related-card:hover .related-card__img img { transform: scale(1.05); }
        .related-card__body { padding: 20px; }
        .related-card__cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 12px;
            border-radius: 40px;
            margin-bottom: 10px;
        }
        .related-card__title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card__meta { font-size: 13px; color: var(--text-light); }
        .related-card__meta i { margin-right: 4px; }
        @media (max-width: 900px) {
            .related-posts__grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .related-posts__grid { grid-template-columns: 1fr; }
        }

        /* ===== CTA 区域 ===== */
        .cta-section {
            padding: 64px 0;
            background: var(--bg-dark) url('/assets/images/backpic/back-3.png') center/cover no-repeat fixed;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(37,99,235,0.6) 100%);
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-section .btn {
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-primary {
            background: var(--accent);
            color: #1e293b;
            box-shadow: 0 4px 20px rgba(245,158,11,0.35);
        }
        .cta-section .btn-primary:hover { background: var(--accent-dark); transform: translateY(-3px); box-shadow: 0 8px 32px rgba(245,158,11,0.45); }
        .cta-section .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
        }
        .cta-section .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-3px); }
        @media (max-width: 600px) {
            .cta-section h2 { font-size: 26px; }
            .cta-section p { font-size: 16px; }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 64px 0;
            background: #fff;
        }
        .faq-section__header {
            text-align: center;
            margin-bottom: 40px;
        }
        .faq-section__header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
        }
        .faq-section__header p { color: var(--text-light); margin-top: 8px; }
        .faq-grid {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover { border-color: var(--primary); }
        .faq-item__question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
        }
        .faq-item__question i { color: var(--primary); transition: var(--transition); font-size: 14px; }
        .faq-item.open .faq-item__question i { transform: rotate(180deg); }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-item__answer {
            max-height: 300px;
            padding-top: 16px;
        }

        /* ===== 内容不存在 ===== */
        .not-found {
            text-align: center;
            padding: 100px 20px;
        }
        .not-found i { font-size: 64px; color: var(--text-light); margin-bottom: 24px; }
        .not-found h2 { font-size: 28px; margin-bottom: 12px; }
        .not-found p { color: var(--text-light); margin-bottom: 24px; }
        .not-found .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary-gradient);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }
        .not-found .btn-home:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); color: #fff; }

        /* ===== 通用按钮 ===== */
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; transition: var(--transition); cursor: pointer; border: none; font-size: 15px; }
        .btn-primary { background: var(--primary-gradient); color: #fff; box-shadow: 0 4px 16px rgba(37,99,235,0.3); }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(37,99,235,0.4); color: #fff; }

        /* ===== 动画 ===== */
        @keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
        .animate-fade-up { animation: fadeUp 0.6s ease forwards; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }

        /* ===== 滚动间距 ===== */
        .content-section { padding: 56px 0; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3cf1;
            --primary-dark: #5228c7;
            --primary-light: #8b6cf7;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --bg-body: #0f0e17;
            --bg-card: #1a1932;
            --bg-card-hover: #23214a;
            --bg-section: #12112a;
            --bg-section-alt: #0b0a1e;
            --text-primary: #f1f5f9;
            --text-secondary: #c4b5fd;
            --text-muted: #8884b0;
            --border-color: #2e2b5e;
            --border-light: #3d3970;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(108, 60, 241, 0.15);
            --shadow-md: 0 8px 30px rgba(108, 60, 241, 0.2);
            --shadow-lg: 0 16px 50px rgba(108, 60, 241, 0.25);
            --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-h);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.8rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
        }
        h3 {
            font-size: clamp(1.15rem, 2.2vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 80px 0;
        }
        .section__title {
            text-align: center;
            margin-bottom: 16px;
            position: relative;
        }
        .section__title span {
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section__subtitle {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 52px;
            font-size: 1.08rem;
            color: var(--text-muted);
        }
        .section__subtitle i {
            color: var(--secondary);
            margin-right: 6px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(15, 14, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition), border-color var(--transition);
        }
        .header.scrolled {
            background: rgba(11, 10, 30, 0.97);
            border-bottom-color: var(--border-light);
        }
        .header__inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .header__logo i {
            font-size: 1.8rem;
            color: var(--secondary);
            -webkit-text-fill-color: var(--secondary);
        }
        .header__logo:hover {
            opacity: 0.85;
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header__nav a {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header__nav a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .header__nav a:hover {
            color: var(--text-primary);
            background: rgba(108, 60, 241, 0.12);
        }
        .header__nav a.active {
            color: var(--text-primary);
            background: rgba(108, 60, 241, 0.2);
            box-shadow: inset 0 -2px 0 var(--secondary);
        }
        .header__nav a.active i {
            opacity: 1;
            color: var(--secondary);
        }
        .header__cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
            color: #fff !important;
            border-radius: var(--radius-sm) !important;
            padding: 8px 20px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 15px rgba(108, 60, 241, 0.3);
        }
        .header__cta i {
            color: #fff !important;
            opacity: 1 !important;
        }
        .header__cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(108, 60, 241, 0.45) !important;
            background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
        }
        .header__toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .header__toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition);
        }
        .header__toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .header__toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .header__toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero / Banner ===== */
        .hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--bg-section);
            overflow: hidden;
            padding: 60px 0;
        }
        .hero__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            filter: saturate(0.7) brightness(0.6);
        }
        .hero__overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(108, 60, 241, 0.2) 0%, rgba(15, 14, 23, 0.85) 70%);
            z-index: 1;
        }
        .hero__content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 0 24px;
        }
        .hero__badge {
            display: inline-block;
            background: rgba(108, 60, 241, 0.25);
            border: 1px solid var(--border-light);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--secondary-light);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero__badge i {
            margin-right: 6px;
        }
        .hero__content h1 {
            font-size: clamp(2.4rem, 5.5vw, 4rem);
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 30%, var(--secondary-light) 70%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero__content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero__search {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            background: rgba(26, 25, 50, 0.8);
            border: 1px solid var(--border-color);
            border-radius: 60px;
            overflow: hidden;
            backdrop-filter: blur(6px);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .hero__search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(108, 60, 241, 0.2);
        }
        .hero__search input {
            flex: 1;
            padding: 14px 22px;
            background: transparent;
            color: var(--text-primary);
            font-size: 0.95rem;
            border: none;
        }
        .hero__search input::placeholder {
            color: var(--text-muted);
        }
        .hero__search button {
            padding: 14px 28px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero__search button:hover {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            transform: scale(1.02);
        }

        /* ===== Tag Filters ===== */
        .tag-filters {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: -28px;
            position: relative;
            z-index: 3;
            padding-bottom: 20px;
        }
        .tag-filters .tag {
            padding: 10px 24px;
            border-radius: 60px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 6px;
            backdrop-filter: blur(4px);
        }
        .tag-filters .tag i {
            font-size: 0.8rem;
            opacity: 0.7;
        }
        .tag-filters .tag:hover {
            border-color: var(--primary-light);
            color: var(--text-primary);
            background: var(--bg-card-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .tag-filters .tag.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-color: transparent;
            color: #fff;
            box-shadow: 0 4px 18px rgba(108, 60, 241, 0.3);
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            border-color: var(--border-light);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            background: var(--bg-card-hover);
        }
        .card__img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-section);
        }
        .card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card__img img {
            transform: scale(1.08);
        }
        .card__badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(108, 60, 241, 0.85);
            backdrop-filter: blur(4px);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .card__badge.hot {
            background: rgba(245, 158, 11, 0.85);
        }
        .card__body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card__body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-primary);
        }
        .card__body h3 a {
            color: inherit;
        }
        .card__body h3 a:hover {
            color: var(--secondary);
        }
        .card__body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            flex: 1;
            line-height: 1.7;
        }
        .card__meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .card__meta span i {
            margin-right: 4px;
            color: var(--primary-light);
        }
        .card__meta .views {
            color: var(--text-muted);
        }
        .card__meta .views i {
            color: var(--secondary);
        }

        /* ===== Stats / Data Section ===== */
        .stats-section {
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: rgba(26, 25, 50, 0.5);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .label {
            font-size: 0.92rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .stat-item .label i {
            margin-right: 6px;
            color: var(--secondary);
        }

        /* ===== Latest List ===== */
        .list-section .list-group {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .list-group .list-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 22px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .list-group .list-item:hover {
            border-color: var(--border-light);
            background: var(--bg-card-hover);
            transform: translateX(6px);
            box-shadow: var(--shadow-sm);
        }
        .list-item .rank {
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--text-muted);
            min-width: 36px;
            text-align: center;
        }
        .list-item .rank.top {
            color: var(--secondary);
        }
        .list-item .info {
            flex: 1;
        }
        .list-item .info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .list-item .info h4 a {
            color: var(--text-primary);
        }
        .list-item .info h4 a:hover {
            color: var(--secondary);
        }
        .list-item .info .meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .list-item .info .meta span i {
            margin-right: 4px;
            color: var(--primary-light);
        }
        .list-item .tag-sm {
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(108, 60, 241, 0.2);
            color: var(--primary-light);
            border: 1px solid rgba(108, 60, 241, 0.2);
            white-space: nowrap;
        }
        .list-item .tag-sm.hot {
            background: rgba(245, 158, 11, 0.2);
            color: var(--secondary);
            border-color: rgba(245, 158, 11, 0.2);
        }

        /* ===== Special Topics ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .topic-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            min-height: 220px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 30px;
        }
        .topic-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 14, 23, 0.9) 0%, rgba(15, 14, 23, 0.2) 70%);
            z-index: 1;
            transition: opacity var(--transition);
        }
        .topic-card .topic-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            object-fit: cover;
            width: 100%;
            height: 100%;
            transition: transform 0.5s ease;
        }
        .topic-card:hover .topic-bg {
            transform: scale(1.08);
        }
        .topic-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .topic-card>*:not(.topic-bg) {
            position: relative;
            z-index: 2;
        }
        .topic-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .topic-card p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 12px;
        }
        .topic-card .topic-meta {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            gap: 16px;
        }
        .topic-card .topic-meta i {
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item .faq-q {
            padding: 16px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            background: rgba(108, 60, 241, 0.06);
        }
        .faq-item .faq-q i {
            transition: transform var(--transition);
            color: var(--primary-light);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 22px 18px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
            text-align: center;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.07;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.08rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(108, 60, 241, 0.3);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(108, 60, 241, 0.45);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }
        .btn-secondary:hover {
            border-color: var(--primary-light);
            background: rgba(108, 60, 241, 0.08);
            transform: translateY(-3px);
            color: var(--text-primary);
        }

        /* ===== Footer ===== */
        .footer {
            background: #0a091d;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 30px;
        }
        .footer__brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer__brand h3 i {
            -webkit-text-fill-color: var(--secondary);
        }
        .footer__brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.8;
        }
        .footer__col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer__col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 36px;
            height: 2.5px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 3px;
        }
        .footer__col ul li {
            margin-bottom: 10px;
        }
        .footer__col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .footer__col ul li a i {
            font-size: 0.7rem;
            color: var(--primary-light);
        }
        .footer__col ul li a:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }
        .footer__bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer__bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }
        .footer__socials {
            display: flex;
            gap: 14px;
        }
        .footer__socials a {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(108, 60, 241, 0.12);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer__socials a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(108, 60, 241, 0.3);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .header__nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(15, 14, 23, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
                align-items: stretch;
            }
            .header__nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .header__nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .header__nav .header__cta {
                text-align: center;
                margin-top: 8px;
                padding: 12px 16px !important;
            }
            .header__toggle {
                display: flex;
            }

            .hero {
                min-height: 340px;
                padding: 40px 0;
            }
            .hero__content h1 {
                font-size: clamp(1.8rem, 6vw, 2.8rem);
            }
            .hero__content p {
                font-size: 1rem;
            }
            .hero__search {
                flex-direction: column;
                border-radius: var(--radius-sm);
            }
            .hero__search input {
                padding: 12px 18px;
            }
            .hero__search button {
                padding: 12px 18px;
                justify-content: center;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section {
                padding: 56px 0;
            }
            .section__subtitle {
                margin-bottom: 36px;
                font-size: 0.95rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-item {
                padding: 22px 12px;
            }
            .stat-item .num {
                font-size: 2rem;
            }
            .tag-filters {
                gap: 8px;
                padding-left: 12px;
                padding-right: 12px;
            }
            .tag-filters .tag {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .list-group .list-item {
                flex-wrap: wrap;
                padding: 14px 16px;
            }
            .list-item .rank {
                font-size: 1.1rem;
                min-width: 28px;
            }
            .topic-card {
                padding: 20px;
                min-height: 180px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-btns .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero__search input {
                font-size: 0.88rem;
            }
            .card__body {
                padding: 16px 18px 20px;
            }
            .card__body h3 {
                font-size: 1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .num {
                font-size: 1.7rem;
            }
            .stat-item .label {
                font-size: 0.8rem;
            }
            .faq-item .faq-q {
                font-size: 0.92rem;
                padding: 14px 16px;
            }
            .faq-item .faq-a {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .footer__col h4 {
                font-size: 0.95rem;
            }
        }

        /* ===== Utilities ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .gap-12 {
            gap: 12px;
        }