/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e8a844;
            --primary-dark: #c98a2a;
            --primary-light: #f4d8a8;
            --bg-deep: #070c18;
            --bg-body: #0b1120;
            --bg-card: rgba(255, 255, 255, 0.04);
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.14);
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-soft: #64748b;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.28);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.4);
            --transition: all .28s ease;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(7, 12, 24, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            height: 76px;
            gap: 16px;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 12px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(232, 168, 68, 0.1);
            border-color: rgba(232, 168, 68, 0.25);
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--text-main);
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #f4d8a8, #e8a844 55%, #c98a2a);
            color: #0b1120;
            font-size: 18px;
            font-weight: 800;
            box-shadow: 0 4px 16px rgba(232, 168, 68, 0.35);
        }
        .brand-logo:hover .logo-mark {
            transform: rotate(-6deg) scale(1.04);
        }
        .btn-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: #0b1120;
            background: linear-gradient(135deg, #f4d8a8, #e8a844 60%, #d99a2b);
            box-shadow: 0 4px 20px rgba(232, 168, 68, 0.3);
            transition: var(--transition);
            border: none;
        }
        .btn-brand:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 168, 68, 0.45);
        }
        .btn-brand:active {
            transform: translateY(0);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.28);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
        }
        .menu-toggle .bar {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 24px 20px;
            gap: 4px;
            background: rgba(7, 12, 24, 0.97);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-link {
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .mobile-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
        }
        .mobile-link.active {
            color: var(--primary);
            background: rgba(232, 168, 68, 0.1);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--bg-deep);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center 30%;
            opacity: 0.55;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg,
                    rgba(7, 12, 24, 0.92) 20%,
                    rgba(7, 12, 24, 0.65) 50%,
                    rgba(11, 17, 32, 0.45) 80%);
        }
        .hero-glow {
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 168, 68, 0.18) 0%, transparent 70%);
            top: -120px;
            right: 10%;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            max-width: 720px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            background: rgba(232, 168, 68, 0.1);
            border: 1px solid rgba(232, 168, 68, 0.25);
            margin-bottom: 24px;
        }
        .hero-tag i {
            font-size: 12px;
        }
        .hero h1 {
            font-size: 48px;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .hero h1 .text-gradient {
            background: linear-gradient(135deg, #f4d8a8, #e8a844 50%, #ffcf6e);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 48px;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, auto);
            gap: 40px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stat-item strong {
            display: block;
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
        }
        .stat-item span {
            font-size: 13px;
            color: var(--text-soft);
        }

        /* ===== 板块 ===== */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(232, 168, 68, 0.08);
            border: 1px solid rgba(232, 168, 68, 0.18);
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .section-sub {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 核心优势卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .feature-card {
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            background: var(--bg-card);
            border: 1px solid var(--border);
            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, transparent, var(--primary), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-light);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            font-size: 20px;
            color: var(--primary);
            background: rgba(232, 168, 68, 0.1);
            border: 1px solid rgba(232, 168, 68, 0.18);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 分类展示 ===== */
        .category-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            border-radius: 24px;
            overflow: hidden;
            background: var(--bg-deep);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }
        .category-media {
            position: relative;
            min-height: 320px;
        }
        .category-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .category-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 60%, rgba(11, 17, 32, 0.5) 100%);
        }
        .category-info {
            padding: 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
        }
        .category-info h2 {
            font-size: 30px;
            font-weight: 800;
            margin: 14px 0 14px;
        }
        .category-info p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-light);
            background: rgba(232, 168, 68, 0.1);
            border: 1px solid rgba(232, 168, 68, 0.22);
        }

        /* ===== 最新资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }
        .news-card {
            border-radius: var(--radius-lg);
            background: var(--bg-card);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-light);
        }
        .news-card a {
            display: grid;
            grid-template-columns: 130px 1fr;
            height: 100%;
        }
        .news-thumb {
            position: relative;
            min-height: 140px;
            background: var(--bg-deep);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .news-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 70%, rgba(11, 17, 32, 0.35));
        }
        .news-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .news-body h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover .news-body h3 {
            color: var(--primary);
        }
        .news-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 8px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .news-meta time {
            font-size: 12px;
            color: var(--text-soft);
        }
        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            border-radius: var(--radius-lg);
            background: var(--bg-card);
            border: 1px dashed var(--border-light);
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ===== 数据与流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .process-step {
            position: relative;
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            background: var(--bg-card);
            border: 1px solid var(--border);
            text-align: center;
            transition: var(--transition);
        }
        .process-step:hover {
            border-color: rgba(232, 168, 68, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .process-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            font-size: 18px;
            font-weight: 800;
            color: #0b1120;
            background: linear-gradient(135deg, #f4d8a8, #e8a844);
            margin-bottom: 16px;
            box-shadow: 0 4px 16px rgba(232, 168, 68, 0.3);
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            color: var(--text-main);
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-q i {
            color: var(--primary);
            transition: transform .3s ease;
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .32s ease;
        }
        .faq-a-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 16px;
            margin-top: 2px;
        }

        /* ===== CTA ===== */
        .cta-box {
            position: relative;
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            overflow: hidden;
            background: linear-gradient(135deg,
                    rgba(232, 168, 68, 0.14),
                    rgba(11, 17, 32, 0.7) 50%,
                    rgba(139, 92, 246, 0.1)),
                var(--bg-deep);
            border: 1px solid rgba(232, 168, 68, 0.2);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 16px;
            max-width: 340px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-soft);
        }
        .footer-bottom a {
            color: var(--text-soft);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== 焦点可见性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 40px;
            }
            .section {
                padding: 72px 0;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                grid-template-columns: 1fr auto;
            }
            .nav-left {
                display: none;
            }
            .nav-right .btn-brand {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: flex;
            }
            .hero {
                min-height: 560px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .category-card {
                grid-template-columns: 1fr;
            }
            .category-media {
                min-height: 200px;
            }
            .category-media::after {
                background: linear-gradient(180deg, transparent 60%, rgba(11, 17, 32, 0.5));
            }
            .category-info {
                padding: 32px 24px;
            }
            .section-title {
                font-size: 26px;
            }
            .cta-box {
                padding: 44px 24px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .news-card a {
                grid-template-columns: 1fr;
            }
            .news-thumb {
                min-height: 160px;
            }
            .news-thumb::after {
                background: linear-gradient(180deg, transparent 70%, rgba(11, 17, 32, 0.35));
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
            --primary: #6C4DF6;
            --primary-dark: #5735E0;
            --primary-light: #EDE9FE;
            --secondary: #F59C4C;
            --secondary-light: #FEF3E8;
            --dark-bg: #0E0D1D;
            --dark-card: #1A1836;
            --light-bg: #F6F5FB;
            --white: #FFFFFF;
            --text-main: #211E3E;
            --text-muted: #7B79A3;
            --border-light: #E8E6F5;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(60, 45, 120, 0.06);
            --shadow-md: 0 6px 24px rgba(60, 45, 120, 0.08);
            --shadow-lg: 0 16px 48px rgba(60, 45, 120, 0.15);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--light-bg);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 16px rgba(60, 45, 120, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: flex-start;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 1;
            justify-content: flex-end;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-muted);
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: rgba(108, 77, 246, 0.2);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            border-color: rgba(108, 77, 246, 0.25);
            font-weight: 700;
        }

        .nav-link:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-main);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

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

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #fff;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 800;
            box-shadow: 0 4px 12px rgba(108, 77, 246, 0.35);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            box-shadow: 0 6px 20px rgba(108, 77, 246, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(108, 77, 246, 0.4);
            filter: brightness(1.05);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(108, 77, 246, 0.3);
        }

        .btn-light {
            background: #fff;
            color: var(--text-main);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .btn-sm {
            padding: 6px 14px;
            font-size: 0.82rem;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border: 1px solid rgba(108, 77, 246, 0.15);
        }

        .badge-light {
            background: var(--light-bg);
            border-color: var(--border-light);
            color: var(--text-muted);
            font-size: 0.75rem;
            padding: 2px 10px;
        }

        .article-hero {
            position: relative;
            padding: 96px 0 88px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 13, 30, 0.92) 0%, rgba(30, 24, 70, 0.75) 50%, rgba(108, 77, 246, 0.45) 100%);
        }

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

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }

        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }

        .article-hero .badge {
            background: rgba(108, 77, 246, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            backdrop-filter: blur(8px);
        }

        .meta-time {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
        }

        .article-hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: -0.5px;
            max-width: 860px;
            margin-bottom: 16px;
            text-shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
        }

        .article-subtitle {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            line-height: 1.7;
        }

        .article-section {
            padding: 64px 0 56px;
            background: var(--light-bg);
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 40px;
            align-items: start;
        }

        .article-main {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 40px 44px;
        }

        .article-body {
            font-size: 1.04rem;
            line-height: 1.9;
            color: var(--text-main);
            word-break: break-word;
        }

        .article-body h2 {
            font-size: 1.45rem;
            font-weight: 700;
            margin: 1.8em 0 0.7em;
            padding-bottom: 0.5em;
            border-bottom: 2px solid var(--border-light);
            color: var(--text-main);
        }

        .article-body h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin: 1.4em 0 0.5em;
            color: var(--text-main);
        }

        .article-body p {
            margin-bottom: 1.1em;
        }

        .article-body ul,
        .article-body ol {
            margin: 1em 0;
            padding-left: 1.4em;
        }

        .article-body li {
            margin-bottom: 0.45em;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 1em 1.4em;
            margin: 1.2em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-main);
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-md);
            margin: 1.2em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

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

        .article-body code {
            background: var(--light-bg);
            padding: 0.15em 0.4em;
            border-radius: 4px;
            font-size: 0.9em;
            border: 1px solid var(--border-light);
        }

        .empty-content {
            background: var(--light-bg);
            border: 1px dashed var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .not-found {
            padding: 60px 30px;
            text-align: center;
        }

        .not-found-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .not-found h2 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }

        .not-found p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .sidebar-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card h3 {
            font-size: 0.98rem;
            font-weight: 700;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-main);
        }

        .sidebar-card h3 i {
            color: var(--primary);
        }

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

        .sidebar-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 9px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.88rem;
        }

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

        .list-label {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            background: var(--light-bg);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
        }

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

        .tag:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .related-section {
            padding: 72px 0 64px;
            background: #fff;
            border-top: 1px solid var(--border-light);
        }

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

        .section-header h2 {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(108, 77, 246, 0.25);
        }

        .related-card:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .related-img {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--primary-light);
        }

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

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

        .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(108, 77, 246, 0.9);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(8px);
        }

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

        .related-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .related-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }

        .read-more i {
            transition: transform 0.2s ease;
        }

        .related-card:hover .read-more i {
            transform: translateX(4px);
        }

        .cta-section {
            padding: 88px 0;
            background: linear-gradient(135deg, var(--dark-bg) 0%, #1E1848 60%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(108, 77, 246, 0.35) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -20%;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(245, 156, 76, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }

        .cta-section p {
            max-width: 560px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.98rem;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 80px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }

        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            opacity: 0.9;
        }

        .footer-col a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .nav-link {
                padding: 6px 12px;
                font-size: 0.82rem;
            }

            .brand-logo {
                font-size: 1rem;
            }

            .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 0.95rem;
            }

            .nav-right .btn-sm {
                padding: 5px 10px;
                font-size: 0.75rem;
            }

            .article-hero {
                padding: 64px 0 56px;
            }

            .article-hero h1 {
                font-size: 1.6rem;
            }

            .article-main {
                padding: 28px 22px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-brand p {
                max-width: 100%;
            }

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

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

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

            .header-inner {
                gap: 8px;
            }

            .nav-left {
                gap: 2px;
            }

            .nav-link {
                padding: 5px 9px;
                font-size: 0.76rem;
            }

            .brand-logo span:last-child {
                font-size: 0.9rem;
            }

            .logo-mark {
                width: 26px;
                height: 26px;
                font-size: 0.8rem;
                border-radius: 8px;
            }

            .nav-right .btn-sm {
                display: none;
            }

            .article-hero h1 {
                font-size: 1.4rem;
            }

            .article-subtitle {
                font-size: 0.9rem;
            }

            .article-section {
                padding: 40px 0 36px;
            }

            .article-main {
                padding: 20px 16px;
            }

            .article-layout {
                gap: 24px;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .related-section {
                padding: 48px 0 40px;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

            .related-body {
                padding: 18px;
            }

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

            .cta-actions .btn {
                width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 20px 0;
            }
        }

/* roulang page: category1 */
:root {
            --brand: #4f46e5;
            --brand-dark: #3730a3;
            --brand-light: #eef2ff;
            --gold: #f59e0b;
            --bg: #f8fafc;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 4px 24px rgba(79, 70, 229, 0.08);
            --shadow-lg: 0 16px 40px rgba(79, 70, 229, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .header-inner {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            height: 72px;
            gap: 24px;
        }

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

        .nav-link {
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: #cbd5e1;
            transition: var(--transition);
            letter-spacing: 0.02em;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.7), rgba(245, 158, 11, 0.6));
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand), var(--gold));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 10px;
            transition: var(--transition);
        }

        .menu-toggle .bar {
            width: 22px;
            height: 2px;
            background: #e2e8f0;
            border-radius: 2px;
            transition: var(--transition);
        }

        .menu-toggle.active .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .menu-toggle.active .bar:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.active .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 99;
            background: #0f172a;
            border-bottom: 1px solid rgba(148, 163, 184, 0.2);
            padding: 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .mobile-menu.open {
            max-height: 240px;
        }

        .mobile-link {
            display: block;
            padding: 14px 24px;
            color: #cbd5e1;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            transition: var(--transition);
        }

        .mobile-link:hover {
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
        }

        .mobile-link.active {
            color: #fff;
            background: rgba(79, 70, 229, 0.3);
        }

        /* ===== Hero ===== */
        .guide-hero {
            position: relative;
            padding: 110px 0 120px;
            background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
            overflow: hidden;
        }

        .guide-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            mix-blend-mode: screen;
        }

        .guide-hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.25), transparent 65%);
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #e0e7ff;
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(8px);
            margin-bottom: 24px;
        }

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

        .guide-hero h1 {
            font-size: clamp(36px, 5vw, 56px);
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            letter-spacing: 0.02em;
            max-width: 720px;
        }

        .guide-hero p {
            margin-top: 20px;
            max-width: 560px;
            font-size: 17px;
            line-height: 1.8;
            color: #cbd5e1;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 36px;
        }

        .btn-primary,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 999px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, #6366f1, #f59e0b);
            color: #fff;
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(79, 70, 229, 0.45);
        }

        .btn-primary:focus-visible,
        .btn-ghost:focus-visible {
            outline: 3px solid rgba(99, 102, 241, 0.5);
            outline-offset: 3px;
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #e2e8f0;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-2px);
        }

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

        .section-title {
            font-size: clamp(28px, 3vw, 36px);
            font-weight: 800;
            color: var(--text);
            text-align: center;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto 48px;
        }

        /* ===== Intro ===== */
        .intro-section {
            padding: 80px 0;
            background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-text h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
        }

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

        .intro-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .stat-item span {
            display: block;
            font-size: 28px;
            font-weight: 800;
            background: linear-gradient(135deg, #4f46e5, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-item em {
            font-style: normal;
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
            display: block;
        }

        /* ===== Guide cards ===== */
        .guide-section {
            padding: 80px 0;
        }

        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: #c7d2fe;
        }

        .card-media {
            position: relative;
            height: 220px;
            overflow: hidden;
            background: #e2e8f0;
        }

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

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

        .card-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, 0.35));
        }

        .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(79, 70, 229, 0.9);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(8px);
        }

        .card-body {
            padding: 24px 28px 28px;
        }

        .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .guide-card:hover .card-body h3 {
            color: var(--brand);
        }

        .card-body p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--brand);
            transition: var(--transition);
        }

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

        /* ===== Tags ===== */
        .tags-section {
            padding: 70px 0;
            background: linear-gradient(135deg, #312e81 0%, #1e1b4b 100%);
            position: relative;
            overflow: hidden;
        }

        .tags-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }

        .tags-section .section-title {
            color: #fff;
        }

        .tags-section .section-subtitle {
            color: #cbd5e1;
        }

        .tags-cloud {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            max-width: 680px;
            margin: 0 auto;
        }

        .tag-item {
            padding: 10px 24px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #e0e7ff;
            font-size: 15px;
            font-weight: 500;
            backdrop-filter: blur(8px);
            transition: var(--transition);
            cursor: default;
        }

        .tag-item:hover {
            background: rgba(245, 158, 11, 0.25);
            border-color: rgba(245, 158, 11, 0.4);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Process ===== */
        .process-section {
            padding: 80px 0;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 40px;
        }

        .process-item {
            position: relative;
            text-align: center;
            padding: 36px 24px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .process-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .process-item .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: linear-gradient(135deg, #4f46e5, #f59e0b);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
            margin-bottom: 18px;
        }

        .process-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: #f1f5f9;
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-item:hover {
            border-color: #c7d2fe;
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--brand);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item .faq-body {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, #0f172a, #1e1b4b);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            mix-blend-mode: screen;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-inner p {
            color: #cbd5e1;
            font-size: 17px;
            margin-bottom: 32px;
        }

        .cta-inner .btn-primary {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            color: #0f172a;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
        }

        .cta-inner .btn-primary:hover {
            box-shadow: 0 12px 36px rgba(245, 158, 11, 0.45);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 0 28px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .footer-brand .brand-logo {
            color: #fff;
            font-size: 18px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.8;
            max-width: 320px;
            margin-top: 14px;
            color: #94a3b8;
        }

        .footer-col h4 {
            color: #e2e8f0;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            padding: 6px 0;
            color: #94a3b8;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

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

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

        @media (max-width: 768px) {
            .header-inner {
                grid-template-columns: 1fr auto 1fr;
                height: 64px;
            }

            .nav-left {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .mobile-menu {
                display: block;
            }

            .guide-hero {
                padding: 70px 0 90px;
            }

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

            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .section {
                padding: 56px 0;
            }

            .intro-section,
            .guide-section,
            .process-section,
            .faq-section {
                padding: 56px 0;
            }

            .tags-section {
                padding: 50px 0;
            }

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

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

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

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

            .btn-primary,
            .btn-ghost {
                justify-content: center;
            }

            .intro-stats {
                grid-template-columns: 1fr;
            }

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

            .stat-item {
                padding: 20px;
            }
        }

        /* Focus states */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(99, 102, 241, 0.5);
            outline-offset: 2px;
            border-radius: 6px;
        }