/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1B2A4A;
            --color-primary-light: #2C3E6B;
            --color-primary-dark: #0F1A30;
            --color-accent: #C9A84C;
            --color-accent-light: #E0C56A;
            --color-accent-dark: #A8892E;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8F7F4;
            --color-bg-dark: #1B2A4A;
            --color-text: #1A1A2E;
            --color-text-light: #4A4A6A;
            --color-text-inverse: #FFFFFF;
            --color-border: #E5E3DF;
            --color-border-light: #F0EFEC;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26,26,46,0.06);
            --shadow-md: 0 8px 30px rgba(26,26,46,0.08);
            --shadow-lg: 0 20px 60px rgba(26,26,46,0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 600; }

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

        /* ===== 导航 ===== */
        .site-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(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--color-primary);
        }
        .site-logo span { color: var(--color-accent); }
        .main-nav { display: flex; align-items: center; gap: 36px; }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-light);
            position: relative;
            padding: 6px 0;
            letter-spacing: 0.2px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            transition: var(--transition);
        }
        .main-nav a:hover { color: var(--color-primary); }
        .main-nav a:hover::after { width: 100%; }
        .main-nav a.active { color: var(--color-primary); }
        .main-nav a.active::after { width: 100%; }
        .nav-cta {
            background: var(--color-primary);
            color: var(--color-text-inverse) !important;
            padding: 8px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.3px;
        }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover { background: var(--color-primary-light); transform: translateY(-1px); }
        .mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .mobile-toggle.active span:nth-child(2) { opacity: 0; }
        .mobile-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: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            overflow: hidden;
            padding-top: var(--nav-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(201,168,76,0.08) 0%, transparent 60%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 80px 24px 100px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201,168,76,0.15);
            border: 1px solid rgba(201,168,76,0.25);
            border-radius: 50px;
            padding: 6px 18px 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-accent-light);
            letter-spacing: 0.5px;
            margin-bottom: 28px;
        }
        .hero-badge i { font-size: 12px; }
        .hero h1 {
            font-size: 56px;
            font-weight: 700;
            color: var(--color-text-inverse);
            line-height: 1.1;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero h1 em { color: var(--color-accent); font-style: normal; }
        .hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.75);
            line-height: 1.7;
            max-width: 560px;
            margin-bottom: 36px;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary-dark);
        }
        .btn-primary:hover { background: var(--color-accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,168,76,0.3); }
        .btn-outline {
            background: transparent;
            color: var(--color-text-inverse);
            border: 1.5px solid rgba(255,255,255,0.3);
        }
        .btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); transform: translateY(-2px); }
        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stat h3 { font-size: 32px; font-weight: 700; color: var(--color-text-inverse); }
        .hero-stat h3 i { color: var(--color-accent); font-size: 28px; margin-right: 8px; }
        .hero-stat p { font-size: 14px; color: rgba(255,255,255,0.55); margin: 0; }

        /* ===== 板块通用 ===== */
        .section { padding: 100px 0; }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark { background: var(--color-bg-dark); color: var(--color-text-inverse); }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-dark .section-title { color: var(--color-text-inverse); }
        .section-subtitle {
            font-size: 17px;
            color: var(--color-text-light);
            max-width: 580px;
            margin-bottom: 48px;
            line-height: 1.6;
        }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.6); }
        .section-header { text-align: center; margin-bottom: 56px; }
        .section-header .section-subtitle { margin-left: auto; margin-right: auto; }
        .section-divider {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 4px;
            margin: 0 auto 20px;
        }

        /* ===== 服务卡片 ===== */
        .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 30px; }
        .service-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: 40px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .service-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(201,168,76,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-accent);
            margin-bottom: 24px;
            transition: var(--transition);
        }
        .service-card:hover .icon-wrap { background: var(--color-accent); color: var(--color-primary-dark); }
        .service-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; color: var(--color-primary); }
        .service-card p { font-size: 15px; color: var(--color-text-light); line-height: 1.7; margin-bottom: 20px; }
        .service-card .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            margin-right: 6px;
            margin-bottom: 6px;
        }

        /* ===== 关于区块 ===== */
        .about-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .about-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--color-bg-alt);
        }
        .about-image img { width: 100%; height: 400px; object-fit: cover; }
        .about-text h2 { font-size: 34px; font-weight: 700; margin-bottom: 20px; color: var(--color-primary); }
        .about-text p { font-size: 16px; color: var(--color-text-light); line-height: 1.8; margin-bottom: 16px; }
        .about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
        .about-feature { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--color-text); }
        .about-feature i { color: var(--color-accent); font-size: 18px; }

        /* ===== 资讯卡片 ===== */
        .news-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
        .news-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .news-card .thumb {
            height: 200px;
            background: var(--color-bg-alt);
            overflow: hidden;
        }
        .news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .news-card:hover .thumb img { transform: scale(1.05); }
        .news-card .body { padding: 24px; }
        .news-card .meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--color-text-light); margin-bottom: 10px; }
        .news-card .meta .cat {
            background: rgba(201,168,76,0.1);
            color: var(--color-accent-dark);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 500;
        }
        .news-card h3 { font-size: 18px; font-weight: 600; color: var(--color-primary); margin-bottom: 10px; line-height: 1.4; }
        .news-card p { font-size: 14px; color: var(--color-text-light); line-height: 1.6; margin-bottom: 16px; }
        .news-card .read-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card .read-more:hover { gap: 10px; }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; text-align: center; }
        .stat-item { padding: 40px 20px; }
        .stat-item .number { font-size: 44px; font-weight: 700; color: var(--color-accent); line-height: 1.2; }
        .stat-item .label { font-size: 15px; color: rgba(255,255,255,0.65); margin-top: 8px; }
        .stat-item .desc { font-size: 13px; color: rgba(255,255,255,0.4); margin-top: 4px; }

        /* ===== 流程/时间线 ===== */
        .process-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; position: relative; }
        .process-step {
            text-align: center;
            padding: 36px 20px;
            position: relative;
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        .process-step h4 { font-size: 18px; font-weight: 600; color: var(--color-primary); margin-bottom: 8px; }
        .process-step p { font-size: 14px; color: var(--color-text-light); line-height: 1.6; }
        .process-step::after {
            content: '';
            position: absolute;
            top: 42px;
            right: -12px;
            width: 24px;
            height: 2px;
            background: var(--color-border);
        }
        .process-step:last-child::after { display: none; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 20px 0;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 17px;
            font-weight: 500;
            color: var(--color-primary);
            cursor: pointer;
            padding: 8px 0;
            gap: 16px;
        }
        .faq-question i { color: var(--color-accent); transition: var(--transition); font-size: 16px; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: var(--transition);
            color: var(--color-text-light);
            line-height: 1.7;
            font-size: 15px;
        }
        .faq-answer.open { max-height: 300px; padding-bottom: 16px; }

        /* ===== CTA ===== */
        .cta-wrap {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-wrap::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
        }
        .cta-content { position: relative; z-index: 1; }
        .cta-content h2 { font-size: 34px; font-weight: 700; color: var(--color-text-inverse); margin-bottom: 12px; }
        .cta-content p { font-size: 17px; color: rgba(255,255,255,0.7); margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }
        .cta-content .btn-primary { background: var(--color-accent); color: var(--color-primary-dark); font-size: 16px; padding: 16px 40px; }
        .cta-content .btn-primary:hover { background: var(--color-accent-light); }
        .cta-meta { margin-top: 20px; font-size: 14px; color: rgba(255,255,255,0.4); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .site-logo { color: var(--color-text-inverse); font-size: 24px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 16px; max-width: 300px; }
        .footer-social { display: flex; gap: 12px; margin-top: 20px; }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.5);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--color-accent); color: var(--color-primary-dark); }
        .footer-col h4 { font-size: 15px; font-weight: 600; color: var(--color-text-inverse); margin-bottom: 20px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.55); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--color-accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.35);
        }

        /* ===== 暂无数据 ===== */
        .empty-state { text-align: center; padding: 40px 20px; color: var(--color-text-light); }
        .empty-state i { font-size: 40px; color: var(--color-border); margin-bottom: 16px; display: block; }
        .empty-state p { font-size: 15px; }

        /* ===== 移动端响应式 ===== */
        @media (max-width: 1024px) {
            .service-grid { grid-template-columns: repeat(2,1fr); }
            .news-grid { grid-template-columns: repeat(2,1fr); }
            .stats-grid { grid-template-columns: repeat(2,1fr); }
            .process-grid { grid-template-columns: repeat(2,1fr); }
            .process-step::after { display: none; }
            .footer-grid { grid-template-columns: repeat(2,1fr); }
            .hero h1 { font-size: 42px; }
        }

        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .main-nav a { font-size: 16px; padding: 8px 0; }
            .nav-cta { align-self: flex-start; }
            .mobile-toggle { display: flex; }
            .hero h1 { font-size: 32px; }
            .hero p { font-size: 16px; }
            .hero-stats { flex-direction: column; gap: 24px; }
            .hero-stat h3 { font-size: 26px; }
            .about-wrap { grid-template-columns: 1fr; gap: 32px; }
            .about-features { grid-template-columns: 1fr; }
            .service-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2,1fr); gap: 16px; }
            .stat-item .number { font-size: 32px; }
            .process-grid { grid-template-columns: 1fr 1fr; }
            .section { padding: 60px 0; }
            .section-title { font-size: 28px; }
            .cta-wrap { padding: 40px 24px; }
            .cta-content h2 { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .hero h1 { font-size: 28px; }
            .hero-actions { flex-direction: column; }
            .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .process-grid { grid-template-columns: 1fr; }
            .hero-stats { gap: 16px; }
            .container { padding: 0 16px; }
        }

        /* ===== 辅助 ===== */
        .text-accent { color: var(--color-accent); }
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-32 { margin-bottom: 32px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* Foundation 覆盖 */
        .grid-container { max-width: var(--container-max); padding-left: 24px; padding-right: 24px; }
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .cell { padding: 0 12px; }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #0f1724;
            --color-primary-light: #1a2332;
            --color-primary-dark: #080c14;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-accent-dark: #d97706;
            --color-text: #f1f5f9;
            --color-text-muted: #94a3b8;
            --color-text-dark: #0f1724;
            --color-bg: #0f1724;
            --color-bg-card: rgba(255, 255, 255, 0.04);
            --color-bg-card-hover: rgba(255, 255, 255, 0.08);
            --color-border: rgba(255, 255, 255, 0.10);
            --color-border-light: rgba(255, 255, 255, 0.18);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(245, 158, 11, 0.15);
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 32px;
            --space-lg: 64px;
            --space-xl: 100px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-accent-light);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        ul {
            list-style: none;
        }

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

        /* ========== Typography ========== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
        }
        h3 {
            font-size: clamp(1.3rem, 2.5vw, 1.8rem);
        }
        h4 {
            font-size: 1.2rem;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: rgba(245, 158, 11, 0.12);
            padding: 4px 16px;
            border-radius: 100px;
            margin-bottom: var(--space-sm);
            border: 1px solid rgba(245, 158, 11, 0.2);
        }

        .text-muted {
            color: var(--color-text-muted);
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 18px 0;
            background: rgba(15, 23, 36, 0.82);
            backdrop-filter: blur(24px) saturate(1.2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition), padding var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }

        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.03em;
            line-height: 1;
            white-space: nowrap;
        }
        .site-logo span.dot {
            color: var(--color-accent);
        }
        .site-logo .tagline {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
            display: block;
            margin-top: 2px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .main-nav a:hover {
            color: var(--color-text);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--color-text);
        }
        .main-nav a.active::after {
            width: 100%;
            background: var(--color-accent);
        }
        .main-nav a.nav-cta {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            padding: 10px 24px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.25);
        }
        .main-nav a.nav-cta::after {
            display: none;
        }
        .main-nav a.nav-cta:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.35);
            color: var(--color-primary-dark);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--color-text);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px;
            line-height: 1;
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            padding: 180px 0 100px;
            background: var(--color-primary-dark);
            overflow: hidden;
            min-height: 60vh;
            display: flex;
            align-items: center;
        }
        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
            transform: scale(1.05);
        }
        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 36, 0.92) 0%, rgba(15, 23, 36, 0.60) 50%, rgba(15, 23, 36, 0.88) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-accent);
            background: rgba(245, 158, 11, 0.10);
            border: 1px solid rgba(245, 158, 11, 0.18);
            padding: 6px 18px;
            border-radius: 100px;
            margin-bottom: var(--space-sm);
        }
        .page-hero .hero-badge i {
            font-size: 0.7rem;
        }
        .page-hero h1 {
            max-width: 800px;
            margin-bottom: var(--space-sm);
        }
        .page-hero .hero-sub {
            font-size: 1.2rem;
            color: var(--color-text-muted);
            max-width: 620px;
            margin-bottom: var(--space-md);
            line-height: 1.6;
        }
        .page-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            align-items: center;
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition);
            line-height: 1.2;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            box-shadow: 0 4px 24px rgba(245, 158, 11, 0.30);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            color: var(--color-primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.40);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border: 1.5px solid rgba(255, 255, 255, 0.20);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.12);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.85rem;
        }

        /* ========== Section ========== */
        .section {
            padding: var(--space-xl) 0;
        }
        .section-dark {
            background: var(--color-primary-light);
        }
        .section-darker {
            background: var(--color-primary-dark);
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto var(--space-lg);
        }
        .section-header h2 {
            margin-bottom: var(--space-sm);
        }
        .section-header p {
            color: var(--color-text-muted);
            font-size: 1.1rem;
        }

        /* ========== Cards ========== */
        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            backdrop-filter: blur(4px);
        }
        .card:hover {
            background: var(--color-bg-card-hover);
            border-color: var(--color-border-light);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .card .card-icon {
            font-size: 2.2rem;
            color: var(--color-accent);
            margin-bottom: var(--space-sm);
            display: inline-block;
        }
        .card h3 {
            margin-bottom: 10px;
        }
        .card p {
            color: var(--color-text-muted);
            font-size: 0.95rem;
        }
        .card .card-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: rgba(245, 158, 11, 0.10);
            padding: 2px 12px;
            border-radius: 100px;
            margin-bottom: 12px;
            border: 1px solid rgba(245, 158, 11, 0.10);
        }

        /* Cards with image */
        .card-cover {
            padding: 0;
            overflow: hidden;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .card-cover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border-light);
        }
        .card-cover .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--color-border);
        }
        .card-cover .cover-body {
            padding: 24px 22px 26px;
        }
        .card-cover .cover-body h3 {
            margin-bottom: 8px;
            font-size: 1.15rem;
        }
        .card-cover .cover-body p {
            color: var(--color-text-muted);
            font-size: 0.92rem;
            margin-bottom: 12px;
        }
        .card-cover .cover-body .domain-name {
            font-family: 'SF Mono', 'Fira Code', monospace;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: -0.02em;
        }
        .card-cover .cover-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--color-border);
        }
        .card-cover .cover-meta .price {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
        }
        .card-cover .cover-meta .badge {
            font-size: 0.75rem;
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(245, 158, 11, 0.10);
            color: var(--color-accent);
            border: 1px solid rgba(245, 158, 11, 0.10);
        }

        /* ========== Grid ========== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* ========== Steps ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: background var(--transition), transform var(--transition), border-color var(--transition);
        }
        .step-item:hover {
            background: var(--color-bg-card-hover);
            border-color: var(--color-border-light);
            transform: translateY(-4px);
        }
        .step-item .step-number {
            font-size: 3rem;
            font-weight: 800;
            color: rgba(245, 158, 11, 0.12);
            line-height: 1;
            margin-bottom: 8px;
            font-family: 'SF Mono', monospace;
        }
        .step-item h4 {
            margin-bottom: 8px;
            font-size: 1.05rem;
        }
        .step-item p {
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }
        .step-item .step-arrow {
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-accent);
            font-size: 1.4rem;
            opacity: 0.3;
        }
        .steps-grid .step-item:last-child .step-arrow {
            display: none;
        }

        /* ========== Stats ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: background var(--transition), transform var(--transition);
        }
        .stat-item:hover {
            background: var(--color-bg-card-hover);
            transform: translateY(-4px);
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition), background var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
            background: var(--color-bg-card-hover);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            color: var(--color-text);
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            font-size: 0.85rem;
            color: var(--color-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--color-text-muted);
            font-size: 0.94rem;
            line-height: 1.7;
        }
        .faq-item .faq-answer p {
            margin-bottom: 8px;
        }
        .faq-item .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--color-primary-light);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: var(--space-lg) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(245, 158, 11, 0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            margin-bottom: var(--space-sm);
        }
        .cta-section .cta-text {
            color: var(--color-text-muted);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto var(--space-md);
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-primary-dark);
            padding: var(--space-lg) 0 var(--space-md);
            border-top: 1px solid var(--color-border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: var(--space-lg);
        }
        .footer-brand .site-logo {
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
            margin-bottom: var(--space-sm);
        }
        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--color-text-muted);
            font-size: 1.1rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            border: 1px solid var(--color-border);
        }
        .footer-social a:hover {
            background: rgba(245, 158, 11, 0.12);
            color: var(--color-accent);
            transform: translateY(-3px);
            border-color: rgba(245, 158, 11, 0.2);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            color: var(--color-text);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: var(--space-md);
            border-top: 1px solid var(--color-border);
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(15, 23, 36, 0.98);
                backdrop-filter: blur(24px);
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--color-border);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                font-size: 1rem;
                padding: 8px 0;
            }
            .main-nav a.nav-cta {
                align-self: flex-start;
                margin-top: 4px;
            }
            .menu-toggle {
                display: block;
            }

            .page-hero {
                padding: 140px 0 70px;
                min-height: 50vh;
            }
            .page-hero h1 {
                font-size: clamp(1.8rem, 6vw, 2.6rem);
            }
            .page-hero .hero-sub {
                font-size: 1rem;
            }

            .section {
                padding: var(--space-lg) 0;
            }
            .section-header {
                margin-bottom: var(--space-md);
            }

            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid .step-item .step-arrow {
                display: none;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .card {
                padding: 24px 20px;
            }
            .card-cover .cover-img {
                height: 160px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 120px 0 50px;
                min-height: 40vh;
            }
            .page-hero .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .page-hero .hero-actions .btn {
                justify-content: center;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }
            .site-logo {
                font-size: 1.3rem;
            }
            .main-nav a.nav-cta {
                padding: 8px 18px;
                font-size: 0.8rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .faq-item summary {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
            }
            .card-cover .cover-body {
                padding: 18px 16px 20px;
            }
        }

        /* ========== Utility ========== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: var(--space-sm);
        }
        .mt-md {
            margin-top: var(--space-md);
        }
        .mb-md {
            margin-bottom: var(--space-md);
        }
        .gap-sm {
            gap: var(--space-sm);
        }
        .gap-md {
            gap: var(--space-md);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ========== Foundation Overrides ========== */
        .row {
            max-width: 1200px;
            margin: 0 auto;
        }
        .columns,
        .column {
            padding-left: 12px;
            padding-right: 12px;
        }
        .site-header .row {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #0f1a2e;
            --color-primary-light: #1a2a4a;
            --color-primary-dark: #0a1120;
            --color-accent: #d4a843;
            --color-accent-light: #e8c46a;
            --color-accent-dark: #b8912e;
            --color-bg: #f5f6f8;
            --color-bg-alt: #eef0f3;
            --color-bg-dark: #0f1a2e;
            --color-text: #1c1c1e;
            --color-text-light: #6b7280;
            --color-text-inverse: #ffffff;
            --color-border: #e2e5ea;
            --color-border-light: #f0f1f3;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-error: #ef4444;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.16);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Georgia', 'Times New Roman', serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --max-width: 1200px;
            --content-width: 820px;
        }

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

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

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        .container-sm {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: var(--max-width);
            padding-left: var(--space-md);
            padding-right: var(--space-md);
        }

        .grid-x {
            margin-left: -0.75rem;
            margin-right: -0.75rem;
        }

        .cell {
            padding-left: 0.75rem;
            padding-right: 0.75rem;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 26, 46, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(15, 26, 46, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text-inverse);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .site-logo .dot {
            color: var(--color-accent);
        }
        .site-logo .tagline {
            font-size: 0.65rem;
            font-weight: 400;
            opacity: 0.6;
            margin-left: 8px;
            letter-spacing: 0.3px;
            display: none;
        }
        @media (min-width: 640px) {
            .site-logo .tagline {
                display: inline;
            }
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .main-nav a {
            position: relative;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
            letter-spacing: 0.3px;
        }

        .main-nav a:hover {
            color: var(--color-text-inverse);
            background: rgba(255, 255, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--color-text-inverse);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .main-nav a.nav-cta {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-weight: 600;
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-sm);
            margin-left: 0.5rem;
        }

        .main-nav a.nav-cta:hover {
            background: var(--color-accent-light);
            color: var(--color-primary-dark);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--color-text-inverse);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.25rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 900px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15, 26, 46, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--space-md);
                gap: 0.5rem;
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
                pointer-events: none;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .main-nav a {
                width: 100%;
                padding: 0.75rem 1rem;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }

            .main-nav a.active::after {
                display: none;
            }

            .main-nav a.active {
                background: rgba(212, 168, 67, 0.15);
                color: var(--color-accent);
            }

            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 0.5rem;
                text-align: center;
            }

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 64px;
                padding: 0 var(--space-sm);
            }
            .site-logo {
                font-size: 1.3rem;
            }
            .main-nav {
                top: 64px;
                padding: var(--space-sm);
            }
        }

        /* ===== Article Hero / Banner ===== */
        .article-hero {
            position: relative;
            padding-top: 72px;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: var(--color-primary-dark);
            overflow: hidden;
        }

        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }

        .article-hero:hover .article-hero-bg {
            transform: scale(1);
        }

        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92) 0%, rgba(15, 26, 46, 0.6) 60%, rgba(15, 26, 46, 0.3) 100%);
        }

        .article-hero .container-sm {
            position: relative;
            z-index: 2;
            padding-top: var(--space-lg);
            padding-bottom: var(--space-lg);
        }

        .article-hero .post-category {
            display: inline-block;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 0.3rem 1rem;
            border-radius: var(--radius-sm);
            margin-bottom: var(--space-sm);
        }

        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-text-inverse);
            line-height: 1.2;
            margin-bottom: var(--space-sm);
            max-width: 90%;
            letter-spacing: -0.02em;
        }

        .article-hero .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            align-items: center;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
        }

        .article-hero .post-meta span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .article-hero .post-meta i {
            font-size: 0.8rem;
            opacity: 0.7;
        }

        .article-hero .post-meta .reading-time {
            background: rgba(255, 255, 255, 0.08);
            padding: 0.2rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
        }

        @media (max-width: 768px) {
            .article-hero {
                min-height: 320px;
                padding-top: 64px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
                max-width: 100%;
            }
            .article-hero .post-meta {
                gap: 0.75rem;
                font-size: 0.8rem;
                flex-wrap: wrap;
            }
            .article-hero .container-sm {
                padding-top: var(--space-md);
                padding-bottom: var(--space-md);
            }
        }

        @media (max-width: 520px) {
            .article-hero {
                min-height: 260px;
                padding-top: 64px;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero .post-meta {
                font-size: 0.75rem;
                gap: 0.5rem;
            }
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: var(--space-lg) 0;
        }

        .article-body {
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: var(--space-lg) var(--space-md);
            margin-bottom: var(--space-md);
        }

        .article-body .post-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--color-text);
        }

        .article-body .post-content p {
            margin-bottom: 1.5rem;
        }

        .article-body .post-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: var(--color-primary);
        }

        .article-body .post-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: var(--color-primary-light);
        }

        .article-body .post-content ul,
        .article-body .post-content ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }

        .article-body .post-content ul li {
            list-style: disc;
            margin-bottom: 0.4rem;
        }

        .article-body .post-content ol li {
            list-style: decimal;
            margin-bottom: 0.4rem;
        }

        .article-body .post-content blockquote {
            border-left: 4px solid var(--color-accent);
            background: var(--color-bg-alt);
            padding: 1.25rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--color-text-light);
        }

        .article-body .post-content pre {
            background: var(--color-primary-dark);
            color: #e5e7eb;
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5rem 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-body .post-content code {
            font-family: 'Fira Code', 'Cascadia Code', monospace;
            font-size: 0.9em;
        }

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

        .article-body .post-content a {
            color: var(--color-accent-dark);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body .post-content a:hover {
            color: var(--color-accent);
        }

        /* Article Tags & Share */
        .article-footer-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            margin-top: var(--space-md);
            padding-top: var(--space-md);
            border-top: 1px solid var(--color-border);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .article-tags .tag {
            display: inline-block;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            font-size: 0.8rem;
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .article-tags .tag:hover {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            border-color: var(--color-accent);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.85rem;
            color: var(--color-text-light);
        }

        .article-share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            font-size: 0.9rem;
        }

        .article-share a:hover {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .article-body {
                padding: var(--space-md) var(--space-sm);
                border-radius: var(--radius-md);
            }
            .article-body .post-content {
                font-size: 0.95rem;
                line-height: 1.8;
            }
            .article-body .post-content h2 {
                font-size: 1.3rem;
            }
            .article-body .post-content h3 {
                font-size: 1.1rem;
            }
            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .article-body {
                padding: var(--space-sm);
                border-radius: var(--radius-sm);
            }
            .article-body .post-content {
                font-size: 0.9rem;
            }
            .article-tags .tag {
                font-size: 0.7rem;
                padding: 0.2rem 0.7rem;
            }
            .article-share a {
                width: 32px;
                height: 32px;
                font-size: 0.8rem;
            }
        }

        /* ===== Not Found ===== */
        .not-found-block {
            text-align: center;
            padding: var(--space-xl) var(--space-md);
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }

        .not-found-block .not-found-icon {
            font-size: 4rem;
            color: var(--color-text-light);
            opacity: 0.3;
            margin-bottom: var(--space-sm);
        }

        .not-found-block h2 {
            font-size: 1.6rem;
            color: var(--color-text);
            margin-bottom: var(--space-xs);
        }

        .not-found-block p {
            color: var(--color-text-light);
            margin-bottom: var(--space-md);
        }

        .not-found-block .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-primary);
            color: var(--color-text-inverse);
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: all var(--transition);
        }

        .not-found-block .btn-back:hover {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            transform: translateY(-2px);
        }

        /* ===== Related Articles ===== */
        .related-section {
            padding: var(--space-lg) 0 var(--space-xl);
            background: var(--color-bg);
        }

        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--space-xs);
        }

        .related-section .section-subtitle {
            color: var(--color-text-light);
            font-size: 1rem;
            margin-bottom: var(--space-md);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

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

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .related-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .related-card .card-img .card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.75rem;
            border-radius: var(--radius-sm);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .related-card .card-body {
            padding: 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 0.5rem;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover .card-body h3 {
            color: var(--color-accent-dark);
        }

        .related-card .card-body p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .related-card .card-body .card-meta {
            font-size: 0.75rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            border-top: 1px solid var(--color-border-light);
            padding-top: 0.75rem;
            margin-top: auto;
        }

        .related-card .card-body .card-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        .related-card .card-body .card-meta i {
            font-size: 0.7rem;
            opacity: 0.6;
        }

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

        @media (max-width: 600px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .related-section .section-title {
                font-size: 1.4rem;
            }
            .related-card .card-body h3 {
                font-size: 0.95rem;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--color-primary-dark);
            padding: var(--space-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }

        .cta-section .container-sm {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-inverse);
            margin-bottom: var(--space-xs);
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto var(--space-md);
        }

        .cta-section .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--space-sm);
        }

        .cta-section .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }

        .cta-section .btn-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 168, 67, 0.3);
            color: var(--color-primary-dark);
        }

        .cta-section .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--color-text-inverse);
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            transition: all var(--transition);
            cursor: pointer;
        }

        .cta-section .btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(212, 168, 67, 0.08);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: var(--space-lg) 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .cta-section .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-section .btn-primary,
            .cta-section .btn-secondary {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--space-lg) 0 var(--space-md);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }

        .site-footer .footer-brand .site-logo {
            font-size: 1.4rem;
            margin-bottom: var(--space-sm);
            display: inline-block;
        }

        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            margin-bottom: var(--space-sm);
            max-width: 360px;
        }

        .site-footer .footer-social {
            display: flex;
            gap: 0.75rem;
        }

        .site-footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: all var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-footer .footer-social a:hover {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .site-footer .footer-col h4 {
            color: var(--color-text-inverse);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.5px;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: var(--space-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.8rem;
            opacity: 0.6;
        }

        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 600px) {
            .site-footer {
                padding: var(--space-md) 0 var(--space-sm);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.4rem;
            }
            .site-footer .footer-social {
                justify-content: center;
            }
        }

        /* ===== Utilities ===== */
        .text-center {
            text-align: center;
        }

        .mb-sm {
            margin-bottom: var(--space-sm);
        }
        .mb-md {
            margin-bottom: var(--space-md);
        }
        .mb-lg {
            margin-bottom: var(--space-lg);
        }

        .pt-lg {
            padding-top: var(--space-lg);
        }
        .pb-lg {
            padding-bottom: var(--space-lg);
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in-up {
            animation: fadeInUp 0.7s ease forwards;
        }

        .fade-in-up-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-in-up-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-in-up-delay-3 {
            animation-delay: 0.3s;
        }

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

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

        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-text-light);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--color-accent);
            color: var(--color-primary-dark);
        }

/* roulang page: category2 */
/* ====================
           :root 设计变量
           ==================== */
        :root {
            --color-primary: #1a2a3a;
            --color-primary-light: #2c3e50;
            --color-secondary: #0d6efd;
            --color-accent: #f5a623;
            --color-accent-light: #ffd966;
            --color-bg: #f8fafc;
            --color-bg-alt: #eef2f7;
            --color-bg-dark: #0f1a2a;
            --color-text: #1e293b;
            --color-text-light: #64748b;
            --color-text-inverse: #f1f5f9;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-white: #ffffff;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-error: #ef4444;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--color-primary);
            font-weight: 700;
        }

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

        @media screen and (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ====================
           导航栏 - 极简高端文字导航
           ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--color-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 2px;
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: var(--color-primary);
            opacity: 0.85;
        }
        .site-logo .dot {
            color: var(--color-accent);
            font-weight: 700;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-light);
            text-decoration: none;
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-secondary);
            transition: var(--transition);
            border-radius: 2px;
        }

        .main-nav a:hover {
            color: var(--color-primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            width: 100%;
            background: var(--color-accent);
            height: 2.5px;
        }

        .main-nav .nav-cta {
            background: var(--color-secondary);
            color: var(--color-white) !important;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(13, 110, 253, 0.25);
        }
        .main-nav .nav-cta::after {
            display: none;
        }
        .main-nav .nav-cta:hover {
            background: #0b5ed7;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(13, 110, 253, 0.35);
            color: var(--color-white) !important;
        }

        /* 移动端菜单切换 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--color-bg-alt);
        }

        @media screen and (max-width: 868px) {
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                gap: 0;
                padding: 12px 24px 24px;
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 14px 0;
                font-size: 1rem;
                border-bottom: 1px solid var(--color-border-light);
                width: 100%;
                text-align: left;
            }
            .main-nav a:last-of-type {
                border-bottom: none;
            }
            .main-nav a::after {
                display: none;
            }
            .main-nav a.active {
                color: var(--color-secondary);
                font-weight: 700;
            }
            .main-nav .nav-cta {
                margin-top: 12px;
                text-align: center;
                padding: 12px 22px;
                width: 100%;
            }
            .menu-toggle {
                display: block;
            }
        }

        /* ====================
           Hero / 页面横幅
           ==================== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg-dark) 100%);
            overflow: hidden;
            padding: 80px 0 60px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }

        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(13, 110, 253, 0.15) 0%, transparent 70%);
        }

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

        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-white);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.7;
            font-weight: 400;
        }

        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.2);
            color: var(--color-accent-light);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(245, 166, 35, 0.25);
            backdrop-filter: blur(4px);
        }

        @media screen and (max-width: 768px) {
            .page-hero {
                min-height: 240px;
                padding: 60px 0 40px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }

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

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

        .section-dark {
            background: var(--color-primary);
            color: var(--color-text-inverse);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--color-white);
        }
        .section-dark .text-muted {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-dark .section-title {
            color: var(--color-white);
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 600px;
            margin: 0 auto 48px;
            text-align: center;
            line-height: 1.7;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }

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

        .text-muted {
            color: var(--color-text-light);
        }

        @media screen and (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ====================
           卡片系统
           ==================== */
        .card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(13, 110, 253, 0.15);
        }

        .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            background: var(--color-bg-alt);
        }

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

        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
            line-height: 1.4;
        }

        .card-body p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.6;
            flex: 1;
        }

        .card-body .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 12px;
        }

        .card-body .card-tags span {
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 500;
        }

        .card-footer-link {
            padding: 12px 24px 16px;
            border-top: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--color-secondary);
            transition: var(--transition);
        }
        .card-footer-link i {
            transition: var(--transition);
            font-size: 0.8rem;
        }
        .card:hover .card-footer-link i {
            transform: translateX(4px);
        }

        /* ====================
           网格 / 分栏
           ==================== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        @media screen and (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media screen and (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ====================
           按钮
           ==================== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 12px 28px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.2;
            letter-spacing: 0.3px;
            background: var(--color-secondary);
            color: var(--color-white);
            box-shadow: 0 2px 8px rgba(13, 110, 253, 0.2);
        }
        .btn:hover {
            background: #0b5ed7;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 110, 253, 0.3);
            color: var(--color-white);
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-secondary);
            border: 2px solid var(--color-secondary);
            box-shadow: none;
        }
        .btn-secondary:hover {
            background: var(--color-secondary);
            color: var(--color-white);
            box-shadow: 0 4px 16px rgba(13, 110, 253, 0.2);
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-primary);
            box-shadow: 0 2px 8px rgba(245, 166, 35, 0.3);
        }
        .btn-accent:hover {
            background: #e8991a;
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.4);
            color: var(--color-primary);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.82rem;
        }

        /* ====================
           徽章 / 标签
           ==================== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 50px;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            letter-spacing: 0.3px;
        }
        .badge-primary {
            background: rgba(13, 110, 253, 0.12);
            color: var(--color-secondary);
        }
        .badge-accent {
            background: rgba(245, 166, 35, 0.15);
            color: #c47d14;
        }
        .badge-success {
            background: rgba(16, 185, 129, 0.12);
            color: var(--color-success);
        }

        /* ====================
           统计数字
           ==================== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 0.88rem;
            color: var(--color-text-light);
            font-weight: 500;
        }
        @media screen and (max-width: 768px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ====================
           流程 / 时间线
           ==================== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: var(--transition);
            counter-increment: step;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-secondary);
            color: var(--color-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(13, 110, 253, 0.25);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }
        @media screen and (max-width: 868px) {
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        @media screen and (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ====================
           FAQ
           ==================== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(13, 110, 253, 0.2);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question i {
            color: var(--color-secondary);
            transition: var(--transition);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--color-text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ====================
           CTA 区块
           ==================== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg-dark) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            font-size: 1.05rem;
            padding: 16px 40px;
        }
        @media screen and (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ====================
           页脚
           ==================== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand .site-logo {
            color: var(--color-white);
            font-size: 1.6rem;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .site-logo .dot {
            color: var(--color-accent);
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--color-secondary);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--color-accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom span {
            line-height: 1.5;
        }

        @media screen and (max-width: 868px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media screen and (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

        /* ====================
           特色区块 / 图文混排
           ==================== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-block.reverse {
            direction: rtl;
        }
        .feature-block.reverse>* {
            direction: ltr;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--color-bg-alt);
        }
        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .feature-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-primary);
        }
        .feature-content p {
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            font-size: 0.95rem;
        }
        .feature-content ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .feature-content ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--color-text);
        }
        .feature-content ul li i {
            color: var(--color-success);
            margin-top: 4px;
            flex-shrink: 0;
        }

        @media screen and (max-width: 868px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .feature-block.reverse {
                direction: ltr;
            }
            .feature-image img {
                min-height: 220px;
            }
            .feature-content h3 {
                font-size: 1.3rem;
            }
        }

        /* ====================
           列表样式
           ==================== */
        .list-check {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .list-check li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--color-text);
        }
        .list-check li i {
            color: var(--color-success);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ====================
           分隔线
           ==================== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 4px;
            margin: 0 auto 24px;
        }
        .divider.left {
            margin: 0 0 24px 0;
        }

        /* ====================
           技术栈标签
           ==================== */
        .tech-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }
        .tech-tags span {
            background: var(--color-bg-alt);
            color: var(--color-text);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .tech-tags span:hover {
            border-color: var(--color-secondary);
            background: rgba(13, 110, 253, 0.06);
            transform: translateY(-1px);
        }

        /* ====================
           案例卡片 加强
           ==================== */
        .case-card .card-image {
            aspect-ratio: 16/10;
        }
        .case-card .card-body .case-meta {
            display: flex;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-bottom: 8px;
        }
        .case-card .card-body .case-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ====================
           移动端微调
           ==================== */
        @media screen and (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
            .btn-lg {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 16px 18px;
            }
            .faq-answer {
                font-size: 0.85rem;
            }
        }

        /* ====================
           打印 / 辅助
           ==================== */
        @media print {
            .site-header {
                position: static;
                backdrop-filter: none;
            }
            .site-footer {
                break-inside: avoid;
            }
            .cta-section {
                background: var(--color-primary) !important;
            }
        }

        /* Foundation 覆盖：避免与框架样式冲突 */
        .grid-container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media screen and (max-width: 768px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .cell {
            margin-bottom: 0;
        }
        .grid-x>.cell {
            padding: 0;
        }
        .grid-margin-x>.cell {
            margin-left: 0;
            margin-right: 0;
        }

        /* 保持 Foundation 网格与自定义一致 */
        .grid-padding-x .cell {
            padding-left: 0;
            padding-right: 0;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a1a2e;
            --color-primary-light: #16213e;
            --color-accent: #e94560;
            --color-accent-hover: #d63851;
            --color-accent-soft: rgba(233, 69, 96, 0.08);
            --color-gold: #f0a500;
            --color-bg: #f8f9fc;
            --color-bg-alt: #eef0f5;
            --color-bg-dark: #0f0f1a;
            --color-text: #1a1a2e;
            --color-text-light: #5a5a7a;
            --color-text-inverse: #ffffff;
            --color-border: rgba(26, 26, 46, 0.10);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --space-section: 5rem;
            --space-section-mobile: 3rem;
            --font-serif: 'Georgia', 'Times New Roman', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.7;
            font-size: 1rem;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--color-accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media screen and (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-primary);
        }
        .section-title {
            font-size: 2.25rem;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            max-width: 640px;
            margin: 0 auto 3rem auto;
            text-align: center;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-header .section-title {
            position: relative;
            display: inline-block;
        }
        .section-header .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--color-accent);
            margin: 0.75rem auto 0;
            border-radius: 4px;
        }

        @media screen and (max-width: 768px) {
            .section-title {
                font-size: 1.65rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 2rem;
            }
            .section-header {
                margin-bottom: 2.5rem;
            }
        }

        /* ===== Header / Nav (极简高端文字导航) ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            color: var(--color-primary);
            text-decoration: none;
            line-height: 1;
        }
        .site-logo:hover {
            color: var(--color-primary);
        }
        .site-logo span {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .main-nav a {
            position: relative;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: var(--color-accent-soft);
        }
        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .main-nav a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            margin-left: 0.5rem;
        }
        .main-nav a.nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .main-nav a.nav-cta::after {
            display: none;
        }

        /* Mobile hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 3px;
            transition: var(--transition);
        }

        @media screen and (max-width: 868px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 1.5rem 1.5rem 2rem;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                gap: 0.5rem;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                width: 100%;
                text-align: center;
            }
            .main-nav a.active::after {
                bottom: 4px;
                left: 2rem;
                right: 2rem;
            }
            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 0.5rem;
                text-align: center;
            }
        }
        @media screen and (max-width: 480px) {
            .site-header .container {
                height: 60px;
            }
            .site-logo {
                font-size: 1.3rem;
            }
            .main-nav {
                top: 60px;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 5rem 0 4rem;
            background: var(--color-bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: var(--color-text-inverse);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.88) 40%, rgba(233, 69, 96, 0.25) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
            line-height: 1.15;
        }
        .page-banner .banner-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.6;
        }
        .page-banner .breadcrumb {
            display: flex;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 1.5rem;
            align-items: center;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.9);
        }

        @media screen and (max-width: 768px) {
            .page-banner {
                padding: 3.5rem 0 2.5rem;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .banner-sub {
                font-size: 1rem;
            }
        }
        @media screen and (max-width: 480px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-sub {
                font-size: 0.95rem;
            }
        }

        /* ===== Section spacing ===== */
        section {
            padding: var(--space-section) 0;
        }
        @media screen and (max-width: 768px) {
            section {
                padding: var(--space-section-mobile) 0;
            }
        }

        .bg-alt {
            background: var(--color-bg-alt);
        }
        .bg-white {
            background: #ffffff;
        }
        .bg-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-inverse);
        }
        .bg-dark .section-title {
            color: #fff;
        }
        .bg-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Cards ===== */
        .card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.75rem;
            transition: var(--transition);
            border: 1px solid var(--color-border);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card .card-icon {
            font-size: 2.2rem;
            color: var(--color-accent);
            margin-bottom: 1rem;
        }
        .card h3 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        .card-feature {
            text-align: center;
            padding: 2.5rem 1.5rem;
        }
        .card-feature .card-icon {
            font-size: 2.6rem;
            margin-bottom: 1.25rem;
            display: inline-block;
        }

        /* ===== Grid helpers ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 2rem;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 1.5rem;
        }

        @media screen and (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media screen and (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-light);
            margin-top: 0.4rem;
        }
        .bg-dark .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.7);
        }
        .bg-dark .stat-item .stat-number {
            color: var(--color-gold);
        }

        @media screen and (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }
        }
        @media screen and (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== Process / Timeline ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            counter-reset: step;
        }
        .process-step {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        @media screen and (max-width: 1024px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 480px) {
            .process-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }

        /* ===== Case cards ===== */
        .case-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            height: 100%;
        }
        .case-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .case-card .case-img {
            height: 200px;
            background: var(--color-bg-alt);
            overflow: hidden;
        }
        .case-card .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-card:hover .case-img img {
            transform: scale(1.05);
        }
        .case-card .case-body {
            padding: 1.5rem;
        }
        .case-card .case-body h4 {
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
        }
        .case-card .case-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }
        .case-card .case-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            margin-bottom: 0.5rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 1.25rem 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-primary);
            gap: 1rem;
            user-select: none;
        }
        .faq-question .faq-toggle {
            font-size: 1.2rem;
            color: var(--color-accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--color-text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 1rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 4.5rem 0;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            border-radius: 0;
        }
        .cta-section .section-title {
            color: #fff;
        }
        .cta-section .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 2rem;
        }
        .cta-btn {
            display: inline-block;
            padding: 0.9rem 2.8rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            background: #fff;
            border-radius: 50px;
            transition: var(--transition);
            text-decoration: none;
            box-shadow: var(--shadow-md);
        }
        .cta-btn:hover {
            background: var(--color-gold);
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .cta-btn-outline {
            display: inline-block;
            padding: 0.9rem 2.8rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.4);
            border-radius: 50px;
            transition: var(--transition);
            text-decoration: none;
            margin-left: 1rem;
        }
        .cta-btn-outline:hover {
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        @media screen and (max-width: 520px) {
            .cta-btn,
            .cta-btn-outline {
                display: block;
                width: 100%;
                max-width: 300px;
                margin: 0.5rem auto;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 4rem 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .site-logo {
            color: #fff;
            font-size: 1.6rem;
            margin-bottom: 1rem;
            display: inline-block;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 0.75rem;
            margin-top: 1.25rem;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--color-accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        @media screen and (max-width: 868px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .site-footer .footer-brand {
                grid-column: span 2;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
        }
        @media screen and (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer .footer-brand {
                grid-column: span 1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Service detail ===== */
        .service-detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .service-detail-grid .service-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .service-detail-grid .service-img img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }
        .service-detail-grid .service-text h3 {
            font-size: 1.6rem;
            margin-bottom: 1rem;
        }
        .service-detail-grid .service-text p {
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 1.2rem;
        }
        .service-detail-grid .service-text ul {
            margin: 0.5rem 0 1rem;
        }
        .service-detail-grid .service-text ul li {
            padding: 0.3rem 0;
            padding-left: 1.5rem;
            position: relative;
            color: var(--color-text-light);
        }
        .service-detail-grid .service-text ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-weight: 700;
        }

        @media screen and (max-width: 868px) {
            .service-detail-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .service-detail-grid .service-img img {
                height: 240px;
            }
            .service-detail-grid .service-text h3 {
                font-size: 1.35rem;
            }
        }

        /* ===== Tag / Badge ===== */
        .tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.9rem;
            border-radius: 50px;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            margin-right: 0.3rem;
            margin-bottom: 0.3rem;
        }
        .tag-gold {
            background: rgba(240, 165, 0, 0.12);
            color: var(--color-gold);
        }

        /* ===== Foundation overrides ===== */
        .grid-container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media screen and (max-width: 768px) {
            .grid-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ===== Extra utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }