/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a2a6c;
            --color-primary-light: #3a4a8c;
            --color-primary-dark: #0f1a4a;
            --color-accent: #f05a28;
            --color-accent-light: #f07a48;
            --color-accent-dark: #d04a18;
            --color-bg: #f8f9fc;
            --color-bg-alt: #eef0f6;
            --color-bg-dark: #0e1326;
            --color-text: #1a1a2e;
            --color-text-light: #4a4a6a;
            --color-text-muted: #8888aa;
            --color-border: #d8dce8;
            --color-white: #ffffff;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px 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, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --max-width: 1200px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-body);
            font-size: 1rem;
            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; border-radius: var(--radius-md); }
        a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-accent); }
        a:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.25; color: var(--color-text); }
        h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: var(--space-md); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--color-text-light); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
        .section { padding: var(--space-lg) 0; }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark { background: var(--color-bg-dark); color: var(--color-white); }
        .section-dark h2, .section-dark h3, .section-dark p { color: var(--color-white); }
        .text-center { text-align: center; }
        .text-muted { color: var(--color-text-muted); }

        /* ===== 按钮系统 ===== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
            padding: 0.75rem 2rem; border-radius: 50px; font-size: 1rem; font-weight: 600;
            border: 2px solid transparent; cursor: pointer; transition: all var(--transition);
            text-decoration: none; line-height: 1.4; white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent); color: var(--color-white); border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-dark); border-color: var(--color-accent-dark); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: none; }
        .btn-outline {
            background: transparent; color: var(--color-white); border-color: var(--color-white);
        }
        .btn-outline:hover {
            background: var(--color-white); color: var(--color-primary); transform: translateY(-2px); box-shadow: var(--shadow-md);
        }
        .btn-secondary {
            background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary);
        }
        .btn-secondary:hover {
            background: var(--color-primary-light); border-color: var(--color-primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md);
        }
        .btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }
        .btn-lg { padding: 1rem 2.5rem; font-size: 1.125rem; }

        /* ===== 导航 ===== */
        .site-header {
            background: rgba(14, 19, 38, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            transition: background var(--transition);
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
        .site-logo {
            font-size: 1.35rem; font-weight: 800; color: var(--color-white);
            letter-spacing: 0.5px; text-decoration: none; white-space: nowrap;
            background: linear-gradient(135deg, #f05a28, #ff8a50);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover { opacity: 0.85; color: var(--color-accent); }
        .nav-list { display: flex; align-items: center; gap: 0.25rem; }
        .nav-list a {
            display: block; padding: 0.5rem 1rem; font-size: 0.95rem; font-weight: 500;
            color: rgba(255, 255, 255, 0.75); border-radius: 8px; transition: all var(--transition);
            text-decoration: none;
        }
        .nav-list a:hover { color: var(--color-white); background: rgba(255, 255, 255, 0.08); }
        .nav-list a.active { color: var(--color-white); background: rgba(240, 90, 40, 0.2); }
        .nav-list a:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }
        .menu-toggle { display: none; background: none; border: none; color: var(--color-white); font-size: 1.5rem; cursor: pointer; padding: 0.25rem; border-radius: 6px; }
        .menu-toggle:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }

        /* ===== Hero ===== */
        .hero {
            min-height: 92vh; display: flex; align-items: center; position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 8rem 0 4rem; overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(14, 19, 38, 0.85) 0%, rgba(26, 42, 108, 0.70) 50%, rgba(14, 19, 38, 0.80) 100%);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 780px; }
        .hero-content h1 { color: var(--color-white); margin-bottom: 1rem; font-weight: 800; letter-spacing: -0.02em; }
        .hero-content .lead { font-size: clamp(1.1rem, 1.8vw, 1.35rem); color: rgba(255, 255, 255, 0.85); margin-bottom: 2rem; line-height: 1.6; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 0.5rem; }
        .hero-badge {
            display: inline-block; padding: 0.35rem 1.2rem; border-radius: 50px;
            background: rgba(240, 90, 40, 0.2); border: 1px solid rgba(240, 90, 40, 0.3);
            color: #ff8a50; font-size: 0.85rem; font-weight: 500; margin-bottom: 1.2rem;
        }

        /* ===== 板块通用 ===== */
        .section-title { text-align: center; margin-bottom: var(--space-lg); }
        .section-title h2 { margin-bottom: 0.75rem; }
        .section-title p { max-width: 640px; margin: 0 auto; color: var(--color-text-muted); font-size: 1.05rem; }

        /* ===== 卡片系统 ===== */
        .card {
            background: var(--color-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); transition: all var(--transition);
            overflow: hidden; height: 100%;
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .card-image { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius-md) var(--radius-md) 0 0; }
        .card-body { padding: 1.5rem; }
        .card-body h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
        .card-body p { font-size: 0.95rem; color: var(--color-text-light); margin-bottom: 0.75rem; }
        .card-tag {
            display: inline-block; padding: 0.2rem 0.8rem; border-radius: 50px;
            background: rgba(26, 42, 108, 0.08); color: var(--color-primary-light);
            font-size: 0.75rem; font-weight: 600; margin-bottom: 0.5rem;
        }

        /* ===== 特色图标卡片 ===== */
        .feature-card {
            background: var(--color-white); border-radius: var(--radius-md);
            padding: 2rem 1.8rem; box-shadow: var(--shadow-sm);
            transition: all var(--transition); height: 100%; text-align: center;
            border: 1px solid var(--color-border);
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .feature-icon {
            width: 64px; height: 64px; margin: 0 auto 1.2rem;
            display: flex; align-items: center; justify-content: center;
            border-radius: 16px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: var(--color-white); font-size: 1.6rem;
        }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
        .feature-card p { font-size: 0.92rem; color: var(--color-text-light); margin-bottom: 0; }

        /* ===== 统计数字 ===== */
        .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
        .stat-item { text-align: center; padding: 1.5rem; }
        .stat-number { font-size: clamp(2rem, 3.5vw, 3rem); font-weight: 800; color: var(--color-accent); line-height: 1.1; }
        .stat-label { font-size: 0.95rem; color: rgba(255, 255, 255, 0.75); margin-top: 0.5rem; }

        /* ===== 流程步骤 ===== */
        .step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; counter-reset: step; }
        .step-item {
            text-align: center; padding: 2rem 1.2rem; position: relative;
            background: var(--color-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); transition: all var(--transition);
        }
        .step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-number {
            width: 48px; height: 48px; margin: 0 auto 1rem;
            display: flex; align-items: center; justify-content: center;
            border-radius: 50%; background: var(--color-primary); color: var(--color-white);
            font-size: 1.2rem; font-weight: 700;
        }
        .step-item h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
        .step-item p { font-size: 0.9rem; color: var(--color-text-light); margin-bottom: 0; }

        /* ===== 资讯/列表 ===== */
        .news-list { display: grid; grid-template-columns: 1fr; gap: 1rem; }
        .news-item {
            display: flex; align-items: flex-start; gap: 1.2rem;
            background: var(--color-white); padding: 1.2rem 1.5rem;
            border-radius: var(--radius-sm); box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .news-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
        .news-meta { flex-shrink: 0; font-size: 0.8rem; color: var(--color-text-muted); min-width: 90px; }
        .news-title { font-size: 1rem; font-weight: 600; color: var(--color-text); text-decoration: none; transition: color var(--transition); }
        .news-title:hover { color: var(--color-accent); }
        .news-cat {
            display: inline-block; padding: 0.15rem 0.6rem; border-radius: 4px;
            background: rgba(240, 90, 40, 0.1); color: var(--color-accent);
            font-size: 0.7rem; font-weight: 600; margin-left: 0.5rem;
        }
        .news-summary { font-size: 0.9rem; color: var(--color-text-light); margin-top: 0.25rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

        /* ===== FAQ ===== */
        .faq-grid { max-width: 800px; margin: 0 auto; display: grid; gap: 0.75rem; }
        .faq-item {
            background: var(--color-white); border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm); overflow: hidden;
            border: 1px solid var(--color-border);
        }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 1.2rem 1.5rem; cursor: pointer; font-weight: 600;
            font-size: 1.02rem; color: var(--color-text);
            background: none; border: none; width: 100%; text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(0,0,0,0.02); }
        .faq-question:focus-visible { outline: 3px solid var(--color-accent); outline-offset: -2px; }
        .faq-question i { transition: transform var(--transition); color: var(--color-accent); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 1.5rem 1.2rem; font-size: 0.95rem; color: var(--color-text-light); line-height: 1.7; display: none; }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            padding: var(--space-xl) 0; text-align: center;
        }
        .cta-section h2 { color: var(--color-white); margin-bottom: 1rem; }
        .cta-section p { color: rgba(255, 255, 255, 0.8); max-width: 580px; margin: 0 auto 2rem; font-size: 1.05rem; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-dark); color: rgba(255, 255, 255, 0.7);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
        .footer-brand .site-logo { font-size: 1.3rem; margin-bottom: 0.75rem; display: inline-block; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255, 255, 255, 0.6); max-width: 320px; }
        .footer-col h4 { color: var(--color-white); font-size: 1rem; margin-bottom: 1rem; }
        .footer-col a { display: block; padding: 0.3rem 0; font-size: 0.9rem; color: rgba(255, 255, 255, 0.6); text-decoration: none; transition: color var(--transition); }
        .footer-col a:hover { color: var(--color-accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem; margin-top: 2rem;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 0.75rem;
        }
        .footer-bottom p { font-size: 0.85rem; color: rgba(255, 255, 255, 0.45); margin-bottom: 0; }
        .footer-socials { display: flex; gap: 0.75rem; }
        .footer-socials a {
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255, 255, 255, 0.06); display: flex; align-items: center; justify-content: center;
            color: rgba(255, 255, 255, 0.6); transition: all var(--transition);
        }
        .footer-socials a:hover { background: var(--color-accent); color: var(--color-white); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stat-grid { grid-template-columns: repeat(2, 1fr); }
            .step-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-list {
                position: fixed; top: 68px; left: 0; right: 0; background: rgba(14, 19, 38, 0.98);
                backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
                flex-direction: column; padding: 1rem 1.5rem; gap: 0.25rem;
                transform: translateY(-120%); opacity: 0; transition: all var(--transition);
                pointer-events: none; border-bottom: 1px solid rgba(255,255,255,0.06);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { padding: 0.75rem 1rem; font-size: 1.05rem; width: 100%; }
            .hero { min-height: 80vh; padding: 6rem 0 3rem; }
            .hero-content .lead { font-size: 1rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .section { padding: var(--space-md) 0; }
            .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
            .step-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .news-item { flex-direction: column; gap: 0.5rem; }
        }
        @media (max-width: 520px) {
            .site-logo { font-size: 1.1rem; }
            .stat-grid { grid-template-columns: 1fr 1fr; }
            .card-image { height: 160px; }
            .feature-card { padding: 1.5rem 1rem; }
            .faq-question { font-size: 0.95rem; padding: 1rem 1.2rem; }
            .faq-answer { padding: 0 1.2rem 1rem; }
        }

        /* ===== 工具类 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
        @media (max-width: 768px) { .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; } }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }

        /* Foundation 覆盖 — 重置默认按钮/导航味道 */
        .button, button { font-family: var(--font-body); }
        .top-bar { background: transparent; }
        .top-bar ul { background: transparent; }
        .menu > li > a { padding: 0.5rem 1rem; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-light: #fad9b4;
            --dark: #1d3557;
            --dark-light: #2b4d7a;
            --bg: #f8f9fa;
            --bg-alt: #f1f3f5;
            --bg-card: #ffffff;
            --text: #212529;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #dee2e6;
            --border-light: #e9ecef;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--dark); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            transition: color var(--transition);
        }
        .site-logo:hover { color: var(--primary-dark); }
        .nav-list { display: flex; align-items: center; gap: 8px; }
        .nav-list a {
            display: inline-block;
            padding: 8px 20px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
        .nav-list a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(230,57,70,0.25);
        }
        .nav-list a.active:hover { color: var(--text-white); background: var(--primary-dark); }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: var(--bg-alt); }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 140px 0 60px;
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero h1 {
            font-size: 2.4rem;
            color: var(--text-white);
            max-width: 860px;
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            color: rgba(255,255,255,0.75);
            font-size: 0.9rem;
        }
        .article-meta span { display: inline-flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--accent); }
        .article-category {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(255,255,255,0.15);
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--text-white);
            backdrop-filter: blur(4px);
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
            background: var(--bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body h2 {
            font-size: 1.8rem;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--primary);
            display: inline-block;
        }
        .article-body h3 {
            font-size: 1.4rem;
            margin: 32px 0 12px;
            color: var(--dark-light);
        }
        .article-body p {
            margin-bottom: 18px;
            color: var(--text);
            line-height: 1.85;
        }
        .article-body ul, .article-body ol {
            margin: 16px 0 20px 24px;
            list-style: disc;
        }
        .article-body li { margin-bottom: 8px; line-height: 1.7; }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(230,57,70,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-body a { color: var(--primary); font-weight: 500; text-decoration: underline; }
        .article-body a:hover { color: var(--primary-dark); }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--accent-light);
            color: var(--dark);
        }
        .sidebar-card p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 12px; }
        .sidebar-card .btn {
            display: inline-block;
            padding: 10px 28px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            text-decoration: none;
        }
        .sidebar-card .btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(230,57,70,0.2); }
        .sidebar-links a {
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            color: var(--text);
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .sidebar-links a:last-child { border-bottom: none; }
        .sidebar-links a:hover { color: var(--primary); padding-left: 8px; }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .not-found i { font-size: 4rem; color: var(--text-light); margin-bottom: 24px; display: block; }
        .not-found h2 { font-size: 2rem; margin-bottom: 12px; }
        .not-found p { color: var(--text-light); margin-bottom: 24px; font-size: 1.1rem; }
        .not-found .btn {
            display: inline-block;
            padding: 14px 40px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .not-found .btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.25); }

        /* ===== Related / CTA ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-alt);
        }
        .related-section h2 {
            font-size: 1.8rem;
            margin-bottom: 36px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; }
        .related-card-body { padding: 20px; }
        .related-card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .related-card-body h3 a { color: var(--dark); text-decoration: none; }
        .related-card-body h3 a:hover { color: var(--primary); }
        .related-card-body p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; }

        .article-cta {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            text-align: center;
            color: var(--text-white);
        }
        .article-cta h2 { font-size: 2rem; color: var(--text-white); margin-bottom: 16px; }
        .article-cta p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .article-cta .btn {
            display: inline-block;
            padding: 16px 48px;
            background: var(--text-white);
            color: var(--primary);
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all var(--transition);
            text-decoration: none;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
        }
        .article-cta .btn:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.2); background: #fff; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { font-size: 1.5rem; color: var(--text-white); display: inline-block; margin-bottom: 12px; }
        .footer-brand .site-logo:hover { color: var(--primary-light); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; opacity: 0.8; max-width: 360px; }
        .footer-col h4 { color: var(--text-white); font-size: 1.05rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer-socials a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .nav-list { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 16px 24px; gap: 4px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); }
            .nav-list.open { display: flex; }
            .nav-list a { width: 100%; padding: 12px 16px; }
            .nav-toggle { display: block; }
            .article-hero { padding: 100px 0 40px; min-height: 240px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 20px; }
            .article-body h2 { font-size: 1.4rem; }
            .article-body h3 { font-size: 1.15rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-cta h2 { font-size: 1.5rem; }
            .article-cta .btn { padding: 14px 36px; font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-body { padding: 16px 12px; }
            .sidebar-card { padding: 20px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .gap-1 { gap: 8px; }
        .gap-2 { gap: 16px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a2a6c;
            --color-primary-light: #2d4a8e;
            --color-primary-dark: #0f1a4a;
            --color-accent: #f5a623;
            --color-accent-light: #ffc74d;
            --color-accent-dark: #d4891a;
            --color-bg: #f8f9fc;
            --color-bg-alt: #eef0f6;
            --color-bg-dark: #0d1117;
            --color-text: #1c1e2a;
            --color-text-light: #5a5f73;
            --color-text-lighter: #8b90a5;
            --color-text-on-dark: #f0f2f8;
            --color-border: #dde0e8;
            --color-card-bg: #ffffff;
            --color-card-shadow: rgba(26, 42, 108, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --shadow-accent: 0 8px 28px rgba(245, 166, 35, 0.30);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1280px;
            --header-height: 76px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-family);
            font-weight: 400;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--color-primary);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            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: 1.25;
            color: var(--color-primary-dark);
        }
        p {
            margin-bottom: 0;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }
        @media screen and (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
        }

        /* ===== 版块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #ffffff;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            text-align: center;
            margin-bottom: 12px;
            color: var(--color-primary-dark);
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--color-text-light);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
            line-height: 1.7;
        }
        .section-dark .section-sub {
            color: rgba(240, 242, 248, 0.8);
        }
        @media screen and (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-sub {
                font-size: 1rem;
                margin-bottom: 36px;
            }
        }
        @media screen and (max-width: 520px) {
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-sub {
                font-size: 0.92rem;
                margin-bottom: 28px;
            }
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            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: -0.01em;
            color: var(--color-primary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .site-logo:hover {
            color: var(--color-primary-light);
            transform: scale(1.02);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            display: inline-block;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--color-primary);
            background: rgba(26, 42, 108, 0.05);
        }
        .nav-list a.active {
            color: var(--color-primary);
            background: rgba(26, 42, 108, 0.08);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 4px;
        }
        /* 移动端汉堡 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px 4px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(26, 42, 108, 0.05);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        @media screen and (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-list {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 18px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero-banner {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .hero-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(245, 166, 35, 0.10) 0%, transparent 70%);
            z-index: 1;
        }
        .hero-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 100px 24px 80px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.18);
            color: var(--color-accent-light);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 6px 20px;
            border-radius: 50px;
            border: 1px solid rgba(245, 166, 35, 0.25);
            margin-bottom: 24px;
            text-transform: uppercase;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #ffffff;
            line-height: 1.15;
            margin-bottom: 18px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-title span {
            color: var(--color-accent);
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(240, 242, 248, 0.85);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            font-size: 1rem;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245, 166, 35, 0.35);
            color: var(--color-primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.35);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-3px);
            color: #ffffff;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.08rem;
            border-radius: var(--radius-lg);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.88rem;
            border-radius: var(--radius-sm);
        }
        @media screen and (max-width: 768px) {
            .hero-banner {
                min-height: 400px;
            }
            .hero-banner .container {
                padding: 70px 18px 60px;
            }
            .hero-title {
                font-size: 2.1rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .btn-lg {
                padding: 13px 30px;
                font-size: 0.95rem;
            }
        }
        @media screen and (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.92rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-lg {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 卡片系统 ===== */
        .card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 24px 22px 28px;
        }
        .card-tag {
            display: inline-block;
            background: rgba(26, 42, 108, 0.06);
            color: var(--color-primary-light);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary-dark);
            line-height: 1.35;
        }
        .card-text {
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .card-cta {
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--color-primary-light);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .card-cta i {
            transition: var(--transition);
        }
        .card-cta:hover i {
            transform: translateX(4px);
        }
        .card-accent {
            border-top: 4px solid var(--color-accent);
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media screen and (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media screen and (max-width: 520px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ===== 特色图标列表 ===== */
        .feature-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 20px 18px;
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .feature-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
        }
        .feature-icon.accent {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
        }
        .feature-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .feature-content p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        /* ===== 流程步骤 ===== */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 32px 22px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            counter-increment: step;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-card::before {
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-weight: 800;
            font-size: 0.9rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(245, 166, 35, 0.30);
        }
        .step-icon {
            font-size: 2.2rem;
            color: var(--color-primary-light);
            margin-bottom: 16px;
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }
        @media screen and (max-width: 1024px) {
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 520px) {
            .step-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(26, 42, 108, 0.02);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--color-primary-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 22px;
        }
        @media screen and (max-width: 520px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                font-size: 0.88rem;
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 18px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .cta-desc {
            font-size: 1.05rem;
            color: rgba(240, 242, 248, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media screen and (max-width: 768px) {
            .cta-title {
                font-size: 1.7rem;
            }
            .cta-desc {
                font-size: 0.95rem;
            }
        }
        @media screen and (max-width: 520px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-title {
                font-size: 1.4rem;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 28px 16px;
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-number.accent {
            color: var(--color-accent-dark);
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-top: 6px;
            font-weight: 500;
        }
        @media screen and (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
        }
        @media screen and (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 18px 12px;
            }
        }

        /* ===== 图文区块 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .split-block.reverse {
            direction: rtl;
        }
        .split-block.reverse>* {
            direction: ltr;
        }
        .split-image {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .split-content h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--color-primary-dark);
        }
        .split-content p {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 18px;
        }
        .split-content .btn {
            margin-top: 8px;
        }
        @media screen and (max-width: 768px) {
            .split-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .split-block.reverse {
                direction: ltr;
            }
            .split-content h3 {
                font-size: 1.4rem;
            }
            .split-image {
                aspect-ratio: 16/10;
            }
        }

        /* ===== 标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag {
            display: inline-block;
            background: rgba(26, 42, 108, 0.06);
            color: var(--color-primary-light);
            font-size: 0.78rem;
            font-weight: 500;
            padding: 5px 16px;
            border-radius: 50px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .tag:hover {
            background: rgba(26, 42, 108, 0.10);
            border-color: rgba(26, 42, 108, 0.15);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(240, 242, 248, 0.75);
            padding: 60px 0 32px;
        }
        .site-footer .container {
            max-width: var(--container-max);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            color: #ffffff;
            font-size: 1.4rem;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(240, 242, 248, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(240, 242, 248, 0.6);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(240, 242, 248, 0.45);
        }
        .footer-socials {
            display: flex;
            gap: 14px;
        }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            color: rgba(240, 242, 248, 0.5);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            transform: scale(1.08);
        }
        @media screen and (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media screen and (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 额外辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-12 {
            gap: 12px;
        }

        /* ===== Backpic 装饰 ===== */
        .bg-decor {
            position: relative;
        }
        .bg-decor::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.04;
            pointer-events: none;
            z-index: 0;
        }
        .bg-decor>.container {
            position: relative;
            z-index: 1;
        }

        /* ===== 移动端微调 ===== */
        @media screen and (max-width: 520px) {
            .hero-badge {
                font-size: 0.7rem;
                padding: 4px 14px;
            }
            .card-body {
                padding: 16px 14px 20px;
            }
            .feature-item {
                padding: 14px 12px;
            }
            .feature-icon {
                width: 42px;
                height: 42px;
                font-size: 1.1rem;
            }
        }