/* roulang page: index */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --bg: #f8fafc;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  --text: #1e293b;
  --text-light: #64748b;
  --text-white: #f1f5f9;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 18px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
  --shadow-hover: 0 8px 32px rgba(37,99,235,0.12);
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-w: 1200px;
  --header-h: 72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font-family:inherit;font-size:1rem}
ul,ol{list-style:none}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}

/* header & nav */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--border);height:var(--header-h);display:flex;align-items:center}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{font-size:1.35rem;font-weight:800;color:var(--text);letter-spacing:-0.3px;display:flex;align-items:center;gap:8px}
.logo i{color:var(--primary);font-size:1.5rem}
.logo span{color:var(--primary)}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:8px 18px;border-radius:var(--radius-sm);font-size:0.92rem;font-weight:500;color:var(--text-light);transition:all var(--transition);position:relative}
.nav a:hover{color:var(--primary);background:var(--primary-light)}
.nav a.active{color:var(--primary);background:var(--primary-light);font-weight:600}
.nav a.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--primary);border-radius:2px}
.nav-cta{background:var(--primary)!important;color:#fff!important;padding:8px 22px!important;border-radius:var(--radius-sm)!important;font-weight:600!important;box-shadow:0 4px 12px rgba(37,99,235,0.25)}
.nav-cta:hover{background:var(--primary-dark)!important;transform:translateY(-1px);box-shadow:0 6px 20px rgba(37,99,235,0.35)!important}
.menu-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--text);cursor:pointer;padding:4px 8px;border-radius:6px}
.menu-toggle:hover{background:var(--border)}
@media(max-width:768px){
  .menu-toggle{display:block}
  .nav{position:fixed;top:var(--header-h);left:0;right:0;background:var(--bg-white);flex-direction:column;padding:16px 20px 24px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);transform:translateY(-110%);opacity:0;pointer-events:none;transition:all var(--transition);gap:2px;z-index:99}
  .nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav a{padding:12px 16px;width:100%;text-align:center;font-size:1rem}
  .nav a.active::after{display:none}
  .nav-cta{margin-top:6px}
}

/* hero */
.hero{background:linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);position:relative;overflow:hidden;min-height:580px;display:flex;align-items:center}
.hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.20;mix-blend-mode:overlay}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding-top:40px;padding-bottom:40px}
.hero-text h1{font-size:3rem;font-weight:800;color:#fff;line-height:1.2;margin-bottom:20px;letter-spacing:-0.5px}
.hero-text h1 span{color:var(--accent)}
.hero-text p{font-size:1.15rem;color:rgba(255,255,255,0.78);line-height:1.8;margin-bottom:28px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-actions .btn{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;transition:all var(--transition);border:none;cursor:pointer}
.hero-actions .btn-primary{background:var(--accent);color:#0f172a;box-shadow:0 4px 20px rgba(245,158,11,0.35)}
.hero-actions .btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(245,158,11,0.45)}
.hero-actions .btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.35)}
.hero-actions .btn-outline:hover{background:rgba(255,255,255,0.10);border-color:rgba(255,255,255,0.6);transform:translateY(-2px)}
.hero-visual{display:flex;justify-content:center;align-items:center;position:relative}
.hero-visual img{width:100%;max-width:480px;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);transform:perspective(800px) rotateY(-4deg);transition:transform var(--transition)}
.hero-visual img:hover{transform:perspective(800px) rotateY(0deg)}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(37,99,235,0.20);backdrop-filter:blur(8px);padding:6px 14px;border-radius:50px;font-size:0.82rem;color:rgba(255,255,255,0.85);margin-bottom:16px;border:1px solid rgba(255,255,255,0.10)}
@media(max-width:1024px){
  .hero-text h1{font-size:2.4rem}
  .hero .container{gap:32px}
}
@media(max-width:768px){
  .hero{min-height:auto}
  .hero .container{grid-template-columns:1fr;gap:28px;padding-top:32px;padding-bottom:32px;text-align:center}
  .hero-text p{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-visual{order:-1}
  .hero-visual img{max-width:320px;transform:none}
  .hero-text h1{font-size:2rem}
  .hero-badge{justify-content:center}
}

/* sections */
.section{padding:72px 0}
.section-alt{background:var(--bg-white)}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2rem;font-weight:800;color:var(--text);margin-bottom:10px;letter-spacing:-0.3px}
.section-title p{color:var(--text-light);font-size:1.05rem;max-width:600px;margin:0 auto}
.section-title .tag{display:inline-block;padding:4px 16px;border-radius:50px;background:var(--primary-light);color:var(--primary);font-size:0.82rem;font-weight:600;margin-bottom:12px}

/* features grid */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--bg-card);border-radius:var(--radius);padding:32px 28px;box-shadow:var(--shadow);border:1px solid var(--border);transition:all var(--transition);text-align:center}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.feature-card .icon{width:60px;height:60px;border-radius:14px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin:0 auto 18px;transition:background var(--transition)}
.feature-card:hover .icon{background:var(--primary);color:#fff}
.feature-card h3{font-size:1.2rem;font-weight:700;margin-bottom:8px}
.feature-card p{color:var(--text-light);font-size:0.92rem;line-height:1.7}
@media(max-width:768px){.features-grid{grid-template-columns:1fr;gap:18px}}

/* category cards */
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cate-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--bg-card);box-shadow:var(--shadow);border:1px solid var(--border);transition:all var(--transition);cursor:pointer}
.cate-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.cate-card img{width:100%;height:180px;object-fit:cover;transition:transform 0.6s}
.cate-card:hover img{transform:scale(1.06)}
.cate-card .body{padding:18px 18px 20px}
.cate-card .body h3{font-size:1.05rem;font-weight:700;margin-bottom:4px}
.cate-card .body p{font-size:0.85rem;color:var(--text-light)}
.cate-card .badge{position:absolute;top:12px;left:12px;background:rgba(37,99,235,0.88);backdrop-filter:blur(6px);color:#fff;padding:4px 12px;border-radius:50px;font-size:0.75rem;font-weight:600}
@media(max-width:1024px){.category-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.category-grid{grid-template-columns:1fr}}

/* content list */
.content-list{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.content-card{display:flex;gap:18px;background:var(--bg-card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);border:1px solid var(--border);transition:all var(--transition)}
.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.content-card .thumb{width:140px;min-height:100px;border-radius:var(--radius-sm);overflow:hidden;flex-shrink:0}
.content-card .thumb img{width:100%;height:100%;object-fit:cover}
.content-card .info{flex:1;display:flex;flex-direction:column;gap:4px}
.content-card .info .meta{display:flex;gap:12px;font-size:0.78rem;color:var(--text-light);align-items:center}
.content-card .info .meta .cate{background:var(--primary-light);color:var(--primary);padding:2px 10px;border-radius:50px;font-weight:600}
.content-card .info h3{font-size:1rem;font-weight:700;line-height:1.4;color:var(--text);transition:color var(--transition)}
.content-card:hover .info h3{color:var(--primary)}
.content-card .info p{font-size:0.88rem;color:var(--text-light);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.content-card .info .time{font-size:0.78rem;color:var(--text-light);display:flex;align-items:center;gap:4px}
@media(max-width:768px){.content-list{grid-template-columns:1fr}.content-card .thumb{width:100px}}

/* stats */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item{padding:28px 16px;background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}
.stat-item .num{font-size:2.6rem;font-weight:800;color:var(--primary);line-height:1.2}
.stat-item .label{font-size:0.92rem;color:var(--text-light);margin-top:4px}
@media(max-width:768px){.stats-row{grid-template-columns:repeat(2,1fr);gap:14px}}

/* steps / flow */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;position:relative}
.step-card{background:var(--bg-card);border-radius:var(--radius);padding:32px 24px;box-shadow:var(--shadow);border:1px solid var(--border);text-align:center;position:relative;transition:all var(--transition)}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step-card .step-num{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 16px}
.step-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.step-card p{font-size:0.9rem;color:var(--text-light)}
@media(max-width:768px){.steps-grid{grid-template-columns:1fr;gap:16px}}

/* faq */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-card);border-radius:var(--radius-sm);border:1px solid var(--border);overflow:hidden;transition:box-shadow var(--transition)}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-weight:600;font-size:1rem;color:var(--text);background:none;border:none;width:100%;text-align:left;transition:background var(--transition)}
.faq-q:hover{background:var(--primary-light)}
.faq-q i{transition:transform var(--transition);color:var(--primary);font-size:0.9rem}
.faq-item.active .faq-q i{transform:rotate(180deg)}
.faq-a{padding:0 22px 18px;font-size:0.93rem;color:var(--text-light);line-height:1.8;display:none}
.faq-item.active .faq-a{display:block}

/* cta */
.cta-section{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);padding:72px 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.10;mix-blend-mode:overlay}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:2.2rem;font-weight:800;color:#fff;margin-bottom:14px}
.cta-section p{font-size:1.1rem;color:rgba(255,255,255,0.82);max-width:560px;margin:0 auto 28px}
.cta-section .btn{display:inline-flex;align-items:center;gap:10px;padding:16px 40px;border-radius:var(--radius-sm);font-size:1.05rem;font-weight:700;background:#fff;color:var(--primary);border:none;cursor:pointer;transition:all var(--transition);box-shadow:0 4px 20px rgba(0,0,0,0.15)}
.cta-section .btn:hover{transform:translateY(-3px);box-shadow:0 8px 32px rgba(0,0,0,0.25);background:var(--accent);color:#0f172a}

/* footer */
.footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:48px 0 24px}
.footer .container{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer-brand .logo{color:#fff;margin-bottom:12px}
.footer-brand .logo i{color:var(--accent)}
.footer-brand p{font-size:0.88rem;line-height:1.8;max-width:300px}
.footer h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:16px}
.footer ul li{margin-bottom:8px}
.footer ul a{color:rgba(255,255,255,0.6);font-size:0.88rem;transition:color var(--transition)}
.footer ul a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:20px;margin-top:32px;text-align:center;font-size:0.82rem;color:rgba(255,255,255,0.4)}
.footer-bottom .domain{color:rgba(255,255,255,0.5)}
@media(max-width:768px){.footer .container{grid-template-columns:1fr 1fr;gap:24px}.footer-brand{grid-column:1/-1}}
@media(max-width:520px){.footer .container{grid-template-columns:1fr}}

/* utilities */
.text-center{text-align:center}
.mt-12{margin-top:12px}
.mt-24{margin-top:24px}
.mt-32{margin-top:32px}
.gap-8{gap:8px}
.empty-state{text-align:center;padding:40px 20px;color:var(--text-light);font-size:1rem;background:var(--bg-card);border-radius:var(--radius);border:1px dashed var(--border)}

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2d5a8e;
            --primary-dark: #0f2440;
            --secondary: #f97316;
            --secondary-light: #fb923c;
            --secondary-dark: #ea580c;
            --accent: #3b82f6;
            --bg: #ffffff;
            --bg-alt: #f1f5f9;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-weak: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --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(0,0,0,0.10);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI','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-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.25rem; }
        h2 { font-size: 1.75rem; }
        h3 { font-size: 1.25rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--text-weak); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow { max-width: 840px; margin: 0 auto; padding: 0 24px; }

        /* ===== Header & Nav (吸顶) ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i { color: var(--secondary); font-size: 1.6rem; }
        .logo:hover { color: var(--primary); }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-weak);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav a i { font-size: 0.85rem; }
        .nav a:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .nav a.active {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .nav a.nav-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 8px 22px;
            box-shadow: 0 2px 8px rgba(249,115,22,0.35);
        }
        .nav a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(249,115,22,0.45);
            color: #fff;
        }
        .nav-toggle { display: none; background: none; font-size: 1.5rem; color: var(--text); cursor: pointer; }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            min-height: 280px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-hero .container-narrow {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-hero .breadcrumb a:hover { color: var(--secondary); }
        .article-hero .breadcrumb i { font-size: 0.75rem; color: rgba(255,255,255,0.5); }
        .article-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.20);
        }
        .article-hero .meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.75);
            flex-wrap: wrap;
        }
        .article-hero .meta span { display: flex; align-items: center; gap: 6px; }
        .article-hero .meta i { font-size: 0.85rem; }
        .article-hero .meta .tag {
            display: inline-block;
            background: rgba(255,255,255,0.18);
            backdrop-filter: blur(4px);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
        }

        /* ===== Article Content ===== */
        .article-body {
            padding: 60px 0 50px;
            background: var(--bg);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body .content p { margin-bottom: 1.25rem; color: var(--text); }
        .article-body .content h2, .article-body .content h3 { margin-top: 2rem; margin-bottom: 0.75rem; }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.5rem 0; box-shadow: var(--shadow-sm); }
        .article-body .content blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--bg-alt);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-weak);
            font-style: italic;
        }
        .article-body .content ul, .article-body .content ol {
            margin: 1rem 0 1.5rem 1.5rem;
            color: var(--text-weak);
        }
        .article-body .content li { margin-bottom: 0.5rem; list-style: disc; }
        .article-body .content a { color: var(--accent); text-decoration: underline; }
        .article-body .content a:hover { color: var(--secondary); }

        .article-notfound {
            text-align: center;
            padding: 80px 0;
        }
        .article-notfound i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .article-notfound h2 { font-size: 1.75rem; margin-bottom: 12px; }
        .article-notfound p { color: var(--text-weak); margin-bottom: 24px; }
        .article-notfound .btn { display: inline-block; }

        /* ===== Article Footer ===== */
        .article-footer-bar {
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
            margin: 30px 0 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-bar .tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .article-footer-bar .tags span { font-weight: 600; color: var(--text); font-size: 0.9rem; }
        .article-footer-bar .tags .tag {
            display: inline-block;
            background: var(--bg-alt);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--text-weak);
            transition: all var(--transition);
        }
        .article-footer-bar .tags .tag:hover { background: var(--primary); color: #fff; }
        .article-footer-bar .share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-footer-bar .share span { font-weight: 600; color: var(--text); font-size: 0.9rem; }
        .article-footer-bar .share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-weak);
            transition: all var(--transition);
        }
        .article-footer-bar .share a:hover { background: var(--primary); color: #fff; }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-alt);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title h2 { font-size: 1.75rem; }
        .related-section .section-title p { color: var(--text-weak); margin-top: 8px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-alt);
        }
        .related-card .card-body { padding: 20px; }
        .related-card .card-body .cat {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--secondary);
            background: rgba(249,115,22,0.10);
            padding: 2px 12px;
            border-radius: 12px;
            margin-bottom: 8px;
        }
        .related-card .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .related-card .card-body h3 a { color: var(--text); }
        .related-card .card-body h3 a:hover { color: var(--primary-light); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-weak); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .date { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg);
        }
        .faq-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .faq-section .section-title h2 { font-size: 1.75rem; }
        .faq-section .section-title p { color: var(--text-weak); margin-top: 8px; }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg);
            transition: background var(--transition);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item[open] summary { background: var(--bg-alt); }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-weak);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2rem; color: #fff; margin-bottom: 12px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.8); margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-section .btn-group { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
        .cta-section .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(249,115,22,0.40);
        }
        .cta-section .btn-primary:hover { background: var(--secondary-dark); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(249,115,22,0.55); color: #fff; }
        .cta-section .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.40);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .cta-section .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; color: #fff; }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.75);
            padding: 50px 0 0;
        }
        .footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer .logo { color: #fff; font-size: 1.25rem; margin-bottom: 12px; }
        .footer .logo i { color: var(--secondary); }
        .footer .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.7; }
        .footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 700; }
        .footer ul li { margin-bottom: 8px; }
        .footer ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: color var(--transition); display: flex; align-items: center; gap: 6px; }
        .footer ul li a:hover { color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.10);
            margin-top: 40px;
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom p { margin: 0; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            cursor: pointer;
            background: var(--primary);
            color: #fff;
            border: none;
        }
        .btn:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-md); color: #fff; }
        .btn-secondary { background: var(--secondary); }
        .btn-secondary:hover { background: var(--secondary-dark); }
        .btn-outline { background: transparent; border: 2px solid var(--border); color: var(--text); }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); background: transparent; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer .container { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-hero h1 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .nav a { padding: 6px 14px; font-size: 0.85rem; }
            .nav a.nav-cta { padding: 6px 16px; }
            .article-hero { padding: 60px 0 40px; min-height: 200px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .meta { gap: 12px; font-size: 0.85rem; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .footer .container { grid-template-columns: 1fr 1fr; gap: 28px; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section .btn-primary, .cta-section .btn-outline { padding: 12px 28px; font-size: 0.95rem; }
        }
        @media (max-width: 640px) {
            .nav { gap: 4px; }
            .nav a { padding: 6px 10px; font-size: 0.8rem; gap: 4px; }
            .nav a i { display: none; }
            .nav a.nav-cta i { display: inline-block; }
            .article-hero h1 { font-size: 1.35rem; }
            .article-hero .meta { flex-direction: column; gap: 8px; }
            .related-grid { grid-template-columns: 1fr; }
            .footer .container { grid-template-columns: 1fr; gap: 24px; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
            .container { padding: 0 16px; }
            .container-narrow { padding: 0 16px; }
        }
        @media (max-width: 480px) {
            .logo { font-size: 1.1rem; }
            .logo i { font-size: 1.3rem; }
            .nav a { font-size: 0.75rem; padding: 4px 8px; }
            .nav a.nav-cta { padding: 4px 14px; font-size: 0.8rem; }
            .article-hero h1 { font-size: 1.2rem; }
        }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible, summary:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .nav a:focus-visible { outline-offset: 0; border-radius: var(--radius-sm); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #60a5fa;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #8b5cf6;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 48px rgba(15, 23, 42, 0.12);
            --shadow-hover: 0 20px 60px rgba(37, 99, 235, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --nav-height: 56px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 顶部栏 ===== */
        .top-bar {
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            padding: 6px 0;
            display: none;
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar a {
            color: #fff;
            opacity: 0.85;
        }
        .top-bar a:hover {
            opacity: 1;
        }
        .top-bar .hot-tags {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .top-bar .hot-tags span {
            opacity: 0.7;
        }
        .top-bar .hot-tags a {
            background: rgba(255, 255, 255, 0.15);
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
        }
        @media (min-width: 1024px) {
            .top-bar {
                display: block;
            }
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
            height: var(--header-height);
        }
        .header.scrolled {
            box-shadow: 0 4px 30px rgba(15, 23, 42, 0.06);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .header .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .header .logo:hover {
            color: var(--primary-dark);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .nav a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }
        .nav a.active i {
            opacity: 1;
        }
        .nav a.active:hover {
            background: var(--primary-dark);
        }
        .nav a.nav-cta {
            background: linear-gradient(135deg, var(--secondary), #f97316);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }
        .nav a.nav-cta i {
            opacity: 1;
        }
        .nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
        }
        .nav-toggle:hover {
            background: var(--border);
        }
        @media (max-width: 768px) {
            .nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: block;
            }
            .header .logo {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 520px) {
            .header .logo span {
                display: none;
            }
            .header .logo i {
                font-size: 1.4rem;
            }
            .nav a {
                font-size: 0.85rem;
                padding: 10px 14px;
            }
        }

        /* ===== Hero / 分类首屏 ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
        }
        .category-hero .hero-badge i {
            color: var(--secondary);
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            margin-bottom: 16px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .category-hero h1 i {
            color: var(--secondary);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .category-hero .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .category-hero .hero-actions .btn {
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
        }
        .category-hero .hero-actions .btn-primary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.35);
        }
        .category-hero .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
            background: var(--secondary-dark);
        }
        .category-hero .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
        }
        .category-hero .hero-actions .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 60px 0 40px;
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
            .category-hero .hero-actions .btn {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-top {
            padding-top: 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-header h2 i {
            color: var(--primary);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .section-header .tag-line {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-bg);
            color: var(--primary);
            padding: 4px 18px;
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 500;
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header p {
                font-size: 0.92rem;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-grid.col-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.col-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        @media (max-width: 1024px) {
            .card-grid.col-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .card-grid,
            .card-grid.col-2,
            .card-grid.col-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 卡片组件 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img {
            transform: scale(1.03);
        }
        .card .card-body {
            padding: 24px 20px 20px;
        }
        .card .card-body .card-tag {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card .card-body h3 a {
            color: var(--text);
        }
        .card .card-body h3 a:hover {
            color: var(--primary);
        }
        .card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .card .card-body .card-meta i {
            margin-right: 4px;
        }
        .card .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            margin-top: 4px;
        }
        .card .card-body .card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }
        .card .card-body .card-link:hover i {
            transform: translateX(4px);
        }
        .card.featured {
            border-color: var(--secondary);
            box-shadow: 0 4px 24px rgba(245, 158, 11, 0.12);
        }
        .card.featured .card-body .card-tag {
            background: #fef3c7;
            color: var(--secondary-dark);
        }
        @media (max-width: 520px) {
            .card .card-img {
                height: 160px;
            }
            .card .card-body {
                padding: 18px 16px 16px;
            }
            .card .card-body h3 {
                font-size: 1rem;
            }
        }

        /* ===== 入口途径卡片（特色卡片） ===== */
        .entry-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 28px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
            position: relative;
            overflow: hidden;
        }
        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .entry-card:hover::before {
            opacity: 1;
        }
        .entry-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .entry-card .entry-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.2);
            transition: all var(--transition);
        }
        .entry-card:hover .entry-icon {
            transform: scale(1.08) rotate(-4deg);
        }
        .entry-card .entry-icon.orange {
            background: linear-gradient(135deg, var(--secondary), #f97316);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.25);
        }
        .entry-card .entry-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.25);
        }
        .entry-card .entry-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #7c3aed);
            box-shadow: 0 8px 24px rgba(139, 92, 246, 0.25);
        }
        .entry-card .entry-icon.red {
            background: linear-gradient(135deg, #ef4444, #dc2626);
            box-shadow: 0 8px 24px rgba(239, 68, 68, 0.25);
        }
        .entry-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .entry-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .entry-card .entry-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--primary-bg);
            color: var(--primary);
            transition: all var(--transition);
        }
        .entry-card .entry-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.25);
        }
        @media (max-width: 768px) {
            .entry-card {
                padding: 24px 20px;
            }
            .entry-card .entry-icon {
                width: 60px;
                height: 60px;
                font-size: 1.6rem;
            }
        }

        /* ===== 步骤流程 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: all var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }
        .step-item .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover .step-num {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
            transform: scale(1.05);
        }
        .step-item .step-num::after {
            content: '';
            position: absolute;
            top: 50%;
            left: calc(100% + 12px);
            width: calc(100% + 24px);
            height: 2px;
            background: var(--border);
            display: none;
        }
        .step-item:not(:last-child) .step-num::after {
            display: block;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-item .step-num::after {
                display: none !important;
            }
        }
        @media (max-width: 520px) {
            .steps {
                grid-template-columns: 1fr;
            }
            .step-item {
                padding: 24px 16px;
            }
        }

        /* ===== 特色列表 ===== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .feature-item {
            display: flex;
            gap: 16px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .feature-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }
        .feature-item .fi-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            background: var(--primary);
        }
        .feature-item .fi-icon.gold {
            background: var(--secondary);
        }
        .feature-item .fi-icon.green {
            background: #10b981;
        }
        .feature-item .fi-icon.purple {
            background: var(--accent);
        }
        .feature-item .fi-icon.red {
            background: #ef4444;
        }
        .feature-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .feature-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .feature-list {
                grid-template-columns: 1fr;
            }
            .feature-item {
                padding: 16px 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
            transition: background var(--transition);
        }
        .faq-item .faq-q:hover {
            background: var(--bg-alt);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 0.9rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        @media (max-width: 520px) {
            .faq-item .faq-q {
                padding: 16px 18px;
                font-size: 0.92rem;
            }
            .faq-item .faq-a {
                padding: 0 18px 16px;
                font-size: 0.85rem;
            }
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            color: #fff;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-block .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-block .btn-group .btn {
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
        }
        .cta-block .btn-group .btn-primary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.3);
        }
        .cta-block .btn-group .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.4);
            background: var(--secondary-dark);
        }
        .cta-block .btn-group .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .cta-block .btn-group .btn-outline-light:hover {
            border-color: rgba(255, 255, 255, 0.6);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.92rem;
            }
            .cta-block .btn-group .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer .footer-brand .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: all var(--transition);
        }
        .footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer .footer-bottom {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 1024px) {
            .footer .container {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 实用工具 ===== */
        .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-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            background: var(--bg-card);
            color: var(--primary);
            border: 2px solid var(--border);
            transition: all var(--transition);
        }
        .btn-more:hover {
            border-color: var(--primary);
            background: var(--primary-bg);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.1);
        }
        .btn-more i {
            font-size: 0.8rem;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-light);
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb i {
            font-size: 0.6rem;
            color: var(--text-light);
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-num .suffix {
            font-size: 1.2rem;
            font-weight: 600;
        }
        .stat-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
        }

        /* ===== 图文区块 ===== */
        .content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .content-block.reverse {
            direction: rtl;
        }
        .content-block.reverse>* {
            direction: ltr;
        }
        .content-block .cb-image img {
            width: 100%;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
        }
        .content-block .cb-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .content-block .cb-text h3 i {
            color: var(--primary);
        }
        .content-block .cb-text p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .content-block .cb-text .cb-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .content-block .cb-text .cb-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.92rem;
            color: var(--text-secondary);
        }
        .content-block .cb-text .cb-list li i {
            color: var(--primary);
            margin-top: 4px;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .content-block,
            .content-block.reverse {
                grid-template-columns: 1fr;
                gap: 28px;
                direction: ltr;
            }
            .content-block .cb-text h3 {
                font-size: 1.3rem;
            }
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 0 auto 16px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        @media (max-width: 520px) {
            :root {
                --header-height: 60px;
            }
            body {
                padding-top: 60px;
            }
            .section {
                padding: 40px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-alt);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }