/* roulang page: index */
:root {
  --primary: #0b1f3a;
  --primary-light: #14345f;
  --accent: #e8a93d;
  --accent-hover: #d9982c;
  --bg: #f2f5f9;
  --white: #ffffff;
  --text: #1a2332;
  --text-light: #5c6b7a;
  --border: #dfe4ec;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 10px 34px rgba(11,31,58,.08);
  --shadow-lg: 0 24px 54px rgba(11,31,58,.14);
  --container: 1200px;
  --space: 84px;
  --transition: all .3s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:50px;padding:14px 30px;font-size:15px;border:2px solid transparent;cursor:pointer;transition:var(--transition);line-height:1.2}
.btn-primary{background:var(--accent);color:#0b1f3a;box-shadow:0 6px 20px rgba(232,169,61,.35)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 10px 28px rgba(232,169,61,.45)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-lg{padding:16px 38px;font-size:16px}
.btn-dark{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-dark:hover{background:var(--primary-light);transform:translateY(-2px)}
.badge{display:inline-block;background:rgba(232,169,61,.14);color:#b8842a;font-size:12px;font-weight:700;padding:6px 14px;border-radius:30px;letter-spacing:.5px}
.section{padding:var(--space) 0;position:relative}
.section-head{max-width:720px;margin:0 auto 52px;text-align:center}
.section-head .badge{margin-bottom:14px}
.section-title{font-size:32px;font-weight:800;line-height:1.3;color:var(--primary);letter-spacing:-.5px;margin-bottom:14px}
.section-subtitle{font-size:16px;color:var(--text-light)}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(11,31,58,.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.12);transition:var(--transition)}
.site-header.scrolled{background:rgba(11,31,58,.94);box-shadow:0 4px 24px rgba(0,0,0,.18)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{font-size:19px;font-weight:800;color:#fff;letter-spacing:.3px;display:flex;align-items:center;gap:10px}
.brand::before{content:'';width:10px;height:10px;background:var(--accent);border-radius:50%;display:inline-block;box-shadow:0 0 0 4px rgba(232,169,61,.25)}
.main-nav{display:flex;align-items:center;gap:8px}
.nav-link{padding:8px 18px;border-radius:30px;font-size:15px;font-weight:500;color:rgba(255,255,255,.75)}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.1)}
.nav-link.active{color:#0b1f3a;background:var(--accent);font-weight:700}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;border-radius:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:var(--transition);border-radius:2px}

/* Hero */
.hero{position:relative;min-height:94vh;display:flex;align-items:center;justify-content:center;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;padding:140px 0 90px}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,31,58,.82) 0%,rgba(11,31,58,.58) 50%,rgba(20,52,95,.72) 100%);z-index:1}
.hero::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 20% 80%,rgba(232,169,61,.18),transparent 50%);z-index:1}
.hero-content{position:relative;z-index:2;text-align:center;max-width:900px;margin:0 auto}
.hero-badge{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#e8eef5;font-size:14px;font-weight:600;padding:10px 26px;border-radius:40px;margin-bottom:26px;letter-spacing:.5px;backdrop-filter:blur(8px)}
.hero-title{font-size:52px;font-weight:800;color:#fff;line-height:1.18;margin-bottom:22px;letter-spacing:-1px;text-shadow:0 4px 24px rgba(0,0,0,.3)}
.hero-title span{color:var(--accent)}
.hero-subtitle{font-size:18px;color:rgba(255,255,255,.85);max-width:640px;margin:0 auto 38px;line-height:1.8}
.hero-actions{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:42px}
.hero-meta{display:flex;gap:28px;justify-content:center;flex-wrap:wrap;color:rgba(255,255,255,.8);font-size:14px}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta .dot{width:6px;height:6px;background:#4ade80;border-radius:50%}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--white);border-radius:var(--radius);padding:40px 32px;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent),#ffcd6b);opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(232,169,61,.4)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:14px;background:rgba(232,169,61,.12);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:22px}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:12px;color:var(--primary)}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.7}

/* Category entry */
.category-wrap{background:var(--primary);border-radius:24px;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;box-shadow:var(--shadow-lg);position:relative}
.category-wrap::before{content:'';position:absolute;top:-40px;right:-40px;width:200px;height:200px;background:radial-gradient(circle,rgba(232,169,61,.2),transparent 60%);border-radius:50%}
.category-image{min-height:320px;background-size:cover;background-position:center;position:relative}
.category-image img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.category-content{padding:56px 48px;color:#fff;display:flex;flex-direction:column;justify-content:center;position:relative;z-index:2}
.category-content .badge{background:rgba(232,169,61,.2);color:#ffcd6b}
.category-content h2{font-size:28px;font-weight:800;margin:16px 0 14px;line-height:1.3}
.category-content p{color:rgba(255,255,255,.75);margin-bottom:24px;font-size:15px;line-height:1.8}
.category-content .btn{margin-top:6px}

/* News */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{background:var(--white);border-radius:var(--radius);padding:28px;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(232,169,61,.35)}
.news-card .badge{align-self:flex-start;margin-bottom:14px}
.news-card h3{font-size:17px;font-weight:700;color:var(--primary);margin-bottom:10px;line-height:1.5}
.news-card p{font-size:14px;color:var(--text-light);flex:1;margin-bottom:14px;line-height:1.7}
.news-meta{font-size:12px;color:#9aa8b5;display:flex;align-items:center;gap:6px;border-top:1px solid var(--border);padding-top:14px;margin-top:auto}
.news-meta::before{content:'📅';font-size:12px}
.empty-tip{text-align:center;padding:48px 20px;color:var(--text-light);font-size:15px;background:var(--white);border-radius:var(--radius);border:1px dashed var(--border)}

/* Stats */
.stats-section{background:var(--primary);color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px}
.stat-item{text-align:center;padding:10px}
.stat-number{font-size:44px;font-weight:800;color:var(--accent);margin-bottom:6px;line-height:1}
.stat-label{font-size:14px;color:rgba(255,255,255,.7)}
.stats-section .section-title{color:#fff}
.stats-section .section-subtitle{color:rgba(255,255,255,.65)}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;position:relative}
.steps-grid::before{content:'';position:absolute;top:36px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,var(--accent),rgba(232,169,61,.2));z-index:0}
.step-item{background:var(--white);border-radius:var(--radius);padding:34px 28px;text-align:center;border:1px solid var(--border);box-shadow:var(--shadow);position:relative;z-index:1;transition:var(--transition)}
.step-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.step-num{width:56px;height:56px;border-radius:50%;background:var(--primary);color:var(--accent);font-size:20px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 22px;border:3px solid var(--accent)}
.step-item h3{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--primary)}
.step-item p{font-size:13px;color:var(--text-light);line-height:1.7}

/* Showcase */
.showcase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.showcase-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition)}
.showcase-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.showcase-img{height:210px;overflow:hidden;position:relative}
.showcase-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.showcase-card:hover .showcase-img img{transform:scale(1.05)}
.showcase-img::after{content:'';position:absolute;inset:0;background:linear-gradient(transparent 60%,rgba(11,31,58,.35))}
.showcase-body{padding:28px}
.showcase-body h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:10px}
.showcase-body p{font-size:14px;color:var(--text-light);line-height:1.7}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:rgba(232,169,61,.4)}
.faq-item details summary{list-style:none;cursor:pointer;padding:22px 28px;font-weight:600;font-size:16px;color:var(--primary);display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-item details summary::-webkit-details-marker{display:none}
.faq-item details summary::after{content:'+';font-size:22px;color:var(--accent);font-weight:500;transition:var(--transition);flex-shrink:0}
.faq-item details[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 28px 24px;color:var(--text-light);font-size:15px;line-height:1.8}

/* CTA */
.cta-section{background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;position:relative}
.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,31,58,.9),rgba(20,52,95,.8));}
.cta-content{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto;color:#fff}
.cta-content h2{font-size:34px;font-weight:800;margin-bottom:16px}
.cta-content p{color:rgba(255,255,255,.8);margin-bottom:32px;font-size:16px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Footer */
.site-footer{background:#081426;color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .brand{font-size:20px;margin-bottom:18px;color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;max-width:360px}
.footer-links h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px}
.footer-links a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.65)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-info{padding:24px 0;border-top:1px solid rgba(255,255,255,.08);text-align:center;font-size:13px;color:rgba(255,255,255,.45)}

/* Responsive */
@media (max-width:1024px){
  .container{padding:0 20px}
  .hero-title{font-size:42px}
  .features-grid,.showcase-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .category-wrap{grid-template-columns:1fr}
}
@media (max-width:768px){
  :root{--space:60px}
  .nav-toggle{display:block;order:3}
  .main-nav{position:fixed;top:78px;left:20px;right:20px;background:rgba(11,31,58,.96);backdrop-filter:blur(20px);border-radius:16px;padding:20px;flex-direction:column;align-items:stretch;gap:6px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:var(--transition);border:1px solid rgba(255,255,255,.1)}
  .main-nav.open{opacity:1;visibility:visible;transform:translateY(0)}
  .main-nav .nav-link{padding:14px 18px;text-align:center;border-radius:10px}
  .nav-cta{display:none}
  .hero{min-height:88vh}
  .hero-title{font-size:34px}
  .hero-subtitle{font-size:16px}
  .hero-meta{flex-direction:column;gap:10px;align-items:center}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .category-content{padding:40px 30px}
  .section-title{font-size:26px}
  .news-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .hero-title{font-size:28px}
  .hero-subtitle{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-lg{text-align:center}
  .features-grid,.showcase-grid,.steps-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:24px}
  .stat-number{font-size:32px}
  .container{padding:0 16px}
  .section-title{font-size:24px}
  .category-content h2{font-size:24px}
  .cta-content h2{font-size:26px}
}

/* roulang page: category1 */
:root {
            --primary: #1e2a4a;
            --primary-dark: #151e36;
            --accent: #f0a500;
            --accent-dark: #d18f00;
            --bg: #f5f7fb;
            --surface: #ffffff;
            --text: #1e2a4a;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --radius-xs: 8px;
            --shadow-sm: 0 2px 10px rgba(30, 42, 74, .06);
            --shadow-md: 0 10px 28px rgba(30, 42, 74, .08);
            --shadow-lg: 0 18px 44px rgba(30, 42, 74, .12);
            --space-section: 96px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        body.no-scroll {
            overflow: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s;
        }

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

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

        .section {
            padding: var(--space-section) 0;
        }

        .section-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            max-width: 760px;
            margin: 0 auto 56px;
            text-align: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(240, 165, 0, .12);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .4px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 3.6vw, 40px);
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: .5px;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            border: 2px solid transparent;
            transition: all .3s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #16203a;
            box-shadow: 0 6px 20px rgba(240, 165, 0, .3);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(240, 165, 0, .35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .6);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-outline-dark {
            border-color: rgba(30, 42, 74, .35);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline-dark:hover {
            border-color: var(--primary);
            background: rgba(30, 42, 74, .06);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
            border-width: 1.5px;
        }

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

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 14px 0;
            background: rgba(21, 30, 54, .42);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, .12);
            transition: background .35s ease, box-shadow .35s ease, padding .35s ease;
        }

        .site-header.solid {
            background: rgba(255, 255, 255, .94);
            border-bottom-color: rgba(21, 30, 54, .08);
            box-shadow: 0 8px 30px rgba(21, 30, 54, .07);
            padding: 10px 0;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .brand {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: .5px;
            color: #fff;
            white-space: nowrap;
            transition: color .3s;
        }

        .site-header.solid .brand {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, .85);
            transition: all .25s ease;
            position: relative;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, .14);
            color: #fff;
        }

        .nav-link.active {
            background: rgba(255, 255, 255, .2);
            color: #fff;
            font-weight: 700;
        }

        .site-header.solid .nav-link {
            color: var(--text);
        }
        .site-header.solid .nav-link:hover {
            background: rgba(30, 42, 74, .07);
            color: var(--primary);
        }
        .site-header.solid .nav-link.active {
            background: rgba(30, 42, 74, .09);
            color: var(--primary);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 10px;
            background: rgba(255, 255, 255, .12);
            transition: background .3s;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all .3s;
        }
        .site-header.solid .nav-toggle {
            background: rgba(30, 42, 74, .08);
        }
        .site-header.solid .nav-toggle span {
            background: var(--primary);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Hero ========== */
        .cate-hero {
            position: relative;
            padding: 190px 0 110px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .cate-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(21, 30, 54, .93) 0%, rgba(21, 30, 54, .78) 55%, rgba(21, 30, 54, .42) 100%);
        }

        .cate-hero::after {
            content: '';
            position: absolute;
            right: -120px;
            bottom: -120px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(240, 165, 0, .14);
            filter: blur(70px);
        }

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

        .crumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .crumb a {
            color: rgba(255, 255, 255, .75);
        }
        .crumb a:hover {
            color: var(--accent);
        }
        .crumb i {
            font-size: 10px;
            opacity: .7;
        }
        .crumb .current {
            color: #fff;
            font-weight: 600;
        }

        .cate-hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: .5px;
            max-width: 720px;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, .2);
        }

        .cate-hero h1 .highlight {
            color: var(--accent);
        }

        .cate-hero .hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, .85);
            max-width: 680px;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 48px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, .14);
        }
        .hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .8);
        }
        .hero-meta .meta-item i {
            color: var(--accent);
            font-size: 16px;
        }

        /* ========== Intro ========== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 64px;
            align-items: center;
        }

        .intro-copy .section-title {
            margin-bottom: 20px;
        }

        .intro-copy p {
            color: var(--text-light);
            font-size: 15.5px;
            margin-bottom: 16px;
            line-height: 1.9;
        }

        .intro-copy p strong {
            color: var(--primary);
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-top: 28px;
        }

        .feat-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 18px 18px 16px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: all .3s ease;
        }
        .feat-card:hover {
            border-color: rgba(240, 165, 0, .4);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .feat-card i {
            font-size: 18px;
            color: var(--accent);
            background: rgba(240, 165, 0, .12);
            border-radius: 10px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .feat-card span {
            font-size: 14.5px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
        }
        .feat-card small {
            display: block;
            font-size: 12.5px;
            color: var(--text-light);
            font-weight: 400;
            margin-top: 3px;
        }

        .intro-media {
            position: relative;
        }
        .intro-media img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
        }
        .intro-media::before {
            content: '';
            position: absolute;
            inset: 24px -24px -24px 24px;
            background: linear-gradient(135deg, rgba(240, 165, 0, .25), rgba(30, 42, 74, .1));
            border-radius: var(--radius);
            z-index: -1;
        }
        .intro-media .media-badge {
            position: absolute;
            right: 18px;
            bottom: 18px;
            background: rgba(21, 30, 54, .85);
            backdrop-filter: blur(8px);
            color: #fff;
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .media-badge i {
            color: var(--accent);
        }

        /* ========== Steps ========== */
        .steps {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            position: relative;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 26px;
            transition: all .3s ease;
            overflow: hidden;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 165, 0, .35);
            transform: translateY(-6px);
        }
        .step-card .step-num {
            font-size: 44px;
            font-weight: 900;
            color: rgba(240, 165, 0, .85);
            line-height: 1;
            margin-bottom: 18px;
            letter-spacing: -1px;
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .step-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 56px;
            background: linear-gradient(180deg, var(--accent), transparent);
            border-radius: 0 4px 4px 0;
            opacity: .6;
            transition: height .3s;
        }
        .step-card:hover::after {
            height: 100%;
            opacity: 1;
        }

        /* ========== Scenes ========== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scene-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform .3s ease, box-shadow .3s ease;
            display: flex;
            flex-direction: column;
        }
        .scene-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
        }

        .scene-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--primary-dark);
        }

        .scene-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scene-body .scene-icon {
            width: 44px;
            height: 44px;
            background: rgba(240, 165, 0, .12);
            color: var(--accent-dark);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .scene-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .scene-body p {
            font-size: 14.5px;
            color: var(--text-light);
            margin-bottom: 16px;
            flex: 1;
        }
        .scene-body .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text-light);
            transition: all .25s;
        }
        .tag:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
            background: rgba(240, 165, 0, .08);
        }

        /* ========== Doc list ========== */
        .doc-grid {
            display: grid;
            grid-template-columns: .95fr 1.05fr;
            gap: 64px;
            align-items: center;
        }

        .doc-media {
            position: relative;
        }
        .doc-media img {
            width: 100%;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            object-fit: cover;
        }
        .doc-media .doc-float {
            position: absolute;
            left: 18px;
            bottom: -18px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 14px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-md);
        }
        .doc-float i {
            font-size: 22px;
            color: var(--accent);
        }
        .doc-float strong {
            font-size: 15px;
            display: block;
        }
        .doc-float span {
            font-size: 12.5px;
            color: rgba(255, 255, 255, .75);
        }

        .doc-items {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .doc-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 22px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all .3s ease;
        }
        .doc-item:hover {
            border-color: rgba(240, 165, 0, .4);
            box-shadow: var(--shadow-sm);
            transform: translateX(6px);
        }
        .doc-item .doc-num {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(30, 42, 74, .08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
            transition: background .3s, color .3s;
        }
        .doc-item:hover .doc-num {
            background: var(--accent);
            color: #16203a;
        }
        .doc-item .doc-text {
            flex: 1;
        }
        .doc-item .doc-text h3 {
            font-size: 15.5px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .doc-item .doc-text p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .doc-item .doc-link {
            color: var(--accent-dark);
            font-size: 14px;
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(240, 165, 0, .1);
            transition: background .3s, transform .3s;
        }
        .doc-item:hover .doc-link {
            background: var(--accent);
            color: #16203a;
            transform: translateX(2px);
        }

        /* ========== Tips ========== */
        .tips {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-attachment: fixed;
            color: #fff;
            overflow: hidden;
        }
        .tips::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(21, 30, 54, .9), rgba(21, 30, 54, .94));
        }
        .tips .container {
            position: relative;
            z-index: 2;
        }
        .tips .section-tag {
            background: rgba(240, 165, 0, .15);
            color: var(--accent);
        }
        .tips .section-title {
            color: #fff;
        }
        .tips .section-desc {
            color: rgba(255, 255, 255, .75);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 8px;
        }

        .tip-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: var(--radius);
            padding: 28px 24px;
            backdrop-filter: blur(6px);
            transition: all .3s ease;
        }
        .tip-card:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-4px);
            border-color: rgba(240, 165, 0, .4);
        }
        .tip-card i {
            font-size: 24px;
            color: var(--accent);
            margin-bottom: 16px;
            display: block;
        }
        .tip-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .tip-card p {
            font-size: 13.5px;
            color: rgba(255, 255, 255, .75);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color .3s, box-shadow .3s;
        }
        .faq-item.open {
            border-color: rgba(240, 165, 0, .35);
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 26px;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: color .3s;
        }
        .faq-q:hover {
            color: var(--accent-dark);
        }
        .faq-q .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(30, 42, 74, .08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            flex-shrink: 0;
            transition: background .3s, color .3s, transform .3s;
        }
        .faq-item.open .faq-icon {
            background: var(--accent);
            color: #16203a;
            transform: rotate(180deg);
        }

        .faq-a {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .4s ease;
        }
        .faq-item.open .faq-a {
            grid-template-rows: 1fr;
        }
        .faq-a-inner {
            overflow: hidden;
        }
        .faq-a-inner .faq-content {
            padding: 0 26px 24px;
            font-size: 14.5px;
            color: var(--text-light);
            line-height: 1.9;
            border-top: 1px solid var(--border);
            padding-top: 18px;
        }
        .faq-a-inner .faq-content strong {
            color: var(--primary);
        }

        /* ========== CTA ========== */
        .cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(240, 165, 0, .12);
            top: -160px;
            right: -100px;
            filter: blur(60px);
        }
        .cta .container {
            position: relative;
            z-index: 2;
        }
        .cta h2 {
            font-size: clamp(26px, 3.4vw, 36px);
            font-weight: 800;
            max-width: 700px;
            margin: 0 auto 16px;
            line-height: 1.3;
        }
        .cta p {
            color: rgba(255, 255, 255, .8);
            max-width: 640px;
            margin: 0 auto 36px;
            font-size: 16px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .7);
            padding: 72px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand .brand {
            display: block;
            font-size: 20px;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            max-width: 360px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            transition: color .25s, padding-left .25s;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-links a i {
            width: 20px;
            font-size: 12px;
            margin-right: 4px;
            color: rgba(240, 165, 0, .6);
        }

        .footer-info {
            text-align: center;
            padding-top: 28px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, .45);
        }
        .footer-info a {
            color: rgba(255, 255, 255, .55);
        }
        .footer-info a:hover {
            color: var(--accent);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 80px;
            }

            .intro-grid,
            .doc-grid {
                gap: 40px;
            }

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

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

            .scenes-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-card:last-child {
                grid-column: span 2;
            }
        }

        @media (max-width: 768px) {
            .nav-wrap {
                gap: 12px;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 68px;
                left: 16px;
                right: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(255, 255, 255, .98);
                border-radius: var(--radius);
                padding: 16px;
                box-shadow: var(--shadow-lg);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px);
                transition: all .3s ease;
                border: 1px solid var(--border);
            }
            .main-nav.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .main-nav .nav-link {
                color: var(--text);
                padding: 14px 16px;
                border-radius: 10px;
                font-size: 15px;
            }
            .main-nav .nav-link:hover {
                background: rgba(30, 42, 74, .06);
                color: var(--primary);
            }
            .main-nav .nav-link.active {
                background: rgba(240, 165, 0, .15);
                color: var(--primary);
            }

            .nav-cta {
                display: none;
            }

            .site-header {
                padding: 12px 0;
            }

            .cate-hero {
                padding: 160px 0 80px;
            }

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

            .hero-actions .btn {
                padding: 11px 22px;
                font-size: 14px;
            }

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

            .intro-media,
            .doc-media {
                order: -1;
            }

            .doc-media .doc-float {
                left: 14px;
                right: 14px;
                bottom: -16px;
                flex-direction: row;
            }

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

        @media (max-width: 520px) {
            :root {
                --space-section: 64px;
            }

            .container {
                padding: 0 18px;
            }

            .brand {
                font-size: 16px;
            }

            .cate-hero {
                padding: 140px 0 64px;
            }
            .cate-hero h1 {
                font-size: 26px;
                line-height: 1.35;
            }
            .cate-hero .hero-desc {
                font-size: 15px;
            }

            .hero-meta {
                gap: 16px;
                flex-wrap: wrap;
            }
            .hero-meta .meta-item {
                font-size: 13px;
            }

            .section-title {
                font-size: 25px;
            }

            .section-head {
                margin-bottom: 40px;
            }

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

            .scenes-grid {
                grid-template-columns: 1fr;
            }
            .scene-card:last-child {
                grid-column: auto;
            }

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

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

            .doc-item {
                padding: 16px;
                gap: 12px;
            }
            .doc-item .doc-text h3 {
                font-size: 14px;
            }
            .doc-item .doc-text p {
                font-size: 12px;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }

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

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

            .faq-q {
                padding: 18px 18px;
                font-size: 14.5px;
            }
            .faq-a-inner .faq-content {
                padding: 0 18px 20px;
                font-size: 14px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: article */
:root {
  --primary: #1e3a5f;
  --primary-deep: #132a45;
  --primary-light: #2d5482;
  --primary-soft: #e8eff7;
  --accent: #f0a93b;
  --accent-deep: #d8912a;
  --accent-soft: #fdf3e3;
  --text-main: #1d2933;
  --text-soft: #607080;
  --text-muted: #94a3b3;
  --bg-page: #f5f8fb;
  --bg-white: #ffffff;
  --bg-dark: #0f1c29;
  --border: #dde5ee;
  --border-light: #eef2f7;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 2px 10px rgba(15,30,45,.05);
  --shadow-md: 0 6px 24px rgba(15,30,45,.09);
  --shadow-lg: 0 14px 40px rgba(15,30,45,.13);
  --transition: .3s ease;
  --space-xs: 8px;
  --space-sm: 14px;
  --space-md: 20px;
  --space-lg: 34px;
  --space-xl: 56px;
  --space-2xl: 84px;
  --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; border: 0; outline: 0; background: transparent; }
button { cursor: pointer; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding-left: 22px; padding-right: 22px; }
.section-pad { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: var(--radius-sm); font-weight: 600;
  font-size: 15px; line-height: 1.3; border: 1px solid transparent;
  transition: var(--transition); cursor: pointer; text-align: center; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn:active { transform: translateY(0) scale(.97); }
.btn:focus-visible { outline: 3px solid rgba(240,169,59,.45); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: #1a2a38; box-shadow: 0 4px 16px rgba(240,169,59,.32); }
.btn-primary:hover { background: #f6b855; color: #1a2a38; box-shadow: 0 8px 24px rgba(240,169,59,.4); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-light { background: #fff; color: var(--primary-deep); box-shadow: var(--shadow-sm); }
.btn-light:hover { background: var(--primary-soft); color: var(--primary-deep); }
.btn-lg { padding: 16px 38px; font-size: 17px; border-radius: var(--radius-md); }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* Badge */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 60px; font-size: 13px; font-weight: 600;
  background: var(--primary-soft); color: var(--primary); line-height: 1.5;
}
.badge-accent { background: var(--accent-soft); color: var(--accent-deep); }
.badge-green { background: #e2f5e9; color: #1d7d44; }
.badge-sm { padding: 3px 10px; font-size: 12px; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15,30,45,.35);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.13);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(15,30,45,.06);
}
.nav-wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 74px; position: relative;
}
.brand {
  font-size: 22px; font-weight: 800; letter-spacing: .5px;
  color: #fff; text-shadow: 0 1px 8px rgba(0,0,0,.3);
  white-space: nowrap; transition: var(--transition);
}
.site-header.scrolled .brand { color: var(--primary-deep); text-shadow: none; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 9px 18px; border-radius: 8px; font-size: 15px; font-weight: 500;
  color: rgba(255,255,255,.92); line-height: 1.4; transition: var(--transition); white-space: nowrap;
}
.site-header.scrolled .nav-link { color: var(--text-main); }
.nav-link:hover { background: rgba(255,255,255,.14); color: #fff; }
.site-header.scrolled .nav-link:hover { background: var(--primary-soft); color: var(--primary); }
.nav-link.active { background: rgba(255,255,255,.18); color: #fff; font-weight: 600; }
.site-header.scrolled .nav-link.active { background: var(--primary-soft); color: var(--primary); }
.nav-cta { margin-left: 6px; }
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; border-radius: 10px; align-items: center;
  border: 1px solid rgba(255,255,255,.3); background: rgba(255,255,255,.08);
}
.site-header.scrolled .nav-toggle { border-color: var(--border); background: #fff; }
.nav-toggle span {
  display: block; width: 18px; height: 2px; border-radius: 3px;
  background: #fff; transition: var(--transition);
}
.site-header.scrolled .nav-toggle span { background: var(--primary-deep); }

/* Page Hero */
.page-hero {
  position: relative; min-height: 380px; display: flex; align-items: center;
  background:
    linear-gradient(108deg, rgba(15,30,45,.94) 15%, rgba(30,58,95,.78) 52%, rgba(15,30,45,.62) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding-top: 140px; padding-bottom: 70px;
  color: #fff; overflow: hidden;
}
.page-hero::after {
  content: ''; position: absolute; right: -80px; bottom: -80px; width: 260px; height: 260px;
  border-radius: 50%; background: rgba(240,169,59,.15); filter: blur(60px);
}
.hero-inner { position: relative; z-index: 2; max-width: 820px; }
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  font-size: 14px; color: rgba(255,255,255,.78); margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255,255,255,.9); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255,255,255,.4); }
.breadcrumb .current { color: rgba(255,255,255,.65); }
.page-hero h1 {
  font-size: clamp(28px, 4.2vw, 46px); font-weight: 800; line-height: 1.25;
  letter-spacing: -.5px; margin-bottom: 14px;
}
.hero-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 12px; }
.hero-meta .badge { background: rgba(240,169,59,.2); color: var(--accent); }
.hero-meta time { font-size: 14px; color: rgba(255,255,255,.7); display: inline-flex; align-items: center; gap: 6px; }

/* Article Main */
.article-section { padding: var(--space-xl) 0 var(--space-2xl); background: var(--bg-page); }
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 40px; align-items: start; }
.article-primary { background: var(--bg-white); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); border: 1px solid var(--border-light); padding: 44px; }
.article-meta-card {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding-bottom: 24px; margin-bottom: 28px; border-bottom: 1px solid var(--border-light);
}
.article-meta-card time { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-soft); }
.article-content { font-size: 16px; line-height: 1.9; color: #2a3642; word-break: break-word; }
.article-content h2 { font-size: 26px; font-weight: 800; color: var(--primary-deep); margin: 38px 0 18px; padding-left: 14px; border-left: 4px solid var(--accent); }
.article-content h3 { font-size: 22px; font-weight: 700; color: var(--primary-deep); margin: 30px 0 14px; }
.article-content h4 { font-size: 18px; font-weight: 700; color: var(--primary); margin: 24px 0 12px; }
.article-content p { margin-bottom: 1.35em; }
.article-content a { color: var(--primary); border-bottom: 1px solid rgba(30,58,95,.3); }
.article-content a:hover { color: var(--accent-deep); border-bottom-color: var(--accent); }
.article-content img { border-radius: 14px; margin: 24px 0; box-shadow: var(--shadow-sm); }
.article-content blockquote {
  margin: 28px 0; padding: 18px 22px; border-left: 4px solid var(--accent);
  background: var(--accent-soft); border-radius: 0 12px 12px 0;
  color: #5a4630; font-size: 16px;
}
.article-content ul, .article-content ol { margin: 0 0 1.2em; padding-left: 1.4em; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 6px; }
.article-content code {
  background: #eef2f7; border-radius: 5px; padding: 2px 8px; font-size: 14px; color: var(--primary);
}
.article-content pre {
  background: var(--bg-dark); color: #e2e8f0; padding: 20px; border-radius: 12px;
  overflow-x: auto; margin: 24px 0; font-size: 14px; line-height: 1.6;
}
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-content th, .article-content td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-content th { background: var(--primary-soft); font-weight: 600; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border-light); }
.article-tags .badge { background: #f1f4f8; color: var(--text-soft); }
.article-not-found {
  text-align: center; padding: 48px 20px;
}
.article-not-found .nfi {
  display: inline-flex; align-items: center; justify-content: center;
  width: 76px; height: 76px; border-radius: 50%; margin-bottom: 20px;
  background: var(--accent-soft); color: var(--accent-deep); font-size: 32px; font-weight: 800;
}
.article-not-found h2 { font-size: 28px; font-weight: 800; color: var(--primary-deep); margin-bottom: 12px; }
.article-not-found p { color: var(--text-soft); margin-bottom: 24px; }
.side-card {
  background: var(--bg-white); border: 1px solid var(--border-light);
  border-radius: var(--radius-md); padding: 24px; box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.side-card h3 { font-size: 17px; font-weight: 700; color: var(--primary-deep); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.side-card h3 i { color: var(--accent); }
.side-list li { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px dashed var(--border-light); font-size: 14px; color: var(--text-soft); }
.side-list li:last-child { border-bottom: 0; }
.side-list li i { color: var(--accent); width: 16px; text-align: center; }
.side-card-accent { background: linear-gradient(135deg, var(--primary-deep), var(--primary)); color: #fff; border: 0; }
.side-card-accent h3 { color: #fff; }
.side-card-accent h3 i { color: var(--accent); }
.side-card-accent p { color: rgba(255,255,255,.82); font-size: 14px; margin-bottom: 16px; }
.side-card-accent .btn { width: 100%; }

/* Related */
.related-section { padding: var(--space-2xl) 0; background: var(--bg-white); border-top: 1px solid var(--border-light); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 36px; }
.section-head .sh-label { display: inline-flex; align-items: center; gap: 6px; color: var(--accent-deep); font-weight: 700; font-size: 13px; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 6px; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: var(--primary-deep); letter-spacing: -.5px; }
.section-head p { color: var(--text-soft); max-width: 560px; font-size: 15px; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.related-card {
  border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden;
  background: var(--bg-white); box-shadow: var(--shadow-sm); transition: var(--transition); display: flex; flex-direction: column;
}
.related-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.related-card .rc-thumb { height: 150px; overflow: hidden; position: relative; }
.related-card .rc-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .rc-thumb img { transform: scale(1.06); }
.rc-body { padding: 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.rc-body h3 { font-size: 15px; font-weight: 700; line-height: 1.45; color: var(--text-main); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.rc-body h3:hover { color: var(--primary); }
.rc-body p { font-size: 13px; color: var(--text-soft); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.rc-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 4px; }
.rc-meta time { font-size: 12px; color: var(--text-muted); }

/* Features */
.feature-section { padding: var(--space-2xl) 0; background: var(--bg-page); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-lg);
  padding: 34px 28px; box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; overflow: hidden;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card .fc-icon {
  width: 56px; height: 56px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px;
}
.fc-icon.i1 { background: var(--primary-soft); color: var(--primary); }
.fc-icon.i2 { background: var(--accent-soft); color: var(--accent-deep); }
.fc-icon.i3 { background: #e2f5e9; color: #1d7d44; }
.feature-card h3 { font-size: 19px; font-weight: 700; color: var(--primary-deep); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-soft); line-height: 1.7; }

/* FAQ */
.faq-section { padding: var(--space-2xl) 0; background: var(--bg-white); border-top: 1px solid var(--border-light); }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border-light); border-radius: var(--radius-md); margin-bottom: 14px; overflow: hidden; background: var(--bg-white); transition: var(--transition); }
.faq-item:hover { border-color: var(--border); }
.faq-item-header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px; cursor: pointer; user-select: none; transition: var(--transition);
}
.faq-item-header h3 { font-size: 16px; font-weight: 600; color: var(--text-main); line-height: 1.4; }
.faq-item-header .fi-icon {
  width: 30px; height: 30px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-soft); color: var(--primary); font-size: 14px; flex-shrink: 0; transition: transform .35s ease;
}
.faq-item.active .faq-item-header { background: var(--primary-soft); }
.faq-item.active .fi-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-item-body { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-item.active .faq-item-body { max-height: 280px; }
.faq-item-body .fac { padding: 0 22px 20px; font-size: 15px; line-height: 1.8; color: var(--text-soft); }
.faq-item-body .fac strong { color: var(--primary-deep); }

/* CTA */
.cta-section { padding: var(--space-2xl) 0; background: var(--bg-page); }
.cta-box {
  position: relative; background: linear-gradient(115deg, var(--primary-deep), var(--primary-light)); 
  border-radius: var(--radius-lg); padding: 56px 48px; overflow: hidden; color: #fff;
  box-shadow: var(--shadow-lg); display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-box::after { content: ''; position: absolute; right: -40px; top: -40px; width: 180px; height: 180px; border-radius: 50%; background: rgba(240,169,59,.16); }
.cta-box .cta-content { position: relative; z-index: 2; }
.cta-box h2 { font-size: clamp(22px, 2.8vw, 32px); font-weight: 800; margin-bottom: 8px; }
.cta-box p { color: rgba(255,255,255,.8); max-width: 520px; font-size: 15px; }
.cta-box .cta-actions { position: relative; z-index: 2; display: flex; gap: 14px; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,.7); padding-top: 60px; padding-bottom: 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 44px; margin-bottom: 44px; }
.footer-brand .brand { font-size: 21px; font-weight: 800; color: #fff; margin-bottom: 10px; display: inline-block; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.6); max-width: 380px; }
.footer-links h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 14px; }
.footer-links a { display: block; font-size: 14px; padding: 5px 0; color: rgba(255,255,255,.62); }
.footer-links a:hover { color: var(--accent); }
.footer-info { border-top: 1px solid rgba(255,255,255,.09); padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: rgba(255,255,255,.45); }

/* Responsive */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-side { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .side-card { margin-bottom: 0; }
}
@media (max-width: 768px) {
  :root { --space-2xl: 52px; --space-xl: 36px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 74px; left: 0; right: 0; background: rgba(255,255,255,.98);
    flex-direction: column; padding: 18px 22px; gap: 8px; transform: translateY(-120%);
    transition: transform .4s ease; box-shadow: var(--shadow-lg); border-top: 1px solid var(--border-light);
    align-items: stretch; display: none;
  }
  .main-nav.show { display: flex; transform: translateY(0); }
  .nav-link { color: var(--text-main); font-size: 16px; padding: 12px 18px; }
  .nav-link:hover, .nav-link.active { background: var(--primary-soft); color: var(--primary); }
  .nav-cta { display: none; }
  .page-hero { min-height: 340px; padding-top: 120px; padding-bottom: 48px; }
  .feature-grid { grid-template-columns: 1fr; }
  .article-primary { padding: 26px 22px; }
  .cta-box { padding: 36px 26px; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-links { border-left: 3px solid rgba(255,255,255,.1); padding-left: 16px; }
}
@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
  .article-side { grid-template-columns: 1fr; }
  .article-meta-card { gap: 10px; }
  .hero-meta { align-items: flex-start; flex-direction: column; gap: 8px; }
  .btn-lg { width: 100%; }
  .cta-actions .btn { width: 100%; }
  .brand { font-size: 18px; }
  .page-hero h1 { font-size: 24px; }
  .footer-grid { gap: 22px; }
}