/* roulang page: index */
:root{
  --primary:#1679B3;--primary-dark:#0E4F74;--bg:#F4F8FB;--card:#FFFFFF;
  --text:#16273A;--text-2:#4F6679;--text-3:#8AA0B2;--accent:#FF7A32;
  --green:#1EAC88;--danger:#E35D4F;--border:#E2EBF2;--tag-bg:#EAF3FA;
  --decor-blue:#D8E9F4;--decor-green:#E3F3F0;--footer-bg:#12263A;--footer-text:#D8E4EE;
  --radius-card:16px;--radius-btn:12px;--radius-tag:999px;
  --shadow:0 6px 24px rgba(15,60,100,.08);--shadow-lg:0 12px 32px rgba(15,60,100,.14);
  --shadow-accent:0 4px 12px rgba(255,122,50,.28);
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans CN","Helvetica Neue",sans-serif;
  --font-num:"DIN Alternate","Barlow Condensed","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{margin:0;padding-bottom:64px;background:var(--bg);color:var(--text);font-family:var(--font-sans);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s,border-color .2s,background .2s}
ul{list-style:none}
button,input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.section-head h2{font-size:28px;font-weight:650;line-height:1.3;color:var(--text);margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-2);line-height:1.7}
h1,h2,h3,h4{line-height:1.3;font-weight:650;color:var(--text)}
h1{font-size:34px}h2{font-size:28px}h3{font-size:20px}h4{font-size:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 28px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .25s ease;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-accent)}
.btn-primary:hover{background:#ff8c4e;color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:scale(.97)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:rgba(22,121,179,.08);color:var(--primary-dark)}
.btn-sm{height:36px;padding:0 20px;font-size:14px}
.tag{display:inline-flex;align-items:center;background:var(--tag-bg);color:var(--primary);font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-tag);line-height:1.4}
.tag-accent{background:rgba(255,122,50,.12);color:var(--accent)}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);transition:gap .2s,color .2s}
.card-link:hover{color:var(--accent);gap:10px}
/* 导航 */
.site-header{height:72px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(8px)}
.nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between}
.brand{display:inline-flex;align-items:center;font-size:21px;font-weight:700;letter-spacing:.4px;color:var(--text)}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--accent);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-right:8px;box-shadow:0 4px 10px rgba(255,122,50,.3)}
.brand-name{display:inline-block}
.nav-list{display:flex;align-items:center;margin:0;padding:0}
.nav-list li{margin:0 16px}
.nav-list a,.nav-list button{font-size:15px;font-weight:500;color:var(--text-2);padding:8px 2px;position:relative;background:none;border:0;cursor:pointer}
.nav-list a::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--primary);border-radius:2px;opacity:0;transition:opacity .2s}
.nav-list a:hover::after{opacity:.5}
.nav-list a:hover{color:var(--primary)}
.nav-list li.active a{color:var(--primary);font-weight:600}
.nav-list li.active a::after{opacity:1}
.nav-cta a{color:var(--primary);font-weight:600;border-bottom:1px solid rgba(22,121,179,.4);padding-bottom:2px}
.nav-cta a::after{display:none}
.nav-cta a:hover{color:var(--accent);border-color:var(--accent)}
.nav-toggle{display:none;width:44px;height:44px;background:none;border:0;font-size:22px;color:var(--text);cursor:pointer;border-radius:10px}
.nav-toggle:hover{background:var(--tag-bg)}
/* Hero */
.hero{position:relative;overflow:hidden;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;padding-top:120px}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(105deg,rgba(244,248,251,.97) 20%,rgba(216,233,244,.82) 70%,rgba(216,233,244,.6) 100%)}
.hero::after{content:'';position:absolute;width:460px;height:460px;border:2px solid rgba(22,121,179,.12);border-radius:50%;top:-180px;right:-140px;pointer-events:none}
.hero-content{position:relative;max-width:680px;padding-bottom:40px}
.hero-badge{margin-bottom:24px}
.hero h1{font-size:44px;font-weight:700;line-height:1.2;color:var(--text);margin-bottom:20px}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.8;margin-bottom:36px;max-width:600px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{position:relative;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(22,121,179,.16);margin-top:64px;padding:32px 0 40px}
.stat-item{padding:0 24px;border-left:1px solid var(--border)}
.stat-item:first-child{padding-left:0;border-left:0}
.stat-num{font-family:var(--font-num);font-size:44px;font-weight:700;color:var(--primary);line-height:1.1}
.stat-num span{font-size:20px;color:var(--text-3);font-weight:600;margin-left:2px}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px;font-weight:500}
/* 卖点三连 */
.features-section{background:var(--bg)}
.feature-card{background:var(--card);border:1px solid rgba(226,235,242,.6);border-radius:var(--radius-card);box-shadow:var(--shadow);padding:32px 24px;height:100%;display:flex;flex-direction:column;transition:all .3s ease}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feature-icon{width:56px;height:56px;border-radius:14px;background:var(--tag-bg);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:20px}
.feature-icon.orange{background:rgba(255,122,50,.12);color:var(--accent)}
.feature-icon.green{background:rgba(30,172,136,.12);color:var(--green)}
.feature-card h3{font-size:20px;font-weight:600;margin-bottom:12px}
.feature-card p{font-size:15px;color:var(--text-2);line-height:1.7;margin-bottom:20px;flex:1}
/* 场景演示 */
.scenes-section{background:var(--card)}
.scene-row{display:flex;align-items:center;gap:64px;padding-bottom:96px}
.scene-row:last-child{padding-bottom:0}
.scene-row.reverse{flex-direction:row-reverse}
.scene-media{flex:1;min-width:0}
.img-wrap{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow)}
.img-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.img-wrap:hover img{transform:scale(1.02)}
.scene-text{flex:1;min-width:0}
.scene-text h3{font-size:26px;font-weight:650;margin-bottom:16px}
.scene-text p{color:var(--text-2);font-size:16px;line-height:1.75;margin-bottom:20px}
/* 社会认同 */
.evidence-section{background:var(--bg)}
.testimonial-card{background:var(--card);border:1px solid rgba(226,235,242,.6);border-radius:var(--radius-card);box-shadow:var(--shadow);padding:36px 32px;height:100%}
.testimonial-card blockquote{margin:0;font-size:17px;line-height:1.85;color:var(--text);border-left:3px solid var(--accent);padding-left:20px}
.testimonial-author{margin-top:20px;font-size:14px;color:var(--text-3)}
.stat-card{background:var(--card);border:1px solid rgba(226,235,242,.6);border-radius:var(--radius-card);box-shadow:var(--shadow);padding:24px 16px;text-align:center;height:100%;transition:all .3s ease}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.stat-card .num{font-family:var(--font-num);font-size:36px;font-weight:700;color:var(--primary);line-height:1.2}
.stat-card .label{font-size:13px;color:var(--text-3);margin-top:8px}
.coop-strip{display:flex;flex-wrap:wrap;gap:12px;border-top:1px solid var(--border);padding-top:28px;margin-top:28px}
.coop-strip span{background:var(--tag-bg);border-radius:var(--radius-tag);padding:10px 20px;font-size:14px;color:var(--text-2);font-weight:500}
/* 最新资讯 */
.latest-section{background:var(--card)}
.head-between{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;text-align:left;margin-bottom:48px}
.head-between .section-head{max-width:none;text-align:left;margin:0}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);padding:10px 16px;border:1px solid var(--border);border-radius:var(--radius-btn);background:var(--card);transition:all .25s}
.link-more:hover{border-color:var(--primary);background:var(--tag-bg)}
.info-card{display:flex;gap:24px;background:var(--card);border:1px solid rgba(226,235,242,.6);border-radius:var(--radius-card);box-shadow:var(--shadow);padding:20px;margin-bottom:16px;transition:all .3s ease}
.info-card:last-child{margin-bottom:0}
.info-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.info-card-thumb{flex:0 0 220px;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--decor-blue)}
.info-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.info-card:hover .info-card-thumb img{transform:scale(1.04)}
.info-card-body{flex:1;min-width:0;display:flex;flex-direction:column}
.info-card-meta{display:flex;align-items:center;gap:16px;margin-bottom:10px;flex-wrap:wrap}
.info-card-body h3{font-size:18px;font-weight:600;margin:0 0 10px;line-height:1.4}
.info-card-body p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0 0 12px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.date{font-size:13px;color:var(--text-3)}
.read-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;transition:gap .2s,color .2s}
.read-link:hover{color:var(--accent);gap:10px}
.empty-state{background:var(--bg);border:1px dashed var(--border);border-radius:var(--radius-card);padding:56px 24px;text-align:center;color:var(--text-3);font-size:15px}
/* FAQ */
.faq-section{background:var(--bg)}
.accordion{background:transparent;max-width:800px;margin:0 auto;border:0}
.accordion-item{background:transparent;border-bottom:1px solid var(--border);border-radius:0}
.accordion-item:first-child{border-top:1px solid var(--border)}
.accordion-title{background:transparent;border:0;padding:22px 48px 22px 0;font-size:16px;font-weight:600;color:var(--text);position:relative;display:block;line-height:1.5}
.accordion-title:hover,.accordion-title:focus{background:transparent;color:var(--primary)}
.accordion-title::after{content:'\f078';font-family:'Font Awesome 6 Free';font-weight:900;font-size:13px;color:var(--primary);position:absolute;right:0;top:50%;transform:translateY(-50%);transition:transform .2s}
.accordion-item.is-active>.accordion-title::after{transform:translateY(-50%) rotate(180deg)}
.accordion-content{padding:0 48px 24px 0;border:0;background:transparent;font-size:15px;color:var(--text-2);line-height:1.75}
/* CTA */
.cta-section{background:var(--card)}
.cta-card{background:var(--decor-blue);border-radius:24px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
.cta-card::before{content:'';position:absolute;width:260px;height:260px;border:2px solid rgba(22,121,179,.1);border-radius:50%;top:-110px;left:-80px}
.cta-card::after{content:'';position:absolute;width:180px;height:180px;background:rgba(255,122,50,.08);border-radius:50%;bottom:-60px;right:-40px}
.cta-card>*{position:relative}
.cta-card h2{font-size:30px;margin-bottom:16px}
.cta-card p{font-size:16px;color:var(--text-2);max-width:560px;margin:0 auto 32px}
/* 页脚 */
.site-footer{background:var(--footer-bg);color:var(--footer-text);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(216,228,238,.8);max-width:320px}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col ul{padding:0;margin:0}
.footer-col li{margin-bottom:10px;font-size:14px;line-height:1.8;color:rgba(216,228,238,.85)}
.footer-col a{color:var(--footer-text)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(216,228,238,.12);padding:22px 0;font-size:13px;color:rgba(216,228,238,.65)}
.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
/* 底部固定转化条 */
.sticky-cta{position:fixed;bottom:0;left:0;right:0;height:64px;background:rgba(255,255,255,.98);border-top:1px solid var(--border);box-shadow:0 -4px 20px rgba(15,60,100,.08);z-index:50;display:flex;align-items:center;backdrop-filter:blur(6px)}
.sticky-cta-inner{display:flex;align-items:center;justify-content:space-between;width:100%;gap:24px}
.sticky-text{margin:0;font-size:14px;color:var(--text-2);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* 响应式 */
@media (max-width:1024px){
  .section{padding:80px 0}
  .hero{padding-top:100px}
  .scene-row{gap:40px}
  .footer-grid{gap:32px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .hero h1{font-size:36px}
  .hero-sub{font-size:16px}
  .hero-stats{margin-top:48px}
  .stat-num{font-size:34px}
  .scene-row,.scene-row.reverse{flex-direction:column;gap:32px;padding-bottom:64px}
  .scene-row:last-child{padding-bottom:0}
  .info-card{flex-direction:column;gap:16px}
  .info-card-thumb{flex:none;width:100%}
  .head-between{flex-direction:column;align-items:flex-start}
  .cta-card{padding:48px 28px}
  .footer-grid{grid-template-columns:1fr;gap:40px}
}
@media (max-width:552px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:40px}
  .section-head h2{font-size:22px}
  .hero{padding-top:64px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:repeat(3,1fr);gap:8px;padding:24px 0 32px}
  .stat-item{padding:0 12px}
  .stat-item:first-child{padding-left:0}
  .stat-num{font-size:28px}
  .stat-label{font-size:12px}
  .brand-name{font-size:19px}
  .nav-toggle{display:block}
  .nav-list{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:16px 20px;flex-direction:column;align-items:stretch;box-shadow:0 10px 24px rgba(15,60,100,.08)}
  .nav-list.is-open{display:flex}
  .nav-list li{margin:0;border-bottom:1px solid #f0f4f7}
  .nav-list li:last-child{border-bottom:0}
  .nav-list a{padding:14px 2px;display:block}
  .nav-list a::after{display:none}
  .nav-cta a{border-bottom:0;color:var(--primary)}
  .nav-toggle.is-active{color:var(--primary)}
}

/* roulang page: category1 */
:root {
            --primary: #1679B3;
            --primary-dark: #0E4F74;
            --bg: #F4F8FB;
            --white: #FFFFFF;
            --text: #16273A;
            --text-secondary: #4F6679;
            --text-weak: #8AA0B2;
            --accent: #FF7A32;
            --success: #1EAC88;
            --warning: #E35D4F;
            --border: #E2EBF2;
            --tag-bg: #EAF3FA;
            --decor-light: #D8E9F4;
            --decor-mint: #E3F3F0;
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow: 0 6px 24px rgba(15, 60, 100, 0.08);
            --shadow-hover: 0 12px 32px rgba(15, 60, 100, 0.14);
            --transition: all .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--primary-dark);
        }

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

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Top Header ===== */
        .site-header {
            background: rgba(255, 255, 255, .92);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(6px);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            font-size: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            line-height: 1;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: .5px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 36px;
            margin: 0;
        }

        .nav-list>li {
            margin: 0;
        }

        .nav-list a {
            display: inline-block;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            line-height: 1.4;
        }

        .nav-list a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: var(--transition);
        }

        .nav-list a:hover::after,
        .nav-list li.active a::after {
            transform: scaleX(1);
        }

        .nav-list li.active a {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-list .nav-cta a {
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 7px 18px;
            font-size: 14px;
            color: var(--text);
        }

        .nav-list .nav-cta a::after {
            display: none;
        }

        .nav-list .nav-cta a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(22, 121, 179, .04);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
        }

        /* ===== Page Head ===== */
        .page-head {
            padding: 56px 0 48px;
            position: relative;
            background: linear-gradient(135deg, var(--decor-light) 0%, rgba(255, 255, 255, 0) 60%), var(--bg);
        }

        .page-head::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 42px solid rgba(22, 121, 179, .06);
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-weak);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .sep {
            color: #c3d2de;
        }

        .page-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: -0.5px;
        }

        .page-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-top: 12px;
            max-width: 680px;
            line-height: 1.7;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 72px 0;
        }

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

        .section-header {
            margin-bottom: 40px;
            text-align: center;
        }

        .section-eyebrow {
            display: inline-block;
            background: var(--tag-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 14px;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 650;
            line-height: 1.3;
            color: var(--text);
        }

        .section-desc {
            margin-top: 10px;
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Info Cards Grid ===== */
        .info-card {
            background: var(--white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            border: 1px solid rgba(226, 235, 242, .7);
        }

        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .info-card-media {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--decor-light);
            position: relative;
        }

        .info-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .info-card:hover .info-card-media img {
            transform: scale(1.03);
        }

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

        .info-card-tag {
            display: inline-block;
            background: var(--tag-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            padding: 3px 12px;
            margin-bottom: 12px;
            align-self: flex-start;
            letter-spacing: .4px;
        }

        .info-card-title {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text);
        }

        .info-card-text {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            flex: 1;
        }

        .info-card-link {
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .info-card-link i {
            font-size: 12px;
            transition: var(--transition);
        }

        .info-card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Feature Detail ===== */
        .feature-block {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 56px;
        }

        .feature-block:last-child {
            margin-bottom: 0;
        }

        .feature-block.flip {
            flex-direction: row-reverse;
        }

        .feature-media {
            flex: 0 0 44%;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .feature-media img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        .feature-content {
            flex: 1;
        }

        .feature-content h3 {
            font-size: 24px;
            font-weight: 650;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 14px;
        }

        .feature-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .feature-content .info-card-link {
            margin-top: 0;
        }

        /* ===== Stats Band ===== */
        .stats-band {
            background: var(--primary-dark);
            border-radius: var(--radius-card);
            padding: 44px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            box-shadow: 0 12px 32px rgba(14, 79, 116, .18);
        }

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

        .stat-num {
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            font-size: 44px;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
            letter-spacing: .5px;
        }

        .stat-label {
            margin-top: 8px;
            color: rgba(255, 255, 255, .72);
            font-size: 14px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section .container {
            max-width: 800px;
        }

        .faq-list {
            background: var(--white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 8px 32px;
            border: 1px solid var(--border);
        }

        .faq-list .accordion-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-list .accordion-item:last-child {
            border-bottom: none;
        }

        .accordion-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 20px 24px;
            position: relative;
            line-height: 1.5;
            display: block;
            transition: var(--transition);
        }

        .accordion-title:hover {
            color: var(--primary);
        }

        .accordion-title::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%) rotate(0deg);
            font-size: 13px;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .accordion-item.is-active .accordion-title::after {
            transform: translateY(-50%) rotate(180deg);
            color: var(--primary);
        }

        .accordion-content {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
        }

        .accordion-content p {
            margin-bottom: 0;
        }

        /* ===== Related Categories ===== */
        .rel-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .rel-card {
            background: var(--white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 28px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .rel-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .rel-card.active {
            border-color: var(--primary);
            background: linear-gradient(180deg, rgba(22, 121, 179, .06), rgba(255, 255, 255, 0) 60%);
        }

        .rel-card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--tag-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .rel-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .rel-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .rel-card a {
            font-size: 14px;
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 56px 0 72px;
        }

        .cta-band {
            background: linear-gradient(135deg, var(--decor-light), var(--decor-mint));
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .cta-band p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
        }

        .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: 1px solid transparent;
            transition: var(--transition);
            line-height: 1;
            text-align: center;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 122, 50, .28);
        }

        .btn-primary:hover {
            background: #ff8c4d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(255, 122, 50, .32);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(255, 122, 50, .24);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(22, 121, 179, .08);
            color: var(--primary);
        }

        .btn-outline:active {
            background: rgba(22, 121, 179, .14);
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #12263A;
            color: #D8E4EE;
            padding-top: 56px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-name {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(216, 228, 238, .8);
            margin-top: 12px;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li {
            font-size: 14px;
            color: rgba(216, 228, 238, .75);
        }

        .footer-col ul a {
            color: rgba(216, 228, 238, .75);
            font-size: 14px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(216, 228, 238, .12);
            padding: 20px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom span {
            font-size: 13px;
            color: rgba(216, 228, 238, .6);
        }

        /* ===== Foundation Grid Overrides ===== */
        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .grid-margin-x {
            margin-left: -12px;
            margin-right: -12px;
        }

        .grid-margin-x>.cell {
            padding-left: 12px;
            padding-right: 12px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .page-title {
                font-size: 30px;
            }
            .section-title {
                font-size: 26px;
            }
            .stats-band {
                grid-template-columns: repeat(4, 1fr);
                padding: 36px 24px;
            }
            .stat-num {
                font-size: 36px;
            }
            .feature-block {
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .site-header .nav-wrap {
                height: 64px;
            }
            .brand-name {
                font-size: 18px;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 24px 20px;
                gap: 0;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(15, 60, 100, .08);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li {
                width: 100%;
                border-bottom: 1px solid var(--border);
            }
            .nav-list li:last-child {
                border-bottom: none;
            }
            .nav-list a {
                padding: 14px 0;
                font-size: 15px;
                width: 100%;
                display: block;
            }
            .nav-list a::after {
                display: none;
            }
            .nav-list li.active a {
                color: var(--primary);
            }
            .nav-list .nav-cta {
                margin-top: 8px;
                border-bottom: none;
            }
            .nav-list .nav-cta a {
                display: inline-block;
                padding: 8px 20px;
            }
            .nav-toggle {
                display: block;
            }
            .page-head {
                padding: 40px 0 32px;
            }
            .page-title {
                font-size: 26px;
            }
            .page-subtitle {
                font-size: 15px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 28px;
            }
            .section-title {
                font-size: 22px;
            }
            .info-card-body {
                padding: 20px;
            }
            .info-card-title {
                font-size: 18px;
            }
            .feature-block,
            .feature-block.flip {
                flex-direction: column;
                gap: 24px;
            }
            .feature-media {
                flex-basis: auto;
                width: 100%;
            }
            .feature-content h3 {
                font-size: 20px;
            }
            .stats-band {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
                padding: 32px 20px;
                border-radius: 12px;
            }
            .stat-num {
                font-size: 32px;
            }
            .faq-list {
                padding: 4px 16px;
            }
            .accordion-title {
                padding: 16px 4px;
                font-size: 15px;
            }
            .accordion-content {
                padding: 0 4px 18px;
            }
            .rel-cards {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-band {
                padding: 36px 20px;
            }
            .cta-band h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }

        @media (max-width: 552px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .page-head {
                padding: 32px 0 28px;
            }
            .page-title {
                font-size: 24px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 21px;
            }
            .info-card-money {
                grid-template-columns: 1fr;
            }
            .stats-band {
                grid-template-columns: 1fr 1fr;
                padding: 24px 16px;
            }
            .stat-num {
                font-size: 28px;
            }
            .btn-group {
                flex-direction: column;
                width: 100%;
            }
            .btn {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
  --primary: #1679B3;
  --primary-dark: #0E4F74;
  --accent: #FF7A32;
  --accent-light: #ff8f4d;
  --bg: #F4F8FB;
  --card: #FFFFFF;
  --text-main: #16273A;
  --text-sub: #4F6679;
  --text-weak: #8AA0B2;
  --border: #E2EBF2;
  --tag-bg: #EAF3FA;
  --decor-blue: #D8E9F4;
  --decor-cyan: #E3F3F0;
  --success: #1EAC88;
  --warning: #E35D4F;
  --radius-card: 16px;
  --radius-btn: 12px;
  --shadow: 0 6px 24px rgba(15, 60, 100, 0.08);
  --shadow-hover: 0 12px 32px rgba(15, 60, 100, 0.14);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--primary); text-decoration: none; transition: color .2s ease, background .2s ease; }
a:hover { color: var(--primary-dark); }

ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }

h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; margin: 0 0 .5em; }

.grid-container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: all .25s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 12px rgba(255, 122, 50, 0.28);
}
.btn-primary:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 122, 50, 0.36);
}
.btn-primary:active {
  transform: translateY(0) scale(.98);
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(22, 121, 179, 0.08);
  color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0) scale(.98);
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: .5px;
}
.brand:hover { color: var(--text-main); }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  font-size: 18px;
  font-weight: 800;
  transition: background .2s ease;
}
.brand:hover .brand-mark { background: var(--accent-light); }
.nav-toggle {
  display: none;
  font-size: 22px;
  color: var(--text-main);
  padding: 8px;
  border-radius: 8px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
  margin: 0;
}
.nav-list li { position: relative; }
.nav-list li a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  padding: 8px 2px;
  position: relative;
  display: inline-block;
  transition: color .2s ease;
}
.nav-list li a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .25s ease, opacity .25s ease;
  opacity: .5;
}
.nav-list li a:hover::after { transform: scaleX(1); }
.nav-list li.active a { color: var(--primary); }
.nav-list li.active a::after { transform: scaleX(1); opacity: 1; }
.nav-cta a {
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 14px;
  transition: background .2s ease, color .2s ease;
}
.nav-cta a::after { display: none; }
.nav-cta a:hover {
  background: rgba(22, 121, 179, 0.06);
  color: var(--primary-dark);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: #C5D3DE; }
.breadcrumb-current { color: var(--text-sub); max-width: 360px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.breadcrumb-title { color: var(--text-weak); }

/* ===== 文章标题区 ===== */
.article-head {
  position: relative;
  padding: 48px 0 40px;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.article-head::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(244, 248, 251, 0.94), rgba(255, 255, 255, 0.88));
}
.article-head .grid-container { position: relative; z-index: 1; }
.article-head h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-main);
  max-width: 820px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-sub);
}
.article-category-tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--primary);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
}
.article-date { display: inline-flex; align-items: center; gap: 6px; }
.article-source { color: var(--text-weak); }

/* ===== 文章布局 ===== */
.article-layout { padding: 40px 0 64px; }
.article-main {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow);
}
.article-cover {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: 0 4px 16px rgba(15, 60, 100, 0.06);
}
.article-cover img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }

/* ===== 正文排版 ===== */
.article-content {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  word-wrap: break-word;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 650;
  margin: 40px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 12px;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 10px;
}
.article-content p { margin: 0 0 16px; }
.article-content p:last-child { margin-bottom: 0; }
.article-content ul,
.article-content ol {
  margin: 0 0 20px;
  padding-left: 24px;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; }
.article-content li:last-child { margin-bottom: 0; }
.article-content blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--primary);
  background: #F0F6FB;
  border-radius: 0 12px 12px 0;
  color: var(--text-sub);
}
.article-content img { border-radius: 12px; margin: 24px 0; }
.article-content figure { margin: 24px 0; }
.article-content figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 8px;
}
.article-content pre {
  background: #16273A;
  color: #E8F0F7;
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 20px;
}
.article-content code {
  background: var(--tag-bg);
  color: var(--primary-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: .9em;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* ===== 空状态 ===== */
.article-empty {
  text-align: center;
  padding: 64px 32px;
}
.article-empty p {
  font-size: 18px;
  color: var(--text-sub);
  margin-bottom: 20px;
}
.article-empty .btn { display: inline-flex; }

/* ===== 侧栏 ===== */
.article-sidebar { text-align: left; }
.sidebar-card {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.sidebar-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.related-item { margin-bottom: 8px; }
.related-item:last-child { margin-bottom: 0; }
.related-item a {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 8px;
  border-radius: 12px;
  transition: background .2s ease;
}
.related-item a:hover { background: var(--bg); }
.related-item img {
  width: 72px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
}
.related-info {
  display: block;
  min-width: 0;
}
.related-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  background: var(--tag-bg);
  color: var(--primary);
  border-radius: 999px;
  padding: 2px 8px;
  margin-bottom: 4px;
}
.related-text {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.4;
}
.sidebar-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  padding: 8px 4px;
  transition: color .2s ease, transform .2s ease;
}
.sidebar-back:hover { color: var(--primary-dark); transform: translateX(-3px); }

/* ===== 页面内 CTA ===== */
.article-cta { padding: 0 0 96px; }
.cta-box {
  background: linear-gradient(135deg, rgba(234, 243, 250, 0.95), rgba(227, 243, 240, 0.95)),
              url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  border-radius: 24px;
  padding: 48px;
  text-align: center;
  box-shadow: var(--shadow);
}
.cta-box h2 {
  font-size: 26px;
  font-weight: 650;
  margin-bottom: 12px;
  color: var(--text-main);
}
.cta-box p {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 24px;
}
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer {
  background: #12263A;
  color: #D8E4EE;
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand:hover { color: #fff; }
.footer-brand p {
  font-size: 14px;
  color: #9AB3C7;
  margin-top: 16px;
  margin-bottom: 0;
  max-width: 360px;
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 12px;
  font-size: 14px;
  color: #9AB3C7;
  line-height: 1.6;
}
.footer-col ul li:last-child { margin-bottom: 0; }
.footer-col a {
  color: #D8E4EE;
  font-size: 14px;
  transition: color .2s ease;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
}
.footer-bottom .grid-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 13px;
  color: #8FA7BA;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-box { padding: 40px 24px; }
}

@media (max-width: 768px) {
  .brand-name { display: none; }
  .nav-list { gap: 16px; }
  .nav-list li a { font-size: 14px; }
  .nav-cta a { padding: 5px 12px; }
  .article-head { padding: 36px 0 32px; }
  .article-head h1 { font-size: 28px; }
  .article-layout { padding: 24px 0 56px; }
  .article-main { padding: 24px; }
  .article-cta { padding-bottom: 64px; }
  .cta-box h2 { font-size: 22px; }
  .footer-grid { gap: 32px; }
  .footer-bottom .grid-container { flex-direction: column; text-align: center; }
}

@media (max-width: 552px) {
  .site-header { position: relative; }
  .nav-toggle { display: flex; }
  .nav-list {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    z-index: 99;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 20px 16px;
    gap: 0;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 32px rgba(15, 60, 100, 0.1);
    transform: translateY(-120%);
    transition: transform .3s ease;
    margin: 0;
  }
  .nav-list.open { transform: translateY(0); }
  .nav-list li {
    width: 100%;
    border-bottom: 1px solid #F0F5F9;
  }
  .nav-list li:last-child { border-bottom: none; }
  .nav-list li a { display: block; padding: 14px 4px; font-size: 16px; }
  .nav-list li a::after { display: none; }
  .nav-list li.active a { color: var(--primary); background: transparent; }
  .nav-cta a {
    display: inline-block;
    border: none;
    padding: 0;
    color: var(--primary);
  }
  .grid-container { padding-left: 20px; padding-right: 20px; }
  .article-head { padding: 28px 0 24px; }
  .article-head h1 { font-size: 24px; }
  .article-main { padding: 20px; border-radius: 14px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 21px; }
  .article-content h3 { font-size: 18px; }
  .cta-box { padding: 32px 20px; border-radius: 18px; }
  .cta-box h2 { font-size: 20px; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .breadcrumb { font-size: 12px; }
  .breadcrumb-current { max-width: 200px; }
}

/* roulang page: category3 */
:root{
  --primary:#1679B3;
  --primary-dark:#0E4F74;
  --bg:#F4F8FB;
  --card-bg:#FFFFFF;
  --text:#16273A;
  --text-secondary:#4F6679;
  --text-muted:#8AA0B2;
  --accent:#FF7A32;
  --success:#1EAC88;
  --warning:#E35D4F;
  --border:#E2EBF2;
  --tag-bg:#EAF3FA;
  --soft-blue:#D8E9F4;
  --soft-cyan:#E3F3F0;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 6px 24px rgba(15,60,100,.08);
  --shadow-hover:0 12px 32px rgba(15,60,100,.14);
  --spacing-section:96px;
  --spacing-section-mobile:56px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans CN",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{font-weight:700;line-height:1.3;color:var(--text)}
p + p{margin-top:16px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--spacing-section) 0}
.section-head{
  text-align:center;
  max-width:680px;
  margin:0 auto 56px;
}
.section-tag{
  display:inline-block;
  background:var(--tag-bg);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:1px;
  padding:4px 14px;
  border-radius:999px;
  margin-bottom:16px;
  text-transform:uppercase;
}
.section-head h2{font-size:28px;font-weight:650;margin-bottom:12px;letter-spacing:.5px}
.section-head p{color:var(--text-secondary);font-size:15px;line-height:1.7}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 26px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  border:none;
  gap:8px;
  transition:all .25s ease;
  cursor:pointer;
  white-space:nowrap;
  line-height:1;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 4px 12px rgba(255,122,50,.28);
}
.btn-primary:hover{
  background:#FF8D4B;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(255,122,50,.36);
}
.btn-primary:active{
  transform:translateY(0) scale(.98);
  background:#F76C1F;
}
.btn-outline{
  background:transparent;
  color:var(--primary);
  border:1px solid var(--primary);
}
.btn-outline:hover{
  background:rgba(22,121,179,.08);
  color:var(--primary-dark);
  transform:translateY(-2px);
}
.btn-outline:active{
  transform:translateY(0) scale(.98);
}
.btn-white{
  background:#fff;
  color:var(--primary-dark);
  box-shadow:0 6px 18px rgba(14,79,116,.18);
}
.btn-white:hover{
  background:#F4F8FB;
  transform:translateY(-2px);
}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  height:72px;
  display:flex;
  align-items:center;
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:100%;
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 32px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.5px;
}
.brand:hover{color:var(--text)}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  background:var(--accent);
  color:#fff;
  font-size:18px;
  font-weight:800;
  font-family:"DIN Alternate","Barlow Condensed",sans-serif;
  border-radius:10px;
  box-shadow:0 4px 10px rgba(255,122,50,.3);
}
.brand-name{font-size:19px;font-weight:700}
.nav-toggle{
  display:none;
  background:none;
  border:none;
  font-size:22px;
  color:var(--text);
  padding:8px;
  border-radius:8px;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:36px;
  list-style:none;
  margin:0;
}
.nav-list > li > a{
  font-size:15px;
  font-weight:500;
  color:var(--text-secondary);
  padding:8px 2px;
  position:relative;
  transition:color .2s;
}
.nav-list > li > a::after{
  content:'';
  position:absolute;
  left:0;
  bottom:-2px;
  width:100%;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-list > li > a:hover{
  color:var(--primary);
}
.nav-list > li > a:hover::after{
  transform:scaleX(.6);
  opacity:.6;
}
.nav-list > li.active > a{
  color:var(--primary);
  font-weight:600;
}
.nav-list > li.active > a::after{
  transform:scaleX(1);
  opacity:1;
}
.nav-list .nav-cta a{
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:8px 18px;
  color:var(--text);
  background:#fff;
  transition:all .2s;
}
.nav-list .nav-cta a:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:var(--tag-bg);
}
.nav-list .nav-cta a::after{
  display:none;
}

/* ===== Category Hero ===== */
.cat-hero{
  position:relative;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:110px 0 90px;
  overflow:hidden;
}
.cat-hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(244,248,251,.96) 20%,rgba(216,233,244,.78) 60%,rgba(227,243,240,.62) 100%);
}
.cat-hero::after{
  content:'';
  position:absolute;
  width:480px;
  height:480px;
  border-radius:50%;
  border:60px solid rgba(22,121,179,.05);
  right:-120px;
  top:-120px;
  pointer-events:none;
}
.cat-hero-deco{
  position:absolute;
  width:260px;
  height:260px;
  border-radius:50%;
  border:36px solid rgba(255,122,50,.05);
  left:-80px;
  bottom:-100px;
  pointer-events:none;
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:2px;
  margin-bottom:18px;
  background:rgba(255,255,255,.8);
  padding:6px 16px;
  border-radius:999px;
  border:1px solid var(--border);
}
.hero-eyebrow i{color:var(--accent);font-size:12px}
.cat-hero h1{
  font-size:44px;
  font-weight:700;
  line-height:1.2;
  margin-bottom:16px;
  letter-spacing:1px;
  color:var(--text);
}
.hero-desc{
  font-size:18px;
  color:var(--text-secondary);
  max-width:520px;
  margin-bottom:32px;
  line-height:1.7;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.hero-tags{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:36px;
}
.hero-tags span{
  font-size:13px;
  color:var(--text-secondary);
  background:rgba(255,255,255,.85);
  border:1px solid var(--border);
  padding:5px 14px;
  border-radius:999px;
}

/* ===== Category Cards Grid ===== */
.cat-cards-section{
  padding:var(--spacing-section) 0;
  background:var(--bg);
}
.card{
  background:var(--card-bg);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
  height:100%;
  display:flex;
  flex-direction:column;
}
.card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
}
.card-img{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--tag-bg);
}
.card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.card:hover .card-img img{
  transform:scale(1.04);
}
.card-badge{
  position:absolute;
  top:12px;
  left:12px;
  z-index:2;
  background:var(--accent);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  box-shadow:0 2px 8px rgba(255,122,50,.3);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-body{
  padding:24px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.card-cat{
  display:inline-block;
  background:var(--tag-bg);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:14px;
  align-self:flex-start;
}
.card h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:10px;
  line-height:1.4;
  color:var(--text);
}
.card p{
  font-size:15px;
  color:var(--text-secondary);
  line-height:1.7;
  flex:1;
}
.card-link{
  margin-top:18px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap .2s ease;
}
.card-link:hover{
  gap:10px;
  color:var(--primary-dark);
}

/* ===== Focus / Sub-section ===== */
.focus-section{
  padding:var(--spacing-section) 0;
  background:var(--soft-blue);
  position:relative;
  overflow:hidden;
}
.focus-section::before{
  content:'';
  position:absolute;
  width:300px;
  height:300px;
  border-radius:50%;
  border:50px solid rgba(255,255,255,.25);
  right:-80px;
  top:-80px;
  pointer-events:none;
}
.focus-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  margin-top:32px;
}
.focus-item{
  background:#fff;
  border-radius:var(--radius);
  padding:32px 28px;
  box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
  position:relative;
  overflow:hidden;
}
.focus-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
}
.focus-num{
  font-family:"DIN Alternate","Barlow Condensed",sans-serif;
  font-size:34px;
  font-weight:700;
  color:var(--soft-blue);
  line-height:1;
  display:block;
  margin-bottom:16px;
}
.focus-icon{
  width:48px;
  height:48px;
  border-radius:14px;
  background:var(--tag-bg);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  font-size:20px;
  margin-bottom:18px;
  transition:background .25s,color .25s;
}
.focus-item:hover .focus-icon{
  background:var(--primary);
  color:#fff;
}
.focus-item h3{
  font-size:19px;
  font-weight:600;
  margin-bottom:12px;
}
.focus-item p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:16px;
}
.focus-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.focus-tags span{
  font-size:12px;
  color:var(--text-secondary);
  background:var(--bg);
  padding:3px 10px;
  border-radius:999px;
  border:1px solid var(--border);
}

/* ===== Stats Strip ===== */
.stats-section{
  padding:var(--spacing-section) 0;
  background:var(--bg);
}
.stats-block{
  background:var(--card-bg);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:40px 48px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:24px;
  flex-wrap:wrap;
}
.stats-item{
  flex:1;
  min-width:160px;
  text-align:center;
}
.stats-num{
  font-family:"DIN Alternate","Barlow Condensed",sans-serif;
  font-size:38px;
  font-weight:700;
  color:var(--primary);
  line-height:1.1;
  display:flex;
  align-items:baseline;
  justify-content:center;
  gap:4px;
}
.stats-num small{
  font-size:18px;
  font-weight:600;
  color:var(--primary);
}
.stats-label{
  font-size:13px;
  color:var(--text-muted);
  margin-top:8px;
  letter-spacing:.5px;
}
.stats-divider{
  width:1px;
  height:48px;
  background:var(--border);
}

/* ===== Feature Alternating ===== */
.feature-section{
  padding:var(--spacing-section) 0;
  background:var(--soft-cyan);
}
.feature-grid{
  display:flex;
  flex-direction:column;
  gap:48px;
}
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.feature-row.reverse .feature-img{
  order:2;
}
.feature-img{
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  aspect-ratio:16/9;
  background:var(--tag-bg);
}
.feature-img img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.feature-content h3{
  font-size:22px;
  font-weight:600;
  margin-bottom:12px;
}
.feature-content p{
  font-size:15px;
  color:var(--text-secondary);
  line-height:1.8;
  margin-bottom:16px;
}
.feature-content .btn{
  margin-top:8px;
}

/* ===== FAQ ===== */
.faq-section{
  padding:var(--spacing-section) 0;
  background:var(--bg);
}
.faq-wrap{
  max-width:800px;
  margin:0 auto;
}
.faq-item{
  background:var(--card-bg);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  margin-bottom:16px;
  overflow:hidden;
  border:1px solid var(--border);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:22px 28px;
  font-size:16px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:background .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{
  background:var(--tag-bg);
}
.faq-icon{
  width:28px;
  height:28px;
  border-radius:50%;
  background:var(--tag-bg);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  flex-shrink:0;
  transition:transform .25s ease,background .25s,color .25s;
}
.faq-item[open] .faq-icon{
  transform:rotate(180deg);
  background:var(--primary);
  color:#fff;
}
.faq-content{
  padding:0 28px 24px;
  color:var(--text-secondary);
  font-size:15px;
  line-height:1.75;
}
.faq-content p{margin:0}

/* ===== Related Categories ===== */
.related-section{
  padding:var(--spacing-section) 0;
  background:#fff;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.related-item{
  background:var(--bg);
  border-radius:var(--radius);
  padding:28px;
  border:1px solid var(--border);
  transition:all .25s ease;
  display:flex;
  flex-direction:column;
}
.related-item:hover{
  background:var(--tag-bg);
  border-color:rgba(22,121,179,.3);
  transform:translateY(-3px);
  box-shadow:var(--shadow);
}
.related-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  font-size:18px;
  margin-bottom:14px;
  box-shadow:0 2px 8px rgba(15,60,100,.06);
}
.related-item h3{
  font-size:17px;
  font-weight:600;
  margin-bottom:6px;
}
.related-item span{
  font-size:13px;
  color:var(--text-muted);
  line-height:1.6;
  flex:1;
}
.related-item .go-link{
  margin-top:14px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  display:flex;
  align-items:center;
  gap:4px;
}
.related-item .go-link:hover{gap:8px}
.related-item.active-item{
  background:var(--primary);
  border-color:var(--primary);
}
.related-item.active-item h3,
.related-item.active-item span,
.related-item.active-item .go-link,
.related-item.active-item .related-icon{
  color:#fff;
}
.related-item.active-item .related-icon{
  background:rgba(255,255,255,.15);
}
.related-item.active-item .go-link{
  color:#fff;
}

/* ===== CTA ===== */
.cta-section{
  padding:var(--spacing-section) 0;
  background:var(--primary);
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  width:420px;
  height:420px;
  border-radius:50%;
  border:56px solid rgba(255,255,255,.06);
  right:-100px;
  top:-120px;
}
.cta-section::after{
  content:'';
  position:absolute;
  width:240px;
  height:240px;
  border-radius:50%;
  border:32px solid rgba(255,122,50,.15);
  left:-60px;
  bottom:-80px;
}
.cta-inner{
  position:relative;
  z-index:2;
  text-align:center;
  max-width:640px;
  margin:0 auto;
}
.cta-inner h2{
  color:#fff;
  font-size:30px;
  font-weight:700;
  margin-bottom:16px;
}
.cta-inner p{
  color:rgba(255,255,255,.82);
  font-size:16px;
  line-height:1.75;
  margin-bottom:32px;
}
.cta-btns{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}

/* ===== Footer ===== */
.site-footer{
  background:#12263A;
  color:#D8E4EE;
  padding:60px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.2fr;
  gap:60px;
  padding-bottom:48px;
}
.footer-brand .brand{
  margin-bottom:16px;
}
.footer-brand .brand .brand-name{
  color:#fff;
  font-size:20px;
}
.footer-brand p{
  font-size:14px;
  color:rgba(216,228,238,.75);
  line-height:1.7;
  max-width:280px;
}
.footer-col h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:20px;
}
.footer-col ul{
  list-style:none;
  margin:0;
}
.footer-col ul li{
  margin-bottom:12px;
  font-size:14px;
  color:rgba(216,228,238,.75);
}
.footer-col ul li a{
  color:rgba(216,228,238,.75);
  font-size:14px;
  transition:color .2s;
}
.footer-col ul li a:hover{
  color:var(--accent);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;
}
.footer-bottom .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.footer-bottom span{
  font-size:13px;
  color:rgba(216,228,238,.6);
}

/* ===== Animations ===== */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-up{animation:fadeUp .6s ease both}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .focus-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:24px}
  .feature-row.reverse .feature-img{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .section{padding:var(--spacing-section-mobile) 0}
  .cat-hero{padding:72px 0 60px}
  .cat-hero h1{font-size:32px}
  .hero-desc{font-size:16px}
  .nav-wrap{padding:0 20px}
  .nav-list{
    position:fixed;
    top:72px;
    left:0;
    width:100%;
    background:#fff;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:16px 24px;
    border-bottom:1px solid var(--border);
    box-shadow:0 12px 30px rgba(15,60,100,.1);
    transform:translateY(-120%);
    transition:transform .3s ease;
    z-index:99;
  }
  .nav-list.open{transform:translateY(0)}
  .nav-list > li{width:100%}
  .nav-list > li > a{
    display:block;
    padding:14px 6px;
    font-size:16px;
    border-bottom:1px solid var(--bg);
  }
  .nav-list > li > a::after{display:none}
  .nav-list .nav-cta a{
    border:none;
    padding:14px 6px;
    font-size:16px;
    background:none;
    color:var(--primary);
  }
  .nav-toggle{
    display:block;
  }
  .stats-block{flex-direction:column;padding:32px}
  .stats-divider{width:48px;height:1px}
  .focus-grid{grid-template-columns:1fr;gap:20px}
  .related-grid{grid-template-columns:1fr;gap:20px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom .container{flex-direction:column;text-align:center}
}
@media (max-width:552px){
  .container{padding:0 20px}
  .section-head h2{font-size:22px}
  .cat-hero h1{font-size:27px}
  .hero-desc{font-size:15px}
  .card-body{padding:20px}
  .card h3{font-size:18px}
  .focus-item{padding:26px 20px}
  .stats-num{font-size:30px}
  .cta-inner h2{font-size:24px}
  .cta-btns .btn{width:100%}
  .faq-item summary{font-size:15px;padding:18px 20px}
  .faq-content{padding:0 20px 20px}
}

/* roulang page: category2 */
:root {
            --primary: #1679B3;
            --primary-dark: #0E4F74;
            --primary-soft: #EAF3FA;
            --accent: #FF7A32;
            --accent-dark: #E5621D;
            --bg: #F4F8FB;
            --card-bg: #FFFFFF;
            --text: #16273A;
            --text-secondary: #4F6679;
            --text-muted: #8AA0B2;
            --border: #E2EBF2;
            --success: #1EAC88;
            --danger: #E35D4F;
            --footer-bg: #12263A;
            --footer-text: #D8E4EE;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow: 0 6px 24px rgba(15, 60, 100, 0.08);
            --shadow-hover: 0 12px 32px rgba(15, 60, 100, 0.14);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', 'Segoe UI', Roboto, Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        a:hover {
            color: var(--primary-dark);
        }

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

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            font-weight: 700;
        }

        .container,
        .grid-container {
            max-width: 1200px;
            margin-right: auto;
            margin-left: auto;
            padding-right: 24px;
            padding-left: 24px;
            width: 100%;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            min-height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            background: transparent;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 122, 50, 0.28);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: #FF8A45;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 122, 50, 0.36);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 122, 50, 0.24);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-soft);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }

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

        .site-header {
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
        }

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

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--accent);
            color: #fff;
            border-radius: 10px;
            font-weight: 800;
            font-size: 18px;
            box-shadow: 0 2px 8px rgba(255, 122, 50, 0.3);
        }

        .brand-name {
            font-weight: 700;
        }

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

        .nav-list>li {
            margin: 0;
        }

        .nav-list a {
            position: relative;
            display: inline-block;
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 2px;
        }

        .nav-list a::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

        .nav-list a:hover {
            color: var(--primary);
        }

        .nav-list a:hover::after {
            transform: scaleX(0.5);
        }

        .nav-list li.active a {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-list li.active a::after {
            transform: scaleX(1);
        }

        .nav-list .nav-cta a::after {
            display: none;
        }

        .nav-list .nav-cta a {
            border: 1px solid var(--primary);
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 14px;
            color: var(--primary);
            transition: var(--transition);
        }

        .nav-list .nav-cta a:hover {
            background: var(--primary);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 18px;
            color: var(--text);
        }

        .category-hero {
            position: relative;
            padding: 88px 0 80px;
            background: #eaf3fa;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0.22;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, rgba(234, 243, 250, 0.95) 0%, rgba(234, 243, 250, 0.85) 55%, rgba(244, 248, 251, 0.4) 100%);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb i {
            font-size: 10px;
        }

        .category-hero h1 {
            font-size: 34px;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 32px;
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            max-width: 560px;
        }

        .stat-item strong {
            display: block;
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .stat-item span {
            font-size: 13px;
            color: var(--text-muted);
        }

        .section {
            padding: 96px 0;
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 15px;
        }

        .grid-cell {
            margin-bottom: 24px;
        }

        .grid-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(226, 235, 242, 0.6);
        }

        .grid-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .card-media {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

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

        .grid-card:hover .card-media img {
            transform: scale(1.03);
        }

        .badge-hot {
            position: absolute;
            top: 12px;
            left: 12px;
            background: #fff;
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 2px 8px rgba(15, 60, 100, 0.1);
        }

        .badge-hot i {
            font-size: 8px;
            color: var(--accent);
        }

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

        .card-tag {
            display: inline-flex;
            align-self: flex-start;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .card-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

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

        .tags-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            max-width: 720px;
            margin: 0 auto;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }

        .tag-pill i {
            color: var(--primary);
            font-size: 14px;
        }

        .tag-pill:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

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

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(15, 60, 100, 0.04);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            line-height: 1.5;
        }

        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0;
            color: var(--text);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            flex-shrink: 0;
            transition: transform 0.2s ease;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer p {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
        }

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

        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 32px;
            display: flex;
            flex-direction: column;
            height: 100%;
            transition: var(--transition);
            color: var(--text);
        }

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

        .related-card.current {
            border-color: var(--primary);
            background: rgba(234, 243, 250, 0.45);
        }

        .related-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }

        .related-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-secondary);
            flex: 1;
            margin-bottom: 16px;
        }

        .related-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .related-card.current .related-link {
            color: var(--primary-dark);
        }

        .cta-section {
            padding: 0 0 96px;
        }

        .cta-block {
            background: linear-gradient(135deg, #EAF3FA 0%, #F4F8FB 100%);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
        }

        .cta-block h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-block p {
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding-top: 64px;
        }

        .site-footer .brand {
            color: #fff;
        }

        .site-footer .brand-name {
            color: #fff;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(216, 228, 238, 0.75);
            margin-top: 16px;
            max-width: 320px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: rgba(216, 228, 238, 0.75);
        }

        .footer-col a {
            color: rgba(216, 228, 238, 0.75);
            font-size: 14px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(216, 228, 238, 0.6);
        }

        @media (max-width: 1024px) {
            .nav-list {
                gap: 24px;
            }
            .section {
                padding: 80px 0;
            }
            .category-hero {
                padding: 72px 0 64px;
            }
        }

        @media (max-width: 768px) {
            .container,
            .grid-container {
                padding-right: 20px;
                padding-left: 20px;
            }
            .section {
                padding: 64px 0;
            }
            .category-hero {
                padding: 56px 0 48px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .section-head h2,
            .cta-block h2 {
                font-size: 24px;
            }
            .cta-block {
                padding: 48px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 552px) {
            .nav-wrap {
                height: 64px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 32px rgba(15, 60, 100, 0.1);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list>li {
                width: 100%;
                text-align: left;
            }
            .nav-list a {
                display: block;
                padding: 14px 0;
                border-bottom: 1px solid var(--border);
                font-size: 15px;
            }
            .nav-list a::after {
                display: none;
            }
            .nav-list li.active a {
                color: var(--primary);
            }
            .nav-list .nav-cta a {
                border: 1px solid var(--primary);
                text-align: center;
                margin-top: 12px;
                border-radius: 999px;
            }
            .nav-list .nav-cta a:hover {
                background: var(--primary);
                color: #fff;
            }
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
            }
            .stat-item strong {
                font-size: 22px;
            }
            .breadcrumb {
                font-size: 12px;
                margin-bottom: 16px;
            }
            .card-body {
                padding: 20px;
            }
            .card-body h3 {
                font-size: 18px;
            }
            .tag-cloud {
                gap: 10px;
            }
            .tag-pill {
                padding: 8px 14px;
                font-size: 14px;
            }
            .faq-question {
                font-size: 15px;
                padding: 18px 20px;
            }
            .faq-question h3 {
                font-size: 15px;
            }
            .faq-answer p {
                padding: 0 20px 18px;
                font-size: 14px;
            }
            .related-card {
                padding: 24px;
            }
            .cta-section {
                padding-bottom: 64px;
            }
            .footer-bottom .container {
                flex-direction: column;
                text-align: center;
            }
        }