/* roulang page: index */
:root{
            --blue:#1769aa;
            --blue-dark:#0e4779;
            --blue-soft:#eaf5fc;
            --teal:#2b9d91;
            --orange:#ed9a53;
            --ink:#17324d;
            --muted:#6d8092;
            --line:#dce8f0;
            --paper:#ffffff;
            --wash:#f5f9fc;
            --shadow:0 14px 38px rgba(21,72,108,.10);
            --shadow-hover:0 20px 46px rgba(21,72,108,.16);
            --radius:18px;
        }
        *,*::before,*::after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;line-height:1.8;font-size:16px}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{max-width:100%;height:auto;display:block}
        button,input{font:inherit}
        :focus-visible{outline:3px solid rgba(237,154,83,.65);outline-offset:3px}
        .container{max-width:1240px}
        .site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
        .navbar{min-height:76px}
        .brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:21px;letter-spacing:.02em;color:var(--blue-dark)}
        .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);position:relative;box-shadow:0 7px 16px rgba(23,105,170,.22)}
        .brand-mark:after{content:"";position:absolute;left:14px;top:10px;border-left:12px solid #fff;border-top:8px solid transparent;border-bottom:8px solid transparent}
        .navbar-nav .nav-link{padding:10px 15px!important;color:#526b7d;font-weight:600;border-radius:10px}
        .navbar-nav .nav-link:hover,.navbar-nav .nav-link.active{color:var(--blue);background:var(--blue-soft)}
        .nav-cta,.btn-primary-custom{background:var(--blue);color:#fff!important;border:1px solid var(--blue);border-radius:11px;padding:11px 20px;font-weight:700;box-shadow:0 8px 18px rgba(23,105,170,.18)}
        .nav-cta:hover,.btn-primary-custom:hover{background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px)}
        .btn-outline-custom{border:1px solid #a9c9dc;color:var(--blue-dark);border-radius:11px;padding:11px 20px;font-weight:700;background:#fff}
        .btn-outline-custom:hover{border-color:var(--blue);background:var(--blue-soft);color:var(--blue)}
        .hero{position:relative;min-height:500px;padding:76px 0 70px;overflow:hidden;background:linear-gradient(90deg,rgba(244,250,253,.98) 0%,rgba(244,250,253,.9) 48%,rgba(244,250,253,.48) 100%),url('/assets/images/3d6488413ba29d3d.jpg') center/cover}
        .hero:after{content:"";position:absolute;right:-120px;bottom:-180px;width:440px;height:440px;border:1px solid rgba(23,105,170,.16);border-radius:50%}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;border-radius:3px;background:var(--orange)}
        h1,h2,h3,h4{font-weight:800;line-height:1.3;letter-spacing:-.02em}
        h1{font-size:clamp(34px,4.5vw,58px);max-width:740px;margin:18px 0 22px;color:var(--ink)}
        .hero-copy{max-width:720px;color:#536b7c;font-size:18px;line-height:1.95;margin-bottom:28px}
        .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
        .hero-note{display:flex;gap:22px;flex-wrap:wrap;margin-top:28px;color:var(--muted);font-size:14px}
        .hero-note strong{color:var(--blue-dark);font-size:18px;margin-right:4px}
        .section{padding:88px 0}
        .section-soft{background:var(--wash)}
        .section-head{max-width:700px;margin-bottom:38px}
        .section-head h2{font-size:clamp(27px,3vw,39px);margin:12px 0 14px}
        .section-head p{color:var(--muted);margin:0;font-size:16px}
        .value-strip{margin-top:-28px;position:relative;z-index:2}
        .value-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:25px 24px;height:100%;box-shadow:var(--shadow);display:flex;gap:16px}
        .value-card:hover,.topic-card:hover,.feature-card:hover,.quote-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
        .value-icon{width:42px;height:42px;flex:0 0 42px;border-radius:13px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800}
        .value-card h3{font-size:18px;margin:0 0 6px}.value-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
        .index-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
        .index-panel h3{font-size:23px;margin:0 0 12px}
        .index-panel p{color:var(--muted);margin-bottom:22px}
        .tag-list{display:flex;flex-wrap:wrap;gap:10px}
        .tag{padding:7px 13px;border-radius:20px;background:var(--blue-soft);color:var(--blue-dark);font-size:13px;font-weight:700;border:1px solid #d5eaf5}
        .tag.teal{background:#e9f7f4;color:#217b71;border-color:#ccece6}.tag.orange{background:#fff3e8;color:#a86024;border-color:#f6ddc4}
        .update-list{list-style:none;padding:0;margin:0}
        .update-list li{display:flex;justify-content:space-between;gap:15px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
        .update-list li:last-child{border-bottom:0}.update-list span{color:var(--muted);white-space:nowrap}
        .demo-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:stretch}
        .demo-image{min-height:350px;border-radius:var(--radius);background:linear-gradient(120deg,rgba(14,71,121,.12),rgba(14,71,121,.5)),url('/assets/images/fdeaf4523c5ff4c9.jpg') center/cover;position:relative;overflow:hidden}
        .play-badge{position:absolute;left:28px;bottom:28px;background:#fff;border-radius:13px;padding:13px 18px;display:flex;gap:10px;align-items:center;box-shadow:var(--shadow);font-weight:700;color:var(--blue-dark)}
        .play-badge i{width:28px;height:28px;border-radius:50%;background:var(--orange);position:relative}.play-badge i:after{content:"";position:absolute;left:11px;top:7px;border-left:9px solid #fff;border-top:6px solid transparent;border-bottom:6px solid transparent}
        .step-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;justify-content:center}
        .step{display:flex;gap:16px;padding:15px 0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}
        .step-no{width:32px;height:32px;border-radius:10px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;flex:0 0 32px}
        .step h3{font-size:17px;margin:0 0 4px}.step p{margin:0;color:var(--muted);font-size:14px}
        .topic-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;grid-template-rows:190px 190px;gap:18px}
        .topic-card{border-radius:var(--radius);padding:24px;position:relative;overflow:hidden;color:#fff;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:var(--shadow);transition:.25s ease;background-size:cover;background-position:center}
        .topic-card:before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(9,39,66,.78),rgba(9,39,66,.05))}
        .topic-card>*{position:relative}.topic-card.large{grid-row:span 2;background-image:url('/assets/images/382a4ae5f5aa02b4.jpg')}.topic-card.small-a{background-image:url('/assets/images/9e5d417a178f83fd.jpg')}.topic-card.small-b{background-image:url('/assets/images/c2f28da6ceeed6b6.jpg')}.topic-card.small-c{background-image:url('/assets/images/ba2b899ff1c7bf74.jpg')}.topic-card.small-d{background-image:url('/assets/images/8595b4172e3c0607.jpg')}
        .topic-card h3{font-size:20px;margin:8px 0 5px}.topic-card p{font-size:13px;line-height:1.6;margin:0;color:rgba(255,255,255,.84)}.topic-meta{font-size:12px;color:#dff2ff}
        .quote-card{height:100%;border:1px solid var(--line);border-radius:16px;background:#fff;padding:25px;transition:.25s ease}.quote-mark{font-size:35px;color:var(--orange);line-height:1}.quote-card p{color:#536b7c;margin:8px 0 20px;font-size:15px}.quote-card small{color:var(--muted);font-weight:700}
        .compare-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:auto;box-shadow:var(--shadow)}.compare-table{min-width:680px;margin:0}.compare-table th,.compare-table td{padding:18px 20px;border-bottom:1px solid var(--line);vertical-align:middle}.compare-table th{background:#f0f7fb;color:var(--blue-dark);font-size:14px}.compare-table td{color:#5d7283;font-size:14px}.compare-table td:first-child{font-weight:800;color:var(--ink)}.check{color:var(--teal);font-weight:800}.neutral{color:var(--muted)}
        .timeline{position:relative;padding-left:28px;border-left:2px solid #cfe3ef}.timeline-item{position:relative;padding:0 0 28px 24px}.timeline-item:last-child{padding-bottom:0}.timeline-item:before{content:"";position:absolute;left:-37px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--orange);border:4px solid #fff;box-shadow:0 0 0 1px #efc89e}.timeline-item time{font-size:13px;color:var(--blue);font-weight:800}.timeline-item h3{font-size:18px;margin:5px 0}.timeline-item p{margin:0;color:var(--muted);font-size:14px}
        .accordion-item{border:1px solid var(--line)!important;border-radius:13px!important;margin-bottom:12px;overflow:hidden}.accordion-button{font-weight:700;color:var(--ink);background:#fff;padding:19px 22px}.accordion-button:not(.collapsed){color:var(--blue-dark);background:var(--blue-soft);box-shadow:none}.accordion-body{color:var(--muted);font-size:14px;line-height:1.8}
        .assurance{background:var(--blue-dark);color:#fff;border-radius:var(--radius);padding:33px 38px}.assurance h2{font-size:25px;margin:0 0 8px}.assurance p{color:#c7dcea;margin:0}.assurance-item{display:flex;gap:12px;align-items:center;color:#e6f3fa;font-size:14px}.assurance-icon{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.13);display:grid;place-items:center;color:#ffd29e;font-weight:800}
        .channel-card{border:1px solid var(--line);border-radius:16px;padding:22px;background:#fff;height:100%;transition:.25s ease}.channel-card:hover{border-color:#9fc8de;box-shadow:var(--shadow)}.channel-card h3{font-size:18px;margin:0 0 8px}.channel-card p{font-size:14px;color:var(--muted);margin:0 0 14px}.channel-card a{color:var(--blue);font-size:14px;font-weight:800}
        .site-footer{background:#102f49;color:#c2d4e0;padding:58px 0 105px}.site-footer .brand{color:#fff}.site-footer h3{font-size:16px;color:#fff;margin-bottom:14px}.site-footer a{font-size:14px;color:#b8cedc;display:block;margin:7px 0}.site-footer a:hover{color:#fff}.footer-note{border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:20px;font-size:13px;color:#8faaba}
        .floating-cta{position:fixed;z-index:999;left:0;right:0;bottom:0;background:rgba(255,255,255,.96);border-top:1px solid var(--line);box-shadow:0 -8px 25px rgba(16,47,73,.09);padding:12px 0}.floating-cta p{margin:0;color:var(--ink);font-weight:700}.floating-cta small{display:block;color:var(--muted);font-weight:400}
        @media(max-width:991px){.navbar-nav{padding:14px 0}.nav-cta{display:inline-block;margin-top:8px}.hero{padding:62px 0}.demo-wrap{grid-template-columns:1fr}.topic-grid{grid-template-columns:1fr 1fr;grid-template-rows:230px 170px 170px}.topic-card.large{grid-row:span 1;grid-column:span 2}}
        @media(max-width:767px){.section{padding:65px 0}.value-strip{margin-top:0;padding-top:24px}.hero-copy{font-size:16px}.hero-note{gap:12px}.topic-grid{display:flex;flex-direction:column}.topic-card{min-height:190px}.topic-card.large{min-height:260px}.assurance{padding:27px 22px}.assurance-item{margin-top:15px}.floating-cta p{font-size:14px}.floating-cta small{display:none}}
        @media(max-width:520px){h1{font-size:34px}.hero-actions .btn-primary-custom,.hero-actions .btn-outline-custom{width:100%;text-align:center}.hero{min-height:auto}.section-head{margin-bottom:28px}.index-panel{padding:23px}.demo-image{min-height:260px}.floating-cta{padding:10px 0}.floating-cta .btn-primary-custom{padding:9px 13px;font-size:13px}}

/* roulang page: category1 */
:root{
      --blue:#1769aa;
      --blue-dark:#0e4779;
      --blue-soft:#eaf5fc;
      --teal:#2b9d91;
      --orange:#ed9a53;
      --ink:#17324d;
      --muted:#6d8092;
      --line:#dce8f0;
      --paper:#ffffff;
      --wash:#f5f9fc;
      --shadow:0 14px 38px rgba(21,72,108,.10);
      --shadow-hover:0 20px 46px rgba(21,72,108,.16);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;height:auto;display:block}
    button,input,select{font:inherit}
    .container{max-width:1240px}
    .site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .navbar{min-height:76px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:21px;letter-spacing:.02em;color:var(--blue-dark)}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);position:relative;box-shadow:0 7px 16px rgba(23,105,170,.22)}
    .brand-mark:after{content:"";position:absolute;left:14px;top:10px;border-left:12px solid #fff;border-top:8px solid transparent;border-bottom:8px solid transparent}
    .navbar-nav .nav-link{padding:10px 15px!important;color:#526b7d;font-weight:600;border-radius:10px}
    .navbar-nav .nav-link:hover,.navbar-nav .nav-link.active{color:var(--blue);background:var(--blue-soft)}
    .nav-cta,.btn-primary-custom{background:var(--blue);color:#fff!important;border:1px solid var(--blue);border-radius:11px;padding:11px 20px;font-weight:700;box-shadow:0 8px 18px rgba(23,105,170,.18)}
    .nav-cta:hover,.btn-primary-custom:hover{background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px)}
    .btn-outline-custom{border:1px solid #a9c9dc;color:var(--blue-dark);border-radius:11px;padding:11px 20px;font-weight:700;background:#fff}
    .btn-outline-custom:hover{border-color:var(--blue);background:var(--blue-soft);color:var(--blue)}
    .page-intro{padding:72px 0 64px;background:linear-gradient(110deg,rgba(245,250,253,.98),rgba(245,250,253,.84)),url('/assets/images/fdeaf4523c5ff4c9.jpg') center/cover;border-bottom:1px solid var(--line)}
    .breadcrumb{font-size:14px;color:var(--muted);margin-bottom:25px}
    .breadcrumb a{color:var(--blue)}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;border-radius:3px;background:var(--orange)}
    .page-intro h1{font-size:clamp(32px,4vw,56px);line-height:1.2;margin:14px 0 18px;letter-spacing:-.03em}
    .intro-text{max-width:700px;color:#536b7c;font-size:18px;line-height:1.9;margin:0}
    .section{padding:86px 0}
    .section-soft{background:var(--wash)}
    .section-head{max-width:730px;margin-bottom:35px}
    .section-head h2{font-size:clamp(27px,3vw,39px);margin:12px 0 14px;line-height:1.3}
    .section-head p{color:var(--muted);margin:0}
    .filter-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
    .filter-label{font-size:13px;font-weight:800;color:var(--blue-dark);margin-bottom:10px}
    .filter-select,.filter-input{width:100%;border:1px solid #cbdde8;border-radius:11px;padding:12px 14px;color:var(--ink);background:#fff;outline:none}
    .filter-select:focus,.filter-input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(23,105,170,.12)}
    .tag-list{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:7px 13px;border-radius:20px;background:var(--blue-soft);color:var(--blue-dark);font-size:13px;font-weight:700;border:1px solid #d5eaf5}
    .tag.teal{background:#e9f7f4;color:#217b71;border-color:#ccece6}
    .tag.orange{background:#fff3e8;color:#a86024;border-color:#f6ddc4}
    .content-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .content-card{display:flex;gap:20px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow);transition:.25s ease}
    .content-card:hover,.feature-card:hover,.guide-item:hover,.faq-wrap:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
    .content-thumb{width:150px;min-width:150px;height:122px;border-radius:12px;object-fit:cover}
    .content-card h3{font-size:19px;line-height:1.45;margin:8px 0 7px}
    .content-card p{color:var(--muted);font-size:14px;line-height:1.7;margin:0 0 10px}
    .meta-line{display:flex;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:12px}
    .more-link{display:inline-flex;margin-top:13px;color:var(--blue);font-size:14px;font-weight:800}
    .more-link:hover{color:var(--blue-dark);gap:4px}
    .feature-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr;gap:18px}
    .feature-card{min-height:230px;border-radius:var(--radius);overflow:hidden;position:relative;background-size:cover;background-position:center;box-shadow:var(--shadow);transition:.25s ease;color:#fff;display:flex;align-items:flex-end}
    .feature-card:before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(9,39,66,.82),rgba(9,39,66,.08))}
    .feature-card .feature-copy{position:relative;padding:25px}
    .feature-card.large{min-height:330px;background-image:url('/assets/images/382a4ae5f5aa02b4.jpg')}
    .feature-card.mid{background-image:url('/assets/images/9e5d417a178f83fd.jpg')}
    .feature-card.last{background-image:url('/assets/images/c2f28da6ceeed6b6.jpg')}
    .feature-card h3{font-size:21px;margin:8px 0 5px}
    .feature-card p{font-size:13px;line-height:1.65;margin:0;color:rgba(255,255,255,.85)}
    .guide-layout{display:grid;grid-template-columns:1fr 1.35fr;gap:26px;align-items:stretch}
    .guide-image{min-height:330px;border-radius:var(--radius);background:url('/assets/images/ba2b899ff1c7bf74.jpg') center/cover;position:relative;overflow:hidden}
    .guide-image:after{content:"黄果视频主题索引";position:absolute;left:22px;bottom:20px;padding:8px 13px;border-radius:9px;background:#fff;color:var(--blue-dark);font-weight:800;font-size:14px;box-shadow:var(--shadow)}
    .guide-list{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .guide-item{background:#fff;border:1px solid var(--line);border-radius:15px;padding:21px;transition:.25s ease}
    .guide-number{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;background:var(--blue-soft);border-radius:9px;color:var(--blue);font-weight:800;margin-bottom:12px}
    .guide-item h3{font-size:17px;margin:0 0 6px}
    .guide-item p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
    .timeline{border-left:2px solid #cfe3ee;padding-left:27px}
    .timeline-item{position:relative;padding:0 0 28px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;left:-36px;top:6px;width:15px;height:15px;border:4px solid var(--paper);border-radius:50%;background:var(--orange);box-shadow:0 0 0 1px #f0cba9}
    .timeline-date{font-size:13px;color:var(--blue);font-weight:800}
    .timeline-item h3{font-size:18px;margin:6px 0}
    .timeline-item p{font-size:14px;color:var(--muted);margin:0}
    .faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.25s ease}
    .accordion-item{border:0;border-bottom:1px solid var(--line)}
    .accordion-item:last-child{border-bottom:0}
    .accordion-button{padding:20px 24px;color:var(--ink);font-weight:800;background:#fff;box-shadow:none!important}
    .accordion-button:not(.collapsed){color:var(--blue-dark);background:var(--blue-soft)}
    .accordion-button:focus{box-shadow:0 0 0 3px rgba(23,105,170,.12)!important}
    .accordion-body{padding:0 24px 22px;color:var(--muted);line-height:1.8}
    .cta-panel{padding:36px 40px;border-radius:var(--radius);background:var(--blue-dark);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px;box-shadow:var(--shadow)}
    .cta-panel h2{font-size:28px;margin:0 0 8px}
    .cta-panel p{margin:0;color:#d7eaf6}
    .cta-panel .btn-primary-custom{background:#fff;color:var(--blue-dark)!important;border-color:#fff;box-shadow:none}
    .cta-panel .btn-primary-custom:hover{background:var(--blue-soft);border-color:var(--blue-soft)}
    .site-footer{background:#102f49;color:#dceaf3;padding:62px 0 28px}
    .site-footer .brand{color:#fff}
    .site-footer h3{font-size:15px;color:#fff;margin:5px 0 15px}
    .site-footer a:not(.brand){display:block;color:#b8cdda;font-size:14px;margin:8px 0}
    .site-footer a:not(.brand):hover{color:#fff}
    .site-footer p{color:#b8cdda;font-size:14px;line-height:1.8}
    .footer-note{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:22px;color:#9fb8c8;font-size:13px}
    .fixed-cta{position:fixed;right:22px;bottom:22px;z-index:999;background:var(--orange);color:#fff;padding:12px 19px;border-radius:12px;font-weight:800;box-shadow:0 10px 25px rgba(157,91,36,.25)}
    .fixed-cta:hover{background:#d9813b;color:#fff;transform:translateY(-2px)}
    :focus-visible{outline:3px solid rgba(237,154,83,.75);outline-offset:3px}
    @media(max-width:991.98px){
      .navbar-nav{padding:15px 0}
      .nav-cta{display:inline-block;margin-top:8px}
      .feature-grid{grid-template-columns:1fr 1fr}
      .feature-card.large{grid-column:span 2}
      .guide-layout{grid-template-columns:1fr}
    }
    @media(max-width:767.98px){
      .page-intro{padding:52px 0 48px}
      .section{padding:62px 0}
      .content-list,.feature-grid,.guide-list{grid-template-columns:1fr}
      .feature-card.large{grid-column:auto}
      .content-thumb{width:112px;min-width:112px;height:100px}
      .cta-panel{padding:28px 24px;display:block}
      .cta-panel .btn-primary-custom{margin-top:20px}
      .fixed-cta{left:16px;right:16px;bottom:15px;text-align:center}
      body{padding-bottom:60px}
    }
    @media(max-width:520px){
      .brand{font-size:19px}
      .content-card{display:block}
      .content-thumb{width:100%;height:170px;margin-bottom:15px}
      .filter-panel{padding:18px}
      .page-intro h1{font-size:34px}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}