/* roulang page: index */
:root{
      --brand:#2f6fed;
      --brand-dark:#1e56c8;
      --brand-soft:#eaf1ff;
      --ink:#17243a;
      --muted:#64748b;
      --soft:#f4f7fb;
      --line:#dce5f2;
      --orange:#ed8b55;
      --purple:#7568d8;
      --radius:20px;
      --shadow:0 16px 42px rgba(34,72,125,.09);
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:#fff;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:all .25s ease}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}
    .site-header{
      position:relative;
      z-index:20;
      background:rgba(255,255,255,.96);
      border-bottom:1px solid var(--line);
    }
    .nav-wrap{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{
      width:38px;height:38px;border-radius:12px;background:var(--brand);
      color:#fff;display:grid;place-items:center;font-weight:800;font-size:16px;
      box-shadow:0 8px 18px rgba(47,111,237,.22)
    }
    .brand-name{font-size:17px;font-weight:800;letter-spacing:.02em}
    .brand-sub{font-size:11px;color:var(--muted);display:block;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-link{padding:9px 14px;border-radius:10px;color:#53647c;font-size:14px;font-weight:600}
    .nav-link:hover,.nav-link.active{color:var(--brand);background:var(--brand-soft)}
    .nav-action{display:flex;align-items:center;gap:10px}
    .search-pill{display:flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line);border-radius:11px;color:var(--muted);font-size:13px;background:#fff}
    .search-pill:hover{border-color:#aac4f5;color:var(--brand)}
    .mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px;color:var(--ink)}
    .hero{
      background:linear-gradient(180deg,#f7faff 0%,#fff 100%);
      border-bottom:1px solid #edf2f8;
      padding:48px 0 42px;
    }
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.04em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--brand);display:inline-block}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,60px);line-height:1.16;letter-spacing:-.045em;margin:16px 0 20px;max-width:680px}
    .hero-copy{font-size:17px;color:var(--muted);max-width:650px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:11px;padding:12px 20px;font-weight:700;font-size:14px;border:1px solid transparent;transition:all .25s ease}
    .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(47,111,237,.2)}
    .btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 25px rgba(47,111,237,.27)}
    .btn-secondary{border-color:#b9cbea;background:#fff;color:var(--brand)}
    .btn-secondary:hover{background:var(--brand-soft);border-color:var(--brand)}
    .btn:focus,input:focus,textarea:focus,.search-pill:focus{outline:3px solid rgba(47,111,237,.2);outline-offset:2px}
    .hero-points{display:flex;flex-wrap:wrap;gap:20px;color:#50627b;font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .dot{width:7px;height:7px;border-radius:50%;background:#40b98e;display:inline-block}
    .hero-panel{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .panel-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #edf1f7;padding-bottom:16px;margin-bottom:16px}
    .panel-title{font-size:14px;font-weight:800}
    .status{font-size:12px;color:#27906e;background:#eaf8f2;border-radius:7px;padding:4px 8px}
    .panel-main{background:var(--brand-soft);border-radius:16px;padding:20px;margin-bottom:14px}
    .panel-main strong{font-size:30px;line-height:1;color:var(--brand);display:block;margin:7px 0}
    .panel-main small,.panel-row small{color:var(--muted);font-size:12px}
    .panel-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .mini-stat{border:1px solid #e5ebf4;border-radius:14px;padding:14px;background:#fff}
    .mini-stat b{display:block;font-size:20px;margin-top:4px}
    .section{padding:88px 0}
    .section-soft{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
    .section-kicker{color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
    h2{font-size:clamp(28px,3.4vw,40px);line-height:1.25;letter-spacing:-.03em;margin:8px 0 0}
    .section-desc{max-width:560px;color:var(--muted);font-size:15px;line-height:1.85;margin:0}
    .metrics{display:grid;grid-template-columns:1.35fr .85fr .85fr .85fr;gap:16px}
    .metric-card,.service-card,.quote-card,.timeline-card,.faq-item,.form-box,.trust-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .metric-card{padding:23px;min-height:150px}
    .metric-card.featured{background:var(--brand);color:#fff;border-color:var(--brand)}
    .metric-label{font-size:13px;color:var(--muted);font-weight:600}
    .featured .metric-label{color:#dbe7ff}
    .metric-number{font-size:38px;font-weight:800;line-height:1.1;margin:14px 0 8px}
    .metric-note{font-size:12px;color:var(--muted)}
    .featured .metric-note{color:#dbe7ff}
    .matrix{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .service-card{padding:27px;transition:transform .25s,box-shadow .25s}
    .service-card:hover,.quote-card:hover,.trust-card:hover{transform:translateY(-4px);box-shadow:0 20px 46px rgba(34,72,125,.14)}
    .service-card.large{grid-row:span 2;background:#fff}
    .service-icon{width:42px;height:42px;border-radius:13px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:800;margin-bottom:18px}
    .service-card h3{font-size:21px;margin-bottom:10px}
    .service-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:18px}
    .service-list{padding:0;margin:0;list-style:none;display:grid;gap:10px}
    .service-list li{font-size:13px;color:#4c607b;display:flex;gap:9px;align-items:flex-start}
    .service-list li:before{content:"✓";color:var(--brand);font-weight:800}
    .scene-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px;align-items:stretch}
    .scene-note{background:#1e3557;color:#fff;border-radius:22px;padding:34px}
    .scene-note h3{font-size:25px;line-height:1.35;margin:12px 0}
    .scene-note p{color:#c9d7ed;font-size:14px;line-height:1.9}
    .scene-step{display:grid;grid-template-columns:52px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
    .scene-step:last-child{border-bottom:0}
    .step-no{width:42px;height:42px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:800}
    .scene-step h3{font-size:17px;margin:0 0 5px}
    .scene-step p{font-size:14px;color:var(--muted);margin:0}
    .timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .timeline-card{padding:23px;position:relative}
    .timeline-card:before{content:"";height:3px;width:42px;background:var(--orange);position:absolute;top:0;left:23px;border-radius:4px}
    .timeline-time{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.08em}
    .timeline-card h3{font-size:18px;margin:12px 0 8px}
    .timeline-card p{font-size:13px;color:var(--muted);margin:0}
    .trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .trust-card{padding:20px}
    .trust-card b{display:block;font-size:15px;margin-bottom:6px}
    .trust-card span{font-size:13px;color:var(--muted)}
    .quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .quote-card{padding:26px}
    .quote-card p{font-size:16px;line-height:1.9;margin-bottom:20px}
    .quote-author{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--muted)}
    .avatar{width:34px;height:34px;border-radius:50%;background:#dce9ff;color:var(--brand);display:grid;place-items:center;font-weight:800}
    .news-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:24px}
    .news-list{border-top:1px solid var(--line)}
    .news-item{display:flex;justify-content:space-between;gap:20px;padding:19px 0;border-bottom:1px solid var(--line);font-size:15px;font-weight:700}
    .news-item:hover{color:var(--brand);padding-left:7px}
    .news-item span{color:#8a98aa;font-size:12px;white-space:nowrap;font-weight:500}
    .news-feature{background:var(--brand-soft);border-radius:20px;padding:28px}
    .news-feature b{color:var(--brand);font-size:12px}
    .news-feature h3{font-size:23px;line-height:1.4;margin:13px 0}
    .news-feature p{font-size:14px;color:var(--muted);line-height:1.85}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .faq-item{padding:23px 25px}
    .faq-item h3{font-size:16px;margin-bottom:9px}
    .faq-item p{font-size:14px;color:var(--muted);line-height:1.85;margin:0}
    .cta-section{background:#eef4fb;padding:80px 0}
    .cta-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:30px;align-items:start}
    .cta-copy h2{margin-bottom:16px}
    .cta-copy p{color:var(--muted);font-size:15px;line-height:1.9}
    .form-box{padding:27px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .field{display:flex;flex-direction:column;gap:7px}
    .field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:700;color:#435671}
    .field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 13px;background:#fbfcfe;color:var(--ink);font-size:14px}
    .field textarea{min-height:92px;resize:vertical}
    .form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px}
    .form-tip{font-size:12px;color:var(--muted)}
    footer{background:#17243a;color:#dbe5f5;padding:52px 0 24px}
    .footer-top{display:flex;justify-content:space-between;gap:30px;padding-bottom:35px;border-bottom:1px solid rgba(219,229,245,.16)}
    footer .brand-name{color:#fff}
    footer .brand-sub{color:#9fb0c8}
    .footer-links{display:flex;gap:24px;font-size:13px;color:#b7c6da}
    .footer-links a:hover{color:#fff}
    .copyright{display:flex;justify-content:space-between;gap:20px;padding-top:22px;font-size:12px;color:#91a4bf}
    @media (max-width:1024px){
      .hero-grid,.scene-grid,.cta-grid{grid-template-columns:1fr}
      .hero-panel{max-width:650px}
      .metrics{grid-template-columns:1fr 1fr}
      .metric-card.featured{grid-column:span 2}
    }
    @media (max-width:768px){
      .container{width:min(100% - 30px,620px)}
      .nav-wrap{min-height:64px}
      .mobile-toggle{display:block}
      .nav-links,.nav-action{display:none}
      .nav-links.open{display:flex;position:absolute;left:15px;right:15px;top:70px;flex-direction:column;align-items:stretch;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
      .nav-links.open .nav-link{padding:12px}
      .hero{padding:38px 0}
      h1{font-size:39px}
      .section{padding:64px 0}
      .section-head{display:block}
      .section-desc{margin-top:14px}
      .matrix,.news-layout,.faq-grid,.quote-grid{grid-template-columns:1fr}
      .service-card.large{grid-row:auto}
      .timeline,.trust-row{grid-template-columns:1fr 1fr}
      .footer-top,.copyright{display:block}
      .footer-links{margin-top:22px;flex-wrap:wrap}
      .copyright div+div{margin-top:8px}
    }
    @media (max-width:520px){
      .brand-name{font-size:15px}
      .brand-sub{display:none}
      .hero-actions .btn{width:100%}
      .hero-points{display:grid;gap:8px}
      .metrics,.timeline,.trust-row{grid-template-columns:1fr}
      .metric-card.featured{grid-column:auto}
      .form-grid{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .form-foot{display:block}
      .form-foot .btn{width:100%;margin-top:15px}
      .scene-note{padding:25px}
    }

/* roulang page: category2 */
:root{
      --brand:#2f6fed;
      --brand-dark:#1e56c8;
      --brand-soft:#eaf1ff;
      --ink:#17243a;
      --muted:#64748b;
      --soft:#f4f7fb;
      --line:#dce5f2;
      --orange:#ed8b55;
      --purple:#7568d8;
      --radius:20px;
      --shadow:0 16px 42px rgba(34,72,125,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--ink);background:#fff;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      line-height:1.75;-webkit-font-smoothing:antialiased
    }
    a{text-decoration:none;color:inherit;transition:all .25s ease}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}
    .site-header{position:relative;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
    .nav-wrap{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:16px;box-shadow:0 8px 18px rgba(47,111,237,.22)}
    .brand-name{font-size:17px;font-weight:800;letter-spacing:.02em}
    .brand-sub{font-size:11px;color:var(--muted);display:block;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-link{padding:9px 14px;border-radius:10px;color:#53647c;font-size:14px;font-weight:600}
    .nav-link:hover,.nav-link.active{color:var(--brand);background:var(--brand-soft)}
    .nav-action{display:flex;align-items:center;gap:10px}
    .search-pill{display:flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line);border-radius:11px;color:var(--muted);font-size:13px;background:#fff}
    .search-pill:hover{border-color:#aac4f5;color:var(--brand)}
    .mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px;color:var(--ink)}
    .hero{background:linear-gradient(180deg,#f7faff 0%,#fff 100%);border-bottom:1px solid #edf2f8;padding:62px 0 58px}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.04em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--brand);display:inline-block}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,60px);line-height:1.16;letter-spacing:-.045em;margin:18px 0 20px}
    h2{font-size:clamp(28px,3vw,40px);line-height:1.25;letter-spacing:-.025em;margin-bottom:14px}
    h3{line-height:1.35}
    .hero-copy{font-size:17px;color:var(--muted);max-width:650px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:11px;padding:12px 20px;font-weight:700;font-size:14px;border:1px solid transparent;transition:all .25s ease}
    .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(47,111,237,.2)}
    .btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 25px rgba(47,111,237,.27)}
    .btn-secondary{border-color:#b9cbea;background:#fff;color:var(--brand)}
    .btn-secondary:hover{background:var(--brand-soft);border-color:var(--brand)}
    .btn:focus,input:focus,textarea:focus,.search-pill:focus{outline:3px solid rgba(47,111,237,.2);outline-offset:2px}
    .hero-points{display:flex;flex-wrap:wrap;gap:18px;color:#50627b;font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .hero-panel{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .panel-title{font-size:14px;font-weight:800}
    .panel-main{background:var(--brand-soft);border-radius:16px;padding:20px;margin:15px 0 14px}
    .panel-main strong{font-size:32px;line-height:1;color:var(--brand);display:block;margin:7px 0}
    .panel-main small,.panel-row small{color:var(--muted);font-size:12px}
    .panel-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .panel-row>div{padding:15px;border:1px solid var(--line);border-radius:14px}
    .panel-row b{display:block;font-size:22px;margin-top:4px}
    .status{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:#3d7a62}
    .status:before{content:"";width:7px;height:7px;border-radius:50%;background:#50b88b}
    .section{padding:82px 0}
    .section-soft{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
    .section-kicker{color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.12em}
    .section-desc{max-width:570px;color:var(--muted);font-size:15px;line-height:1.85;margin:0}
    .metric-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:14px}
    .metric-card,.service-card,.timeline-card,.faq-item,.form-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .metric-card{padding:23px;min-height:146px}
    .metric-card.featured{background:var(--brand);color:#fff;border-color:var(--brand)}
    .metric-card b{font-size:32px;display:block;line-height:1.2;margin:12px 0 4px}
    .metric-label{font-size:13px;font-weight:700;color:#50627b}
    .metric-note{font-size:12px;color:var(--muted)}
    .featured .metric-label,.featured .metric-note{color:#dbe7ff}
    .service-layout{display:grid;grid-template-columns:1fr 1fr .82fr;gap:16px}
    .service-card{padding:26px;transition:transform .25s,box-shadow .25s}
    .service-card:hover{transform:translateY(-4px);box-shadow:0 20px 46px rgba(34,72,125,.14)}
    .service-card.tall{grid-row:span 2;background:#fff}
    .service-card h3{font-size:20px;margin:15px 0 9px}
    .service-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:17px}
    .service-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-weight:800}
    .service-card:nth-child(2) .service-icon{background:#fff0e8;color:var(--orange)}
    .service-card:nth-child(3) .service-icon{background:#f0edff;color:var(--purple)}
    .service-list{padding:0;margin:0;list-style:none;display:grid;gap:9px}
    .service-list li{font-size:13px;color:#4c607b;display:flex;gap:9px;align-items:flex-start}
    .service-list li:before{content:"✓";color:var(--brand);font-weight:800}
    .comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compare-card{padding:28px;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
    .compare-card.highlight{border-color:#a9c5fa;background:#f8fbff}
    .compare-card h3{font-size:19px;margin-bottom:18px}
    .compare-row{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding:13px 0;font-size:14px}
    .compare-row span{color:var(--muted)}
    .compare-row b{color:var(--ink);text-align:right}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:22px}
    .step{padding:20px 0;border-top:3px solid var(--brand)}
    .step em{font-style:normal;color:var(--brand);font-size:12px;font-weight:800}
    .step h3{font-size:17px;margin:8px 0}
    .step p{color:var(--muted);font-size:13px;margin:0}
    .faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:start}
    .faq-intro{padding:28px;background:var(--brand-soft);border-radius:var(--radius)}
    .faq-intro p{color:#526783;font-size:14px;line-height:1.85}
    .faq-list{display:grid;gap:11px}
    .faq-item{padding:20px 23px}
    .faq-item h3{font-size:16px;margin-bottom:7px}
    .faq-item p{font-size:14px;color:var(--muted);line-height:1.8;margin:0}
    .cta{padding:80px 0;background:#f7faff}
    .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
    .form-box{padding:30px}
    .form-box h2{font-size:28px}
    .form-box p{color:var(--muted);font-size:14px}
    .field{display:grid;gap:7px;margin-bottom:15px}
    .field label{font-size:13px;font-weight:700}
    .field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:11px;padding:11px 13px;color:var(--ink);background:#fff}
    .field textarea{min-height:92px;resize:vertical}
    .cta-note{padding:30px;border-radius:var(--radius);background:var(--brand);color:#fff;display:flex;flex-direction:column;justify-content:center}
    .cta-note h2{font-size:30px}
    .cta-note p{color:#dce8ff;font-size:15px;line-height:1.9}
    .cta-note .btn-secondary{background:#fff;border-color:#fff}
    footer{padding:32px 0 22px;border-top:1px solid var(--line);background:#fff}
    .footer-top{display:flex;justify-content:space-between;align-items:center;gap:25px}
    .footer-links{display:flex;gap:22px;color:#60718a;font-size:13px}
    .footer-links a:hover{color:var(--brand)}
    .copyright{display:flex;justify-content:space-between;gap:20px;padding-top:22px;margin-top:22px;border-top:1px solid var(--line);color:#8a98aa;font-size:12px}
    @media(max-width:1024px){
      .hero-grid{gap:30px}
      .metric-grid{grid-template-columns:1fr 1fr}
      .metric-card.featured{grid-column:span 2}
      .service-layout{grid-template-columns:1fr 1fr}
      .service-card.tall{grid-row:auto}
    }
    @media(max-width:768px){
      .container{width:min(100% - 30px,600px)}
      .nav-wrap{min-height:64px}
      .nav-links{display:none;position:absolute;top:65px;left:15px;right:15px;margin:0;padding:10px;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-link{display:block}
      .nav-action .search-pill{display:none}
      .mobile-toggle{display:block}
      .hero{padding:45px 0}
      .hero-grid,.comparison,.faq-grid,.cta-grid{grid-template-columns:1fr}
      .section{padding:62px 0}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .service-layout{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr}
      .footer-top,.copyright{display:block}
      .footer-links{margin-top:22px;flex-wrap:wrap;gap:12px 20px}
      .copyright div+div{margin-top:6px}
    }
    @media(max-width:520px){
      h1{font-size:36px}
      .metric-grid{grid-template-columns:1fr}
      .metric-card.featured{grid-column:auto}
      .panel-row{grid-template-columns:1fr 1fr}
      .hero-actions .btn{width:100%}
      .compare-card,.form-box,.cta-note{padding:23px}
    }

/* roulang page: category1 */
:root{
      --brand:#2f6fed;
      --brand-dark:#1e56c8;
      --brand-soft:#eaf1ff;
      --ink:#17243a;
      --muted:#64748b;
      --soft:#f4f7fb;
      --line:#dce5f2;
      --orange:#ed8b55;
      --purple:#7568d8;
      --radius:20px;
      --shadow:0 16px 42px rgba(34,72,125,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--ink);background:#fff;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      line-height:1.75;-webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:all .25s ease}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}
    .site-header{position:relative;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}
    .nav-wrap{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:16px;box-shadow:0 8px 18px rgba(47,111,237,.22)}
    .brand-name{font-size:17px;font-weight:800;letter-spacing:.02em}
    .brand-sub{font-size:11px;color:var(--muted);display:block;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-link{padding:9px 14px;border-radius:10px;color:#53647c;font-size:14px;font-weight:600}
    .nav-link:hover,.nav-link.active{color:var(--brand);background:var(--brand-soft)}
    .nav-action{display:flex;align-items:center;gap:10px}
    .search-pill{display:flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line);border-radius:11px;color:var(--muted);font-size:13px;background:#fff}
    .search-pill:hover{border-color:#aac4f5;color:var(--brand)}
    .mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px;color:var(--ink)}
    .hero{background:linear-gradient(180deg,#f7faff 0%,#fff 100%);border-bottom:1px solid #edf2f8;padding:60px 0 54px}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.04em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--brand);display:inline-block}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,60px);line-height:1.16;letter-spacing:-.045em;margin:18px 0 20px}
    h2{font-size:clamp(28px,3.2vw,40px);line-height:1.25;letter-spacing:-.03em;margin-bottom:12px}
    .hero-copy{font-size:17px;color:var(--muted);max-width:650px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:11px;padding:12px 20px;font-weight:700;font-size:14px;border:1px solid transparent;transition:all .25s ease}
    .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(47,111,237,.2)}
    .btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 25px rgba(47,111,237,.27)}
    .btn-secondary{border-color:#b9cbea;background:#fff;color:var(--brand)}
    .btn-secondary:hover{background:var(--brand-soft);border-color:var(--brand)}
    .btn:focus,input:focus,textarea:focus,.search-pill:focus{outline:3px solid rgba(47,111,237,.2);outline-offset:2px}
    .hero-points{display:flex;flex-wrap:wrap;gap:20px;color:#50627b;font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .hero-panel{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .panel-title{font-size:14px;font-weight:800}
    .panel-main{background:var(--brand-soft);border-radius:16px;padding:20px;margin:16px 0 14px}
    .panel-main strong{font-size:30px;line-height:1;color:var(--brand);display:block;margin:7px 0}
    .panel-main small,.panel-row small{color:var(--muted);font-size:12px}
    .panel-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .panel-row>div{padding:15px;border:1px solid var(--line);border-radius:15px}
    .section{padding:84px 0}
    .section-soft{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
    .section-kicker{color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.12em}
    .section-desc{max-width:560px;color:var(--muted);font-size:15px;line-height:1.85;margin:0}
    .metric-card,.service-card,.faq-item,.form-box,.trust-card,.compare-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .metric-card{padding:23px;min-height:150px}
    .metric-card.featured{background:var(--brand);color:#fff;border-color:var(--brand)}
    .featured .metric-label,.featured .metric-note{color:#dbe7ff}
    .metric-label{font-size:13px;color:var(--muted);font-weight:700}
    .metric-number{font-size:36px;font-weight:800;line-height:1.2;margin:14px 0 8px}
    .metric-note{font-size:12px;color:var(--muted)}
    .service-card{padding:27px;transition:transform .25s,box-shadow .25s}
    .service-card:hover,.trust-card:hover,.compare-box:hover{transform:translateY(-4px);box-shadow:0 20px 46px rgba(34,72,125,.14)}
    .service-card.large{grid-row:span 2;background:#fff}
    .service-card h3{font-size:21px;margin:13px 0 10px}
    .service-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:18px}
    .icon-box{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-size:19px;font-weight:800}
    .service-list{padding:0;margin:0;list-style:none;display:grid;gap:10px}
    .service-list li{font-size:13px;color:#4c607b;display:flex;gap:9px;align-items:flex-start}
    .service-list li:before{content:"✓";color:var(--brand);font-weight:800}
    .matrix{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
    .matrix .large{grid-row:span 2}
    .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .compare-box{padding:30px;transition:transform .25s,box-shadow .25s}
    .compare-box.highlight{border-color:#a9c6fb;background:#fbfdff}
    .compare-tag{display:inline-block;padding:5px 9px;border-radius:8px;background:#fff1ea;color:#c96836;font-size:12px;font-weight:800}
    .compare-box.highlight .compare-tag{background:var(--brand-soft);color:var(--brand)}
    .compare-box ul{padding:0;margin:22px 0 0;list-style:none;display:grid;gap:15px}
    .compare-box li{display:flex;gap:10px;color:#53647c;font-size:14px}
    .compare-box li span{color:var(--orange);font-weight:800}
    .compare-box.highlight li span{color:var(--brand)}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:42px;align-items:start}
    .faq-intro{position:sticky;top:22px}
    .faq-intro p{color:var(--muted);font-size:15px;line-height:1.9}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:20px 23px}
    .faq-item summary{cursor:pointer;font-weight:800;list-style:none;padding-right:22px;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--brand);font-size:20px;line-height:1}
    .faq-item[open] summary:after{content:"－"}
    .faq-answer{color:var(--muted);font-size:14px;line-height:1.85;margin:13px 0 0}
    .cta{padding:30px;border-radius:24px;background:var(--brand);color:#fff}
    .cta p{color:#dbe7ff;max-width:620px}
    .cta .btn-secondary{border-color:#d5e2ff}
    .form-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:22px;align-items:stretch}
    .form-box{padding:28px}
    .form-box h3{font-size:22px;margin-bottom:9px}
    .form-box p{color:var(--muted);font-size:14px;line-height:1.8}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    label{display:grid;gap:7px;color:#53647c;font-size:13px;font-weight:700}
    input,textarea{width:100%;border:1px solid var(--line);border-radius:11px;padding:11px 13px;color:var(--ink);background:#fbfdff}
    textarea{min-height:102px;resize:vertical}
    .field-full{grid-column:1/-1}
    .trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px}
    .trust-card{padding:20px}
    .trust-card b{display:block;font-size:15px;margin-bottom:6px}
    .trust-card span{font-size:13px;color:var(--muted)}
    footer{background:#f7f9fc;border-top:1px solid var(--line);padding:34px 0 22px}
    .footer-top{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:26px}
    .footer-links{display:flex;gap:22px;color:#64748b;font-size:13px}
    .footer-links a:hover{color:var(--brand)}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:18px;color:#8996a8;font-size:12px}
    @media(max-width:1024px){
      .hero-grid{gap:30px}
      .nav-links{gap:0}
      .nav-link{padding:8px 9px}
      .matrix{grid-template-columns:1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(100% - 30px,620px)}
      .nav-wrap{min-height:65px}
      .nav-action{display:none}
      .mobile-toggle{display:block}
      .nav-links{display:none;position:absolute;left:15px;right:15px;top:70px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-link{padding:11px 13px}
      .hero{padding:42px 0}
      .hero-grid,.faq-layout,.form-layout{grid-template-columns:1fr}
      .faq-intro{position:static}
      .section{padding:62px 0}
      .section-head{display:block;margin-bottom:25px}
      .section-desc{margin-top:12px}
      .matrix,.compare-grid{grid-template-columns:1fr}
      .matrix .large{grid-row:auto}
      .trust-row{grid-template-columns:1fr 1fr}
      .footer-top,.copyright{display:block}
      .footer-links{margin-top:22px;flex-wrap:wrap;gap:12px 20px}
      .copyright div+div{margin-top:7px}
    }
    @media(max-width:520px){
      h1{font-size:37px}
      .brand-name{font-size:15px}
      .hero-actions .btn{width:100%}
      .panel-row,.form-grid{grid-template-columns:1fr}
      .field-full{grid-column:auto}
      .trust-row{grid-template-columns:1fr}
      .compare-box,.form-box{padding:22px}
    }