/* roulang page: index */
:root{
      --blue:#3568c8;--blue-dark:#224b99;--blue-soft:#edf4ff;--ink:#1f2d46;
      --muted:#71809a;--line:#dfe7f2;--paper:#fff;--bg:#f7f9fc;--cyan:#39a9ae;
      --warm:#e58b63;--radius:18px;--shadow:0 16px 45px rgba(40,73,130,.10);
      --shadow-sm:0 8px 24px rgba(40,73,130,.08)
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container{max-width:1160px}
    .site-header{padding:24px 16px 0;position:relative;z-index:10}
    .dock{max-width:1080px;margin:auto;background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:18px;padding:10px 14px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:20px}
    .brand{font-weight:800;font-size:18px;letter-spacing:-.5px;white-space:nowrap;color:var(--blue-dark)}
    .brand-mark{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;background:var(--blue);color:#fff;border-radius:9px;margin-right:8px;font-size:14px}
    .nav-links{display:flex;gap:5px;align-items:center;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:10px;color:var(--muted);font-size:14px}
    .nav-links a:hover,.nav-links a.active{background:var(--blue-soft);color:var(--blue-dark)}
    .nav-cta,.btn-main{background:var(--blue);color:#fff;border:0;border-radius:11px;padding:11px 18px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:7px}
    .nav-cta:hover,.btn-main:hover{background:var(--blue-dark);color:#fff;box-shadow:0 8px 18px rgba(53,104,200,.22);transform:translateY(-1px)}
    .hero{padding:88px 0 78px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:480px;height:480px;border:1px solid #e1ebfa;border-radius:50%;right:-160px;top:5px;opacity:.7}
    .eyebrow,.section-kicker{font-size:12px;letter-spacing:1.8px;color:var(--blue);font-weight:800;text-transform:uppercase}
    h1{font-size:clamp(40px,5vw,68px);line-height:1.12;letter-spacing:-2px;margin:14px 0 22px;font-weight:800}
    h2{font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-1px;margin:8px 0 14px;font-weight:800}
    h3{font-size:19px;line-height:1.35;margin:0 0 8px;font-weight:750}
    .hero-copy{font-size:17px;color:var(--muted);max-width:610px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 24px}
    .btn-light{border:1px solid #cddbee;background:#fff;color:var(--blue-dark);border-radius:11px;padding:10px 17px;font-weight:700}
    .btn-light:hover{border-color:var(--blue);background:var(--blue-soft)}
    .hero-points{display:flex;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .hero-points strong{display:block;color:var(--ink);font-size:17px}
    .preview-panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow);position:relative}
    .panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:16px}
    .panel-title{font-weight:800}.status{font-size:12px;color:#188b83;background:#e8f8f4;padding:5px 9px;border-radius:20px}
    .filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:15px}
    .tag{font-size:12px;color:var(--blue-dark);background:var(--blue-soft);border-radius:7px;padding:5px 9px;display:inline-block}
    .tag.gray{color:var(--muted);background:#f1f4f8}.tag.warm{color:#a75a37;background:#fff1ea}
    .entry{display:flex;align-items:center;gap:13px;padding:13px 0;border-bottom:1px solid #edf1f6}
    .entry:last-child{border-bottom:0}.entry-cover{width:55px;height:68px;border-radius:9px;background:linear-gradient(145deg,#dce9ff,#abc4f1);display:grid;place-items:center;color:#2f5aa7;font-weight:800;font-size:13px}
    .entry-info{min-width:0;flex:1}.entry-info h3{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.entry-info p{margin:3px 0;color:var(--muted);font-size:12px}
    .section{padding:76px 0}.section-head{max-width:650px;margin-bottom:34px}.section-head p{color:var(--muted);margin:0}
    .benefit-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:16px}
    .benefit{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;min-height:205px;box-shadow:var(--shadow-sm);transition:.25s}
    .benefit:hover,.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .benefit:first-child{background:var(--blue-dark);color:#fff;border-color:var(--blue-dark)}
    .benefit:first-child p{color:#cbdafa}.num{font-size:13px;color:var(--blue);font-weight:800;margin-bottom:28px}.benefit:first-child .num{color:#a9c6ff}.benefit p{color:var(--muted);font-size:14px;margin:0}
    .demo-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:24px;align-items:stretch}.demo-copy{padding:30px 0}
    .step-list{margin-top:28px}.step{display:flex;gap:15px;margin:18px 0}.step-no{width:30px;height:30px;border-radius:50%;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800;flex:none}
    .step p{font-size:14px;color:var(--muted);margin:3px 0 0}
    .mock-filter{background:#f8fbff;border:1px solid #dce8f7;border-radius:20px;padding:22px}
    .mock-search{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;color:#9aa7bb;margin:15px 0}
    .progress-line{height:7px;background:#e3ebf7;border-radius:10px;overflow:hidden;margin:10px 0 24px}.progress-line span{display:block;width:72%;height:100%;background:var(--blue);border-radius:10px}
    .data-strip{background:#eaf2ff;border:1px solid #d5e4fb;border-radius:20px;padding:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .data-item{border-right:1px solid #d1def0;padding-right:15px}.data-item:last-child{border:0}.data-item strong{font-size:27px;color:var(--blue-dark);display:block}.data-item span{font-size:13px;color:var(--muted)}
    .content-layout{display:grid;grid-template-columns:1.5fr .8fr;gap:22px}.content-card,.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.content-card{padding:20px;display:flex;gap:18px;margin-bottom:14px;transition:.25s}.cover{width:120px;height:105px;border-radius:12px;background:linear-gradient(135deg,#e9f2ff,#cbdcf8);display:grid;place-items:center;color:var(--blue-dark);font-weight:800;flex:none}.content-card p{font-size:13px;color:var(--muted);margin:8px 0}.side-card{padding:23px;height:max-content}.side-card ul{list-style:none;padding:0;margin:15px 0 0}.side-card li{padding:11px 0;border-bottom:1px solid #edf1f6;font-size:14px}.side-card li:last-child{border:0}.side-card li span{display:block;color:var(--muted);font-size:12px}
    .form-box{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow-sm)}.form-control,.form-select{border:1px solid #d6e0ed;border-radius:10px;padding:12px 14px;color:var(--ink)}.form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(53,104,200,.12)}
    .privacy{background:#fff8f2;border:1px solid #f3dfd1;border-radius:18px;padding:24px}.privacy p{color:#7e6d65;font-size:14px;margin:0}
    .faq .accordion-item{border:1px solid var(--line)!important;border-radius:12px!important;margin-bottom:10px;overflow:hidden;background:#fff}.accordion-button{font-weight:700;color:var(--ink);background:#fff;box-shadow:none!important}.accordion-button:not(.collapsed){background:var(--blue-soft);color:var(--blue-dark)}.accordion-body{color:var(--muted);font-size:14px}
    .final-cta{padding:60px 0 150px}.cta-box{background:var(--blue-dark);color:#fff;border-radius:24px;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:25px}.cta-box p{color:#cbdafa;margin:8px 0 0}.cta-box .btn-light{background:#fff;border-color:#fff}
    footer{background:#eef3fa;padding:42px 0 95px;color:var(--muted);font-size:13px}.footer-grid{display:flex;justify-content:space-between;gap:30px}.footer-brand{color:var(--blue-dark);font-weight:800;font-size:17px}.footer-links{display:flex;gap:20px;flex-wrap:wrap}.footer-links a:hover{color:var(--blue)}
    .fixed-cta{position:fixed;z-index:20;bottom:20px;left:50%;transform:translateX(-50%);width:min(680px,calc(100% - 32px));background:#fff;border:1px solid #cbd9ed;border-radius:16px;padding:11px 14px 11px 18px;box-shadow:0 15px 40px rgba(32,58,103,.18);display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:13px}.fixed-cta span{color:var(--muted)}
    .age-note{font-size:12px;color:var(--muted);margin-top:12px}
    :focus-visible{outline:3px solid rgba(53,104,200,.35);outline-offset:3px}
    @media(max-width:991px){.nav-links a{padding:8px 7px}.benefit-grid{grid-template-columns:1fr 1fr}.benefit:first-child{grid-column:span 2}.demo-wrap,.content-layout{grid-template-columns:1fr}.data-strip{grid-template-columns:repeat(2,1fr)}.data-item:nth-child(2){border:0}}
    @media(max-width:767px){.site-header{padding-top:12px}.dock{gap:9px;padding:9px 10px}.brand{font-size:14px}.brand-mark{width:26px;height:26px;margin-right:4px}.nav-links{overflow-x:auto;white-space:nowrap}.nav-links a{font-size:12px}.nav-cta{padding:9px 11px;font-size:12px}.hero{padding:58px 0 48px}h1{font-size:42px;letter-spacing:-1px}.hero-copy{font-size:15px}.section{padding:55px 0}.benefit-grid{grid-template-columns:1fr}.benefit:first-child{grid-column:auto}.data-strip{grid-template-columns:1fr 1fr;padding:20px}.data-item{border:0!important}.content-card{align-items:flex-start}.cover{width:90px;height:88px}.cta-box{display:block;padding:30px 24px}.cta-box .btn-light{margin-top:20px}.footer-grid{display:block}.footer-links{margin-top:20px}.fixed-cta{bottom:10px}}
    @media(max-width:520px){.dock{border-radius:14px}.nav-links{display:none}.nav-cta{margin-left:auto}.hero-actions .btn-main,.hero-actions .btn-light{width:100%}.preview-panel{padding:17px}.data-item strong{font-size:22px}.content-card{padding:14px;gap:12px}.entry-info h3{font-size:14px}}

/* roulang page: category1 */
:root{
      --blue:#3568c8;
      --blue-dark:#224b99;
      --blue-soft:#edf4ff;
      --ink:#1f2d46;
      --muted:#71809a;
      --line:#dfe7f2;
      --paper:#fff;
      --bg:#f7f9fc;
      --cyan:#39a9ae;
      --warm:#e58b63;
      --radius:18px;
      --shadow:0 16px 45px rgba(40,73,130,.10);
      --shadow-sm:0 8px 24px rgba(40,73,130,.08)
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input,select{font:inherit}
    .container{max-width:1160px}
    .site-header{padding:24px 16px 0;position:relative;z-index:10}
    .dock{max-width:1100px;margin:auto;padding:9px 12px 9px 14px;background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:17px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:18px}
    .brand{font-weight:800;font-size:18px;letter-spacing:-.5px;white-space:nowrap;color:var(--blue-dark)}
    .brand-mark{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;background:var(--blue);color:#fff;border-radius:9px;margin-right:8px;font-size:14px}
    .nav-links{display:flex;gap:5px;align-items:center;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:10px;color:var(--muted);font-size:14px;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{background:var(--blue-soft);color:var(--blue-dark)}
    .nav-cta,.btn-main{background:var(--blue);color:#fff;border:0;border-radius:11px;padding:11px 18px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:7px}
    .nav-cta:hover,.btn-main:hover{background:var(--blue-dark);color:#fff;box-shadow:0 8px 18px rgba(53,104,200,.22);transform:translateY(-1px)}
    .page-head{padding:62px 0 38px;position:relative;overflow:hidden}
    .page-head:after{content:"";position:absolute;width:420px;height:420px;border:1px solid #e1ebfa;border-radius:50%;right:-145px;top:-120px;pointer-events:none}
    .eyebrow,.section-kicker{font-size:12px;letter-spacing:1.8px;color:var(--blue);font-weight:800}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-1.8px;font-weight:800;margin:12px 0 18px}
    h2{font-size:clamp(25px,3vw,36px);line-height:1.3;font-weight:800;letter-spacing:-.8px}
    h3{font-size:18px;font-weight:800}
    .lead-copy{max-width:700px;color:var(--muted);font-size:17px}
    .crumbs{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:22px}
    .crumbs a:hover{color:var(--blue)}
    .topic-banner{background:#eaf2ff;border:1px solid #d5e4fb;border-radius:20px;padding:23px 27px;display:flex;justify-content:space-between;align-items:center;gap:25px;margin-top:28px}
    .topic-banner strong{font-size:22px;color:var(--blue-dark);display:block}
    .topic-banner span{font-size:13px;color:var(--muted)}
    .section{padding:55px 0}
    .section-head{max-width:680px;margin-bottom:28px}
    .section-head p{color:var(--muted);margin:8px 0 0}
    .browse-layout{display:grid;grid-template-columns:280px 1fr;gap:24px;align-items:start}
    .side-card,.form-box,.content-card,.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .side-card{padding:23px;position:sticky;top:20px}
    .side-card h3{margin:0 0 18px}
    .form-label{font-size:13px;font-weight:700;color:var(--ink);margin-bottom:7px}
    .form-control,.form-select{border:1px solid #d6e0ed;border-radius:10px;padding:11px 13px;color:var(--ink);background:#fff}
    .form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(53,104,200,.12)}
    .filter-row{display:flex;gap:8px;flex-wrap:wrap}
    .tag{font-size:12px;color:var(--blue-dark);background:var(--blue-soft);border-radius:7px;padding:5px 9px;display:inline-block}
    .tag.gray{color:var(--muted);background:#f1f4f8}
    .tag.warm{color:#a75a37;background:#fff1ea}
    .filter-tag{border:0;cursor:pointer}
    .filter-tag:hover,.filter-tag.selected{background:var(--blue);color:#fff}
    .filter-note{border-top:1px solid #edf1f6;margin-top:20px;padding-top:16px;color:var(--muted);font-size:12px}
    .results-top{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:15px}
    .results-top p{margin:0;color:var(--muted);font-size:13px}
    .sort-select{width:150px;padding:8px 11px;font-size:13px}
    .content-card{padding:20px;display:flex;gap:18px;margin-bottom:14px;transition:.25s}
    .content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .cover{width:148px;min-width:148px;height:104px;border-radius:13px;background:linear-gradient(135deg,#e7f0ff,#f6eefa);border:1px solid #d9e5f5;display:flex;align-items:flex-end;padding:12px;position:relative;overflow:hidden}
    .cover:before{content:"";position:absolute;width:110px;height:110px;border:1px solid rgba(53,104,200,.22);border-radius:50%;right:-35px;top:-35px}
    .cover-number{font-size:27px;font-weight:800;color:var(--blue-dark);position:relative}
    .card-meta{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin:7px 0}
    .content-card p{font-size:13px;color:var(--muted);margin:7px 0}
    .card-action{margin-left:auto;align-self:center;white-space:nowrap}
    .empty-state{background:#fbfcfe;border:1px dashed #cbd8e8;border-radius:15px;padding:22px;text-align:center;color:var(--muted);font-size:13px}
    .info-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}
    .info-card{padding:27px}
    .info-card p{color:var(--muted);font-size:14px}
    .check-list{list-style:none;padding:0;margin:18px 0 0}
    .check-list li{padding:12px 0;border-bottom:1px solid #edf1f6;font-size:14px}
    .check-list li:last-child{border:0}
    .check-list b{color:var(--blue);margin-right:8px}
    .data-strip{background:#eaf2ff;border:1px solid #d5e4fb;border-radius:20px;padding:25px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .data-item{border-right:1px solid #d1def0;padding-right:15px}
    .data-item:last-child{border:0}
    .data-item strong{font-size:25px;color:var(--blue-dark);display:block}
    .data-item span{font-size:13px;color:var(--muted)}
    .faq .accordion-item{border:1px solid var(--line)!important;border-radius:12px!important;margin-bottom:10px;overflow:hidden;background:#fff}
    .accordion-button{font-weight:700;color:var(--ink);background:#fff;box-shadow:none!important}
    .accordion-button:not(.collapsed){background:var(--blue-soft);color:var(--blue-dark)}
    .accordion-body{color:var(--muted);font-size:14px}
    .final-cta{padding:35px 0 145px}
    .cta-box{background:var(--blue-dark);color:#fff;border-radius:24px;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta-box p{color:#cbdafa;margin:8px 0 0}
    .cta-box .btn-light{background:#fff;border-color:#fff}
    .btn-light{border:1px solid #cddbee;background:#fff;color:var(--blue-dark);border-radius:11px;padding:10px 17px;font-weight:700}
    .btn-light:hover{border-color:var(--blue);background:var(--blue-soft)}
    .fixed-cta{position:fixed;z-index:20;bottom:20px;left:50%;transform:translateX(-50%);width:min(680px,calc(100% - 32px));background:#fff;border:1px solid #cbd9ed;border-radius:16px;padding:11px 14px 11px 18px;box-shadow:0 15px 40px rgba(32,58,103,.18);display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:13px}
    .fixed-cta span{color:var(--muted)}
    footer{background:#eef3fa;padding:42px 0 95px;color:var(--muted);font-size:13px}
    .footer-grid{display:flex;justify-content:space-between;gap:30px}
    .footer-brand{color:var(--blue-dark);font-weight:800;font-size:17px}
    .footer-links{display:flex;gap:20px;flex-wrap:wrap}
    .footer-links a:hover{color:var(--blue)}
    .age-note{color:#a75a37;background:#fff1ea;border:1px solid #f3d3c4;border-radius:10px;padding:12px 14px;font-size:13px}
    .modal-content{border:0;border-radius:20px;box-shadow:var(--shadow);overflow:hidden}
    .modal-header{background:var(--blue-soft);border:0}
    @media(max-width:991px){
      .dock{gap:10px}
      .nav-links{overflow-x:auto;white-space:nowrap}
      .browse-layout{grid-template-columns:1fr}
      .side-card{position:static}
      .info-grid{grid-template-columns:1fr}
    }
    @media(max-width:767px){
      .site-header{padding-top:12px}
      .dock{padding:8px 9px}
      .brand{font-size:14px}
      .brand-mark{width:26px;height:26px;margin-right:4px}
      .nav-links{display:none}
      .nav-cta{margin-left:auto;padding:9px 11px;font-size:12px}
      .page-head{padding:48px 0 28px}
      h1{font-size:35px}
      .lead-copy{font-size:15px}
      .topic-banner{display:block;padding:20px}
      .topic-banner .btn-main{margin-top:15px;width:100%}
      .results-top{align-items:flex-start;flex-direction:column}
      .sort-select{width:100%}
      .content-card{display:block}
      .cover{width:100%;height:130px;margin-bottom:15px}
      .card-action{display:block;margin-top:15px;width:100%}
      .card-action .btn-light{width:100%}
      .data-strip{grid-template-columns:1fr;padding:20px}
      .data-item{border:0}
      .cta-box{display:block;padding:30px 24px}
      .cta-box .btn-light{margin-top:20px;width:100%}
      .footer-grid{display:block}
      .footer-links{margin-top:20px}
      .fixed-cta{bottom:10px}
    }
    @media(max-width:520px){
      .crumbs{font-size:12px}
      .section{padding:42px 0}
      .fixed-cta{font-size:12px;padding-left:13px}
      .fixed-cta .btn-main{padding:9px 12px}
    }