/* roulang page: index */
:root{
      --blue:#2457d6;
      --blue-dark:#173b9c;
      --blue-soft:#edf3ff;
      --ink:#14213d;
      --muted:#68758e;
      --line:#dfe7f4;
      --bg:#f6f8fc;
      --warm:#c77738;
      --teal:#3c8d89;
      --radius:20px;
      --shadow:0 14px 35px rgba(30,61,117,.08);
      --shadow-hover:0 18px 42px rgba(30,61,117,.14);
    }
    *{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{text-decoration:none;color:inherit}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 3px 16px rgba(33,61,111,.04)}
    .nav-row{min-height:72px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:36px;height:36px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 7px 16px rgba(36,87,214,.25)}
    .brand-name{font-size:16px}
    .main-nav{display:flex;align-items:center;gap:6px;flex:1}
    .nav-link{padding:9px 13px;border-radius:10px;color:#5e6c84;font-size:14px;transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--blue);background:var(--blue-soft)}
    .nav-link.active{font-weight:700;position:relative}
    .nav-link.active:after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--blue);border-radius:3px}
    .nav-tools{display:flex;align-items:center;gap:10px}
    .search-mini{display:flex;align-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;padding:4px 5px 4px 12px;transition:.2s}
    .search-mini:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px rgba(36,87,214,.11)}
    .search-mini input{width:120px;border:0;outline:0;color:var(--ink);font-size:13px}
    .search-mini button{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:5px 10px;font-size:12px}
    .menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px;color:var(--blue)}
    .hero{padding:76px 0 58px;background:#fff;border-bottom:1px solid var(--line)}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--blue)}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-.055em;margin:18px 0 20px;font-weight:850}
    .hero-copy{max-width:650px;color:var(--muted);font-size:17px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 28px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 18px;border-radius:12px;font-size:14px;font-weight:750;transition:.2s;border:1px solid transparent}
    .btn:focus-visible,.nav-link:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(36,87,214,.28);outline-offset:3px}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(36,87,214,.2)}
    .btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 22px rgba(36,87,214,.26)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--blue)}
    .btn-secondary:hover{background:var(--blue-soft);border-color:#bfd0f7}
    .age-note{display:flex;gap:10px;align-items:flex-start;color:#78849a;font-size:12px;max-width:560px}
    .age-note strong{color:var(--ink)}
    .hero-panel{position:relative;background:#f2f6ff;border:1px solid #d9e4fa;border-radius:26px;padding:25px;box-shadow:var(--shadow);overflow:hidden}
    .hero-panel:before{content:"";position:absolute;width:210px;height:210px;border:1px solid #c9d9f7;border-radius:50%;right:-70px;top:-65px}
    .panel-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #d7e2f7;padding-bottom:15px;margin-bottom:19px}
    .panel-title{font-weight:800;font-size:16px}
    .status{font-size:11px;color:#347b75;background:#e5f5f1;padding:5px 9px;border-radius:20px}
    .index-list{display:grid;gap:11px}
    .index-item{display:flex;gap:14px;align-items:center;padding:13px;border-radius:14px;background:#fff;border:1px solid transparent;transition:.2s}
    .index-item:hover{border-color:#b9cbf1;box-shadow:0 8px 18px rgba(34,72,140,.08);transform:translateX(3px)}
    .index-num{font-size:12px;color:var(--blue);font-weight:800;width:24px}
    .index-item b{display:block;font-size:14px}
    .index-item span{display:block;font-size:12px;color:var(--muted)}
    .section{padding:84px 0}
    .section.alt{background:#eef3fb}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .section-kicker{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.12em}
    h2{font-size:clamp(27px,3.5vw,39px);line-height:1.25;letter-spacing:-.04em;margin:8px 0 0}
    .section-desc{max-width:550px;color:var(--muted);font-size:14px;margin:0}
    .feature-layout{display:grid;grid-template-columns:220px 1fr;gap:22px}
    .side-index{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:17px;height:max-content}
    .side-index p{font-size:12px;color:var(--muted);margin:0 0 12px}
    .side-index a{display:block;padding:10px 12px;border-radius:9px;color:#62708a;font-size:13px;margin:3px 0}
    .side-index a:hover,.side-index a.active{background:var(--blue-soft);color:var(--blue);font-weight:700}
    .feature-content{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.22s}
    .card:hover{border-color:#b9caf0;box-shadow:var(--shadow-hover);transform:translateY(-3px)}
    .card-wide{grid-column:span 2;display:flex;justify-content:space-between;gap:25px;align-items:center}
    .card-icon{width:39px;height:39px;border-radius:12px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-weight:900;margin-bottom:17px}
    .card h3{margin:0 0 7px;font-size:18px}
    .card p{font-size:13px;color:var(--muted);margin:0 0 16px}
    .text-link{color:var(--blue);font-size:13px;font-weight:750}
    .text-link:hover{color:var(--blue-dark)}
    .tag{display:inline-flex;padding:4px 9px;border-radius:7px;background:#f5eee8;color:#9a5b2e;font-size:11px;margin-right:5px}
    .tag.blue{background:var(--blue-soft);color:var(--blue)}
    .scenario-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .scenario{display:flex;gap:20px;align-items:flex-start;padding:22px 0;border-top:1px solid #d6e0ef}
    .scenario-no{font-size:25px;line-height:1;color:var(--blue);font-weight:850}
    .scenario h3{font-size:17px;margin:0 0 5px}
    .scenario p{font-size:13px;color:var(--muted);margin:0}
    .showcase{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .highlight{background:var(--ink);color:#fff;border-radius:24px;padding:31px;min-height:280px;position:relative;overflow:hidden}
    .highlight:after{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(151,184,255,.3);border-radius:50%;right:-90px;bottom:-120px}
    .highlight p{color:#bdc9de;font-size:14px;max-width:450px}
    .metric-row{display:flex;gap:34px;margin-top:30px}
    .metric strong{display:block;font-size:30px;color:#fff}
    .metric span{font-size:12px;color:#aebbd3}
    .trend-list{background:#fff;border:1px solid var(--line);border-radius:24px;padding:10px 22px}
    .trend{display:flex;align-items:center;gap:15px;padding:17px 0;border-bottom:1px solid #edf0f6}
    .trend:last-child{border:0}
    .trend-num{font-size:13px;font-weight:800;color:var(--blue);width:23px}
    .trend b{font-size:14px;display:block}
    .trend span{font-size:12px;color:var(--muted)}
    .plan-table{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}
    .plan-row{display:grid;grid-template-columns:1.25fr repeat(3,1fr);border-bottom:1px solid #e8edf5}
    .plan-row:last-child{border:0}
    .plan-row>div{padding:17px 20px;font-size:13px;border-right:1px solid #edf0f6}
    .plan-row>div:last-child{border:0}
    .plan-head{background:#f5f8fd;font-weight:800}
    .recommended{background:#edf3ff;color:var(--blue)}
    .check{color:#34877c;font-weight:800}
    .faq-wrap{max-width:850px;margin:0 auto}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:10px;overflow:hidden}
    .faq-question{width:100%;border:0;background:transparent;text-align:left;padding:19px 22px;display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:750}
    .faq-question span:last-child{color:var(--blue);font-size:20px;transition:.2s}
    .faq-answer{display:none;padding:0 22px 19px;color:var(--muted);font-size:13px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{padding:70px 0;background:var(--blue)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff}
    .cta h2{margin:0;font-size:34px}
    .cta p{color:#dbe5ff;max-width:610px;margin:10px 0 0;font-size:14px}
    .cta .btn-secondary{border-color:#d8e3ff}
    .site-footer{background:#fff;border-top:1px solid var(--line);padding:45px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
    .footer-title{font-size:13px;font-weight:800;margin-bottom:13px}
    .footer-link{display:block;color:var(--muted);font-size:13px;margin:7px 0}
    .footer-link:hover{color:var(--blue)}
    .footer-note{color:var(--muted);font-size:12px;max-width:380px}
    .copyright{border-top:1px solid #edf0f5;margin-top:30px;padding-top:18px;color:#8a95a8;font-size:11px;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){.hero-grid{gap:35px}.container{width:min(100% - 32px,920px)}}
    @media(max-width:768px){
      .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;padding:10px 20px 18px;border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(30,61,117,.08);flex-direction:column;align-items:stretch}
      .main-nav.show{display:flex}.nav-link{padding:12px}.nav-tools{margin-left:auto}.search-mini input{width:90px}.menu-button{display:block}
      .hero{padding:53px 0 45px}.hero-grid,.showcase,.scenario-grid{grid-template-columns:1fr}.hero-panel{margin-top:5px}.section{padding:62px 0}.section-head{display:block}.section-desc{margin-top:13px}
      .feature-layout{grid-template-columns:1fr}.side-index{display:flex;gap:6px;overflow-x:auto;white-space:nowrap}.side-index p{display:none}.side-index a{display:inline-block}
      .feature-content{grid-template-columns:1fr}.card-wide{grid-column:auto;display:block}.plan-table{overflow-x:auto}.plan-row{min-width:700px}.cta-box{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 28px)}.brand-name{font-size:14px}.brand-mark{width:32px;height:32px}.search-mini{display:none}h1{font-size:35px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}.metric-row{gap:20px}.metric strong{font-size:25px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:7px}
    }

/* roulang page: category1 */
:root{
      --blue:#2457d6;--blue-dark:#173b9c;--blue-soft:#edf3ff;--ink:#14213d;
      --muted:#68758e;--line:#dfe7f4;--bg:#f6f8fc;--warm:#c77738;
      --teal:#3c8d89;--radius:20px;--shadow:0 14px 35px rgba(30,61,117,.08);
      --shadow-hover:0 18px 42px rgba(30,61,117,.14)
    }
    *{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","Microsoft YaHei",sans-serif;line-height:1.75}
    a{text-decoration:none;color:inherit} button,input{font:inherit} button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 3px 16px rgba(33,61,111,.04)}
    .nav-row{min-height:72px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:36px;height:36px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 7px 16px rgba(36,87,214,.25)}
    .brand-name{font-size:16px}.main-nav{display:flex;align-items:center;gap:6px;flex:1}
    .nav-link{padding:9px 13px;border-radius:10px;color:#5e6c84;font-size:14px;transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--blue);background:var(--blue-soft)}
    .nav-link.active{font-weight:700;position:relative}.nav-link.active:after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--blue);border-radius:3px}
    .nav-tools{display:flex;align-items:center;gap:10px}.search-mini{display:flex;align-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;padding:4px 5px 4px 12px;transition:.2s}
    .search-mini:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px rgba(36,87,214,.11)}
    .search-mini input{width:120px;border:0;outline:0;color:var(--ink);font-size:13px}.search-mini button{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:5px 10px;font-size:12px}
    .menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px;color:var(--blue)}
    .hero{padding:70px 0 48px;background:#fff;border-bottom:1px solid var(--line)}
    .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:62px;align-items:center}
    .eyebrow,.section-kicker{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";display:inline-block;width:24px;height:2px;background:var(--blue);vertical-align:middle;margin-right:8px}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:-.055em;margin:17px 0}
    h2{font-size:clamp(25px,3vw,36px);line-height:1.25;letter-spacing:-.04em;margin:8px 0}
    .hero-copy{max-width:650px;color:var(--muted);font-size:17px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 18px;border-radius:12px;font-size:14px;font-weight:750;transition:.2s;border:1px solid transparent}
    .btn:focus-visible,.nav-link:focus-visible,.faq-question:focus-visible,.filter-button:focus-visible{outline:3px solid rgba(36,87,214,.28);outline-offset:3px}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(36,87,214,.2)}.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--blue)}.btn-secondary:hover{background:var(--blue-soft);border-color:#bfd0f7}
    .profile-panel{background:#f2f6ff;border:1px solid #d9e4fa;border-radius:26px;padding:28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .profile-panel:after{content:"";position:absolute;width:190px;height:190px;border:1px solid #c9d9f7;border-radius:50%;right:-70px;top:-65px}
    .profile-top{display:flex;align-items:center;gap:15px;position:relative;z-index:1}.profile-avatar{width:62px;height:62px;border-radius:20px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:25px;font-weight:900}
    .profile-name{font-weight:850;font-size:18px}.profile-meta{font-size:12px;color:var(--muted)}
    .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin:25px 0 19px}.badge{padding:5px 10px;background:#fff;border:1px solid #d7e2f5;border-radius:8px;color:var(--blue);font-size:12px;font-weight:700}
    .profile-note{font-size:13px;color:var(--muted);border-top:1px solid #d9e4fa;padding-top:16px}
    .section{padding:78px 0}.section.alt{background:#eef3fb}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.section-desc{max-width:560px;color:var(--muted);font-size:14px;margin:0}
    .directory{display:grid;grid-template-columns:230px 1fr;gap:24px}.side-index{background:#fff;border:1px solid var(--line);border-radius:18px;padding:13px;height:max-content}
    .side-index strong{display:block;padding:12px;color:var(--ink);font-size:14px}.side-index a{display:block;padding:10px 12px;border-radius:9px;color:#62708a;font-size:13px;margin:3px 0}.side-index a:hover,.side-index a.active{background:var(--blue-soft);color:var(--blue);font-weight:700}
    .filter-bar{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:15px}.filter-group{display:flex;gap:7px;flex-wrap:wrap}.filter-button{border:1px solid var(--line);background:#fff;color:var(--muted);padding:7px 12px;border-radius:9px;font-size:12px}.filter-button.active,.filter-button:hover{color:var(--blue);border-color:#b9caf0;background:var(--blue-soft)}
    .content-list{display:grid;gap:14px}.content-item{display:grid;grid-template-columns:112px 1fr auto;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px;box-shadow:var(--shadow);transition:.2s}.content-item:hover{border-color:#b9caf0;box-shadow:var(--shadow-hover);transform:translateY(-2px)}
    .cover{height:86px;border-radius:13px;background:linear-gradient(135deg,#dbe7ff,#f3e6db);display:grid;place-items:center;color:var(--blue);font-weight:900;font-size:24px}.cover.alt{background:linear-gradient(135deg,#e1f1ef,#e7e4f8);color:var(--teal)}.cover.warm{background:linear-gradient(135deg,#f8e9da,#e8effc);color:var(--warm)}
    .content-item h3{font-size:17px;margin:0 0 5px}.content-item p{font-size:13px;color:var(--muted);margin:0 0 8px}.meta{font-size:11px;color:#8a96a9}.tag{display:inline-flex;padding:3px 8px;border-radius:7px;background:#f5eee8;color:#9a5b2e;font-size:11px;margin-right:5px}.tag.blue{background:var(--blue-soft);color:var(--blue)}
    .trend-box{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}.trend-box h3{font-size:17px;margin:0 0 15px}.trend-list{display:grid;gap:0}.trend-row{display:flex;gap:13px;align-items:center;padding:13px 0;border-bottom:1px solid #edf0f6}.trend-row:last-child{border-bottom:0}.trend-number{color:var(--blue);font-weight:850;font-size:18px;width:22px}.trend-row p{margin:0;font-size:13px}.trend-row small{color:var(--muted);display:block}
    .notice{display:flex;align-items:flex-start;gap:13px;padding:18px 20px;background:#fffaf4;border:1px solid #f0dfca;border-radius:16px;color:#765634;font-size:13px}.notice strong{color:#9a5b2e;white-space:nowrap}
    .next-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.next-card{display:flex;justify-content:space-between;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px;box-shadow:var(--shadow);transition:.2s}.next-card:hover{box-shadow:var(--shadow-hover);border-color:#b9caf0}.next-card p{margin:4px 0 0;color:var(--muted);font-size:13px}.arrow{font-size:25px;color:var(--blue)}
    .faq-wrap{max-width:850px;margin:0 auto}.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:10px;overflow:hidden}.faq-question{width:100%;border:0;background:transparent;text-align:left;padding:18px 21px;display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:750}.faq-answer{display:none;padding:0 21px 18px;color:var(--muted);font-size:13px}.faq-item.open .faq-answer{display:block}.faq-item.open .plus{transform:rotate(45deg)}.plus{color:var(--blue);font-size:22px;transition:.2s}
    .site-footer{background:#14213d;color:#dce6fb;padding:52px 0 22px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:42px}.site-footer .brand-name{color:#fff}.footer-note{max-width:430px;color:#aab9d5;font-size:13px;margin:18px 0 0}.footer-title{font-weight:800;color:#fff;margin-bottom:12px}.footer-link{display:block;color:#aab9d5;font-size:13px;margin:8px 0}.footer-link:hover{color:#fff}.copyright{border-top:1px solid rgba(220,230,251,.16);margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#91a3c2;font-size:12px}
    @media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:35px}.directory{grid-template-columns:180px 1fr}.nav-row{gap:13px}}
    @media(max-width:720px){.container{width:min(100% - 28px,600px)}.main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:10px 14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.nav-link{padding:12px}.menu-button{display:block}.search-mini input{width:88px}.hero{padding:52px 0 35px}.section{padding:58px 0}.directory,.next-grid{grid-template-columns:1fr}.side-index{display:flex;overflow:auto;gap:4px;padding:8px}.side-index strong{display:none}.side-index a{white-space:nowrap}.filter-bar{align-items:flex-start;flex-direction:column}.content-item{grid-template-columns:76px 1fr}.content-item .btn{grid-column:2;justify-self:start}.cover{height:76px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid>div:first-child{grid-column:span 2}.copyright{flex-direction:column;gap:3px}}
    @media(max-width:420px){h1{font-size:34px}.brand-name{font-size:14px}.nav-tools{margin-left:auto}.search-mini{display:none}.content-item h3{font-size:15px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}}

/* roulang page: category2 */
:root{
 --blue:#2457d6;
 --blue-dark:#173b9c;
 --blue-soft:#edf3ff;
 --ink:#14213d;
 --muted:#68758e;
 --line:#dfe7f4;
 --bg:#f6f8fc;
 --warm:#c77738;
 --teal:#3c8d89;
 --violet:#7565b3;
 --radius:20px;
 --shadow:0 14px 35px rgba(30,61,117,.08);
 --shadow-hover:0 18px 42px rgba(30,61,117,.14);
}
*{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{text-decoration:none;color:inherit}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 3px 16px rgba(33,61,111,.04)}
.nav-row{min-height:72px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 7px 16px rgba(36,87,214,.25)}
.brand-name{font-size:16px}
.main-nav{display:flex;align-items:center;gap:6px;flex:1}
.nav-link{padding:9px 13px;border-radius:10px;color:#5e6c84;font-size:14px;transition:.2s}
.nav-link:hover,.nav-link.active{color:var(--blue);background:var(--blue-soft)}
.nav-link.active{font-weight:700;position:relative}
.nav-link.active:after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--blue);border-radius:3px}
.nav-tools{display:flex;align-items:center;gap:10px}
.search-mini{display:flex;align-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;padding:4px 5px 4px 12px;transition:.2s}
.search-mini:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px rgba(36,87,214,.11)}
.search-mini input{width:120px;border:0;outline:0;color:var(--ink);font-size:13px}
.search-mini button{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:5px 10px;font-size:12px}
.menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px;color:var(--blue)}
.hero{padding:72px 0 56px;background:#fff;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:62px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.12em}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--blue)}
h1{font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:-.055em;margin:17px 0 19px}
h2{font-size:clamp(25px,3vw,36px);line-height:1.25;letter-spacing:-.04em;margin:0 0 10px}
h3{line-height:1.35}
.hero-copy{max-width:650px;color:var(--muted);font-size:17px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:29px 0 25px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 18px;border-radius:12px;font-size:14px;font-weight:750;transition:.2s;border:1px solid transparent}
.btn:focus-visible,.nav-link:focus-visible,.faq-question:focus-visible,.filter-tab:focus-visible{outline:3px solid rgba(36,87,214,.28);outline-offset:3px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(36,87,214,.2)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 22px rgba(36,87,214,.26)}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--blue)}
.btn-secondary:hover{background:var(--blue-soft);border-color:#bfd0f7}
.notice{display:flex;gap:9px;align-items:flex-start;font-size:12px;color:var(--muted);max-width:610px}
.hero-panel{position:relative;background:#f2f6ff;border:1px solid #d9e4fa;border-radius:26px;padding:25px;box-shadow:var(--shadow);overflow:hidden}
.hero-panel:before{content:"";position:absolute;width:210px;height:210px;border:1px solid #c9d9f7;border-radius:50%;right:-70px;top:-65px}
.panel-title{font-weight:800;font-size:16px;position:relative}
.panel-subtitle{font-size:12px;color:var(--muted);margin:3px 0 18px;position:relative}
.index-list{display:grid;gap:11px;position:relative}
.index-item{display:flex;gap:14px;align-items:center;padding:13px;border-radius:14px;background:#fff;border:1px solid transparent;transition:.2s}
.index-item:hover{border-color:#b9cbf1;box-shadow:0 8px 18px rgba(34,72,140,.08);transform:translateX(3px)}
.index-no{width:30px;height:30px;border-radius:9px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-size:12px;font-weight:800}
.index-item b{display:block;font-size:14px}
.index-item span{display:block;font-size:12px;color:var(--muted)}
.section{padding:78px 0}
.section.alt{background:#eef3fb}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
.section-kicker{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.12em;margin-bottom:8px}
.section-desc{max-width:560px;color:var(--muted);font-size:14px;margin:0}
.info-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.info-cell{padding:21px 24px;border-right:1px solid var(--line)}
.info-cell:last-child{border:0}
.info-cell strong{display:block;font-size:20px;color:var(--blue);margin-bottom:3px}
.info-cell span{font-size:12px;color:var(--muted)}
.featured{display:grid;grid-template-columns:1.08fr .92fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}
.feature-visual{min-height:340px;background:#dce8ff;position:relative;padding:28px;display:flex;align-items:flex-end;overflow:hidden}
.feature-visual:before,.feature-visual:after{content:"";position:absolute;border:1px solid rgba(36,87,214,.25);border-radius:50%}
.feature-visual:before{width:330px;height:330px;right:-70px;top:-70px}
.feature-visual:after{width:180px;height:180px;left:-50px;bottom:-70px}
.visual-label{position:absolute;top:27px;left:28px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.13em}
.visual-title{position:relative;font-size:clamp(28px,4vw,46px);font-weight:850;line-height:1.15;letter-spacing:-.05em;max-width:360px}
.feature-copy{padding:35px}
.feature-copy h3{font-size:27px;letter-spacing:-.04em;margin:0 0 12px}
.feature-copy p{color:var(--muted);font-size:14px;margin:0 0 22px}
.tag{display:inline-flex;padding:4px 9px;border-radius:7px;background:#f5eee8;color:#9a5b2e;font-size:11px;margin:0 5px 8px 0}
.tag.blue{background:var(--blue-soft);color:var(--blue)}
.tag.teal{background:#e8f5f3;color:#287772}
.filter-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.filter-tab{border:1px solid var(--line);background:#fff;color:var(--muted);padding:8px 14px;border-radius:9px;font-size:13px;transition:.2s}
.filter-tab:hover,.filter-tab.active{color:var(--blue);background:var(--blue-soft);border-color:#bfd0f7;font-weight:700}
.topic-grid{display:grid;grid-template-columns:1.25fr .85fr 1fr;grid-auto-rows:minmax(190px,auto);gap:18px}
.topic-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:23px;box-shadow:var(--shadow);transition:.22s;display:flex;flex-direction:column;justify-content:space-between}
.topic-card:hover{border-color:#b9caf0;box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.topic-card.large{grid-row:span 2;background:#f8faff}
.topic-card.wide{grid-column:span 2}
.topic-mark{height:58px;width:100%;border-radius:13px;background:linear-gradient(135deg,#edf3ff,#f8f1eb);margin-bottom:19px;position:relative;overflow:hidden}
.topic-mark:after{content:"";position:absolute;right:16px;top:12px;width:88px;height:88px;border:1px solid rgba(36,87,214,.24);border-radius:50%}
.topic-card h3{font-size:19px;margin:0 0 7px}
.topic-card p{font-size:13px;color:var(--muted);margin:0 0 16px}
.card-footer{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:12px;color:var(--muted)}
.text-link{color:var(--blue);font-size:13px;font-weight:750}
.text-link:hover{color:var(--blue-dark)}
.trend-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:22px;align-items:stretch}
.trend-panel{background:var(--ink);color:#fff;border-radius:23px;padding:30px;position:relative;overflow:hidden}
.trend-panel:after{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:-55px;bottom:-75px}
.trend-panel p{color:#bdc8dc;font-size:14px;max-width:420px}
.trend-list{background:#fff;border:1px solid var(--line);border-radius:23px;padding:10px 22px}
.trend-row{display:flex;align-items:center;gap:15px;padding:17px 0;border-bottom:1px solid #edf0f6}
.trend-row:last-child{border:0}
.trend-number{font-size:20px;font-weight:850;color:#c3cee2;width:30px}
.trend-row strong{display:block;font-size:14px}
.trend-row span{display:block;color:var(--muted);font-size:12px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.related-card{display:flex;justify-content:space-between;align-items:center;gap:20px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;transition:.2s}
.related-card:hover{border-color:#b9caf0;box-shadow:var(--shadow);transform:translateY(-2px)}
.related-card h3{font-size:16px;margin:0 0 4px}
.related-card p{font-size:12px;color:var(--muted);margin:0}
.arrow{color:var(--blue);font-size:22px}
.faq-wrap{max-width:850px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:10px;overflow:hidden}
.faq-question{width:100%;border:0;background:transparent;text-align:left;padding:19px 22px;display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:750}
.faq-question span:last-child{color:var(--blue);font-size:20px;transition:.2s}
.faq-answer{display:none;padding:0 22px 19px;color:var(--muted);font-size:13px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta{padding:64px 0;background:#eaf1ff}
.cta-box{display:flex;justify-content:space-between;align-items:center;gap:30px;background:#fff;border:1px solid #d3e0f7;border-radius:24px;padding:34px 38px;box-shadow:var(--shadow)}
.cta-box h2{margin-bottom:7px}
.cta-box p{margin:0;color:var(--muted);font-size:14px}
.site-footer{background:#fff;border-top:1px solid var(--line);padding:52px 0 25px}
.footer-grid{display:grid;grid-template-columns:1.6fr .7fr .9fr;gap:45px}
.footer-note{font-size:13px;color:var(--muted);max-width:430px;margin:17px 0 0}
.footer-title{font-weight:800;font-size:14px;margin-bottom:12px}
.footer-link{display:block;color:var(--muted);font-size:13px;margin:7px 0;transition:.2s}
.footer-link:hover{color:var(--blue)}
.copyright{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:38px;padding-top:18px;color:#8a96aa;font-size:12px}
@media(max-width:1024px){.hero-grid{gap:35px}.topic-grid{grid-template-columns:1fr 1fr}.topic-card.large{grid-row:auto}.topic-card.wide{grid-column:span 1}}
@media(max-width:768px){.container{width:min(100% - 30px,620px)}.nav-row{min-height:64px;gap:12px}.brand-name{font-size:14px}.main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 15px;box-shadow:0 12px 22px rgba(33,61,111,.08);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.nav-link{padding:12px}.search-mini input{width:90px}.menu-button{display:block}.hero{padding:52px 0 42px}.hero-grid,.featured,.trend-layout{grid-template-columns:1fr}.hero-panel{margin-top:8px}.section{padding:60px 0}.section-head{display:block}.section-desc{margin-top:12px}.info-strip{grid-template-columns:1fr 1fr}.info-cell:nth-child(2){border-right:0}.info-cell:nth-child(-n+2){border-bottom:1px solid var(--line)}.feature-visual{min-height:260px}.topic-grid{grid-template-columns:1fr}.topic-card.wide{grid-column:auto}.related-grid{grid-template-columns:1fr}.cta-box{display:block;padding:28px}.cta-box .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:span 2}.copyright{display:block}.copyright span{display:block;margin-top:5px}}
@media(max-width:520px){.container{width:calc(100% - 28px)}h1{font-size:35px}.hero-copy{font-size:15px}.nav-tools{margin-left:auto}.search-mini{display:none}.info-cell{padding:17px 15px}.info-cell strong{font-size:18px}.feature-copy{padding:26px 22px}.visual-title{font-size:32px}.filter-bar{flex-wrap:nowrap;overflow-x:auto;padding-bottom:5px}.filter-tab{white-space:nowrap}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.section-head{margin-bottom:23px}}