/* roulang page: index */
:root{
      --primary:#2563EB;
      --primary-2:#38BDF8;
      --primary-soft:#EAF4FF;
      --teal:#14B8A6;
      --amber:#F59E0B;
      --bg:#F7FAFC;
      --bg-2:#F8FBFF;
      --text:#1E293B;
      --muted:#64748B;
      --line:#E2E8F0;
      --card:#FFFFFF;
      --radius:22px;
      --radius-sm:14px;
      --shadow:0 16px 40px rgba(15,23,42,.06);
      --shadow-hover:0 24px 54px rgba(15,23,42,.10);
      --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 9% 5%, rgba(56,189,248,.18), transparent 30%),
        radial-gradient(circle at 88% 12%, rgba(20,184,166,.12), transparent 28%),
        linear-gradient(180deg,#F8FBFF 0%,#F7FAFC 45%,#FFFFFF 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    img,svg{max-width:100%;display:block}
    ::selection{background:rgba(37,99,235,.18)}
    .site-container{width:min(1240px,100%);margin-inline:auto;padding-inline:28px}
    .age-strip{
      background:linear-gradient(90deg,rgba(245,158,11,.15),rgba(255,251,235,.86));
      border-bottom:1px solid rgba(245,158,11,.24);
      color:#92400E;
      font-size:14px;
    }
    .main-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.94);
      backdrop-filter:blur(14px);
      border-bottom:1px solid rgba(226,232,240,.9);
      box-shadow:0 8px 24px rgba(15,23,42,.035);
    }
    .brand-icon{
      width:44px;height:44px;border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 12px 24px rgba(37,99,235,.18);
      position:relative;flex:0 0 auto;
    }
    .brand-icon:before{
      content:"";
      position:absolute;inset:9px;
      border:2px solid rgba(255,255,255,.75);
      border-radius:50%;
    }
    .brand-icon:after{
      content:"";
      position:absolute;left:18px;top:14px;
      border-left:12px solid white;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      filter:drop-shadow(0 2px 3px rgba(0,0,0,.12));
    }
    .search-box{
      border:1px solid var(--line);
      background:#F8FBFF;
      border-radius:999px;
      transition:.2s ease;
    }
    .search-box:focus-within{
      border-color:rgba(37,99,235,.48);
      box-shadow:0 0 0 4px rgba(37,99,235,.10);
      background:white;
    }
    .nav-tab{
      display:inline-flex;align-items:center;gap:8px;
      min-height:40px;padding:8px 16px;border-radius:999px;
      color:#475569;font-weight:650;font-size:14px;
      white-space:nowrap;transition:.2s ease;
      border:1px solid transparent;
    }
    .nav-tab:hover{background:#EFF6FF;color:var(--primary);border-color:#DBEAFE}
    .nav-tab.active{background:var(--primary-soft);color:var(--primary);border-color:#BFDBFE}
    .tabs-row{overflow-x:auto;scrollbar-width:none}
    .tabs-row::-webkit-scrollbar{display:none}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:12px 18px;border-radius:14px;
      font-weight:750;transition:.22s ease;border:1px solid transparent;
      cursor:pointer;
    }
    .btn-primary{background:var(--primary);color:white;box-shadow:0 14px 28px rgba(37,99,235,.20)}
    .btn-primary:hover{background:#1D4ED8;transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.26)}
    .btn-secondary{background:white;color:var(--primary);border-color:#BFDBFE}
    .btn-secondary:hover{background:#EFF6FF;transform:translateY(-2px)}
    .btn-warning{background:#FFFBEB;color:#92400E;border-color:#FDE68A}
    .btn-warning:hover{border-color:#F59E0B;background:#FEF3C7}
    .btn:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{
      outline:none;box-shadow:0 0 0 4px rgba(37,99,235,.16);
    }
    .section{padding-block:86px}
    .section-tight{padding-block:58px}
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:#EFF6FF;color:#1D4ED8;border:1px solid #BFDBFE;
      font-weight:700;font-size:13px;
    }
    .badge-teal{background:#ECFDF5;color:#0F766E;border-color:#99F6E4}
    .badge-amber{background:#FFFBEB;color:#92400E;border-color:#FDE68A}
    .card{
      background:var(--card);
      border:1px solid rgba(226,232,240,.92);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      transition:.25s ease;
    }
    .card-hover:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BFDBFE}
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);
      gap:34px;align-items:center;
    }
    .hero-title{
      font-size:clamp(32px,4.5vw,54px);
      line-height:1.18;
      letter-spacing:-.04em;
      font-weight:850;
    }
    .text-gradient{
      background:linear-gradient(90deg,#1E293B 0%,#2563EB 54%,#0F766E 100%);
      -webkit-background-clip:text;background-clip:text;color:transparent;
    }
    .dashboard-card{
      position:relative;overflow:hidden;
      background:
        radial-gradient(circle at 15% 10%,rgba(56,189,248,.24),transparent 28%),
        linear-gradient(180deg,#FFFFFF 0%,#F8FBFF 100%);
    }
    .dashboard-card:before{
      content:"";
      position:absolute;inset:0;
      background-image:linear-gradient(rgba(37,99,235,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.06) 1px,transparent 1px);
      background-size:26px 26px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 78%);
      pointer-events:none;
    }
    .progress{height:9px;background:#E2E8F0;border-radius:999px;overflow:hidden}
    .progress span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-2))}
    .mini-line{
      height:36px;border-radius:12px;
      background:
        linear-gradient(135deg,transparent 0 18%,rgba(37,99,235,.16) 18% 20%,transparent 20% 38%,rgba(20,184,166,.18) 38% 41%,transparent 41% 62%,rgba(37,99,235,.18) 62% 65%,transparent 65%),
        linear-gradient(180deg,#F8FBFF,#EFF6FF);
    }
    .cover{
      min-height:168px;border-radius:18px;overflow:hidden;position:relative;
      background:
        linear-gradient(135deg,rgba(37,99,235,.88),rgba(56,189,248,.42)),
        repeating-linear-gradient(45deg,rgba(255,255,255,.18) 0 12px,rgba(255,255,255,.06) 12px 24px);
    }
    .cover:before{
      content:"";
      position:absolute;width:76px;height:76px;border-radius:24px;
      left:50%;top:50%;transform:translate(-50%,-50%);
      background:rgba(255,255,255,.86);
      box-shadow:0 20px 40px rgba(15,23,42,.16);
    }
    .cover:after{
      content:"";
      position:absolute;left:50%;top:50%;transform:translate(-34%,-50%);
      border-left:18px solid var(--primary);
      border-top:12px solid transparent;
      border-bottom:12px solid transparent;
    }
    .compare-row{
      display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:stretch;
    }
    .check-item{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed #E2E8F0}
    .check-item:last-child{border-bottom:0}
    .check-dot{
      width:22px;height:22px;border-radius:50%;
      display:grid;place-items:center;flex:0 0 auto;margin-top:2px;
      background:#ECFDF5;color:#0F766E;font-weight:900;font-size:13px;
    }
    details{
      background:white;border:1px solid var(--line);border-radius:18px;
      padding:18px 20px;box-shadow:0 10px 24px rgba(15,23,42,.035);
    }
    summary{
      cursor:pointer;font-weight:800;color:#1E293B;list-style:none;
      display:flex;justify-content:space-between;gap:16px;align-items:center;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{
      content:"⌄";width:26px;height:26px;border-radius:50%;
      display:grid;place-items:center;background:#EFF6FF;color:var(--primary);
      transition:.2s ease;flex:0 0 auto;
    }
    details[open] summary:after{transform:rotate(180deg)}
    details p{margin:12px 0 0;color:var(--muted);font-size:15px}
    .form-control{
      width:100%;border:1px solid var(--line);border-radius:14px;background:white;
      min-height:48px;padding:12px 14px;color:var(--text);transition:.2s ease;
    }
    .form-control:focus{border-color:rgba(37,99,235,.56);box-shadow:0 0 0 4px rgba(37,99,235,.12);outline:none}
    .footer{
      background:#FFFFFF;border-top:1px solid var(--line);
      color:#475569;
    }
    .footer a{transition:.18s ease}
    .footer a:hover{color:var(--primary)}
    .soft-divider{height:1px;background:linear-gradient(90deg,transparent,#DBEAFE,transparent)}
    @media (max-width:1024px){
      .site-container{padding-inline:22px}
      .hero-grid{grid-template-columns:1fr}
      .section{padding-block:68px}
      .desktop-search{display:none}
      .compare-row{grid-template-columns:1fr}
    }
    @media (max-width:768px){
      .site-container{padding-inline:18px}
      .brand-icon{width:40px;height:40px;border-radius:13px}
      .brand-name{font-size:15px;max-width:210px}
      .top-actions{display:none}
      .section{padding-block:56px}
      .section-tight{padding-block:42px}
      .card{border-radius:20px}
      .mobile-full{width:100%}
      .hero-actions{flex-direction:column;align-items:stretch}
      .btn{width:100%}
    }
    @media (max-width:520px){
      .age-strip{font-size:12px}
      .hero-title{font-size:31px}
      .nav-tab{padding:8px 13px}
      .cover{min-height:138px}
    }

/* roulang page: category2 */
:root{
      --primary:#2563EB;
      --primary-soft:#DBEAFE;
      --primary-light:#38BDF8;
      --teal:#14B8A6;
      --amber:#F59E0B;
      --bg:#F7FAFC;
      --bg-soft:#F8FBFF;
      --text:#1E293B;
      --muted:#64748B;
      --border:#E2E8F0;
      --card:#FFFFFF;
      --radius:22px;
      --radius-sm:14px;
      --shadow:0 16px 40px rgba(15,23,42,.06);
      --shadow-hover:0 22px 54px rgba(15,23,42,.10);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 8%, rgba(56,189,248,.16), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(20,184,166,.12), transparent 30%),
        linear-gradient(180deg,#F8FBFF 0%,#F7FAFC 45%,#FFFFFF 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img,svg{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    .site-container{width:min(1220px, calc(100% - 48px));margin-inline:auto}
    .main-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.94);
      border-bottom:1px solid rgba(226,232,240,.86);
      box-shadow:0 8px 30px rgba(15,23,42,.04);
      backdrop-filter:blur(10px);
    }
    .brand-icon{
      width:42px;height:42px;border-radius:15px;flex:0 0 auto;position:relative;
      background:linear-gradient(135deg,#2563EB 0%,#38BDF8 52%,#14B8A6 100%);
      box-shadow:0 10px 24px rgba(37,99,235,.18);
    }
    .brand-icon:before{
      content:"";position:absolute;inset:9px;border:2px solid rgba(255,255,255,.78);border-radius:999px;
    }
    .brand-icon:after{
      content:"";position:absolute;left:17px;top:13px;border-left:11px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent;
      filter:drop-shadow(0 2px 4px rgba(15,23,42,.2));
    }
    .brand-name{font-size:clamp(15px,1.6vw,19px);max-width:430px}
    .search-box{
      background:#F8FAFC;border:1px solid var(--border);border-radius:999px;transition:.22s ease;
    }
    .search-box:focus-within{background:#fff;border-color:#93C5FD;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:46px;padding:.78rem 1.05rem;
      border-radius:14px;font-weight:800;font-size:14px;line-height:1;transition:.22s ease;border:1px solid transparent;white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:focus-visible,.nav-tab:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{
      outline:none;box-shadow:0 0 0 4px rgba(37,99,235,.18);
    }
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 24px rgba(37,99,235,.20)}
    .btn-primary:hover{background:#1D4ED8;box-shadow:0 18px 34px rgba(37,99,235,.26)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:#BFDBFE}
    .btn-secondary:hover{background:#EFF6FF;border-color:#93C5FD}
    .btn-warning{background:#FEF3C7;color:#92400E;border-color:#FDE68A}
    .btn-warning:hover{border-color:#F59E0B;background:#FFFBEB}
    .tabs-row{overflow-x:auto;scrollbar-width:none}
    .tabs-row::-webkit-scrollbar{display:none}
    .tabs-row:after{
      content:"";position:absolute;right:0;top:0;width:58px;height:44px;pointer-events:none;
      background:linear-gradient(90deg,rgba(255,255,255,0),#fff 78%);
    }
    .nav-tab{
      display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;
      color:#475569;font-size:14px;font-weight:800;border:1px solid transparent;transition:.2s ease;
    }
    .nav-tab:hover{background:#EFF6FF;color:var(--primary);border-color:#DBEAFE}
    .nav-tab.active{background:#DBEAFE;color:#1D4ED8;border-color:#BFDBFE}
    .age-bar{background:#FFFBEB;border-bottom:1px solid #FDE68A;color:#92400E}
    .section{padding:82px 0}
    .section-tight{padding:58px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#EFF6FF;
      color:#1D4ED8;font-size:13px;font-weight:900;border:1px solid #DBEAFE;
    }
    .eyebrow .dot,.status-dot{width:8px;height:8px;border-radius:99px;background:var(--teal);box-shadow:0 0 0 4px rgba(20,184,166,.12)}
    .hero-title{font-size:clamp(31px,4.4vw,52px);line-height:1.16;letter-spacing:-.05em;font-weight:900}
    .section-title{font-size:clamp(27px,3vw,36px);line-height:1.22;letter-spacing:-.04em;font-weight:900}
    .lead{font-size:clamp(16px,1.8vw,18px);color:var(--muted);line-height:1.9}
    .card{
      background:rgba(255,255,255,.94);border:1px solid rgba(226,232,240,.92);border-radius:var(--radius);
      box-shadow:var(--shadow);transition:.24s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .metric-card{padding:24px;position:relative;overflow:hidden}
    .metric-card:after{
      content:"";position:absolute;right:-28px;bottom:-28px;width:118px;height:118px;border-radius:999px;background:rgba(56,189,248,.12);
    }
    .metric-number{font-size:34px;line-height:1;font-weight:950;letter-spacing:-.04em;color:#0F172A}
    .tag{
      display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#F8FAFC;border:1px solid var(--border);
      color:#475569;font-size:12px;font-weight:800;
    }
    .tag-blue{background:#EFF6FF;border-color:#BFDBFE;color:#1D4ED8}
    .tag-teal{background:#ECFDF5;border-color:#A7F3D0;color:#0F766E}
    .tag-amber{background:#FFFBEB;border-color:#FDE68A;color:#92400E}
    .soft-divider{height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
    .abstract-panel{
      min-height:420px;border-radius:28px;position:relative;overflow:hidden;border:1px solid rgba(191,219,254,.95);
      background:
        linear-gradient(135deg,rgba(219,234,254,.96),rgba(240,253,250,.95)),
        radial-gradient(circle at 20% 20%,rgba(37,99,235,.18),transparent 24%);
      box-shadow:0 24px 70px rgba(37,99,235,.10);
    }
    .abstract-panel:before{
      content:"";position:absolute;inset:18px;border-radius:22px;
      background-image:linear-gradient(rgba(37,99,235,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.08) 1px,transparent 1px);
      background-size:28px 28px;mask-image:linear-gradient(180deg,#000,transparent 92%);
    }
    .step-card{
      position:relative;z-index:1;background:rgba(255,255,255,.86);border:1px solid rgba(226,232,240,.9);
      border-radius:20px;padding:18px;box-shadow:0 12px 28px rgba(15,23,42,.06);
    }
    .step-num{
      width:34px;height:34px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
      background:#2563EB;color:#fff;font-weight:900;
    }
    .timeline{position:relative}
    .timeline:before{
      content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;background:linear-gradient(#BFDBFE,#99F6E4);
    }
    .timeline-item{position:relative;padding-left:64px}
    .timeline-mark{
      position:absolute;left:5px;top:0;width:38px;height:38px;border-radius:14px;background:#fff;border:1px solid #BFDBFE;
      display:flex;align-items:center;justify-content:center;color:#2563EB;font-weight:950;box-shadow:0 8px 20px rgba(37,99,235,.10);
    }
    .check-item{
      display:flex;gap:14px;align-items:flex-start;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--border);
    }
    .check-icon{
      width:28px;height:28px;border-radius:10px;background:#ECFDF5;color:#0F766E;display:flex;align-items:center;justify-content:center;font-weight:950;flex:0 0 auto;
    }
    .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compare-card{border-radius:22px;border:1px solid var(--border);background:#fff;padding:26px}
    .compare-card.highlight{border-color:#93C5FD;background:linear-gradient(180deg,#EFF6FF,#fff)}
    .faq details{
      background:#fff;border:1px solid var(--border);border-radius:20px;padding:0 22px;box-shadow:0 10px 28px rgba(15,23,42,.04);
    }
    .faq summary{
      cursor:pointer;list-style:none;padding:20px 0;font-weight:900;color:#0F172A;display:flex;align-items:center;justify-content:space-between;gap:16px;
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq summary:after{content:"+";font-size:22px;color:#2563EB;transition:.2s ease}
    .faq details[open] summary:after{transform:rotate(45deg)}
    .faq p{color:#64748B;margin:0;padding:0 0 20px;line-height:1.85}
    .form-control{
      width:100%;border:1px solid #CBD5E1;background:#fff;border-radius:14px;min-height:48px;padding:12px 14px;
      color:#1E293B;transition:.2s ease;
    }
    .form-control:focus{border-color:#60A5FA;box-shadow:0 0 0 4px rgba(37,99,235,.12);outline:none}
    .footer{background:#FFFFFF;border-top:1px solid var(--border)}
    .footer a{color:#64748B;transition:.2s ease}
    .footer a:hover{color:#2563EB}
    .mini-chart{height:46px;border-radius:14px;background:linear-gradient(135deg,#DBEAFE,#F0FDFA);position:relative;overflow:hidden}
    .mini-chart:before{
      content:"";position:absolute;left:10px;right:10px;top:23px;height:2px;background:#93C5FD;transform:skewY(-9deg);
      box-shadow:28px -10px 0 #38BDF8,62px 6px 0 #14B8A6,94px -6px 0 #2563EB;
    }
    @media (max-width:1024px){
      .desktop-search{display:none}
      .site-container{width:min(100% - 36px, 1220px)}
      .section{padding:66px 0}
      .compare-grid{grid-template-columns:1fr}
    }
    @media (max-width:768px){
      .brand-icon{width:38px;height:38px;border-radius:13px}
      .brand-name{max-width:210px}
      .top-actions .btn-warning{display:none}
      .btn{min-height:44px;padding:.72rem .9rem}
      .site-container{width:min(100% - 28px, 1220px)}
      .section{padding:54px 0}
      .section-tight{padding:42px 0}
      .abstract-panel{min-height:auto}
      .timeline:before{left:18px}
      .timeline-item{padding-left:54px}
      .timeline-mark{left:0;width:36px;height:36px}
    }
    @media (max-width:520px){
      .top-actions .btn-primary{font-size:0;padding:.72rem .82rem}
      .top-actions .btn-primary:after{content:"浏览";font-size:13px}
      .nav-tab{padding:0 13px;font-size:13px}
      .hero-title{font-size:31px}
      .card,.compare-card{border-radius:18px}
    }

/* roulang page: category3 */
:root{
      --primary:#2563EB;
      --primary-soft:#DBEAFE;
      --primary-light:#38BDF8;
      --secondary:#14B8A6;
      --secondary-soft:#CCFBF1;
      --warning:#F59E0B;
      --warning-soft:#FEF3C7;
      --bg:#F8FBFF;
      --bg-2:#EEF6FF;
      --text:#1E293B;
      --muted:#64748B;
      --border:#E2E8F0;
      --card:#FFFFFF;
      --radius:22px;
      --radius-sm:14px;
      --shadow:0 16px 40px rgba(15,23,42,.06);
      --shadow-hover:0 22px 56px rgba(15,23,42,.11);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(56,189,248,.16), transparent 30%),
        radial-gradient(circle at 88% 16%, rgba(20,184,166,.12), transparent 28%),
        linear-gradient(180deg,#F8FBFF 0%,#FFFFFF 38%,#F7FAFC 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img,svg{max-width:100%;display:block}
    input,select,textarea,button{font:inherit}
    .site-container{
      width:min(1220px,calc(100% - 48px));
      margin-inline:auto;
    }
    .main-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.94);
      border-bottom:1px solid rgba(226,232,240,.9);
      box-shadow:0 10px 30px rgba(15,23,42,.04);
      backdrop-filter:blur(12px);
    }
    .brand-icon{
      width:42px;
      height:42px;
      border-radius:15px;
      display:inline-flex;
      flex:0 0 auto;
      background:
        radial-gradient(circle at 70% 22%,rgba(255,255,255,.95) 0 7px,transparent 8px),
        conic-gradient(from 45deg,#38BDF8,#2563EB,#14B8A6,#38BDF8);
      position:relative;
      box-shadow:0 12px 26px rgba(37,99,235,.22);
    }
    .brand-icon::before{
      content:"";
      position:absolute;
      left:15px;
      top:12px;
      width:0;
      height:0;
      border-top:9px solid transparent;
      border-bottom:9px solid transparent;
      border-left:14px solid #fff;
      filter:drop-shadow(0 2px 3px rgba(15,23,42,.18));
    }
    .brand-icon::after{
      content:"";
      position:absolute;
      inset:7px;
      border:2px solid rgba(255,255,255,.72);
      border-radius:50%;
    }
    .brand-name{font-size:clamp(14px,1.6vw,18px);max-width:430px}
    .search-box{
      border:1px solid var(--border);
      border-radius:999px;
      background:#fff;
      box-shadow:0 8px 24px rgba(15,23,42,.04);
      transition:.22s ease;
    }
    .search-box:focus-within{
      border-color:rgba(37,99,235,.42);
      box-shadow:0 0 0 4px rgba(37,99,235,.10),0 12px 28px rgba(15,23,42,.07);
    }
    .tabs-row{
      overflow-x:auto;
      scrollbar-width:none;
    }
    .tabs-row::-webkit-scrollbar{display:none}
    .tabs-row::after{
      content:"";
      position:absolute;
      right:0;
      top:0;
      bottom:12px;
      width:48px;
      pointer-events:none;
      background:linear-gradient(90deg,rgba(255,255,255,0),#fff);
    }
    .nav-tab{
      display:inline-flex;
      align-items:center;
      min-height:38px;
      padding:8px 15px;
      border-radius:999px;
      color:#475569;
      font-weight:700;
      font-size:14px;
      border:1px solid transparent;
      transition:.2s ease;
      white-space:nowrap;
    }
    .nav-tab:hover{
      color:var(--primary);
      background:#EFF6FF;
      border-color:#BFDBFE;
    }
    .nav-tab.active{
      color:#1D4ED8;
      background:#DBEAFE;
      border-color:#93C5FD;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.5);
    }
    .btn{
      min-height:46px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:12px 18px;
      border-radius:14px;
      font-weight:800;
      font-size:14px;
      border:1px solid transparent;
      transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;
      cursor:pointer;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
      outline:none;
      box-shadow:0 0 0 4px rgba(37,99,235,.18);
    }
    .btn-primary{
      background:linear-gradient(135deg,#2563EB,#38BDF8);
      color:#fff;
      box-shadow:0 14px 28px rgba(37,99,235,.22);
    }
    .btn-primary:hover{box-shadow:0 18px 38px rgba(37,99,235,.3)}
    .btn-secondary{
      color:#1D4ED8;
      background:#fff;
      border-color:#BFDBFE;
    }
    .btn-secondary:hover{background:#EFF6FF;border-color:#60A5FA}
    .btn-warning{
      color:#92400E;
      background:#FFFBEB;
      border-color:#FCD34D;
    }
    .btn-warning:hover{background:#FEF3C7;border-color:#F59E0B}
    .age-strip{
      background:linear-gradient(90deg,#FFFBEB,#ECFEFF);
      border-bottom:1px solid rgba(245,158,11,.22);
      color:#78350F;
    }
    .section{
      padding:84px 0;
    }
    .section-tight{padding:58px 0}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      font-size:13px;
      font-weight:800;
      border:1px solid var(--border);
      background:#fff;
      color:#475569;
    }
    .badge-blue{background:#EFF6FF;color:#1D4ED8;border-color:#BFDBFE}
    .badge-teal{background:#F0FDFA;color:#0F766E;border-color:#99F6E4}
    .badge-amber{background:#FFFBEB;color:#92400E;border-color:#FCD34D}
    .card{
      background:rgba(255,255,255,.96);
      border:1px solid rgba(226,232,240,.95);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    }
    .card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:#BFDBFE;
    }
    .soft-divider{height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
    .hero-panel{
      position:relative;
      overflow:hidden;
      border-radius:30px;
      border:1px solid rgba(191,219,254,.95);
      background:
        radial-gradient(circle at 18% 18%,rgba(56,189,248,.22),transparent 30%),
        radial-gradient(circle at 85% 30%,rgba(20,184,166,.18),transparent 26%),
        linear-gradient(135deg,#FFFFFF 0%,#EFF6FF 55%,#ECFEFF 100%);
      box-shadow:0 24px 70px rgba(37,99,235,.12);
    }
    .hero-panel::before{
      content:"";
      position:absolute;
      inset:0;
      opacity:.42;
      background-image:
        linear-gradient(rgba(37,99,235,.08) 1px,transparent 1px),
        linear-gradient(90deg,rgba(37,99,235,.08) 1px,transparent 1px);
      background-size:28px 28px;
      mask-image:linear-gradient(90deg,#000,transparent 76%);
    }
    .dashboard-card{
      background:rgba(255,255,255,.84);
      border:1px solid rgba(226,232,240,.9);
      border-radius:24px;
      box-shadow:0 18px 44px rgba(15,23,42,.08);
      backdrop-filter:blur(10px);
    }
    .rank-number{
      width:42px;
      height:42px;
      border-radius:14px;
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:900;
      color:#1D4ED8;
      background:#DBEAFE;
      border:1px solid #BFDBFE;
    }
    .rank-number.hot{
      color:#92400E;
      background:#FEF3C7;
      border-color:#FCD34D;
    }
    .trend-area{
      height:210px;
      border-radius:22px;
      background:
        linear-gradient(180deg,rgba(37,99,235,.08),rgba(20,184,166,.05)),
        repeating-linear-gradient(to right,rgba(148,163,184,.16) 0 1px,transparent 1px 52px),
        repeating-linear-gradient(to top,rgba(148,163,184,.14) 0 1px,transparent 1px 42px);
      position:relative;
      overflow:hidden;
      border:1px solid #E2E8F0;
    }
    .trend-area svg{
      position:absolute;
      inset:18px;
      width:calc(100% - 36px);
      height:calc(100% - 36px);
    }
    .tag-cloud a{
      display:inline-flex;
      align-items:center;
      padding:9px 13px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--border);
      color:#475569;
      font-weight:700;
      font-size:14px;
      margin:6px;
      transition:.2s ease;
    }
    .tag-cloud a:hover{
      background:#EFF6FF;
      color:#1D4ED8;
      border-color:#93C5FD;
      transform:translateY(-2px);
    }
    .comparison-row{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr .9fr 1fr;
      gap:14px;
      align-items:center;
      padding:16px 0;
      border-bottom:1px solid #E2E8F0;
    }
    .comparison-row:last-child{border-bottom:0}
    .form-field{
      width:100%;
      border:1px solid var(--border);
      background:#fff;
      border-radius:14px;
      padding:13px 14px;
      color:var(--text);
      transition:.2s ease;
    }
    .form-field:focus{
      border-color:#60A5FA;
      box-shadow:0 0 0 4px rgba(37,99,235,.12);
      outline:none;
    }
    details{
      background:#fff;
      border:1px solid var(--border);
      border-radius:18px;
      padding:18px 20px;
      box-shadow:0 10px 26px rgba(15,23,42,.04);
    }
    summary{
      cursor:pointer;
      font-weight:900;
      color:#1E293B;
      list-style:none;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    summary::-webkit-details-marker{display:none}
    summary::after{
      content:"";
      width:10px;
      height:10px;
      border-right:2px solid #2563EB;
      border-bottom:2px solid #2563EB;
      transform:rotate(45deg);
      transition:.2s ease;
      flex:0 0 auto;
    }
    details[open] summary::after{transform:rotate(225deg)}
    details p{margin:12px 0 0;color:#64748B;font-size:15px;line-height:1.8}
    .footer{
      background:#FFFFFF;
      border-top:1px solid var(--border);
    }
    .footer a{
      color:#64748B;
      transition:.2s ease;
    }
    .footer a:hover{color:#2563EB}
    .mini-cover{
      border-radius:18px;
      min-height:132px;
      background:
        radial-gradient(circle at 28% 28%,rgba(255,255,255,.88) 0 10px,transparent 11px),
        linear-gradient(135deg,rgba(37,99,235,.72),rgba(56,189,248,.32) 46%,rgba(20,184,166,.42)),
        repeating-linear-gradient(45deg,rgba(255,255,255,.24) 0 8px,transparent 8px 16px);
      position:relative;
      overflow:hidden;
    }
    .mini-cover::before{
      content:"";
      position:absolute;
      left:50%;
      top:50%;
      transform:translate(-45%,-50%);
      border-top:18px solid transparent;
      border-bottom:18px solid transparent;
      border-left:28px solid rgba(255,255,255,.92);
      filter:drop-shadow(0 6px 10px rgba(15,23,42,.18));
    }
    .mini-cover::after{
      content:"";
      position:absolute;
      inset:14px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.42);
    }
    @media (max-width:1024px){
      .desktop-search{display:none}
      .comparison-row{grid-template-columns:1fr 1fr;gap:10px}
      .comparison-row > div:first-child{grid-column:1/-1}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 32px,1220px)}
      .section{padding:58px 0}
      .main-header .top-actions .btn-warning{display:none}
      .brand-name{max-width:230px}
      .hero-panel{border-radius:24px}
      .comparison-row{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .site-container{width:min(100% - 24px,1220px)}
      .brand-icon{width:38px;height:38px;border-radius:13px}
      .top-actions .btn-primary{padding-inline:12px;font-size:13px}
      .nav-tab{font-size:13px;padding-inline:12px}
      .btn{width:100%}
      .mobile-btn-row{flex-direction:column}
      h1{word-break:break-word}
    }

/* roulang page: category1 */
:root{
      --bg: #f7fafc;
      --panel: #ffffff;
      --line: #e2e8f0;
      --text: #1e293b;
      --muted: #64748b;
      --blue: #2563eb;
      --blue-2: #38bdf8;
      --teal: #14b8a6;
      --amber: #f59e0b;
      --shadow: 0 16px 40px rgba(15,23,42,.06);
      --radius: 24px;
    }
    html{scroll-behavior:smooth;}
    body{
      background:
        radial-gradient(circle at 20% 0%, rgba(56,189,248,.12), transparent 32%),
        radial-gradient(circle at 82% 8%, rgba(37,99,235,.10), transparent 30%),
        linear-gradient(180deg,#f8fbff 0%,#f7fafc 38%,#eef6ff 100%);
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(37,99,235,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37,99,235,.03) 1px, transparent 1px);
      background-size: 36px 36px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 70%);
      opacity:.7;
    }
    a{transition:all .2s ease; text-decoration:none;}
    img{display:block; max-width:100%;}
    input, textarea, select{
      transition: box-shadow .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
      font-family: inherit;
    }
    input::placeholder, textarea::placeholder{color:#94a3b8;}
    input:focus-visible, textarea:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible{
      outline:none;
      box-shadow: 0 0 0 4px rgba(37,99,235,.16);
      border-color: rgba(37,99,235,.35);
    }
    .site-container{
      width: min(1280px, calc(100% - 2rem));
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }
    @media (min-width: 768px){
      .site-container{
        width: min(1280px, calc(100% - 3rem));
      }
    }
    .main-header{
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255,255,255,.94);
      backdrop-filter: saturate(180%) blur(6px);
      border-bottom: 1px solid rgba(226,232,240,.9);
      box-shadow: 0 8px 24px rgba(15,23,42,.04);
    }
    .brand-icon{
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background: linear-gradient(135deg, #2563eb 0%, #38bdf8 100%);
      position: relative;
      flex: none;
      box-shadow: 0 10px 24px rgba(37,99,235,.18);
    }
    .brand-icon::before{
      content:"";
      position:absolute;
      inset: 10px;
      border: 2px solid rgba(255,255,255,.88);
      border-radius: 999px;
    }
    .brand-icon::after{
      content:"";
      position:absolute;
      left: 16px;
      top: 12px;
      width: 0;
      height: 0;
      border-left: 12px solid rgba(255,255,255,.95);
      border-top: 8px solid transparent;
      border-bottom: 8px solid transparent;
    }
    .search-box{
      background:#fff;
      border:1px solid var(--line);
      border-radius:16px;
      box-shadow:0 10px 30px rgba(15,23,42,.05);
    }
    .search-box input{color:#0f172a;}
    .search-box:focus-within{
      border-color:rgba(37,99,235,.35);
      box-shadow:0 0 0 4px rgba(37,99,235,.10), 0 10px 30px rgba(15,23,42,.05);
    }
    .nav-tab{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:0 16px;
      border-radius:999px;
      border:1px solid transparent;
      color:#475569;
      background:transparent;
      font-weight:600;
      font-size:14px;
      white-space:nowrap;
    }
    .nav-tab:hover{
      background:rgba(37,99,235,.08);
      color:var(--blue);
    }
    .nav-tab.active{
      background:rgba(37,99,235,.10);
      color:var(--blue);
      border-color:rgba(37,99,235,.18);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 18px;
      border-radius:14px;
      font-weight:700;
      font-size:14px;
      line-height:1;
      border:1px solid transparent;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    }
    .btn:hover{
      transform:translateY(-1px);
      box-shadow:0 14px 28px rgba(15,23,42,.08);
    }
    .btn-primary{
      background:linear-gradient(135deg, #2563eb 0%, #38bdf8 100%);
      color:#fff;
    }
    .btn-primary:hover{
      background:linear-gradient(135deg, #1d4ed8 0%, #0ea5e9 100%);
    }
    .btn-secondary{
      background:#fff;
      color:var(--blue);
      border-color:#bfdbfe;
    }
    .btn-secondary:hover{
      background:#eff6ff;
    }
    .btn-warning{
      background:rgba(245,158,11,.12);
      color:#92400e;
      border-color:rgba(245,158,11,.22);
    }
    .btn-warning:hover{
      background:rgba(245,158,11,.18);
    }
    .section-block{
      padding:72px 0;
    }
    .card-surface{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(226,232,240,.9);
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .soft-divider{
      height:1px;
      background:linear-gradient(90deg, rgba(226,232,240,0), rgba(226,232,240,1), rgba(226,232,240,0));
    }
    .metric-ring{position:relative;}
    .metric-ring::after{
      content:"";
      position:absolute;
      inset:auto 16px 16px auto;
      width:88px;
      height:88px;
      border-radius:999px;
      background:radial-gradient(circle, rgba(56,189,248,.16), rgba(56,189,248,0) 70%);
      pointer-events:none;
    }
    .faq-summary::-webkit-details-marker{display:none;}
    details summary .faq-arrow{transition:transform .2s ease;}
    details[open] summary .faq-arrow{transform:rotate(180deg);}
    .scrollbar-hide::-webkit-scrollbar{display:none;}
    .scrollbar-hide{scrollbar-width:none;-ms-overflow-style:none;}
    .table-lite th,
    .table-lite td{
      padding:16px 18px;
      border-bottom:1px solid #e2e8f0;
      text-align:left;
    }
    .table-lite th{
      background:#f8fbff;
      color:#334155;
      font-weight:700;
    }
    .table-lite tr:last-child td{border-bottom:none;}
    .list-check li{
      position:relative;
      padding-left:26px;
    }
    .list-check li::before{
      content:"";
      position:absolute;
      left:0;
      top:.6em;
      width:14px;
      height:14px;
      border-radius:999px;
      background:linear-gradient(135deg,#14b8a6,#2563eb);
    }
    .footer a{
      color:#64748b;
    }
    .footer a:hover{
      color:var(--blue);
    }
    .floating-dot{
      position:absolute;
      border-radius:999px;
      background:rgba(56,189,248,.12);
      pointer-events:none;
    }
    @media (max-width: 767px){
      .section-block{padding:56px 0;}
    }