/* roulang page: index */
:root{
      --primary:#7c3aed;
      --primary-dark:#5b21b6;
      --primary-soft:#ede9fe;
      --secondary:#06b6d4;
      --accent:#f97316;
      --bg:#f7f8fc;
      --surface:#ffffff;
      --surface-2:#f1f5f9;
      --text:#172033;
      --muted:#64748b;
      --weak:#94a3b8;
      --border:#e2e8f0;
      --line:#dbe3ef;
      --success:#16a34a;
      --warning:#f59e0b;
      --danger:#ef4444;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --shadow-sm:0 8px 22px rgba(30,41,59,.06);
      --shadow:0 18px 45px rgba(30,41,59,.10);
      --shadow-lg:0 28px 70px rgba(76,29,149,.18);
      --container:1180px;
      --nav-h:76px;
      --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",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 8% 0%, rgba(124,58,237,.16), transparent 31%),
        radial-gradient(circle at 92% 8%, rgba(6,182,212,.14), transparent 34%),
        linear-gradient(180deg,#fbfdff 0%,var(--bg) 45%,#ffffff 100%);
      line-height:1.65;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(124,58,237,.18)}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(226,232,240,.85);
      box-shadow:0 10px 28px rgba(15,23,42,.04);
    }
    .topbar{
      min-height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 14px 32px rgba(124,58,237,.28);
      font-size:20px;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.1;
    }
    .brand-text strong{font-size:18px}
    .brand-text span{font-size:12px;color:var(--muted);font-weight:700;margin-top:4px}
    .search-wrap{
      flex:1;
      max-width:520px;
      display:flex;
      align-items:center;
      gap:10px;
      border:1px solid var(--border);
      background:#fff;
      border-radius:999px;
      padding:8px 12px 8px 16px;
      box-shadow:var(--shadow-sm);
      transition:.25s ease;
    }
    .search-wrap:focus-within{
      border-color:rgba(124,58,237,.55);
      box-shadow:0 0 0 4px rgba(124,58,237,.10),var(--shadow-sm);
    }
    .search-icon{color:var(--primary);font-weight:900}
    .search-wrap input{
      width:100%;
      border:0;
      outline:0;
      background:transparent;
      color:var(--text);
      font-size:14px;
    }
    .header-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .btn{
      border:0;
      border-radius:999px;
      padding:11px 18px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      font-weight:800;
      font-size:14px;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
      white-space:nowrap;
    }
    .btn:focus-visible,.nav-tab:focus-visible,.footer-link:focus-visible,.faq-item summary:focus-visible,input:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(124,58,237,.22);
      outline-offset:3px;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 14px 30px rgba(124,58,237,.24);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(124,58,237,.32)}
    .btn-ghost{
      color:var(--primary-dark);
      background:rgba(124,58,237,.09);
      border:1px solid rgba(124,58,237,.14);
    }
    .btn-ghost:hover{background:rgba(124,58,237,.14);transform:translateY(-1px)}
    .btn-line{
      color:var(--text);
      background:#fff;
      border:1px solid var(--border);
    }
    .btn-line:hover{border-color:rgba(124,58,237,.35);color:var(--primary-dark);box-shadow:var(--shadow-sm)}
    .channel-row{
      border-top:1px solid rgba(226,232,240,.72);
      overflow-x:auto;
      scrollbar-width:none;
    }
    .channel-row::-webkit-scrollbar{display:none}
    .channel-tabs{
      display:flex;
      align-items:center;
      gap:10px;
      min-height:54px;
      padding:8px 0;
    }
    .nav-tab{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 16px;
      border-radius:999px;
      color:#475569;
      font-weight:800;
      font-size:14px;
      border:1px solid transparent;
      white-space:nowrap;
      transition:.22s ease;
    }
    .nav-tab:hover{
      color:var(--primary-dark);
      background:rgba(124,58,237,.08);
      border-color:rgba(124,58,237,.10);
    }
    .nav-tab.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 24px rgba(124,58,237,.18);
    }
    main{display:block}
    section{padding:72px 0}
    .hero{
      padding:58px 0 76px;
    }
    .hero-panel{
      position:relative;
      overflow:hidden;
      border-radius:36px;
      padding:34px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.96),rgba(255,255,255,.80)),
        linear-gradient(135deg,rgba(124,58,237,.12),rgba(6,182,212,.12));
      border:1px solid rgba(255,255,255,.72);
      box-shadow:var(--shadow-lg);
    }
    .hero-panel:before{
      content:"";
      position:absolute;
      inset:auto -90px -110px auto;
      width:340px;
      height:340px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(124,58,237,.22),transparent 66%);
      pointer-events:none;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.02fr .98fr;
      gap:34px;
      align-items:center;
      position:relative;
      z-index:1;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(124,58,237,.10);
      color:var(--primary-dark);
      font-size:13px;
      font-weight:900;
      border:1px solid rgba(124,58,237,.12);
      margin-bottom:18px;
    }
    h1{
      margin:0;
      font-size:clamp(34px,5vw,62px);
      line-height:1.06;
      letter-spacing:-.055em;
      max-width:780px;
    }
    .hero-desc{
      margin:18px 0 0;
      color:#475569;
      font-size:17px;
      max-width:720px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .data-strip{
      margin-top:28px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      max-width:690px;
    }
    .data-badge{
      padding:14px 16px;
      border-radius:18px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(226,232,240,.88);
      box-shadow:var(--shadow-sm);
    }
    .data-badge strong{
      display:block;
      font-size:22px;
      line-height:1;
      color:var(--primary-dark);
    }
    .data-badge span{
      display:block;
      margin-top:7px;
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .icon-stage{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .icon-card{
      min-height:94px;
      border-radius:24px;
      padding:16px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:#fff;
      border:1px solid rgba(226,232,240,.9);
      box-shadow:var(--shadow-sm);
      transition:.25s ease;
    }
    .icon-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .icon-card:nth-child(2n){background:linear-gradient(180deg,#fff,#f6f2ff)}
    .icon-card:nth-child(3n){background:linear-gradient(180deg,#fff,#effbfd)}
    .icon-symbol{
      width:36px;
      height:36px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;
      font-size:18px;
      box-shadow:0 10px 20px rgba(124,58,237,.18);
    }
    .icon-card span{font-weight:900;font-size:14px}
    .status-bar{
      grid-column:span 4;
      border-radius:24px;
      background:#111827;
      color:#fff;
      padding:16px;
      display:grid;
      gap:10px;
      box-shadow:0 18px 36px rgba(17,24,39,.22);
    }
    .status-top{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:#cbd5e1}
    .progress{
      height:10px;
      border-radius:999px;
      background:rgba(255,255,255,.16);
      overflow:hidden;
    }
    .progress i{
      display:block;
      width:76%;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--secondary),#a78bfa,var(--accent));
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:26px;
    }
    .section-title{
      margin:0;
      font-size:clamp(26px,3vw,40px);
      line-height:1.18;
      letter-spacing:-.035em;
    }
    .section-desc{
      margin:10px 0 0;
      color:var(--muted);
      max-width:760px;
      font-size:16px;
    }
    .mini-link{
      color:var(--primary-dark);
      font-weight:900;
      display:inline-flex;
      align-items:center;
      gap:6px;
      white-space:nowrap;
    }
    .mini-link:hover{color:var(--primary)}
    .series{
      padding-top:0;
    }
    .cover-flow{
      display:grid;
      grid-template-columns:1.1fr .9fr .9fr;
      gap:18px;
    }
    .cover-card{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      padding:24px;
      min-height:240px;
      background:linear-gradient(135deg,#2e1065,#7c3aed 55%,#06b6d4);
      color:#fff;
      box-shadow:var(--shadow);
    }
    .cover-card:after{
      content:"";
      position:absolute;
      width:220px;
      height:220px;
      right:-70px;
      bottom:-80px;
      border-radius:50%;
      background:rgba(255,255,255,.16);
    }
    .cover-card.light{
      color:var(--text);
      background:#fff;
      border:1px solid var(--border);
    }
    .cover-card.light:after{background:rgba(124,58,237,.08)}
    .cover-card h3{margin:0 0 10px;font-size:24px;letter-spacing:-.02em}
    .cover-card p{margin:0;color:inherit;opacity:.82}
    .cover-tags{
      position:relative;
      z-index:1;
      margin-top:26px;
      display:flex;
      flex-wrap:wrap;
      gap:9px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.18);
      border:1px solid rgba(255,255,255,.22);
      color:inherit;
      font-size:13px;
      font-weight:800;
    }
    .light .tag{
      color:var(--primary-dark);
      background:rgba(124,58,237,.08);
      border-color:rgba(124,58,237,.12);
    }
    .hot{background:linear-gradient(180deg,rgba(255,255,255,.2),rgba(237,233,254,.32))}
    .hot-layout{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:22px;
      align-items:start;
    }
    .rank-panel{
      border-radius:30px;
      padding:24px;
      background:#111827;
      color:#fff;
      box-shadow:var(--shadow);
      position:sticky;
      top:150px;
    }
    .rank-panel h3{margin:0 0 12px;font-size:24px}
    .rank-panel p{margin:0;color:#cbd5e1}
    .rank-list{
      margin:22px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .rank-list li{
      display:flex;
      gap:12px;
      align-items:center;
      padding:12px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.10);
    }
    .rank-no{
      width:30px;height:30px;border-radius:11px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--accent),#facc15);
      color:#111827;
      font-weight:1000;
    }
    .items-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .item-card{
      border-radius:26px;
      padding:22px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-sm);
      transition:.25s ease;
      min-height:190px;
    }
    .item-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow);
      border-color:rgba(124,58,237,.24);
    }
    .item-head{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      margin-bottom:14px;
    }
    .item-card h3{margin:0;font-size:20px}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      padding:6px 10px;
      font-size:12px;
      font-weight:900;
      color:var(--primary-dark);
      background:var(--primary-soft);
      white-space:nowrap;
    }
    .item-card p{margin:0;color:var(--muted);font-size:15px}
    .item-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:18px;
    }
    .pill{
      display:inline-flex;
      padding:6px 10px;
      border-radius:999px;
      background:var(--surface-2);
      color:#475569;
      font-size:12px;
      font-weight:800;
    }
    .topics-wrap{
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:22px;
      align-items:stretch;
    }
    .topic-cloud{
      border-radius:30px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-sm);
      padding:24px;
    }
    .topic-tags{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:18px;
    }
    .topic-tags a{
      border-radius:999px;
      padding:10px 14px;
      background:linear-gradient(180deg,#fff,#f8fafc);
      border:1px solid var(--border);
      color:#334155;
      font-weight:800;
      transition:.22s ease;
    }
    .topic-tags a:hover{
      transform:translateY(-2px);
      color:var(--primary-dark);
      border-color:rgba(124,58,237,.28);
      box-shadow:var(--shadow-sm);
    }
    .compare-card{
      border-radius:30px;
      padding:24px;
      background:linear-gradient(135deg,#fff, #f4f1ff);
      border:1px solid rgba(124,58,237,.14);
      box-shadow:var(--shadow-sm);
    }
    .compare-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:18px;
    }
    .plan{
      border-radius:22px;
      padding:18px;
      background:#fff;
      border:1px solid var(--border);
      position:relative;
    }
    .plan.recommend{
      border-color:rgba(124,58,237,.48);
      box-shadow:0 18px 36px rgba(124,58,237,.13);
      transform:translateY(-4px);
    }
    .plan h4{margin:0 0 8px;font-size:17px}
    .plan strong{display:block;font-size:26px;color:var(--primary-dark)}
    .plan p{margin:8px 0 0;color:var(--muted);font-size:13px}
    .news{
      background:#fff;
    }
    .news-layout{
      display:grid;
      grid-template-columns:1.28fr .72fr;
      gap:24px;
    }
    .news-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .news-list a{
      display:grid;
      grid-template-columns:auto 1fr auto;
      align-items:center;
      gap:14px;
      padding:16px;
      border-radius:20px;
      background:#fff;
      border:1px solid var(--border);
      transition:.22s ease;
    }
    .news-list a:hover{
      transform:translateX(4px);
      border-color:rgba(124,58,237,.28);
      box-shadow:var(--shadow-sm);
    }
    .news-date{
      color:var(--primary-dark);
      font-weight:900;
      font-size:13px;
      background:rgba(124,58,237,.08);
      padding:7px 10px;
      border-radius:999px;
    }
    .news-title{font-weight:900;color:#1e293b}
    .news-note{color:var(--weak);font-size:13px}
    .recommend-box{
      border-radius:28px;
      padding:22px;
      background:linear-gradient(135deg,#111827,#312e81);
      color:#fff;
      box-shadow:var(--shadow);
    }
    .recommend-box h3{margin:0 0 10px}
    .recommend-box p{margin:0;color:#cbd5e1}
    .check-list{
      margin:18px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#e2e8f0;
      font-size:14px;
    }
    .check-list li:before{
      content:"✓";
      width:22px;height:22px;border-radius:50%;
      display:grid;place-items:center;
      flex:0 0 22px;
      background:rgba(34,197,94,.18);
      color:#86efac;
      font-weight:1000;
    }
    .faq-section{
      background:linear-gradient(180deg,#fff,#f8fafc);
    }
    .faq-grid{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:24px;
    }
    .faq-aside{
      border-radius:30px;
      padding:26px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-sm);
    }
    .faq-aside h3{margin:0 0 12px;font-size:25px}
    .faq-aside p{margin:0;color:var(--muted)}
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border-radius:22px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    .faq-item summary{
      list-style:none;
      padding:18px 20px;
      cursor:pointer;
      font-weight:900;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:28px;height:28px;border-radius:10px;
      display:grid;place-items:center;
      background:rgba(124,58,237,.08);
      color:var(--primary-dark);
      font-size:20px;
      line-height:1;
      transition:.22s ease;
    }
    .faq-item[open] summary:after{content:"−";background:var(--primary);color:#fff}
    .faq-item p{
      margin:0;
      padding:0 20px 20px;
      color:var(--muted);
      font-size:15px;
    }
    .member{
      padding-bottom:86px;
    }
    .member-panel{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:26px;
      border-radius:36px;
      padding:30px;
      background:
        linear-gradient(135deg,rgba(124,58,237,.94),rgba(6,182,212,.88)),
        #6d28d9;
      color:#fff;
      box-shadow:var(--shadow-lg);
      overflow:hidden;
      position:relative;
    }
    .member-panel:before{
      content:"";
      position:absolute;
      width:320px;height:320px;border-radius:50%;
      right:-120px;top:-140px;
      background:rgba(255,255,255,.16);
    }
    .member-content,.trial-form{position:relative;z-index:1}
    .member-content h2{margin:0;font-size:clamp(28px,3.5vw,46px);line-height:1.15;letter-spacing:-.04em}
    .member-content p{margin:16px 0 0;color:rgba(255,255,255,.82)}
    .benefit-list{
      margin:24px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .benefit-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      padding:12px 14px;
      border-radius:18px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
    }
    .benefit-list li:before{
      content:"";
      margin-top:7px;
      width:8px;height:8px;border-radius:50%;
      background:#fef08a;
      box-shadow:0 0 0 5px rgba(254,240,138,.16);
      flex:0 0 8px;
    }
    .trial-form{
      background:rgba(255,255,255,.96);
      color:var(--text);
      border-radius:28px;
      padding:24px;
      box-shadow:0 24px 54px rgba(30,41,59,.16);
    }
    .trial-form h3{margin:0 0 8px;font-size:24px}
    .trial-form p{margin:0 0 18px;color:var(--muted);font-size:14px}
    .form-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }
    .field{display:grid;gap:7px}
    .field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:900;color:#334155}
    .field input,.field textarea,.field select{
      width:100%;
      border:1px solid var(--border);
      border-radius:16px;
      padding:12px 13px;
      color:var(--text);
      background:#fff;
      outline:0;
      transition:.22s ease;
    }
    .field textarea{min-height:86px;resize:vertical}
    .field input:focus,.field textarea:focus,.field select:focus{
      border-color:rgba(124,58,237,.55);
      box-shadow:0 0 0 4px rgba(124,58,237,.10);
    }
    .form-tip{
      margin-top:12px;
      color:var(--muted);
      font-size:12px;
    }
    .site-footer{
      background:#0f172a;
      color:#cbd5e1;
      padding:48px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:26px;
      padding-bottom:28px;
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:1000;
      font-size:18px;
      margin-bottom:12px;
    }
    .footer-brand .brand-mark{width:38px;height:38px;border-radius:14px}
    .footer-text{margin:0;color:#94a3b8;max-width:520px}
    .footer-col h3{margin:0 0 12px;color:#fff;font-size:16px}
    .footer-links{
      display:grid;
      gap:8px;
    }
    .footer-link{
      color:#94a3b8;
      transition:.22s ease;
      width:max-content;
    }
    .footer-link:hover{color:#fff;transform:translateX(3px)}
    .copyright{
      padding-top:22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      color:#94a3b8;
      font-size:13px;
      flex-wrap:wrap;
    }
    .float-cta{
      position:fixed;
      left:50%;
      transform:translateX(-50%);
      bottom:18px;
      z-index:40;
      width:min(620px,calc(100% - 28px));
      border-radius:999px;
      background:rgba(15,23,42,.88);
      color:#fff;
      backdrop-filter:blur(16px);
      box-shadow:0 20px 54px rgba(15,23,42,.28);
      border:1px solid rgba(255,255,255,.12);
      padding:10px 12px 10px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .float-cta span{font-size:14px;font-weight:800}
    .float-cta .btn{padding:9px 14px}
    @media (max-width:1024px){
      .topbar{flex-wrap:wrap}
      .search-wrap{order:3;max-width:none;flex-basis:100%}
      .hero-grid,.hot-layout,.topics-wrap,.news-layout,.faq-grid,.member-panel{grid-template-columns:1fr}
      .rank-panel{position:relative;top:auto}
      .cover-flow{grid-template-columns:1fr 1fr}
      .cover-card:first-child{grid-column:1/-1}
      .icon-stage{grid-template-columns:repeat(4,1fr)}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      section{padding:52px 0}
      .hero{padding:34px 0 56px}
      .hero-panel{padding:24px;border-radius:28px}
      .topbar{gap:12px}
      .brand-text strong{font-size:16px}
      .header-actions{width:100%;justify-content:space-between}
      .header-actions .btn{flex:1}
      .data-strip{grid-template-columns:1fr}
      .icon-stage{grid-template-columns:repeat(2,1fr)}
      .status-bar{grid-column:span 2}
      .section-head{display:block}
      .section-head .mini-link{margin-top:14px}
      .cover-flow,.items-grid,.compare-grid,.footer-grid{grid-template-columns:1fr}
      .news-list a{grid-template-columns:1fr;gap:8px}
      .form-grid{grid-template-columns:1fr}
      .float-cta{border-radius:22px;align-items:flex-start;flex-direction:column}
    }
    @media (max-width:520px){
      h1{font-size:32px}
      .hero-actions{display:grid}
      .btn{width:100%}
      .icon-card{min-height:86px}
      .member-panel{padding:20px;border-radius:28px}
      .trial-form{padding:18px;border-radius:22px}
      .copyright{display:block}
    }

/* roulang page: category1 */
:root {
      --bg: #f7f8ff;
      --bg-soft: #eef2ff;
      --surface: #ffffff;
      --surface-2: #fbfcff;
      --text: #172033;
      --muted: #647087;
      --weak: #8a94a8;
      --primary: #6d5dfc;
      --primary-dark: #5142db;
      --secondary: #10b8a6;
      --accent: #ff8a3d;
      --pink: #ef5da8;
      --border: rgba(23, 32, 51, .10);
      --border-strong: rgba(109, 93, 252, .22);
      --shadow: 0 18px 50px rgba(36, 45, 84, .12);
      --shadow-soft: 0 10px 30px rgba(36, 45, 84, .08);
      --radius-lg: 28px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --container: 1180px;
      --ease: all .22s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      min-height: 100vh;
      background:
        radial-gradient(circle at 8% 0%, rgba(109, 93, 252, .18), transparent 32%),
        radial-gradient(circle at 92% 8%, rgba(16, 184, 166, .15), transparent 28%),
        linear-gradient(180deg, #f9faff 0%, #f4f7ff 42%, #ffffff 100%);
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ease);
    }

    img {
      max-width: 100%;
      display: block;
    }

    input,
    button {
      font: inherit;
    }

    button,
    .btn {
      -webkit-tap-highlight-color: transparent;
    }

    ::selection {
      background: rgba(109, 93, 252, .18);
      color: var(--primary-dark);
    }

    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, .86);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(23, 32, 51, .08);
      box-shadow: 0 12px 35px rgba(31, 38, 75, .06);
    }

    .topbar {
      min-height: 82px;
      display: grid;
      grid-template-columns: auto minmax(260px, 1fr) auto;
      gap: 22px;
      align-items: center;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 250px;
    }

    .brand:hover {
      transform: translateY(-1px);
    }

    .brand-mark {
      width: 44px;
      height: 44px;
      flex: 0 0 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 16px;
      color: #fff;
      font-weight: 900;
      font-size: 22px;
      letter-spacing: -1px;
      background: linear-gradient(135deg, var(--primary), var(--pink) 55%, var(--accent));
      box-shadow: 0 12px 25px rgba(109, 93, 252, .30);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 1px;
    }

    .brand-text strong {
      font-size: 18px;
      line-height: 1.2;
      letter-spacing: -.3px;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-text span {
      font-size: 12px;
      color: var(--muted);
    }

    .search-wrap {
      position: relative;
      height: 46px;
      display: flex;
      align-items: center;
      border: 1px solid var(--border);
      background: rgba(247, 248, 255, .82);
      border-radius: 999px;
      overflow: hidden;
      transition: var(--ease);
    }

    .search-wrap:focus-within {
      border-color: rgba(109, 93, 252, .55);
      background: #fff;
      box-shadow: 0 0 0 4px rgba(109, 93, 252, .10);
    }

    .search-icon {
      width: 48px;
      text-align: center;
      color: var(--weak);
      font-size: 22px;
      line-height: 1;
    }

    .search-wrap input {
      width: 100%;
      height: 100%;
      border: 0;
      outline: none;
      background: transparent;
      color: var(--text);
      padding-right: 18px;
      font-size: 14px;
    }

    .search-wrap input::placeholder {
      color: #9aa4b6;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      white-space: nowrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 11px 18px;
      border-radius: 999px;
      font-weight: 800;
      font-size: 14px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--ease);
    }

    .btn:focus-visible,
    .nav-tab:focus-visible,
    .footer-link:focus-visible,
    .brand:focus-visible,
    .toc-link:focus-visible,
    .share-btn:focus-visible {
      outline: 3px solid rgba(109, 93, 252, .22);
      outline-offset: 3px;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--pink));
      box-shadow: 0 14px 28px rgba(109, 93, 252, .26);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(109, 93, 252, .32);
    }

    .btn-line {
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .08);
      border-color: rgba(109, 93, 252, .16);
    }

    .btn-line:hover {
      background: rgba(109, 93, 252, .13);
      transform: translateY(-1px);
    }

    .btn-dark {
      background: #172033;
      color: #fff;
      box-shadow: 0 16px 30px rgba(23, 32, 51, .22);
    }

    .btn-dark:hover {
      background: #0f1728;
      transform: translateY(-2px);
    }

    .channel-row {
      padding: 0 0 14px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .channel-row::-webkit-scrollbar {
      display: none;
    }

    .channel-tabs {
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: max-content;
    }

    .nav-tab {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 42px;
      padding: 9px 17px;
      border-radius: 999px;
      color: var(--muted);
      font-weight: 800;
      font-size: 14px;
      background: transparent;
      border: 1px solid transparent;
    }

    .nav-tab:hover {
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .08);
    }

    .nav-tab.active {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 10px 24px rgba(109, 93, 252, .22);
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 74px 0;
    }

    .section-tight {
      padding: 46px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .10);
      border: 1px solid rgba(109, 93, 252, .14);
      font-size: 13px;
      font-weight: 900;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--secondary);
      box-shadow: 0 0 0 5px rgba(16, 184, 166, .12);
    }

    .page-hero {
      padding: 54px 0 42px;
    }

    .hero-card {
      position: relative;
      min-height: 470px;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 34px;
      align-items: stretch;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, .72);
      border-radius: 36px;
      background:
        linear-gradient(135deg, rgba(109, 93, 252, .96), rgba(239, 93, 168, .88) 50%, rgba(16, 184, 166, .86)),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, .22), transparent 34%);
      box-shadow: var(--shadow);
    }

    .hero-card::before {
      content: "";
      position: absolute;
      inset: auto -8% -35% 28%;
      height: 360px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .16);
      filter: blur(2px);
    }

    .hero-copy {
      position: relative;
      z-index: 1;
      padding: 54px 0 54px 54px;
      color: #fff;
    }

    .hero-copy .eyebrow {
      color: #fff;
      background: rgba(255, 255, 255, .16);
      border-color: rgba(255, 255, 255, .24);
    }

    .hero-copy .eyebrow::before {
      background: #fff;
      box-shadow: 0 0 0 5px rgba(255, 255, 255, .16);
    }

    h1 {
      margin-top: 18px;
      max-width: 650px;
      font-size: clamp(40px, 5vw, 72px);
      line-height: 1.02;
      letter-spacing: -2.4px;
      font-weight: 950;
    }

    .hero-lead {
      max-width: 640px;
      margin-top: 22px;
      color: rgba(255, 255, 255, .88);
      font-size: 18px;
      line-height: 1.9;
    }

    .hero-actions {
      margin-top: 30px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-actions .btn-line {
      color: #fff;
      background: rgba(255, 255, 255, .15);
      border-color: rgba(255, 255, 255, .30);
    }

    .hero-actions .btn-line:hover {
      background: rgba(255, 255, 255, .23);
    }

    .cover-panel {
      position: relative;
      z-index: 1;
      margin: 28px 28px 28px 0;
      border-radius: 30px;
      background: rgba(255, 255, 255, .88);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(255, 255, 255, .66);
      box-shadow: 0 18px 55px rgba(23, 32, 51, .18);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      color: var(--text);
    }

    .cover-top {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: flex-start;
    }

    .cover-title {
      font-size: 22px;
      font-weight: 950;
      letter-spacing: -.6px;
    }

    .data-badge {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-width: 78px;
      padding: 10px 12px;
      border-radius: 20px;
      background: linear-gradient(135deg, rgba(109, 93, 252, .12), rgba(16, 184, 166, .13));
      border: 1px solid rgba(109, 93, 252, .15);
    }

    .data-badge strong {
      font-size: 24px;
      line-height: 1;
      color: var(--primary-dark);
    }

    .data-badge span {
      margin-top: 4px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 800;
    }

    .cover-stack {
      margin-top: 24px;
      display: grid;
      gap: 14px;
    }

    .cover-item {
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .78);
      border: 1px solid var(--border);
      box-shadow: 0 8px 24px rgba(36, 45, 84, .06);
    }

    .cover-item strong {
      display: block;
      margin-bottom: 6px;
      font-size: 16px;
    }

    .cover-item p {
      color: var(--muted);
      font-size: 14px;
    }

    .cover-meter {
      margin-top: 24px;
      padding: 18px;
      border-radius: 24px;
      background: #172033;
      color: #fff;
    }

    .meter-head {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      font-size: 13px;
      font-weight: 900;
      color: rgba(255, 255, 255, .78);
    }

    .meter-bar {
      height: 10px;
      margin-top: 12px;
      border-radius: 999px;
      overflow: hidden;
      background: rgba(255, 255, 255, .16);
    }

    .meter-bar span {
      display: block;
      width: 88%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--secondary), #fff176, var(--accent));
    }

    .summary-strip {
      margin-top: 22px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }

    .summary-card {
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .82);
      border: 1px solid rgba(109, 93, 252, .12);
      box-shadow: var(--shadow-soft);
    }

    .summary-card strong {
      display: block;
      font-size: 24px;
      line-height: 1.1;
      color: var(--primary-dark);
    }

    .summary-card span {
      display: block;
      margin-top: 7px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 28px;
    }

    .section-title {
      max-width: 720px;
    }

    .section-title h2 {
      margin-top: 12px;
      font-size: clamp(28px, 3.5vw, 44px);
      line-height: 1.15;
      letter-spacing: -1.2px;
    }

    .section-title p {
      margin-top: 12px;
      color: var(--muted);
      font-size: 17px;
      max-width: 780px;
    }

    .small-note {
      color: var(--muted);
      font-size: 14px;
      max-width: 320px;
      padding: 14px 16px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid var(--border);
    }

    .directory-layout {
      display: grid;
      grid-template-columns: 300px minmax(0, 1fr);
      gap: 24px;
      align-items: start;
    }

    .toc-card {
      position: sticky;
      top: 150px;
      padding: 20px;
      border-radius: 26px;
      background: var(--surface);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-soft);
    }

    .toc-card h3 {
      font-size: 18px;
      margin-bottom: 14px;
    }

    .toc-list {
      display: grid;
      gap: 10px;
      list-style: none;
    }

    .toc-link {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
      padding: 12px 14px;
      border-radius: 16px;
      color: var(--muted);
      background: #f7f8ff;
      border: 1px solid transparent;
      font-weight: 800;
      font-size: 14px;
    }

    .toc-link:hover {
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .08);
      border-color: rgba(109, 93, 252, .14);
      transform: translateX(2px);
    }

    .toc-link span {
      color: var(--weak);
      font-size: 12px;
      font-weight: 900;
    }

    .directory-main {
      display: grid;
      gap: 18px;
    }

    .feature-row {
      display: grid;
      grid-template-columns: 86px 1fr auto;
      gap: 20px;
      align-items: center;
      padding: 22px;
      border-radius: 28px;
      background: rgba(255, 255, 255, .88);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-soft);
      transition: var(--ease);
    }

    .feature-row:hover {
      transform: translateY(-3px);
      border-color: rgba(109, 93, 252, .25);
      box-shadow: var(--shadow);
    }

    .feature-icon {
      width: 70px;
      height: 70px;
      border-radius: 24px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      background: linear-gradient(135deg, rgba(109, 93, 252, .14), rgba(16, 184, 166, .14));
      border: 1px solid rgba(109, 93, 252, .14);
    }

    .feature-row h3 {
      font-size: 20px;
      letter-spacing: -.4px;
      margin-bottom: 5px;
    }

    .feature-row p {
      color: var(--muted);
      font-size: 15px;
    }

    .tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 12px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 5px 10px;
      border-radius: 999px;
      background: rgba(109, 93, 252, .08);
      color: var(--primary-dark);
      font-size: 12px;
      font-weight: 900;
      border: 1px solid rgba(109, 93, 252, .12);
    }

    .row-badge {
      min-width: 96px;
      text-align: center;
      padding: 9px 12px;
      border-radius: 999px;
      color: #08796e;
      background: rgba(16, 184, 166, .11);
      border: 1px solid rgba(16, 184, 166, .18);
      font-weight: 900;
      font-size: 13px;
    }

    .highlight-zone {
      border-radius: 34px;
      padding: 30px;
      background:
        linear-gradient(180deg, rgba(255, 255, 255, .88), rgba(255, 255, 255, .72)),
        radial-gradient(circle at 0% 0%, rgba(109, 93, 252, .12), transparent 42%);
      border: 1px solid rgba(109, 93, 252, .14);
      box-shadow: var(--shadow-soft);
    }

    .picked-layout {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 22px;
      margin-top: 22px;
    }

    .picked-main {
      position: relative;
      min-height: 380px;
      overflow: hidden;
      padding: 30px;
      border-radius: 30px;
      background:
        linear-gradient(135deg, rgba(23, 32, 51, .96), rgba(55, 48, 124, .94)),
        radial-gradient(circle at 82% 22%, rgba(239, 93, 168, .28), transparent 36%);
      color: #fff;
    }

    .picked-main::after {
      content: "";
      position: absolute;
      right: -80px;
      bottom: -90px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(16, 184, 166, .55), rgba(109, 93, 252, .12));
    }

    .picked-main > * {
      position: relative;
      z-index: 1;
    }

    .picked-main h3 {
      margin-top: 18px;
      max-width: 520px;
      font-size: clamp(26px, 3vw, 42px);
      line-height: 1.18;
      letter-spacing: -1px;
    }

    .picked-main p {
      margin-top: 14px;
      max-width: 600px;
      color: rgba(255, 255, 255, .78);
    }

    .picked-meta {
      margin-top: 28px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .meta-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 13px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .12);
      border: 1px solid rgba(255, 255, 255, .18);
      color: rgba(255, 255, 255, .88);
      font-size: 13px;
      font-weight: 800;
    }

    .picked-side {
      display: grid;
      gap: 16px;
    }

    .mini-card {
      padding: 22px;
      border-radius: 26px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: 0 10px 28px rgba(36, 45, 84, .07);
      transition: var(--ease);
    }

    .mini-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-soft);
    }

    .mini-card h3 {
      font-size: 19px;
      margin-bottom: 8px;
    }

    .mini-card p {
      color: var(--muted);
      font-size: 15px;
    }

    .process-grid {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 24px;
      align-items: stretch;
    }

    .process-note {
      padding: 30px;
      border-radius: 30px;
      background: linear-gradient(135deg, rgba(109, 93, 252, .13), rgba(16, 184, 166, .12));
      border: 1px solid rgba(109, 93, 252, .15);
    }

    .process-note h2 {
      font-size: 32px;
      line-height: 1.2;
      letter-spacing: -1px;
      margin-top: 14px;
    }

    .process-note p {
      margin-top: 14px;
      color: var(--muted);
    }

    .steps {
      display: grid;
      gap: 14px;
    }

    .step-card {
      display: grid;
      grid-template-columns: 50px 1fr;
      gap: 16px;
      padding: 20px;
      border-radius: 24px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: 0 10px 28px rgba(36, 45, 84, .06);
    }

    .step-num {
      width: 50px;
      height: 50px;
      border-radius: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 950;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 12px 24px rgba(109, 93, 252, .22);
    }

    .step-card h3 {
      font-size: 18px;
      margin-bottom: 5px;
    }

    .step-card p {
      color: var(--muted);
      font-size: 15px;
    }

    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .related-card {
      position: relative;
      min-height: 260px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 24px;
      border-radius: 30px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      transition: var(--ease);
    }

    .related-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 90% 0%, rgba(109, 93, 252, .12), transparent 38%);
      pointer-events: none;
    }

    .related-card:hover {
      transform: translateY(-4px);
      border-color: rgba(109, 93, 252, .23);
      box-shadow: var(--shadow);
    }

    .related-card > * {
      position: relative;
      z-index: 1;
    }

    .related-card h3 {
      margin-top: 18px;
      font-size: 22px;
      letter-spacing: -.5px;
    }

    .related-card p {
      margin-top: 9px;
      color: var(--muted);
      font-size: 15px;
    }

    .related-link {
      margin-top: 22px;
      color: var(--primary-dark);
      font-weight: 950;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .related-link:hover {
      gap: 10px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 26px;
      align-items: start;
    }

    .faq-intro {
      padding: 28px;
      border-radius: 30px;
      background: #172033;
      color: #fff;
      box-shadow: var(--shadow);
    }

    .faq-intro h2 {
      margin-top: 14px;
      font-size: 34px;
      line-height: 1.15;
      letter-spacing: -1px;
    }

    .faq-intro p {
      margin-top: 12px;
      color: rgba(255, 255, 255, .75);
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      padding: 22px 24px;
      border-radius: 24px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: 0 10px 26px rgba(36, 45, 84, .06);
    }

    .faq-item h3 {
      font-size: 18px;
      line-height: 1.45;
      margin-bottom: 8px;
    }

    .faq-item p {
      color: var(--muted);
      font-size: 15px;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      border-radius: 36px;
      padding: 42px;
      background:
        linear-gradient(135deg, rgba(109, 93, 252, .95), rgba(16, 184, 166, .90)),
        radial-gradient(circle at 85% 10%, rgba(255, 255, 255, .25), transparent 30%);
      color: #fff;
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 28px;
      align-items: center;
    }

    .cta-panel::after {
      content: "";
      position: absolute;
      right: -120px;
      bottom: -160px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .14);
    }

    .cta-panel > * {
      position: relative;
      z-index: 1;
    }

    .cta-panel h2 {
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.12;
      letter-spacing: -1.2px;
    }

    .cta-panel p {
      margin-top: 14px;
      color: rgba(255, 255, 255, .82);
      max-width: 680px;
    }

    .share-box {
      padding: 22px;
      border-radius: 28px;
      background: rgba(255, 255, 255, .16);
      border: 1px solid rgba(255, 255, 255, .24);
      backdrop-filter: blur(12px);
    }

    .share-box strong {
      display: block;
      font-size: 18px;
      margin-bottom: 12px;
    }

    .share-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .share-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 9px 13px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .16);
      border: 1px solid rgba(255, 255, 255, .24);
      color: #fff;
      font-weight: 900;
      font-size: 13px;
      transition: var(--ease);
    }

    .share-btn:hover {
      background: rgba(255, 255, 255, .25);
      transform: translateY(-1px);
    }

    .site-footer {
      padding: 54px 0 28px;
      background: #101827;
      color: #dbe4f5;
      margin-top: 62px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr .8fr .8fr;
      gap: 34px;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255, 255, 255, .10);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 18px;
      font-weight: 950;
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-text {
      max-width: 540px;
      color: rgba(219, 228, 245, .72);
      font-size: 15px;
    }

    .footer-col h3 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-link {
      color: rgba(219, 228, 245, .72);
      font-size: 14px;
      width: fit-content;
    }

    .footer-link:hover {
      color: #fff;
      transform: translateX(2px);
    }

    .copyright {
      padding-top: 22px;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      color: rgba(219, 228, 245, .58);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .topbar {
        grid-template-columns: 1fr auto;
      }

      .search-wrap {
        grid-column: 1 / -1;
        order: 3;
      }

      .hero-card,
      .picked-layout,
      .process-grid,
      .faq-wrap,
      .cta-panel {
        grid-template-columns: 1fr;
      }

      .hero-copy {
        padding: 44px 38px 10px;
      }

      .cover-panel {
        margin: 0 28px 28px;
      }

      .summary-strip {
        grid-template-columns: repeat(2, 1fr);
      }

      .directory-layout {
        grid-template-columns: 1fr;
      }

      .toc-card {
        position: static;
      }

      .related-grid {
        grid-template-columns: 1fr 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }

      .footer-grid > div:first-child {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .site-header {
        position: relative;
      }

      .topbar {
        min-height: auto;
        padding: 16px 0 12px;
        grid-template-columns: 1fr;
        gap: 14px;
      }

      .brand {
        min-width: 0;
      }

      .brand-text strong {
        white-space: normal;
        font-size: 16px;
      }

      .header-actions {
        width: 100%;
      }

      .header-actions .btn {
        flex: 1;
      }

      .channel-row {
        padding-bottom: 12px;
      }

      .page-hero {
        padding-top: 28px;
      }

      .hero-card {
        border-radius: 28px;
      }

      .hero-copy {
        padding: 34px 24px 4px;
      }

      h1 {
        letter-spacing: -1.4px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .cover-panel {
        margin: 0 14px 14px;
        padding: 18px;
        border-radius: 24px;
      }

      .summary-strip {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
      }

      .summary-card {
        padding: 15px;
      }

      .section {
        padding: 52px 0;
      }

      .section-head {
        display: block;
      }

      .small-note {
        margin-top: 16px;
        max-width: none;
      }

      .feature-row {
        grid-template-columns: 1fr;
        gap: 14px;
      }

      .feature-icon {
        width: 60px;
        height: 60px;
        border-radius: 20px;
      }

      .row-badge {
        width: fit-content;
      }

      .highlight-zone,
      .cta-panel {
        padding: 22px;
        border-radius: 28px;
      }

      .related-grid {
        grid-template-columns: 1fr;
      }

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .brand-mark {
        width: 40px;
        height: 40px;
        flex-basis: 40px;
        border-radius: 14px;
        font-size: 20px;
      }

      .header-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }

      .hero-actions {
        flex-direction: column;
      }

      .summary-strip {
        grid-template-columns: 1fr;
      }

      .cover-top {
        flex-direction: column;
      }

      .picked-main {
        min-height: 330px;
        padding: 22px;
        border-radius: 24px;
      }

      .step-card {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .share-actions {
        flex-direction: column;
      }

      .share-btn {
        width: 100%;
      }
    }

/* roulang page: category2 */
:root {
      --primary: #6d5dfc;
      --primary-dark: #4b3ce7;
      --primary-soft: #efeefe;
      --secondary: #12c7b8;
      --accent: #ff8a3d;
      --bg: #f7f8fc;
      --bg-strong: #eef2ff;
      --surface: #ffffff;
      --surface-2: #fbfcff;
      --text: #182033;
      --text-soft: #5d667c;
      --muted: #8992a8;
      --border: #e4e8f3;
      --border-strong: #cfd6e9;
      --shadow-sm: 0 8px 24px rgba(30, 41, 59, .08);
      --shadow-md: 0 18px 48px rgba(40, 52, 88, .14);
      --shadow-lg: 0 30px 80px rgba(40, 52, 88, .18);
      --radius-sm: 12px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --container: 1180px;
      --header-h: 148px;
      --ease: all .22s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      min-height: 100vh;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      line-height: 1.7;
      background:
        radial-gradient(circle at 8% 0%, rgba(109, 93, 252, .16), transparent 28%),
        radial-gradient(circle at 88% 8%, rgba(18, 199, 184, .13), transparent 30%),
        linear-gradient(180deg, #fbfcff 0%, var(--bg) 44%, #fff 100%);
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ease);
    }

    img {
      max-width: 100%;
      display: block;
    }

    button,
    input {
      font: inherit;
    }

    input,
    button,
    a {
      -webkit-tap-highlight-color: transparent;
    }

    input:focus,
    button:focus,
    a:focus-visible {
      outline: 3px solid rgba(109, 93, 252, .26);
      outline-offset: 3px;
      border-radius: 12px;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, .9);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(228, 232, 243, .9);
      box-shadow: 0 12px 40px rgba(22, 30, 55, .06);
    }

    .topbar {
      display: grid;
      grid-template-columns: auto minmax(240px, 1fr) auto;
      gap: 22px;
      align-items: center;
      padding: 18px 0 14px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 258px;
    }

    .brand:hover {
      transform: translateY(-1px);
    }

    .brand-mark {
      width: 46px;
      height: 46px;
      flex: 0 0 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 22px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--primary), #8b5cf6 46%, var(--secondary));
      box-shadow: 0 14px 32px rgba(109, 93, 252, .32);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .brand-text strong {
      font-size: 18px;
      letter-spacing: -.2px;
      white-space: nowrap;
    }

    .brand-text span {
      margin-top: 5px;
      color: var(--muted);
      font-size: 12px;
    }

    .search-wrap {
      position: relative;
      display: flex;
      align-items: center;
      min-width: 0;
    }

    .search-icon {
      position: absolute;
      left: 16px;
      color: var(--muted);
      font-size: 20px;
      z-index: 1;
    }

    .search-wrap input {
      width: 100%;
      height: 46px;
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 0 18px 0 46px;
      color: var(--text);
      background: var(--surface-2);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .8);
      transition: var(--ease);
    }

    .search-wrap input::placeholder {
      color: #9aa3b6;
    }

    .search-wrap input:hover,
    .search-wrap input:focus {
      border-color: rgba(109, 93, 252, .44);
      background: #fff;
      box-shadow: 0 10px 26px rgba(109, 93, 252, .08);
    }

    .header-actions {
      display: flex;
      gap: 10px;
      align-items: center;
      justify-content: flex-end;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 0 18px;
      border-radius: 999px;
      font-weight: 800;
      font-size: 14px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--ease);
      white-space: nowrap;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #8b5cf6);
      box-shadow: 0 14px 30px rgba(109, 93, 252, .28);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 20px 42px rgba(109, 93, 252, .36);
    }

    .btn-line {
      color: var(--primary-dark);
      background: #fff;
      border-color: rgba(109, 93, 252, .22);
      box-shadow: 0 8px 18px rgba(109, 93, 252, .08);
    }

    .btn-line:hover {
      color: #fff;
      background: var(--primary);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .btn-soft {
      color: var(--primary-dark);
      background: var(--primary-soft);
      border-color: rgba(109, 93, 252, .12);
    }

    .btn-soft:hover {
      background: #e5e2ff;
      transform: translateY(-2px);
    }

    .channel-row {
      padding: 0 0 14px;
      overflow-x: auto;
      scrollbar-width: thin;
      scrollbar-color: rgba(109, 93, 252, .35) transparent;
    }

    .channel-tabs {
      display: flex;
      gap: 10px;
      align-items: center;
      min-width: max-content;
    }

    .nav-tab {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 0 18px;
      color: var(--text-soft);
      font-size: 14px;
      font-weight: 800;
      border-radius: 999px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid transparent;
    }

    .nav-tab:hover {
      color: var(--primary-dark);
      background: var(--primary-soft);
      border-color: rgba(109, 93, 252, .14);
    }

    .nav-tab.active {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 12px 26px rgba(109, 93, 252, .24);
    }

    main {
      display: block;
    }

    .section {
      padding: 76px 0;
    }

    .section-tight {
      padding: 54px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 900;
      background: rgba(109, 93, 252, .1);
      border: 1px solid rgba(109, 93, 252, .16);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      color: var(--text-soft);
      font-size: 12px;
      font-weight: 800;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: #fff;
    }

    .badge.hot {
      color: #9a4a00;
      background: rgba(255, 138, 61, .12);
      border-color: rgba(255, 138, 61, .28);
    }

    .hero {
      position: relative;
      padding: 64px 0 46px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 24px auto auto 50%;
      width: 520px;
      height: 520px;
      transform: translateX(-8%);
      border-radius: 50%;
      background: radial-gradient(circle, rgba(109, 93, 252, .16), transparent 66%);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, .92fr) minmax(390px, 1.08fr);
      gap: 34px;
      align-items: center;
    }

    .hero-copy {
      padding: 18px 0;
    }

    h1 {
      margin-top: 18px;
      font-size: clamp(34px, 5vw, 62px);
      line-height: 1.08;
      letter-spacing: -1.8px;
      color: var(--text);
    }

    .hero-lead {
      max-width: 640px;
      margin-top: 22px;
      color: var(--text-soft);
      font-size: 18px;
      line-height: 1.85;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
    }

    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .compare-shell {
      position: relative;
      display: grid;
      grid-template-columns: .82fr 1fr;
      gap: 16px;
      align-items: stretch;
    }

    .option-card {
      position: relative;
      min-height: 330px;
      padding: 24px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .86);
      border: 1px solid rgba(228, 232, 243, .92);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .option-card::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -80px;
      width: 190px;
      height: 190px;
      border-radius: 999px;
      background: rgba(109, 93, 252, .08);
    }

    .option-card.recommended {
      min-height: 390px;
      padding: 28px;
      color: #fff;
      background:
        radial-gradient(circle at 86% 0%, rgba(18, 199, 184, .52), transparent 38%),
        linear-gradient(145deg, #6052f3 0%, #7c3aed 52%, #1bb8c9 100%);
      border: 1px solid rgba(255, 255, 255, .38);
      box-shadow: var(--shadow-lg);
      transform: translateY(-18px);
    }

    .option-card.recommended::after {
      background: rgba(255, 255, 255, .14);
    }

    .option-top {
      position: relative;
      z-index: 1;
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 12px;
    }

    .option-title {
      font-size: 20px;
      font-weight: 900;
    }

    .option-desc {
      position: relative;
      z-index: 1;
      margin-top: 12px;
      color: var(--text-soft);
      font-size: 14px;
    }

    .recommended .option-desc {
      color: rgba(255, 255, 255, .84);
    }

    .score {
      position: relative;
      z-index: 1;
      margin-top: 24px;
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score strong {
      font-size: 54px;
      line-height: 1;
      letter-spacing: -1.8px;
    }

    .score span {
      color: var(--muted);
      font-weight: 800;
    }

    .recommended .score span {
      color: rgba(255, 255, 255, .75);
    }

    .option-list {
      position: relative;
      z-index: 1;
      margin-top: 22px;
      display: grid;
      gap: 12px;
      list-style: none;
    }

    .option-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: var(--text-soft);
      font-size: 14px;
    }

    .recommended .option-list li {
      color: rgba(255, 255, 255, .9);
    }

    .check {
      width: 20px;
      height: 20px;
      flex: 0 0 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-top: 2px;
      border-radius: 50%;
      color: #fff;
      font-size: 12px;
      font-weight: 900;
      background: var(--secondary);
    }

    .recommended .check {
      color: var(--primary-dark);
      background: #fff;
    }

    .open-btn {
      position: relative;
      z-index: 1;
      width: 100%;
      margin-top: 28px;
      color: var(--primary-dark);
      background: #fff;
      box-shadow: 0 16px 36px rgba(14, 22, 46, .18);
    }

    .open-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 22px 44px rgba(14, 22, 46, .24);
    }

    .panel {
      border-radius: var(--radius-xl);
      background: rgba(255, 255, 255, .72);
      border: 1px solid rgba(228, 232, 243, .86);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .topic-cover {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 0;
      align-items: stretch;
    }

    .cover-visual {
      position: relative;
      min-height: 420px;
      padding: 28px;
      background:
        linear-gradient(135deg, rgba(109, 93, 252, .92), rgba(18, 199, 184, .82)),
        radial-gradient(circle at 0% 0%, rgba(255, 255, 255, .34), transparent 42%);
      overflow: hidden;
    }

    .cover-visual::before,
    .cover-visual::after {
      content: "";
      position: absolute;
      border-radius: 999px;
      background: rgba(255, 255, 255, .14);
    }

    .cover-visual::before {
      width: 210px;
      height: 210px;
      right: -64px;
      top: -58px;
    }

    .cover-visual::after {
      width: 280px;
      height: 280px;
      left: -105px;
      bottom: -118px;
    }

    .cover-card {
      position: relative;
      z-index: 1;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      color: #fff;
    }

    .cover-card h2 {
      max-width: 430px;
      margin-top: 18px;
      font-size: clamp(28px, 3.2vw, 42px);
      line-height: 1.18;
      letter-spacing: -.9px;
    }

    .cover-card p {
      max-width: 420px;
      margin-top: 14px;
      color: rgba(255, 255, 255, .84);
    }

    .cover-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 28px;
    }

    .data-badge {
      padding: 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .22);
      backdrop-filter: blur(10px);
    }

    .data-badge strong {
      display: block;
      font-size: 24px;
      line-height: 1;
    }

    .data-badge span {
      display: block;
      margin-top: 8px;
      color: rgba(255, 255, 255, .78);
      font-size: 12px;
    }

    .directory {
      padding: 34px;
      background: #fff;
    }

    .directory h2,
    .section-title {
      font-size: clamp(26px, 3.3vw, 42px);
      line-height: 1.22;
      letter-spacing: -.8px;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      gap: 24px;
      align-items: flex-end;
      margin-bottom: 30px;
    }

    .section-head p {
      max-width: 620px;
      color: var(--text-soft);
      margin-top: 12px;
    }

    .toc-list {
      margin-top: 26px;
      display: grid;
      gap: 14px;
      list-style: none;
    }

    .toc-item a {
      display: grid;
      grid-template-columns: 44px 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px;
      border: 1px solid var(--border);
      border-radius: 20px;
      background: var(--surface-2);
    }

    .toc-item a:hover {
      border-color: rgba(109, 93, 252, .28);
      background: #fff;
      box-shadow: var(--shadow-sm);
      transform: translateX(4px);
    }

    .toc-num {
      width: 44px;
      height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      font-weight: 900;
      border-radius: 15px;
      background: var(--primary-soft);
    }

    .toc-copy strong {
      display: block;
      font-size: 16px;
    }

    .toc-copy span {
      display: block;
      margin-top: 3px;
      color: var(--muted);
      font-size: 13px;
    }

    .arrow {
      color: var(--primary);
      font-size: 20px;
      font-weight: 900;
    }

    .feature-layout {
      display: grid;
      grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
      gap: 24px;
      align-items: start;
    }

    .sticky-note {
      position: sticky;
      top: calc(var(--header-h) + 24px);
      padding: 28px;
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, #fff, #f8f9ff);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .sticky-note p {
      margin-top: 12px;
      color: var(--text-soft);
    }

    .mini-metrics {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-top: 22px;
    }

    .mini-metric {
      padding: 14px;
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--border);
    }

    .mini-metric strong {
      display: block;
      color: var(--primary-dark);
      font-size: 22px;
      line-height: 1.1;
    }

    .mini-metric span {
      display: block;
      margin-top: 7px;
      color: var(--muted);
      font-size: 12px;
    }

    .entries {
      display: grid;
      gap: 16px;
    }

    .entry-card {
      display: grid;
      grid-template-columns: 74px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 22px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: 0 8px 22px rgba(30, 41, 59, .05);
      transition: var(--ease);
    }

    .entry-card:hover {
      transform: translateY(-4px);
      border-color: rgba(109, 93, 252, .26);
      box-shadow: var(--shadow-md);
    }

    .entry-icon {
      width: 74px;
      height: 74px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 28px;
      font-weight: 900;
      border-radius: 24px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 14px 28px rgba(109, 93, 252, .22);
    }

    .entry-main h3 {
      font-size: 20px;
      line-height: 1.28;
    }

    .entry-main p {
      margin-top: 8px;
      color: var(--text-soft);
      font-size: 14px;
    }

    .entry-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 13px;
    }

    .entry-action {
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: 10px;
      min-width: 138px;
    }

    .rank {
      color: var(--accent);
      font-size: 13px;
      font-weight: 900;
    }

    .process {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 24px;
      align-items: stretch;
    }

    .steps {
      display: grid;
      gap: 14px;
      list-style: none;
    }

    .step {
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 16px;
      padding: 20px;
      border-radius: 22px;
      background: #fff;
      border: 1px solid var(--border);
      transition: var(--ease);
    }

    .step:hover {
      border-color: rgba(18, 199, 184, .34);
      transform: translateY(-3px);
      box-shadow: var(--shadow-sm);
    }

    .step-index {
      width: 48px;
      height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      border-radius: 17px;
      background: linear-gradient(135deg, var(--secondary), var(--primary));
    }

    .step h3 {
      font-size: 18px;
      margin-bottom: 5px;
    }

    .step p {
      color: var(--text-soft);
      font-size: 14px;
    }

    .quote-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 100%;
      padding: 30px;
      color: #fff;
      border-radius: var(--radius-lg);
      background:
        radial-gradient(circle at 88% 12%, rgba(255, 255, 255, .2), transparent 28%),
        linear-gradient(145deg, #172033, #2d2a72 58%, #0f9ea1);
      box-shadow: var(--shadow-md);
    }

    .quote-card blockquote {
      font-size: 22px;
      line-height: 1.65;
      font-weight: 800;
    }

    .quote-card p {
      margin-top: 18px;
      color: rgba(255, 255, 255, .76);
    }

    .related-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 20px;
    }

    .related-card {
      position: relative;
      padding: 28px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: var(--ease);
    }

    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(109, 93, 252, .24);
    }

    .related-card.large {
      min-height: 278px;
      color: #fff;
      background:
        radial-gradient(circle at 92% 0%, rgba(255, 255, 255, .24), transparent 32%),
        linear-gradient(135deg, var(--primary), #7c3aed 54%, var(--secondary));
      border-color: rgba(255, 255, 255, .28);
    }

    .related-card h3 {
      position: relative;
      z-index: 1;
      margin-top: 16px;
      font-size: 24px;
      line-height: 1.25;
    }

    .related-card p {
      position: relative;
      z-index: 1;
      margin-top: 12px;
      color: var(--text-soft);
    }

    .related-card.large p {
      color: rgba(255, 255, 255, .82);
    }

    .related-stack {
      display: grid;
      gap: 20px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .7fr 1.3fr;
      gap: 28px;
      align-items: start;
    }

    .faq-intro {
      padding: 28px;
      border-radius: var(--radius-lg);
      background: var(--primary-soft);
      border: 1px solid rgba(109, 93, 252, .14);
    }

    .faq-intro p {
      margin-top: 12px;
      color: var(--text-soft);
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--border);
      border-radius: 22px;
      background: #fff;
      box-shadow: 0 8px 22px rgba(30, 41, 59, .04);
      overflow: hidden;
    }

    .faq-item summary {
      cursor: pointer;
      list-style: none;
      padding: 20px 22px;
      font-weight: 900;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: center;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      flex: 0 0 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      border-radius: 50%;
      background: var(--primary-soft);
      font-size: 20px;
      line-height: 1;
      transition: var(--ease);
    }

    .faq-item[open] summary::after {
      content: "−";
      transform: rotate(180deg);
    }

    .faq-item p {
      padding: 0 22px 22px;
      color: var(--text-soft);
    }

    .cta {
      padding: 0 0 82px;
    }

    .cta-box {
      position: relative;
      overflow: hidden;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
      padding: 36px;
      color: #fff;
      border-radius: var(--radius-xl);
      background:
        radial-gradient(circle at 90% 10%, rgba(255, 255, 255, .22), transparent 30%),
        linear-gradient(135deg, #141c2f, #4b3ce7 50%, #12c7b8);
      box-shadow: var(--shadow-lg);
    }

    .cta-box::before {
      content: "";
      position: absolute;
      inset: auto -90px -120px auto;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .12);
    }

    .cta-box h2 {
      position: relative;
      z-index: 1;
      font-size: clamp(26px, 3vw, 40px);
      line-height: 1.22;
    }

    .cta-box p {
      position: relative;
      z-index: 1;
      max-width: 760px;
      margin-top: 12px;
      color: rgba(255, 255, 255, .8);
    }

    .cta-actions {
      position: relative;
      z-index: 1;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .cta-actions .btn-line {
      color: #fff;
      background: rgba(255, 255, 255, .12);
      border-color: rgba(255, 255, 255, .32);
      box-shadow: none;
    }

    .cta-actions .btn-line:hover {
      background: rgba(255, 255, 255, .2);
    }

    .site-footer {
      padding: 58px 0 28px;
      color: rgba(255, 255, 255, .82);
      background: #111827;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) .58fr .58fr;
      gap: 36px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 18px;
      font-weight: 900;
    }

    .footer-text {
      max-width: 520px;
      margin-top: 16px;
      color: rgba(255, 255, 255, .66);
    }

    .footer-col h3 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-link {
      color: rgba(255, 255, 255, .66);
      font-size: 14px;
    }

    .footer-link:hover {
      color: #fff;
      transform: translateX(4px);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      margin-top: 42px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, .12);
      color: rgba(255, 255, 255, .52);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      :root {
        --header-h: 188px;
      }

      .topbar {
        grid-template-columns: 1fr auto;
      }

      .search-wrap {
        grid-column: 1 / -1;
        order: 3;
      }

      .hero-grid,
      .topic-cover,
      .feature-layout,
      .process,
      .related-grid,
      .faq-wrap {
        grid-template-columns: 1fr;
      }

      .compare-shell {
        max-width: 760px;
      }

      .sticky-note {
        position: relative;
        top: auto;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }

      .footer-grid > div:first-child {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .site-header {
        position: sticky;
      }

      .topbar {
        grid-template-columns: 1fr;
        gap: 14px;
        padding-top: 14px;
      }

      .brand {
        min-width: 0;
      }

      .brand-text strong {
        font-size: 16px;
      }

      .header-actions {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 2px;
      }

      .channel-row {
        margin: 0 -14px;
        padding-left: 14px;
        padding-right: 14px;
      }

      .hero {
        padding-top: 42px;
      }

      .hero-grid {
        gap: 26px;
      }

      .compare-shell {
        grid-template-columns: 1fr;
      }

      .option-card.recommended {
        transform: none;
        order: -1;
      }

      .section,
      .section-tight {
        padding: 52px 0;
      }

      .section-head {
        display: block;
      }

      .cover-visual {
        min-height: auto;
      }

      .cover-stats,
      .mini-metrics {
        grid-template-columns: 1fr;
      }

      .entry-card {
        grid-template-columns: 58px 1fr;
      }

      .entry-icon {
        width: 58px;
        height: 58px;
        border-radius: 19px;
        font-size: 22px;
      }

      .entry-action {
        grid-column: 1 / -1;
        align-items: flex-start;
        min-width: 0;
      }

      .cta-box {
        grid-template-columns: 1fr;
        padding: 28px;
      }

      .cta-actions {
        justify-content: flex-start;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      h1 {
        letter-spacing: -1px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .btn {
        width: 100%;
      }

      .hero-actions,
      .cta-actions {
        width: 100%;
      }

      .header-actions .btn {
        width: auto;
      }

      .toc-item a {
        grid-template-columns: 38px 1fr;
      }

      .toc-num {
        width: 38px;
        height: 38px;
      }

      .toc-item .arrow {
        display: none;
      }

      .directory,
      .sticky-note,
      .related-card,
      .faq-intro {
        padding: 22px;
      }

      .entry-card {
        padding: 18px;
        gap: 14px;
      }

      .step {
        grid-template-columns: 1fr;
      }

      .quote-card blockquote {
        font-size: 19px;
      }
    }