/* roulang page: index */
:root{
      --bg:#050816;
      --bg-2:#07111f;
      --panel:rgba(15,23,42,.66);
      --panel-strong:rgba(8,18,34,.82);
      --panel-soft:rgba(15,23,42,.48);
      --line:rgba(125,211,252,.18);
      --line-strong:rgba(34,211,238,.42);
      --text:#f8fafc;
      --muted:#cbd5e1;
      --weak:#94a3b8;
      --cyan:#22d3ee;
      --blue:#38bdf8;
      --indigo:#6366f1;
      --violet:#8b5cf6;
      --amber:#f59e0b;
      --green:#2dd4bf;
      --danger:#fb7185;
      --radius-lg:28px;
      --radius:20px;
      --radius-sm:14px;
      --shadow:0 24px 90px rgba(0,0,0,.38);
      --glow:0 0 0 1px rgba(34,211,238,.18),0 20px 80px rgba(34,211,238,.12);
      --container:1200px;
      --ease:all .24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 16% 10%,rgba(34,211,238,.22),transparent 28%),
        radial-gradient(circle at 84% 18%,rgba(99,102,241,.22),transparent 30%),
        radial-gradient(circle at 50% 80%,rgba(139,92,246,.16),transparent 34%),
        linear-gradient(180deg,#050816 0%,#07111f 45%,#050816 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      background:
        linear-gradient(rgba(125,211,252,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(125,211,252,.035) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,.22));
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      background:repeating-linear-gradient(180deg,rgba(255,255,255,.025) 0,rgba(255,255,255,.025) 1px,transparent 1px,transparent 7px);
      opacity:.22;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(34,211,238,.28);color:#fff}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:fixed;
      top:14px;
      left:0;
      right:0;
      z-index:50;
      transition:var(--ease);
    }
    .nav-shell{
      width:min(var(--container),calc(100% - 28px));
      margin:0 auto;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(5,8,22,.58);
      backdrop-filter:blur(18px);
      box-shadow:0 16px 60px rgba(0,0,0,.24);
      padding:10px 12px 10px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .site-header.is-scrolled .nav-shell{
      background:rgba(5,8,22,.88);
      border-color:rgba(125,211,252,.3);
      box-shadow:0 18px 70px rgba(0,0,0,.4);
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:0;
      font-weight:900;
      letter-spacing:.01em;
      white-space:nowrap;
    }
    .brand-mark{
      width:34px;
      height:34px;
      border-radius:11px;
      position:relative;
      flex:0 0 auto;
      background:linear-gradient(135deg,rgba(34,211,238,.22),rgba(99,102,241,.2));
      border:1px solid rgba(34,211,238,.45);
      box-shadow:0 0 26px rgba(34,211,238,.28);
      overflow:hidden;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      inset:7px;
      border:2px solid rgba(248,250,252,.82);
      clip-path:polygon(0 0,78% 0,100% 22%,100% 100%,22% 100%,0 78%);
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      left:7px;
      right:7px;
      bottom:6px;
      height:3px;
      border-radius:999px;
      background:linear-gradient(90deg,var(--cyan),var(--violet));
    }
    .brand-text{
      max-width:310px;
      overflow:hidden;
      text-overflow:ellipsis;
      background:linear-gradient(90deg,#fff,#a5f3fc 55%,#c4b5fd);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
      font-size:15px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      color:#e2e8f0;
      font-size:14px;
    }
    .nav-links a{
      position:relative;
      padding:9px 14px;
      border-radius:999px;
      color:#e2e8f0;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a:focus-visible{
      color:#67e8f9;
      background:rgba(34,211,238,.08);
      outline:none;
    }
    .nav-links a.active{
      color:#fff;
      background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(99,102,241,.18));
      box-shadow:inset 0 0 0 1px rgba(125,211,252,.22);
    }
    .nav-actions{display:flex;align-items:center;gap:10px}
    .nav-search{
      width:210px;
      display:flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border:1px solid rgba(125,211,252,.18);
      border-radius:999px;
      background:rgba(15,23,42,.48);
      color:var(--weak);
    }
    .nav-search input{
      width:100%;
      border:0;
      outline:0;
      background:transparent;
      color:var(--text);
      font-size:13px;
    }
    .nav-search input::placeholder{color:#64748b}
    .menu-toggle{
      display:none;
      width:42px;
      height:42px;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(15,23,42,.5);
      color:#fff;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      border:0;
      border-radius:999px;
      padding:12px 18px;
      color:#fff;
      font-weight:800;
      line-height:1;
      transition:var(--ease);
      white-space:nowrap;
      min-height:44px;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--cyan),var(--indigo) 62%,var(--violet));
      box-shadow:0 0 28px rgba(34,211,238,.25),0 14px 42px rgba(99,102,241,.22);
    }
    .btn-primary:hover,.btn-primary:focus-visible{
      transform:translateY(-2px);
      box-shadow:0 0 38px rgba(34,211,238,.34),0 18px 52px rgba(99,102,241,.28);
      outline:none;
    }
    .btn-secondary{
      border:1px solid rgba(125,211,252,.32);
      background:rgba(15,23,42,.44);
      color:#e0f2fe;
    }
    .btn-secondary:hover,.btn-secondary:focus-visible{
      border-color:rgba(34,211,238,.65);
      background:rgba(34,211,238,.1);
      transform:translateY(-2px);
      outline:none;
    }
    .badge,.tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border:1px solid rgba(125,211,252,.2);
      border-radius:999px;
      padding:7px 11px;
      background:rgba(15,23,42,.52);
      color:#dbeafe;
      font-size:13px;
      line-height:1.1;
    }
    .badge-amber{
      border-color:rgba(245,158,11,.35);
      color:#fde68a;
      background:rgba(245,158,11,.08);
    }
    .status-dot{
      width:8px;height:8px;border-radius:50%;
      background:var(--green);
      box-shadow:0 0 16px rgba(45,212,191,.7);
    }
    main{position:relative}
    section{position:relative;padding:88px 0}
    .hero{
      padding:150px 0 80px;
      min-height:760px;
      display:flex;
      align-items:center;
    }
    .hero:before{
      content:"";
      position:absolute;
      left:50%;
      top:105px;
      width:min(980px,92vw);
      height:430px;
      transform:translateX(-50%);
      border-radius:48px;
      background:
        linear-gradient(135deg,rgba(34,211,238,.14),rgba(99,102,241,.08)),
        radial-gradient(circle at 20% 30%,rgba(34,211,238,.24),transparent 32%),
        radial-gradient(circle at 80% 50%,rgba(139,92,246,.22),transparent 34%);
      filter:blur(.2px);
      box-shadow:inset 0 0 0 1px rgba(125,211,252,.12),0 30px 120px rgba(34,211,238,.08);
      z-index:-1;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:28px;
      align-items:stretch;
    }
    .hero-copy{
      padding:34px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg,rgba(15,23,42,.62),rgba(8,18,34,.72));
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-topline{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:22px;
    }
    h1{
      margin:0;
      font-size:clamp(32px,5vw,54px);
      line-height:1.14;
      letter-spacing:-.04em;
      max-width:900px;
    }
    .gradient-text{
      background:linear-gradient(90deg,#fff 0%,#a5f3fc 46%,#c4b5fd 92%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-desc{
      margin:20px 0 0;
      color:var(--muted);
      font-size:17px;
      max-width:720px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .group-strip{
      margin-top:26px;
      padding:16px;
      border:1px solid rgba(125,211,252,.16);
      border-radius:18px;
      background:rgba(2,6,23,.3);
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
    }
    .group-item{
      padding:12px;
      border-radius:15px;
      background:rgba(15,23,42,.5);
      border:1px solid rgba(125,211,252,.12);
    }
    .group-item strong{display:block;font-size:22px;color:#a5f3fc;line-height:1.1}
    .group-item span{display:block;margin-top:5px;color:var(--weak);font-size:12px}
    .dashboard{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:rgba(8,18,34,.72);
      box-shadow:var(--shadow);
      padding:22px;
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .metric-card{
      position:relative;
      padding:18px;
      border:1px solid rgba(125,211,252,.16);
      border-radius:20px;
      background:linear-gradient(180deg,rgba(15,23,42,.66),rgba(15,23,42,.38));
      overflow:hidden;
      transition:var(--ease);
    }
    .metric-card:hover{
      transform:translateY(-3px);
      border-color:rgba(34,211,238,.46);
      box-shadow:var(--glow);
    }
    .metric-card.wide{grid-column:span 2}
    .metric-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      color:var(--weak);
      font-size:13px;
      margin-bottom:14px;
    }
    .metric-number{
      font-size:34px;
      line-height:1;
      font-weight:900;
      color:#a5f3fc;
      letter-spacing:-.04em;
    }
    .metric-text{margin-top:8px;color:var(--muted);font-size:14px}
    .trend{
      height:6px;
      border-radius:999px;
      margin-top:16px;
      background:linear-gradient(90deg,var(--cyan) 0 48%,rgba(125,211,252,.18) 48% 100%);
      box-shadow:0 0 18px rgba(34,211,238,.18);
    }
    .section-head{
      max-width:760px;
      margin-bottom:34px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#67e8f9;
      font-size:13px;
      font-weight:800;
      margin-bottom:10px;
      letter-spacing:.08em;
    }
    h2{
      margin:0;
      font-size:clamp(25px,3.5vw,38px);
      line-height:1.2;
      letter-spacing:-.03em;
    }
    .section-head p{
      margin:12px 0 0;
      color:var(--muted);
      font-size:16px;
    }
    .matrix{
      display:grid;
      grid-template-columns:1.1fr .9fr .9fr;
      gap:18px;
    }
    .glass-card{
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:linear-gradient(180deg,var(--panel),rgba(8,18,34,.54));
      box-shadow:0 18px 70px rgba(0,0,0,.24);
      transition:var(--ease);
      overflow:hidden;
    }
    .glass-card:hover{
      transform:translateY(-4px);
      border-color:rgba(34,211,238,.44);
      box-shadow:var(--glow);
    }
    .feature-main{
      grid-row:span 2;
      padding:28px;
      min-height:360px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .feature-card{padding:24px;min-height:170px}
    .icon{
      width:42px;height:42px;border-radius:14px;
      display:inline-flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(139,92,246,.2));
      border:1px solid rgba(125,211,252,.22);
      color:#a5f3fc;
      font-weight:900;
      margin-bottom:16px;
    }
    .card-title{font-size:19px;font-weight:900;margin:0 0 8px}
    .card-text{margin:0;color:var(--muted);font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
    .tag:hover{border-color:rgba(34,211,238,.5);color:#fff;background:rgba(34,211,238,.09)}
    .comparison-wrap{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:18px;
      align-items:start;
    }
    .compare-note{padding:26px}
    .compare-note ul{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
    .compare-note li{
      display:flex;gap:10px;align-items:flex-start;
      color:var(--muted);
      padding:12px;
      border-radius:14px;
      background:rgba(15,23,42,.42);
      border:1px solid rgba(125,211,252,.1);
    }
    .check{
      width:20px;height:20px;flex:0 0 auto;border-radius:50%;
      display:inline-flex;align-items:center;justify-content:center;
      color:#04111d;background:var(--green);font-size:12px;font-weight:900;
    }
    .compare-table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
    }
    .table-card{padding:10px}
    .compare-table th,.compare-table td{
      padding:16px;
      text-align:left;
      border-bottom:1px solid rgba(125,211,252,.12);
      color:var(--muted);
      vertical-align:top;
    }
    .compare-table th{
      color:#e0f2fe;
      font-size:14px;
      background:rgba(15,23,42,.62);
    }
    .compare-table tr:hover td{background:rgba(34,211,238,.055)}
    .compare-table td:last-child{
      color:#f8fafc;
      background:rgba(34,211,238,.035);
      border-left:1px solid rgba(34,211,238,.14);
    }
    .recommend-grid{
      display:grid;
      grid-template-columns:1fr 1.35fr;
      gap:18px;
    }
    .recommend-card{padding:26px}
    .plan{
      padding:20px;
      border-radius:18px;
      border:1px solid rgba(125,211,252,.16);
      background:rgba(15,23,42,.48);
      display:flex;
      justify-content:space-between;
      gap:16px;
      align-items:center;
      margin-top:14px;
      transition:var(--ease);
    }
    .plan:hover{border-color:rgba(34,211,238,.45);transform:translateX(3px)}
    .plan strong{display:block;color:#fff}
    .plan span{display:block;color:var(--weak);font-size:13px;margin-top:3px}
    .topic-rail{
      display:flex;
      gap:14px;
      overflow:auto;
      padding:4px 2px 12px;
      scrollbar-color:rgba(34,211,238,.4) rgba(15,23,42,.4);
    }
    .topic-card{
      min-width:230px;
      padding:20px;
      border:1px solid rgba(125,211,252,.16);
      border-radius:22px;
      background:
        linear-gradient(135deg,rgba(34,211,238,.1),transparent 48%),
        linear-gradient(180deg,rgba(15,23,42,.72),rgba(8,18,34,.68));
      min-height:170px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      transition:var(--ease);
    }
    .topic-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.42)}
    .topic-card h3{margin:12px 0 6px;font-size:18px}
    .topic-card p{margin:0;color:var(--muted);font-size:14px}
    .news-layout{
      display:grid;
      grid-template-columns:1.35fr .65fr;
      gap:18px;
      align-items:start;
    }
    .news-list{padding:12px}
    .news-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:14px;
      align-items:center;
      padding:16px;
      border-radius:16px;
      transition:var(--ease);
      border:1px solid transparent;
    }
    .news-item:hover{
      background:rgba(34,211,238,.06);
      border-color:rgba(125,211,252,.16);
    }
    .news-date{
      color:#67e8f9;
      font-weight:900;
      font-size:13px;
      width:62px;
    }
    .news-item a{font-weight:800;color:#f8fafc}
    .news-item a:hover{color:#67e8f9}
    .news-item p{margin:4px 0 0;color:var(--weak);font-size:13px}
    .arrow{color:#67e8f9}
    .side-panel{padding:24px}
    .safety-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      margin-top:28px;
    }
    .safety-item{
      padding:18px;
      border:1px solid rgba(125,211,252,.15);
      border-radius:18px;
      background:rgba(15,23,42,.42);
      text-align:center;
    }
    .safety-item b{display:block;margin-top:8px;color:#fff}
    .safety-item span{display:block;color:var(--weak);font-size:13px;margin-top:4px}
    .faq-list{display:grid;gap:14px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:18px;
      background:rgba(15,23,42,.52);
      overflow:hidden;
      transition:var(--ease);
    }
    .faq-item[open]{
      border-color:rgba(34,211,238,.46);
      background:rgba(8,18,34,.78);
      box-shadow:0 0 42px rgba(34,211,238,.08);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      font-weight:900;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:26px;height:26px;border-radius:50%;
      display:inline-flex;align-items:center;justify-content:center;
      color:#06111f;background:var(--cyan);
      font-weight:900;
      transition:var(--ease);
      flex:0 0 auto;
    }
    .faq-item[open] summary:after{transform:rotate(45deg);background:#a78bfa}
    .faq-item p{margin:0;padding:0 20px 20px;color:var(--muted)}
    .cta-panel{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:24px;
      align-items:stretch;
      padding:28px;
      border:1px solid rgba(34,211,238,.24);
      border-radius:32px;
      background:
        radial-gradient(circle at 16% 0,rgba(34,211,238,.18),transparent 35%),
        radial-gradient(circle at 92% 70%,rgba(139,92,246,.16),transparent 36%),
        rgba(8,18,34,.78);
      box-shadow:var(--shadow);
    }
    .form-card{
      padding:22px;
      border:1px solid rgba(125,211,252,.16);
      border-radius:24px;
      background:rgba(2,6,23,.24);
    }
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:7px}
    .field.full{grid-column:1/-1}
    label{color:#e2e8f0;font-weight:800;font-size:14px}
    input,select,textarea{
      width:100%;
      border:1px solid rgba(125,211,252,.16);
      border-radius:14px;
      padding:12px 13px;
      color:var(--text);
      background:rgba(15,23,42,.58);
      outline:0;
      transition:var(--ease);
    }
    textarea{min-height:110px;resize:vertical}
    input:focus,select:focus,textarea:focus{
      border-color:var(--cyan);
      box-shadow:0 0 0 4px rgba(34,211,238,.14);
    }
    .check-row{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--muted);
      font-size:14px;
      margin:14px 0;
    }
    .check-row input{width:18px;height:18px;accent-color:var(--cyan);margin-top:4px}
    .form-message{
      display:none;
      margin-top:14px;
      padding:12px 14px;
      border-radius:14px;
      font-size:14px;
      border:1px solid rgba(45,212,191,.3);
      background:rgba(45,212,191,.08);
      color:#99f6e4;
    }
    .form-message.error{
      border-color:rgba(245,158,11,.35);
      background:rgba(245,158,11,.08);
      color:#fde68a;
    }
    .site-footer{
      position:relative;
      padding:44px 0 30px;
      background:rgba(2,6,23,.72);
      border-top:1px solid rgba(125,211,252,.14);
    }
    .site-footer:before{
      content:"";
      position:absolute;
      top:0;left:0;right:0;height:1px;
      background:linear-gradient(90deg,transparent,var(--cyan),var(--violet),transparent);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:24px;
      align-items:start;
    }
    .footer-title{font-weight:900;margin:0 0 10px}
    .footer-text{margin:0;color:var(--weak);font-size:14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:var(--muted);font-size:14px;transition:var(--ease)}
    .footer-links a:hover{color:#67e8f9;transform:translateX(2px)}
    .copyright{
      margin-top:28px;
      padding-top:18px;
      border-top:1px solid rgba(125,211,252,.12);
      display:flex;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
      color:#64748b;
      font-size:13px;
    }
    .mobile-panel{
      display:none;
      width:min(var(--container),calc(100% - 28px));
      margin:10px auto 0;
      border:1px solid var(--line);
      border-radius:24px;
      padding:14px;
      background:rgba(5,8,22,.92);
      backdrop-filter:blur(18px);
      box-shadow:var(--shadow);
    }
    .mobile-panel a,.mobile-panel .btn{width:100%;justify-content:center;margin-top:8px}
    .mobile-panel .nav-search{width:100%;margin-top:8px}
    @media (max-width:1024px){
      .nav-search{display:none}
      .hero-grid,.comparison-wrap,.recommend-grid,.news-layout,.cta-panel{grid-template-columns:1fr}
      .matrix{grid-template-columns:1fr 1fr}
      .feature-main{grid-column:1/-1;grid-row:auto}
      .safety-strip{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      section{padding:62px 0}
      .hero{padding:118px 0 58px;min-height:auto}
      .nav-shell{border-radius:24px;padding:10px 12px}
      .brand-text{max-width:190px;font-size:13px}
      .nav-links,.nav-actions .btn{display:none}
      .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
      .mobile-panel.open{display:block}
      .hero-copy{padding:23px}
      .dashboard,.matrix,.form-grid{grid-template-columns:1fr}
      .metric-card.wide{grid-column:auto}
      .group-strip{grid-template-columns:1fr}
      .compare-table,.compare-table tbody,.compare-table tr,.compare-table td,.compare-table th{display:block;width:100%}
      .compare-table thead{display:none}
      .compare-table tr{border:1px solid rgba(125,211,252,.14);border-radius:16px;margin:10px;overflow:hidden}
      .compare-table td{border-bottom:1px solid rgba(125,211,252,.08)}
      .compare-table td:before{content:attr(data-label);display:block;color:#67e8f9;font-weight:900;font-size:12px;margin-bottom:4px}
      .news-item{grid-template-columns:1fr auto}
      .news-date{width:auto;grid-column:1/-1}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
    }
    @media (max-width:520px){
      .brand-text{max-width:158px}
      .hero-actions .btn{width:100%}
      .safety-strip{grid-template-columns:1fr}
      .cta-panel{padding:18px;border-radius:24px}
      .topic-card{min-width:205px}
    }

/* roulang page: category1 */
:root {
      --bg: #050816;
      --bg-2: #07111f;
      --bg-3: #081a2e;
      --panel: rgba(15, 23, 42, .66);
      --panel-strong: rgba(8, 18, 34, .84);
      --panel-soft: rgba(15, 33, 58, .48);
      --text: #f8fafc;
      --muted: #cbd5e1;
      --weak: #94a3b8;
      --line: rgba(148, 163, 184, .18);
      --line-bright: rgba(125, 211, 252, .34);
      --cyan: #22d3ee;
      --blue: #38bdf8;
      --indigo: #6366f1;
      --violet: #8b5cf6;
      --amber: #f59e0b;
      --green: #2dd4bf;
      --danger: #fb7185;
      --radius-xl: 28px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --shadow: 0 24px 90px rgba(0, 0, 0, .42);
      --glow: 0 0 32px rgba(34, 211, 238, .28);
      --container: 1220px;
      --header-h: 78px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      min-height: 100vh;
      color: var(--text);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      line-height: 1.75;
      background:
        radial-gradient(circle at 18% 8%, rgba(34, 211, 238, .18), transparent 34%),
        radial-gradient(circle at 88% 12%, rgba(99, 102, 241, .2), transparent 32%),
        radial-gradient(circle at 55% 72%, rgba(139, 92, 246, .13), transparent 38%),
        linear-gradient(135deg, var(--bg), var(--bg-2) 45%, var(--bg-3));
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -2;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(125, 211, 252, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(125, 211, 252, .055) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: radial-gradient(circle at center, black 0%, transparent 78%);
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      pointer-events: none;
      background: repeating-linear-gradient(
        180deg,
        rgba(255, 255, 255, .018) 0,
        rgba(255, 255, 255, .018) 1px,
        transparent 1px,
        transparent 7px
      );
      opacity: .42;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .22s ease, border-color .22s ease, background .22s ease, transform .22s ease, box-shadow .22s ease;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
    }

    input,
    textarea,
    select {
      width: 100%;
      color: var(--text);
      background: rgba(2, 8, 23, .46);
      border: 1px solid rgba(148, 163, 184, .22);
      border-radius: 14px;
      outline: none;
      transition: border-color .22s ease, box-shadow .22s ease, background .22s ease;
    }

    input:focus,
    textarea:focus,
    select:focus {
      border-color: var(--cyan);
      box-shadow: 0 0 0 4px rgba(34, 211, 238, .15), 0 0 26px rgba(34, 211, 238, .16);
      background: rgba(2, 8, 23, .66);
    }

    input::placeholder,
    textarea::placeholder {
      color: rgba(203, 213, 225, .54);
    }

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

    :focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }

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

    .site-header {
      position: fixed;
      top: 14px;
      left: 0;
      right: 0;
      z-index: 50;
      transition: top .28s ease;
    }

    .nav-shell {
      width: min(var(--container), calc(100% - 34px));
      min-height: 64px;
      margin: 0 auto;
      padding: 10px 12px 10px 16px;
      display: flex;
      align-items: center;
      gap: 18px;
      border: 1px solid rgba(125, 211, 252, .2);
      border-radius: 999px;
      background: rgba(8, 18, 34, .56);
      box-shadow: 0 18px 60px rgba(0, 0, 0, .28);
      backdrop-filter: blur(18px);
    }

    .site-header.scrolled {
      top: 0;
    }

    .site-header.scrolled .nav-shell {
      border-radius: 0 0 24px 24px;
      background: rgba(5, 8, 22, .92);
      border-color: rgba(125, 211, 252, .28);
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      min-width: max-content;
      font-weight: 900;
      letter-spacing: -.02em;
      color: #fff;
    }

    .brand:hover .brand-mark {
      transform: rotate(45deg) scale(1.05);
      box-shadow: 0 0 28px rgba(34, 211, 238, .58);
    }

    .brand-mark {
      width: 28px;
      height: 28px;
      position: relative;
      border-radius: 9px;
      border: 1px solid rgba(103, 232, 249, .9);
      background: linear-gradient(135deg, rgba(34, 211, 238, .26), rgba(99, 102, 241, .32));
      box-shadow: 0 0 18px rgba(34, 211, 238, .34);
      transform: rotate(45deg);
      transition: transform .24s ease, box-shadow .24s ease;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 7px;
      border-radius: 5px;
      background: var(--cyan);
      box-shadow: 0 0 20px rgba(34, 211, 238, .72);
    }

    .brand-text {
      font-size: 16px;
      line-height: 1.2;
      background: linear-gradient(90deg, #fff, #a5f3fc 52%, #c4b5fd);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-left: auto;
    }

    .nav-links a {
      position: relative;
      padding: 9px 13px;
      border-radius: 999px;
      color: #e2e8f0;
      font-size: 14px;
      font-weight: 700;
    }

    .nav-links a:hover {
      color: #67e8f9;
      background: rgba(14, 165, 233, .08);
    }

    .nav-links a.active {
      color: #fff;
      background: linear-gradient(135deg, rgba(34, 211, 238, .18), rgba(99, 102, 241, .22));
      box-shadow: inset 0 0 0 1px rgba(125, 211, 252, .24);
    }

    .nav-links a.active::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 5px;
      height: 2px;
      border-radius: 999px;
      background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .nav-search {
      width: 184px;
      height: 42px;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 0 12px;
      color: var(--weak);
      border: 1px solid rgba(148, 163, 184, .18);
      border-radius: 999px;
      background: rgba(2, 8, 23, .42);
    }

    .nav-search input {
      height: 38px;
      padding: 0;
      border: 0;
      border-radius: 0;
      box-shadow: none;
      background: transparent;
      font-size: 13px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 10px 18px;
      border-radius: 999px;
      font-weight: 800;
      font-size: 14px;
      letter-spacing: .01em;
      border: 1px solid transparent;
      user-select: none;
      white-space: nowrap;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--blue), var(--indigo) 58%, var(--violet));
      box-shadow: 0 0 22px rgba(34, 211, 238, .28), 0 14px 34px rgba(99, 102, 241, .22);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 34px rgba(34, 211, 238, .42), 0 18px 44px rgba(99, 102, 241, .28);
    }

    .btn-secondary {
      color: #dff8ff;
      background: rgba(8, 18, 34, .58);
      border-color: rgba(125, 211, 252, .28);
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .02);
    }

    .btn-secondary:hover {
      color: #fff;
      transform: translateY(-2px);
      border-color: rgba(103, 232, 249, .58);
      box-shadow: var(--glow);
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 50%;
      color: #fff;
      background: rgba(15, 23, 42, .78);
      border: 1px solid rgba(125, 211, 252, .24);
    }

    .mobile-panel {
      display: none;
      width: min(var(--container), calc(100% - 34px));
      margin: 10px auto 0;
      padding: 16px;
      border: 1px solid rgba(125, 211, 252, .2);
      border-radius: 22px;
      background: rgba(8, 18, 34, .92);
      backdrop-filter: blur(18px);
      box-shadow: var(--shadow);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      width: fit-content;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      border: 1px solid rgba(125, 211, 252, .18);
      background: rgba(15, 23, 42, .64);
      color: #dff8ff;
    }

    .badge::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 12px rgba(45, 212, 191, .78);
    }

    .badge-amber {
      color: #ffedd5;
      border-color: rgba(245, 158, 11, .34);
      background: rgba(245, 158, 11, .1);
    }

    .badge-amber::before {
      background: var(--amber);
      box-shadow: 0 0 12px rgba(245, 158, 11, .72);
    }

    .badge-purple {
      border-color: rgba(139, 92, 246, .34);
      background: rgba(99, 102, 241, .14);
    }

    .page-hero {
      position: relative;
      padding: 138px 0 58px;
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      width: 520px;
      height: 520px;
      right: -120px;
      top: 20px;
      border-radius: 50%;
      border: 1px solid rgba(125, 211, 252, .16);
      background: radial-gradient(circle, rgba(34, 211, 238, .12), transparent 64%);
      box-shadow: inset 0 0 70px rgba(99, 102, 241, .14);
    }

    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr);
      gap: 28px;
      align-items: stretch;
    }

    .eyebrow-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    h1 {
      max-width: 850px;
      font-size: clamp(32px, 5vw, 54px);
      line-height: 1.12;
      letter-spacing: -.045em;
      font-weight: 950;
    }

    .gradient-text {
      background: linear-gradient(90deg, #fff 0%, #a5f3fc 42%, #c4b5fd 78%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .hero-summary {
      max-width: 760px;
      margin-top: 18px;
      color: var(--muted);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .notice-strip {
      margin-top: 22px;
      padding: 14px 16px;
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: #fde68a;
      border: 1px solid rgba(245, 158, 11, .28);
      border-radius: 18px;
      background: linear-gradient(135deg, rgba(245, 158, 11, .12), rgba(15, 23, 42, .42));
    }

    .notice-strip strong {
      color: #fffbeb;
    }

    .glass-card {
      position: relative;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: var(--radius-xl);
      background: linear-gradient(135deg, rgba(15, 23, 42, .72), rgba(8, 18, 34, .64));
      box-shadow: var(--shadow);
      backdrop-filter: blur(18px);
      overflow: hidden;
    }

    .glass-card::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background:
        linear-gradient(135deg, rgba(34, 211, 238, .16), transparent 28%),
        radial-gradient(circle at 90% 0%, rgba(139, 92, 246, .18), transparent 36%);
      opacity: .9;
    }

    .hero-panel {
      padding: 22px;
    }

    .panel-content {
      position: relative;
      z-index: 1;
    }

    .panel-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      margin-bottom: 18px;
    }

    .panel-title h2,
    .panel-title h3 {
      font-size: 18px;
      line-height: 1.35;
    }

    .status-dot {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #99f6e4;
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
    }

    .status-dot::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 18px rgba(45, 212, 191, .82);
    }

    .time-visual {
      display: grid;
      gap: 12px;
    }

    .time-row {
      display: grid;
      grid-template-columns: 74px 1fr 56px;
      align-items: center;
      gap: 10px;
      padding: 12px;
      border: 1px solid rgba(148, 163, 184, .14);
      border-radius: 16px;
      background: rgba(2, 8, 23, .28);
    }

    .time-row:hover {
      border-color: rgba(103, 232, 249, .38);
      background: rgba(15, 23, 42, .54);
    }

    .time-label {
      color: #e0f2fe;
      font-weight: 900;
      font-size: 13px;
    }

    .meter {
      height: 9px;
      overflow: hidden;
      border-radius: 999px;
      background: rgba(148, 163, 184, .16);
    }

    .meter span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--cyan), var(--indigo));
      box-shadow: 0 0 16px rgba(34, 211, 238, .46);
    }

    .time-value {
      color: var(--weak);
      font-size: 12px;
      text-align: right;
      font-weight: 800;
    }

    .quick-slots {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 16px;
    }

    .slot {
      padding: 12px 10px;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 16px;
      background: rgba(15, 23, 42, .48);
      text-align: center;
    }

    .slot strong {
      display: block;
      color: #fff;
      font-size: 18px;
      line-height: 1.1;
    }

    .slot span {
      display: block;
      margin-top: 5px;
      color: var(--weak);
      font-size: 12px;
    }

    main {
      padding-bottom: 80px;
    }

    .section {
      padding: 42px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, .92fr) minmax(260px, .42fr);
      gap: 24px;
      align-items: end;
      margin-bottom: 22px;
    }

    .section-kicker {
      margin-bottom: 8px;
      color: #67e8f9;
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .08em;
    }

    h2 {
      font-size: clamp(25px, 3.2vw, 36px);
      line-height: 1.2;
      letter-spacing: -.03em;
      font-weight: 950;
    }

    .section-desc {
      color: var(--muted);
      font-size: 15px;
    }

    .filter-dock {
      position: sticky;
      top: 86px;
      z-index: 20;
      margin-top: -10px;
      padding: 14px;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 22px;
      background: rgba(8, 18, 34, .76);
      backdrop-filter: blur(16px);
      box-shadow: 0 16px 48px rgba(0, 0, 0, .24);
    }

    .filter-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      flex-wrap: wrap;
    }

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

    .chip {
      min-height: 38px;
      padding: 8px 13px;
      border: 1px solid rgba(125, 211, 252, .2);
      border-radius: 999px;
      color: #dbeafe;
      background: rgba(15, 23, 42, .58);
      font-size: 13px;
      font-weight: 800;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;
    }

    .chip:hover {
      transform: translateY(-2px);
      border-color: rgba(103, 232, 249, .55);
      box-shadow: 0 0 24px rgba(34, 211, 238, .18);
    }

    .chip.active {
      color: #fff;
      border-color: rgba(103, 232, 249, .52);
      background: linear-gradient(135deg, rgba(34, 211, 238, .88), rgba(99, 102, 241, .84));
      box-shadow: 0 0 28px rgba(34, 211, 238, .22);
    }

    .filter-summary {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--weak);
      font-size: 13px;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: 1.2fr .9fr .9fr .9fr;
      gap: 14px;
      margin-top: 18px;
    }

    .metric-card {
      padding: 18px;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 20px;
      background: rgba(15, 23, 42, .58);
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }

    .metric-card:hover {
      transform: translateY(-3px);
      border-color: rgba(103, 232, 249, .42);
      box-shadow: var(--glow);
    }

    .metric-card strong {
      display: block;
      font-size: 26px;
      line-height: 1.1;
      color: #a5f3fc;
      letter-spacing: -.03em;
    }

    .metric-card span {
      display: block;
      margin-top: 8px;
      color: var(--weak);
      font-size: 13px;
    }

    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 22px;
      align-items: start;
    }

    .index-masonry {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .index-card {
      position: relative;
      min-height: 220px;
      padding: 22px;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 24px;
      background:
        linear-gradient(145deg, rgba(15, 23, 42, .72), rgba(8, 18, 34, .66)),
        radial-gradient(circle at 90% 10%, rgba(34, 211, 238, .14), transparent 34%);
      box-shadow: 0 16px 60px rgba(0, 0, 0, .28);
      overflow: hidden;
      transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
    }

    .index-card:nth-child(3n + 1) {
      min-height: 266px;
    }

    .index-card:nth-child(4n) {
      transform: translateY(18px);
    }

    .index-card:hover {
      transform: translateY(-4px);
      border-color: rgba(103, 232, 249, .48);
      box-shadow: 0 22px 72px rgba(0, 0, 0, .34), 0 0 30px rgba(34, 211, 238, .18);
    }

    .index-card:nth-child(4n):hover {
      transform: translateY(12px);
    }

    .card-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 18px;
    }

    .status-tag {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 6px 10px;
      border-radius: 999px;
      color: #cffafe;
      border: 1px solid rgba(125, 211, 252, .24);
      background: rgba(34, 211, 238, .08);
      font-size: 12px;
      font-weight: 900;
    }

    .card-code {
      color: rgba(203, 213, 225, .44);
      font-size: 12px;
      font-weight: 900;
      letter-spacing: .12em;
    }

    .index-card h3 {
      font-size: 21px;
      line-height: 1.35;
      letter-spacing: -.02em;
      margin-bottom: 10px;
    }

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

    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 18px 0;
    }

    .mini-meta {
      padding: 5px 9px;
      border-radius: 999px;
      color: var(--weak);
      background: rgba(2, 8, 23, .36);
      border: 1px solid rgba(148, 163, 184, .12);
      font-size: 12px;
      font-weight: 800;
    }

    .card-action {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #67e8f9;
      font-weight: 900;
      font-size: 14px;
    }

    .card-action:hover {
      color: #fff;
    }

    .side-stack {
      position: sticky;
      top: 156px;
      display: grid;
      gap: 16px;
    }

    .side-card {
      padding: 20px;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 24px;
      background: rgba(15, 23, 42, .64);
      box-shadow: 0 16px 52px rgba(0, 0, 0, .22);
      backdrop-filter: blur(16px);
    }

    .side-card h3 {
      font-size: 17px;
      margin-bottom: 12px;
    }

    .side-card p,
    .side-card li {
      color: var(--muted);
      font-size: 14px;
    }

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

    .side-list li {
      display: flex;
      gap: 10px;
      padding: 10px;
      border-radius: 14px;
      background: rgba(2, 8, 23, .28);
    }

    .side-list li::before {
      content: "";
      width: 8px;
      height: 8px;
      flex: 0 0 8px;
      margin-top: 8px;
      border-radius: 50%;
      background: var(--cyan);
      box-shadow: 0 0 12px rgba(34, 211, 238, .62);
    }

    .process-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 20px;
      align-items: stretch;
    }

    .process-panel {
      padding: 24px;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 26px;
      background: rgba(8, 18, 34, .62);
      box-shadow: var(--shadow);
    }

    .bracket {
      display: grid;
      gap: 12px;
    }

    .step {
      display: grid;
      grid-template-columns: 46px 1fr;
      gap: 14px;
      align-items: start;
      padding: 16px;
      border: 1px solid rgba(148, 163, 184, .14);
      border-radius: 18px;
      background: rgba(15, 23, 42, .48);
    }

    .step-num {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      color: #fff;
      font-weight: 950;
      background: linear-gradient(135deg, var(--cyan), var(--indigo));
      box-shadow: 0 0 24px rgba(34, 211, 238, .2);
    }

    .step h3 {
      font-size: 17px;
      margin-bottom: 4px;
    }

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

    .compare-panel {
      overflow: hidden;
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 26px;
      background: rgba(15, 23, 42, .58);
      box-shadow: var(--shadow);
    }

    .compare-head,
    .compare-row {
      display: grid;
      grid-template-columns: .78fr 1fr 1fr;
    }

    .compare-head {
      color: #fff;
      font-weight: 950;
      background: linear-gradient(90deg, rgba(34, 211, 238, .18), rgba(99, 102, 241, .18));
    }

    .compare-head div,
    .compare-row div {
      padding: 16px;
      border-right: 1px solid rgba(148, 163, 184, .14);
      border-bottom: 1px solid rgba(148, 163, 184, .12);
    }

    .compare-head div:last-child,
    .compare-row div:last-child {
      border-right: 0;
    }

    .compare-row {
      color: var(--muted);
      font-size: 14px;
      transition: background .2s ease;
    }

    .compare-row:hover {
      background: rgba(34, 211, 238, .06);
    }

    .compare-row .better {
      color: #dff8ff;
      box-shadow: inset 3px 0 0 rgba(34, 211, 238, .72);
      background: rgba(34, 211, 238, .04);
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: 360px 1fr;
      gap: 22px;
      align-items: start;
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      border: 1px solid rgba(125, 211, 252, .18);
      border-radius: 20px;
      background: rgba(15, 23, 42, .6);
      overflow: hidden;
      transition: border-color .22s ease, box-shadow .22s ease;
    }

    .faq-item:hover,
    .faq-item.open {
      border-color: rgba(103, 232, 249, .42);
      box-shadow: 0 0 26px rgba(34, 211, 238, .12);
    }

    .faq-question {
      width: 100%;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      color: #fff;
      background: transparent;
      text-align: left;
      font-weight: 900;
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      flex: 0 0 28px;
      border-radius: 50%;
      color: #a5f3fc;
      border: 1px solid rgba(125, 211, 252, .22);
      transition: transform .22s ease, background .22s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: rgba(34, 211, 238, .12);
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 15px;
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .feedback-panel {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 22px;
      padding: 24px;
      border: 1px solid rgba(125, 211, 252, .2);
      border-radius: 30px;
      background:
        radial-gradient(circle at 0% 0%, rgba(34, 211, 238, .14), transparent 34%),
        radial-gradient(circle at 100% 100%, rgba(99, 102, 241, .16), transparent 34%),
        rgba(8, 18, 34, .72);
      box-shadow: var(--shadow);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .field {
      display: grid;
      gap: 7px;
    }

    .field.full {
      grid-column: 1 / -1;
    }

    .field label {
      color: #e2e8f0;
      font-size: 13px;
      font-weight: 900;
    }

    .field input,
    .field select,
    .field textarea {
      padding: 12px 13px;
    }

    .field textarea {
      min-height: 116px;
      resize: vertical;
    }

    .check-row {
      display: grid;
      grid-template-columns: 22px 1fr;
      gap: 10px;
      align-items: start;
      padding: 12px;
      border: 1px solid rgba(245, 158, 11, .24);
      border-radius: 16px;
      background: rgba(245, 158, 11, .08);
      color: #fde68a;
      font-size: 13px;
    }

    .check-row input {
      width: 18px;
      height: 18px;
      margin-top: 3px;
      accent-color: var(--cyan);
    }

    .form-message {
      display: none;
      margin-top: 12px;
      padding: 12px 14px;
      border-radius: 16px;
      font-size: 14px;
      font-weight: 800;
    }

    .form-message.success {
      display: block;
      color: #ccfbf1;
      border: 1px solid rgba(45, 212, 191, .3);
      background: rgba(45, 212, 191, .1);
    }

    .form-message.error {
      display: block;
      color: #ffedd5;
      border: 1px solid rgba(245, 158, 11, .34);
      background: rgba(245, 158, 11, .1);
    }

    .pagination {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 34px;
      flex-wrap: wrap;
    }

    .page-btn {
      min-width: 42px;
      min-height: 42px;
      display: inline-grid;
      place-items: center;
      padding: 8px 14px;
      border: 1px solid rgba(125, 211, 252, .2);
      border-radius: 999px;
      color: var(--muted);
      background: rgba(15, 23, 42, .5);
      font-weight: 900;
    }

    .page-btn:hover,
    .page-btn.active {
      color: #fff;
      border-color: rgba(103, 232, 249, .52);
      background: linear-gradient(135deg, rgba(34, 211, 238, .26), rgba(99, 102, 241, .3));
      box-shadow: var(--glow);
    }

    .site-footer {
      position: relative;
      padding: 42px 0 26px;
      background: rgba(2, 6, 23, .82);
      border-top: 1px solid rgba(125, 211, 252, .18);
    }

    .site-footer::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .62fr .9fr;
      gap: 30px;
      align-items: start;
    }

    .footer-text {
      color: var(--weak);
      font-size: 14px;
      max-width: 560px;
    }

    .footer-title {
      margin-bottom: 12px;
      color: #fff;
      font-weight: 950;
    }

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

    .footer-links a {
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #67e8f9;
      transform: translateX(3px);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      margin-top: 30px;
      padding-top: 20px;
      color: rgba(203, 213, 225, .62);
      border-top: 1px solid rgba(148, 163, 184, .14);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .nav-search {
        display: none;
      }

      .hero-grid,
      .content-layout,
      .process-grid,
      .faq-wrap,
      .feedback-panel {
        grid-template-columns: 1fr;
      }

      .section-head {
        grid-template-columns: 1fr;
      }

      .metrics-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .side-stack {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

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

    @media (max-width: 768px) {
      .container,
      .nav-shell,
      .mobile-panel {
        width: calc(100% - 28px);
      }

      .site-header {
        top: 10px;
      }

      .nav-shell {
        min-height: 58px;
        padding: 9px 10px 9px 13px;
        border-radius: 22px;
      }

      .brand-text {
        max-width: 190px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .nav-links,
      .nav-actions > .btn {
        display: none;
      }

      .menu-toggle {
        display: grid;
        place-items: center;
        margin-left: auto;
      }

      .mobile-panel.open {
        display: grid;
        gap: 10px;
      }

      .mobile-panel .nav-search {
        display: flex;
        width: 100%;
      }

      .page-hero {
        padding-top: 116px;
      }

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

      .hero-actions .btn {
        width: 100%;
      }

      .filter-dock {
        top: 76px;
        overflow: hidden;
      }

      .filter-line {
        align-items: flex-start;
      }

      .chips {
        flex-wrap: nowrap;
        overflow-x: auto;
        width: 100%;
        padding-bottom: 4px;
        scrollbar-width: thin;
      }

      .chip {
        flex: 0 0 auto;
      }

      .metrics-grid,
      .index-masonry,
      .side-stack,
      .form-grid,
      .quick-slots {
        grid-template-columns: 1fr;
      }

      .index-card:nth-child(4n),
      .index-card:nth-child(4n):hover {
        transform: none;
      }

      .compare-head {
        display: none;
      }

      .compare-row {
        display: grid;
        grid-template-columns: 1fr;
        margin: 12px;
        border: 1px solid rgba(125, 211, 252, .16);
        border-radius: 18px;
        overflow: hidden;
      }

      .compare-row div {
        border-right: 0;
      }

      .compare-row div:first-child {
        color: #fff;
        font-weight: 950;
        background: rgba(34, 211, 238, .08);
      }

      .footer-grid,
      .copyright {
        grid-template-columns: 1fr;
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: calc(100% - 24px);
      }

      h1 {
        font-size: 31px;
      }

      .page-hero::before {
        width: 360px;
        height: 360px;
        right: -190px;
      }

      .hero-panel,
      .feedback-panel,
      .process-panel {
        padding: 18px;
        border-radius: 22px;
      }

      .notice-strip {
        flex-direction: column;
      }

      .section {
        padding: 32px 0;
      }

      .metric-card strong {
        font-size: 24px;
      }
    }