:root{
      --bg:#080b16;
      --bg2:#11172a;
      --card:#111a31;
      --card2:#151f39;
      --line:rgba(255,255,255,.09);
      --text:#ecf2ff;
      --muted:#b7c1da;
      --pink:#ff4fd8;
      --purple:#9c6bff;
      --cyan:#4ee7ff;
      --gold:#ffcf6b;
      --ok:#5ff2c2;
      --shadow:0 18px 50px rgba(0,0,0,.35);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 20% 10%, rgba(255,79,216,.18), transparent 24%),
        radial-gradient(circle at 80% 12%, rgba(156,107,255,.20), transparent 22%),
        radial-gradient(circle at 50% 0%, rgba(78,231,255,.10), transparent 30%),
        linear-gradient(180deg, #090d1a 0%, #0c1020 35%, #0e1327 100%);
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed; inset:0;
      pointer-events:none;
      background-image:linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size:32px 32px;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.55), transparent 80%);
      opacity:.32;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header, main, footer{position:relative; z-index:1}
    .topbar{
      position:sticky; top:0; z-index:50;
      backdrop-filter: blur(16px);
      background:rgba(7,10,20,.72);
      border-bottom:1px solid var(--line);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:16px;
      min-height:72px;
    }
    .brand{display:flex; align-items:center; gap:12px; min-width:0}
    .brand .ai-page-logo{width:40px;height:40px;object-fit:contain;border-radius:10px;background:rgba(255,255,255,.05);padding:4px;border:1px solid var(--line)}
    .brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
    .brand-text strong{font-size:16px;letter-spacing:.5px}
    .brand-text span{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-links{display:flex; flex-wrap:wrap; align-items:center; gap:8px}
    .nav-links a{
      font-size:13px; color:#d8e2ff;
      padding:9px 12px; border:1px solid transparent; border-radius:999px;
      transition:.25s ease;
    }
    .nav-links a:hover,.nav-links a:focus-visible{border-color:rgba(255,255,255,.12); background:rgba(255,255,255,.05); transform:translateY(-1px)}
    .nav-actions{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      padding:12px 16px; border-radius:999px; border:1px solid transparent;
      font-weight:700; cursor:pointer; transition:.25s ease; white-space:nowrap;
    }
    .btn-primary{
      color:#130817;
      background:linear-gradient(135deg, var(--pink), var(--purple));
      box-shadow:0 14px 28px rgba(255,79,216,.18);
    }
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 18px 32px rgba(156,107,255,.23)}
    .btn-ghost{color:var(--text); background:rgba(255,255,255,.04); border-color:var(--line)}
    .btn-ghost:hover{background:rgba(255,255,255,.08); transform:translateY(-2px)}
    .menu-toggle{display:none}
    .hero{
      padding:52px 0 28px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.2fr .8fr; gap:22px; align-items:stretch;
    }
    .hero-card{
      position:relative; overflow:hidden;
      background:linear-gradient(180deg, rgba(17,26,49,.92), rgba(12,16,32,.9));
      border:1px solid rgba(255,255,255,.10);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:30px;
    }
    .hero-card::after{
      content:""; position:absolute; inset:auto -15% -35% auto; width:280px; height:280px; border-radius:50%;
      background:radial-gradient(circle, rgba(255,79,216,.24), transparent 66%);
      filter:blur(2px);
    }
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 12px; border-radius:999px;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(255,255,255,.04);
      color:#d7ddf3; font-size:13px;
    }
    h1{margin:14px 0 12px; font-size:clamp(30px, 4.8vw, 54px); line-height:1.08; letter-spacing:-.02em}
    .lead{margin:0; color:var(--muted); font-size:16px; line-height:1.8; max-width:58ch}
    .hero-points{
      display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:12px; margin:22px 0;
    }
    .point{
      padding:14px 14px 15px; border-radius:18px; background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.08)
    }
    .point strong{display:block; font-size:15px; margin-bottom:6px}
    .point span{display:block; color:var(--muted); font-size:13px; line-height:1.6}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:18px}
    .hero-meta{
      display:flex; flex-wrap:wrap; gap:10px; margin-top:18px; color:#dbe5ff; font-size:13px
    }
    .meta-pill{padding:8px 12px; border-radius:999px; background:rgba(255,255,255,.05); border:1px solid var(--line)}
    .side-stack{display:grid; gap:16px}
    .side-card{
      background:linear-gradient(180deg, rgba(21,31,57,.98), rgba(12,16,32,.96));
      border:1px solid rgba(255,255,255,.09);
      border-radius:24px; box-shadow:var(--shadow); padding:22px;
    }
    .stats{
      display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px;
    }
    .stat{
      padding:16px; border-radius:18px; background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.08)
    }
    .stat b{display:block; font-size:24px; color:#fff}
    .stat span{display:block; margin-top:5px; color:var(--muted); font-size:13px; line-height:1.5}
    .quick-links{display:flex; flex-wrap:wrap; gap:10px; margin-top:16px}
    .tag{
      display:inline-flex; align-items:center;
      padding:8px 11px; border-radius:999px;
      background:linear-gradient(135deg, rgba(255,79,216,.12), rgba(156,107,255,.12));
      border:1px solid rgba(255,255,255,.08);
      color:#f2ebff; font-size:12px;
    }
    section{padding:18px 0}
    .section-title{
      display:flex; align-items:end; justify-content:space-between; gap:14px;
      margin-bottom:16px;
    }
    .section-title h2{margin:0; font-size:clamp(22px, 3vw, 34px)}
    .section-title p{margin:0; color:var(--muted); max-width:68ch; line-height:1.7; font-size:14px}
    .grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .grid-4{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px}
    .card{
      background:linear-gradient(180deg, rgba(21,31,57,.95), rgba(14,19,36,.96));
      border:1px solid rgba(255,255,255,.08);
      border-radius:22px;
      padding:20px;
      box-shadow:0 12px 28px rgba(0,0,0,.22);
      transition:.25s ease;
    }
    .card:hover{transform:translateY(-4px); border-color:rgba(255,255,255,.14)}
    .card h3{margin:0 0 10px; font-size:18px}
    .card p,.card li{color:var(--muted); line-height:1.75; margin:0}
    .card ul{margin:0; padding-left:18px}
    .icon{
      width:44px; height:44px; border-radius:14px; display:grid; place-items:center;
      margin-bottom:14px; color:#fff; font-size:20px;
      background:linear-gradient(135deg, rgba(255,79,216,.18), rgba(78,231,255,.18));
      border:1px solid rgba(255,255,255,.09);
    }
    .split{
      display:grid; grid-template-columns:1fr 1fr; gap:14px; align-items:start;
    }
    .timeline{display:grid; gap:12px}
    .step{
      display:flex; gap:14px; align-items:flex-start;
      padding:18px; border-radius:20px; background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.08)
    }
    .num{
      width:34px; height:34px; flex:0 0 34px; border-radius:50%;
      display:grid; place-items:center; font-weight:800; color:#130817;
      background:linear-gradient(135deg, var(--gold), #fff2a0);
    }
    .table-wrap{overflow:auto; border-radius:22px; border:1px solid rgba(255,255,255,.08)}
    table{width:100%; border-collapse:collapse; min-width:860px; background:rgba(12,17,33,.92)}
    th,td{padding:16px 14px; text-align:left; border-bottom:1px solid rgba(255,255,255,.08); vertical-align:top}
    th{color:#fff; background:rgba(255,255,255,.04); font-size:14px}
    td{color:var(--muted); font-size:14px; line-height:1.65}
    .highlight{color:#fff; font-weight:700}
    .faq details{
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      border-radius:18px;
      padding:16px 18px;
    }
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer; list-style:none; font-weight:700; color:#fff}
    .faq summary::-webkit-details-marker{display:none}
    .faq .answer{margin-top:10px; color:var(--muted); line-height:1.75}
    .article-list{display:grid; gap:12px}
    .article-item{
      display:flex; justify-content:space-between; gap:16px; align-items:flex-start;
      padding:16px 18px; border-radius:18px; background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.08)
    }
    .article-item strong{display:block; margin-bottom:6px}
    .article-item span{color:var(--muted); font-size:13px; line-height:1.6}
    .article-item em{font-style:normal; color:#d4dfff; font-size:13px; white-space:nowrap}
    .reviews{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .review .name{display:flex; justify-content:space-between; gap:12px; align-items:center; margin-bottom:8px}
    .stars{color:#ffd86b; letter-spacing:1px}
    .form-grid{display:grid; grid-template-columns:1fr 1fr; gap:14px}
    .field{display:flex; flex-direction:column; gap:8px}
    label{font-size:13px; color:#dce4ff}
    input,select,textarea{
      width:100%;
      padding:13px 14px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.04);
      color:var(--text);
      outline:none;
      transition:.2s ease;
      font:inherit;
    }
    textarea{min-height:126px; resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(78,231,255,.5); box-shadow:0 0 0 4px rgba(78,231,255,.08)}
    .form-actions{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
    .footer{
      padding:24px 0 30px;
      border-top:1px solid var(--line);
      background:rgba(7,10,20,.92);
      color:#d8e2ff;
    }
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr; gap:18px}
    .footer a{color:#fff}
    .footer small,.footer p{color:#c8d1ea; line-height:1.7}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{padding:8px 10px; border-radius:999px; background:rgba(255,255,255,.04); border:1px solid var(--line)}
    .float-box{
      position:fixed; right:16px; bottom:18px; z-index:60;
      display:flex; flex-direction:column; gap:10px;
    }
    .float-btn{
      width:54px; height:54px; border-radius:18px; display:grid; place-items:center;
      background:linear-gradient(135deg, var(--pink), var(--purple));
      color:#120817; font-weight:900; box-shadow:0 16px 30px rgba(0,0,0,.25);
      border:1px solid rgba(255,255,255,.12);
    }
    .float-btn.secondary{background:rgba(255,255,255,.08); color:#fff}
    .floating-contact{
      position:fixed; right:18px; bottom:84px; z-index:60;
      width:min(320px, calc(100vw - 36px));
      background:linear-gradient(180deg, rgba(21,31,57,.98), rgba(12,16,32,.98));
      border:1px solid rgba(255,255,255,.10);
      border-radius:22px; box-shadow:var(--shadow);
      padding:16px; display:none;
    }
    .floating-contact.open{display:block}
    .floating-contact h3{margin:0 0 10px}
    .contact-row{display:grid; grid-template-columns:120px 1fr; gap:14px; align-items:center}
    .contact-row img{border-radius:16px; border:1px solid rgba(255,255,255,.08); background:#fff}
    .muted{color:var(--muted)}
    .banner-row{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    .ai-page-image{border-radius:18px; border:1px solid rgba(255,255,255,.08); box-shadow:var(--shadow)}
    .container .spaced{margin-top:4px}
    .table-note{margin-top:10px; color:var(--muted); font-size:13px}
    .chip-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .chip-cloud .tag{background:rgba(255,255,255,.05)}
    .section-anchor{scroll-margin-top:92px}
    .mobile-only{display:none}
    .hero-cta-note{font-size:13px;color:#d7ddf3}
    .center-note{display:flex; flex-wrap:wrap; gap:10px; align-items:center}
    .compare-score{
      display:flex; gap:12px; flex-wrap:wrap; align-items:center; margin-top:16px
    }
    .score{
      padding:14px 16px; border-radius:18px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08)
    }
    .score b{display:block; font-size:22px; color:#fff}
    .score span{color:var(--muted); font-size:13px}
    @media (max-width: 960px){
      .hero-grid,.split,.footer-grid,.reviews,.grid-4,.grid-3{grid-template-columns:1fr}
      .hero-points,.stats,.form-grid{grid-template-columns:1fr 1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .nav.open .nav-links{
        display:flex; position:absolute; left:16px; right:16px; top:72px;
        flex-direction:column; align-items:stretch; padding:12px; border-radius:18px;
        background:rgba(10,14,26,.96); border:1px solid rgba(255,255,255,.10);
      }
      .nav.open .nav-links a{padding:12px 14px}
      .hero{padding-top:26px}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero-card,.card,.side-card{padding:18px}
      .hero-points,.stats,.form-grid,.banner-row{grid-template-columns:1fr}
      .nav-actions .btn-ghost{display:none}
      .article-item{flex-direction:column}
      .contact-row{grid-template-columns:1fr}
      .mobile-only{display:block}
    }
    .reveal{opacity:0; transform:translateY(18px); transition:.7s ease}
    .reveal.in{opacity:1; transform:none}