:root{
      --bg:#f7f8fc;
      --bg-2:#ffffff;
      --card:#ffffff;
      --text:#102033;
      --muted:#5f6b7a;
      --line:#e7ebf2;
      --brand:#5b6cff;
      --brand-2:#00c2ff;
      --accent:#8b5cf6;
      --ok:#10b981;
      --warn:#f59e0b;
      --shadow:0 18px 50px rgba(15, 23, 42, .08);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(91,108,255,.10), transparent 30%),
        radial-gradient(circle at top right, rgba(0,194,255,.08), transparent 26%),
        linear-gradient(180deg,#fbfcff 0%, #f7f8fc 100%);
      line-height:1.65;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    header{
      position:sticky;top:0;z-index:40;
      backdrop-filter:saturate(150%) blur(14px);
      background:rgba(247,248,252,.84);
      border-bottom:1px solid rgba(231,235,242,.9);
    }
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    nav{display:flex;align-items:center;gap:16px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:var(--text);opacity:.84}
    .nav-links a:hover{color:var(--brand)}
    .top-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;font-size:14px;transition:.25s ease;cursor:pointer;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(91,108,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(91,108,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#cfd7e8}
    .menu-toggle{
      display:none;border:1px solid var(--line);background:#fff;border-radius:12px;
      width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;
    }
    .menu-toggle span,.menu-toggle span:before,.menu-toggle span:after{
      content:"";display:block;width:18px;height:2px;background:#263244;border-radius:2px;position:relative
    }
    .menu-toggle span:before{position:absolute;top:-6px}
    .menu-toggle span:after{position:absolute;top:6px}
    main{padding:18px 0 26px}
    section{padding:28px 0}
    .hero{padding-top:18px}
    .hero-grid{
      display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:stretch
    }
    .hero-panel,.info-panel,.card,.faq-item,.review-card,.article-card,.metric,.form-wrap,.table-wrap,.timeline,.price-box,.network-box{
      background:rgba(255,255,255,.92);border:1px solid rgba(231,235,242,.95);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-panel{padding:34px;position:relative;overflow:hidden}
    .hero-panel:before{
      content:"";position:absolute;inset:auto -20% -45% auto;width:340px;height:340px;border-radius:50%;
      background:radial-gradient(circle, rgba(91,108,255,.16), transparent 62%);
      pointer-events:none
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(91,108,255,.10);color:#3346c8;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(32px, 5vw, 54px);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-note{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;color:var(--muted);font-size:14px}
    .hero-note span{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff}
    .hero-side{display:grid;gap:16px}
    .info-panel{padding:22px}
    .stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{padding:18px;background:linear-gradient(180deg,#ffffff 0%, #f9fbff 100%);box-shadow:none}
    .metric strong{display:block;font-size:26px;line-height:1;color:#17263c}
    .metric span{display:block;margin-top:8px;color:var(--muted);font-size:13px}
    .panel-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px;font-size:18px}
    .panel-title small{color:var(--muted);font-weight:500}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#f3f6ff;border:1px solid #dfe6ff;color:#344b94;font-size:13px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{padding:22px}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted)}
    .icon-badge{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(91,108,255,.12),rgba(0,194,255,.12));color:#3648b8;font-weight:800;margin-bottom:14px
    }
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:20px 18px;border-radius:18px;background:#fff;border:1px solid var(--line);position:relative}
    .step strong{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:#17263c;color:#fff;margin-bottom:14px}
    .step h3{margin:0 0 8px;font-size:17px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .compare{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}
    th{background:#f6f8ff;color:#24324a;font-size:13px}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .badge.good{background:rgba(16,185,129,.12);color:#0f7a57}
    .badge.warn{background:rgba(245,158,11,.13);color:#b26b00}
    .badge.brand{background:rgba(91,108,255,.12);color:#3346c8}
    .split-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    .timeline{padding:20px}
    .timeline ul{list-style:none;padding:0;margin:0;display:grid;gap:14px}
    .timeline li{display:grid;grid-template-columns:28px 1fr;gap:12px;align-items:start}
    .dot{width:14px;height:14px;border-radius:50%;margin-top:6px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 0 6px rgba(91,108,255,.12)}
    .timeline h3,.review-card h3,.article-card h3{margin:0 0 6px;font-size:16px}
    .timeline p,.review-card p,.article-card p{margin:0;color:var(--muted);font-size:14px}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review-card{padding:20px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
    .stars{color:#f59e0b;letter-spacing:1px}
    .articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article-card{padding:20px}
    .article-link{display:inline-flex;margin-top:12px;color:#3346c8;font-weight:700}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;color:var(--text);padding:18px 20px;font-size:16px;font-weight:700;
      display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;text-align:left
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-item.active .faq-a{max-height:180px;padding-bottom:18px}
    .faq-item.active .faq-q .chev{transform:rotate(180deg)}
    .chev{transition:transform .25s ease;color:var(--muted)}
    .form-wrap{padding:22px}
    form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
    input,select,textarea{
      width:100%;border:1px solid #dce3ee;background:#fff;border-radius:14px;padding:12px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#8aa0ff;box-shadow:0 0 0 4px rgba(91,108,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .footer{
      padding:24px 0 28px;border-top:1px solid var(--line);background:#f6f8fc;color:var(--text)
    }
    .footer a{color:#3346c8}
    .footer-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
    .footer small,.footer p,.footer li{color:#546273}
    .footer ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;border:1px solid var(--line);background:#fff;border-radius:999px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:50;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 14px 30px rgba(91,108,255,.25);display:grid;place-items:center;color:#fff;font-weight:900
    }
    .float-contact{
      position:fixed;left:18px;bottom:18px;z-index:50;background:#fff;border:1px solid var(--line);border-radius:18px;
      box-shadow:var(--shadow);padding:12px;display:flex;align-items:center;gap:12px;max-width:320px
    }
    .float-contact img{width:76px;height:76px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
    .float-contact p{margin:0;font-size:13px;color:var(--muted)}
    .float-contact strong{display:block;color:var(--text);margin-bottom:4px}
    .mobile-panel{display:none}
    .mini-caps{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
    .mini-caps span{padding:7px 10px;border-radius:999px;background:#f4f7ff;border:1px solid #dfe6ff;font-size:12px;color:#4152a6}
    .price-box,.network-box{padding:20px}
    .price-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .price-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:14px;background:#f8faff;border:1px solid var(--line)}
    .price-list span{color:var(--muted);font-size:13px}
    .network-list{display:flex;flex-wrap:wrap;gap:10px}
    .network-list a{padding:9px 12px;border:1px dashed #d8def1;border-radius:999px;background:#fff;color:#24324a}
    .scroll-x{overflow:auto}
    .image-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .image-strip .card{padding:14px}
    .image-strip .ai-page-image{border-radius:16px;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--line)}
    .logo-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
    .logo-row .ai-page-logo{width:58px;height:58px;object-fit:contain;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .center-cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-start}
    .muted{color:var(--muted)}
    .reveal{animation:fadeUp .7s ease both}
    @keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
    @media (max-width: 1024px){
      .hero-grid,.split-layout,.footer-grid{grid-template-columns:1fr}
      .grid-3,.grid-2,.reviews,.articles,.workflow{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 760px){
      .container{width:min(100% - 20px, var(--container))}
      .nav-links,.top-actions{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.open{display:block}
      .mobile-panel .nav-links{display:grid;gap:10px;padding:12px 0}
      .mobile-panel .nav-links a{padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff}
      .hero-panel{padding:24px}
      .grid-3,.grid-2,.reviews,.articles,.workflow,.form-grid,.image-strip{grid-template-columns:1fr}
      h1{font-size:34px}
      .section-head{flex-direction:column;align-items:flex-start}
      .float-contact{display:none}
      .floating{right:12px;bottom:12px}
      .stats{grid-template-columns:1fr 1fr}
      table{min-width:900px}
    }