:root{
      --bg:#f6f7fb;
      --panel:#ffffff;
      --panel-2:#f3f6ff;
      --text:#172033;
      --muted:#5f6b84;
      --line:#dbe3f1;
      --primary:#1f67ff;
      --accent:#7c3aed;
      --accent2:#19c3ff;
      --success:#12b981;
      --shadow:0 18px 40px rgba(29, 58, 121, .10);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 20% 0%, rgba(31,103,255,.08), transparent 30%),
        radial-gradient(circle at 90% 10%, rgba(124,58,237,.10), transparent 25%),
        linear-gradient(180deg,#f9fbff 0%, #f6f7fb 30%, #f4f7fc 100%);
    }
    img{display:block;max-width:100%;height:auto}
    a{color:var(--primary);text-decoration:none}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:40;
      backdrop-filter:blur(14px);
      background:rgba(246,247,251,.82);
      border-bottom:1px solid rgba(219,227,241,.85);
    }
    .nav{
      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(31,103,255,.10)}
    .brand h1{font-size:18px;margin:0;line-height:1.15}
    .brand p{margin:4px 0 0;color:var(--muted);font-size:12px}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-btn,.ghost-btn,.primary-btn,.secondary-btn,.toplink{
      border:0;border-radius:999px;cursor:pointer;transition:.25s ease;
      font:inherit
    }
    .menu-btn{display:none;padding:10px 12px;background:#fff;color:var(--text);box-shadow:var(--shadow)}
    .primary-btn,.secondary-btn,.ghost-btn,.toplink{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:11px 16px;font-weight:700
    }
    .primary-btn,.toplink{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 12px 24px rgba(31,103,255,.22)}
    .secondary-btn,.ghost-btn{background:#fff;color:var(--text);border:1px solid var(--line)}
    .primary-btn:hover,.secondary-btn:hover,.ghost-btn:hover,.toplink:hover,.card:hover,.review:hover,.step:hover,.service:hover,.faq-item:hover{transform:translateY(-2px)}
    .toplinks{
      display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:flex-end
    }
    .toplinks a{font-size:13px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.75);border:1px solid var(--line);color:var(--text)}
    .mobile-panel{display:none;padding:0 0 14px}
    .mobile-panel .links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .mobile-panel a{padding:11px 12px;border-radius:14px;background:#fff;border:1px solid var(--line);color:var(--text);font-weight:600}
    .hero{
      padding:42px 0 24px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch
    }
    .hero-card{
      background:linear-gradient(135deg, rgba(31,103,255,.10), rgba(124,58,237,.10) 52%, rgba(25,195,255,.08));
      border:1px solid rgba(219,227,241,.9);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:30px;
      position:relative;
      overflow:hidden;
    }
    .hero-card::before,.hero-card::after{
      content:"";position:absolute;border-radius:50%;filter:blur(4px);pointer-events:none
    }
    .hero-card::before{width:220px;height:220px;right:-70px;top:-70px;background:radial-gradient(circle, rgba(25,195,255,.22), transparent 65%)}
    .hero-card::after{width:180px;height:180px;left:-50px;bottom:-60px;background:radial-gradient(circle, rgba(124,58,237,.18), transparent 65%)}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.8);
      border:1px solid rgba(219,227,241,.9);color:var(--muted);font-size:13px;font-weight:600
    }
    h1{font-size:clamp(30px, 4vw, 54px);line-height:1.06;margin:16px 0 14px}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:24px}
    .point{background:rgba(255,255,255,.86);border:1px solid rgba(219,227,241,.95);border-radius:18px;padding:14px}
    .point strong{display:block;font-size:15px;margin-bottom:6px}
    .point span{color:var(--muted);font-size:13px;line-height:1.6}
    .hero-side{
      display:grid;gap:14px;
    }
    .mini-panel,.score-panel,.contact-panel,.service-panel{
      background:rgba(255,255,255,.92);
      border:1px solid var(--line);
      border-radius:24px;
      box-shadow:var(--shadow);
      padding:20px;
    }
    .stats{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px
    }
    .stat{
      background:linear-gradient(180deg,#fff, #f7faff);
      border:1px solid var(--line);border-radius:18px;padding:16px
    }
    .stat b{display:block;font-size:24px;margin-bottom:4px}
    .stat span{font-size:13px;color:var(--muted)}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:58ch;line-height:1.7}
    .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,.service,.step,.review,.news-item,.faq-item,.compare, .contact-panel, .mini-panel, .score-panel, .service-panel{
      transition:.25s ease
    }
    .card,.service,.step,.review,.news-item{
      background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)
    }
    .card{padding:18px}
    .card h3,.service h3,.step h3,.review h3{margin:0 0 8px;font-size:18px}
    .card p,.service p,.step p,.review p,.news-item p{margin:0;color:var(--muted);line-height:1.75}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(31,103,255,.14), rgba(124,58,237,.14));
      color:var(--primary);font-size:20px;margin-bottom:12px
    }
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);
      color:#364156;font-size:13px
    }
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:18px}
    .step .num{
      display:inline-flex;width:34px;height:34px;border-radius:999px;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:700;margin-bottom:12px
    }
    .compare-wrap{overflow-x:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:15px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f4f7ff;color:#22304b;font-size:14px}
    td{color:#39455f;font-size:14px;line-height:1.65}
    .highlight{font-weight:800;color:var(--primary)}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
    .faq-q{
      width:100%;text-align:left;background:none;border:0;padding:16px 18px;cursor:pointer;
      display:flex;justify-content:space-between;align-items:center;gap:10px;font:inherit;color:var(--text);font-weight:700
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px;color:var(--muted);line-height:1.75}
    .faq-item.open .faq-a{padding-bottom:16px;max-height:220px}
    .faq-item.open .faq-q .arrow{transform:rotate(180deg)}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .review{padding:18px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:10px}
    .badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(31,103,255,.10);color:var(--primary);font-size:12px;font-weight:700}
    .news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .news-item{padding:18px}
    .news-item time{display:block;color:var(--muted);font-size:12px;margin-bottom:8px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700;color:#24324d}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);
      padding:12px 14px;font:inherit;outline:none;transition:.2s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(31,103,255,.6);box-shadow:0 0 0 4px rgba(31,103,255,.08)}
    .full{grid-column:1/-1}
    .contact-strip{
      display:grid;grid-template-columns:1.1fr .9fr;gap:14px;align-items:start
    }
    .qrcode{
      display:flex;gap:14px;align-items:center
    }
    .qrcode img{width:130px;aspect-ratio:1/1;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:50;display:flex;flex-direction:column;gap:10px
    }
    .floating a,.floating button{
      width:48px;height:48px;border-radius:50%;border:0;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 14px 24px rgba(31,103,255,.25);cursor:pointer
    }
    footer{
      margin-top:18px;padding:22px 0 28px;background:#0f172a;color:#dbe7ff
    }
    footer .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    footer a{color:#9fd0ff}
    .footer-note{color:#a8bbdc;line-height:1.8;font-size:14px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10)}
    .small{font-size:13px;color:var(--muted)}
    .timeline{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .timeline .card{position:relative}
    .timeline .card::before{
      content:"";position:absolute;left:18px;top:18px;width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 0 0 6px rgba(31,103,255,.08)
    }
    .timeline .card{padding-left:42px}
    .service-network{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .service-network .card{padding:16px}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill-row span{padding:8px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px}
    .anchors{display:flex;flex-wrap:wrap;gap:8px}
    .anchors a{padding:8px 10px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--text);font-size:13px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .article-list{display:grid;gap:10px}
    .article-list a{display:flex;justify-content:space-between;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text)}
    .article-list a span{color:var(--primary);font-weight:700}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.contact-strip,.split,footer .footer-grid,.grid-3,.grid-4,.reviews,.news-grid,.steps,.timeline,.service-network,.hero-points,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .toplinks{display:none}
      .menu-btn{display:inline-grid}
      .mobile-panel.show{display:block}
      .nav{padding:12px 0}
    }