:root{
      --bg:#f5f8fb;
      --panel:#ffffff;
      --panel2:#eef8fb;
      --text:#163042;
      --muted:#5e7280;
      --line:#dce8ee;
      --primary:#128aa6;
      --primary2:#16b4c8;
      --accent:#0f6f87;
      --shadow:0 18px 45px rgba(18,138,166,.12);
      --shadow2:0 10px 24px rgba(22,180,200,.12);
      --radius:22px;
      --radius2:16px;
      --max:1200px;
    }
    *{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;
      background:
        radial-gradient(circle at top left, rgba(22,180,200,.10), transparent 30%),
        radial-gradient(circle at top right, rgba(18,138,166,.10), transparent 26%),
        linear-gradient(180deg, #f9fcfe 0%, #f4f8fb 50%, #f7fafc 100%);
      color:var(--text);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(249,252,254,.84);
      border-bottom:1px solid rgba(220,232,238,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;padding:5px;border:1px solid var(--line)}
    .brand h2{margin:0;font-size:16px;line-height:1.2}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:12px;padding:10px 12px;font-weight:700
    }
    .menu{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{
      font-size:14px;color:var(--text);padding:9px 10px;border-radius:999px;
      transition:.2s ease;background:transparent
    }
    .menu a:hover,.menu a.active{background:rgba(18,138,166,.10);color:var(--accent)}
    .home-link{
      padding:10px 14px;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--primary2));
      color:#fff !important;font-weight:700;box-shadow:var(--shadow2)
    }
    main{overflow:hidden}
    section{padding:28px 0}
    .hero{
      padding:34px 0 18px;
      position:relative;
    }
    .hero-card{
      position:relative;overflow:hidden;
      background:
        linear-gradient(135deg, rgba(18,138,166,.96), rgba(22,180,200,.92)),
        linear-gradient(135deg, #0f6f87, #18bfd0);
      color:#fff;border-radius:30px;padding:34px;
      box-shadow:0 22px 50px rgba(15,111,135,.22);
    }
    .hero-card::before,.hero-card::after{
      content:"";position:absolute;border-radius:999px;background:rgba(255,255,255,.12);filter:blur(2px)
    }
    .hero-card::before{width:220px;height:220px;right:-70px;top:-60px}
    .hero-card::after{width:140px;height:140px;left:-40px;bottom:-30px}
    .hero-grid{
      position:relative;z-index:1;
      display:grid;grid-template-columns:1.4fr .9fr;gap:24px;align-items:start
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.04em;color:#d8fbff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.14);padding:8px 12px;border-radius:999px}
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.05}
    .lead{margin:0 0 22px;max-width:58ch;font-size:16px;line-height:1.85;color:#e8fbff}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:none;border-radius:14px;padding:13px 18px;font-weight:700;cursor:pointer;
      transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
    }
    .btn:hover{transform:translateY(-1px)}
    .btn-primary{background:#fff;color:#0f6f87;box-shadow:0 12px 28px rgba(255,255,255,.16)}
    .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.18)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .point{
      background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);
      border-radius:18px;padding:14px
    }
    .point strong{display:block;font-size:20px;margin-bottom:4px}
    .point span{display:block;color:#e6fbff;font-size:13px;line-height:1.5}
    .hero-side{
      background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);
      border-radius:24px;padding:18px
    }
    .hero-side h3{margin:0 0 12px;font-size:18px;color:#fff}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{
      background:rgba(255,255,255,.12);color:#f1feff;border:1px solid rgba(255,255,255,.14);
      padding:8px 11px;border-radius:999px;font-size:13px
    }
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;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:62ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{
      background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
      box-shadow:var(--shadow);padding:20px;transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 20px 44px rgba(18,138,166,.14);border-color:#c8e6ee}
    .metric{font-size:34px;font-weight:800;color:var(--accent);line-height:1}
    .metric-label{margin-top:10px;color:var(--muted);font-size:14px;line-height:1.65}
    .subtle{background:linear-gradient(180deg,#fff, #f7fcfe)}
    .icon-badge{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(18,138,166,.12), rgba(22,180,200,.14));color:var(--primary);
      margin-bottom:14px;font-weight:800
    }
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .card ul{margin:0;padding-left:18px}
    .steps{counter-reset:step}
    .step{
      position:relative;padding-top:8px
    }
    .step::before{
      counter-increment:step;content:counter(step, decimal-leading-zero);
      display:inline-flex;align-items:center;justify-content:center;
      width:44px;height:44px;border-radius:14px;margin-bottom:12px;
      background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;font-weight:800
    }
    .table-wrap{overflow: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:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f4fbfd;color:#163042;font-size:14px}
    td{color:var(--muted);font-size:14px;line-height:1.7}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;
      background:#e9f8fb;color:#0f6f87;font-size:12px;font-weight:700
    }
    .review-grid,.faq-grid,.article-grid,.service-net{
      display:grid;grid-template-columns:repeat(3,1fr);gap:16px
    }
    details{
      background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow2)
    }
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    details p{margin:12px 0 0;color:var(--muted);line-height:1.75}
    .review{
      display:flex;flex-direction:column;gap:12px
    }
    .review .who{display:flex;justify-content:space-between;gap:12px;align-items:center}
    .stars{color:#f0a500;font-size:15px;letter-spacing:1px}
    .form-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    form{
      display:grid;gap:12px
    }
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);
      padding:13px 14px;font:inherit;outline:none;transition:border-color .15s ease, box-shadow .15s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#9ad8e4;box-shadow:0 0 0 4px rgba(18,138,166,.08)}
    .mini-list{display:grid;gap:10px}
    .mini-item{
      display:flex;justify-content:space-between;gap:10px;align-items:center;
      padding:12px 14px;background:#f7fcfe;border:1px solid var(--line);border-radius:14px
    }
    .mini-item span:last-child{color:var(--muted);font-weight:700}
    .timeline{display:grid;gap:12px}
    .timeline .t{
      display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:start;
      padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)
    }
    .timeline .t strong{color:var(--accent)}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a,.link-chip{
      display:inline-flex;padding:8px 11px;border-radius:999px;background:#edf8fb;color:#0f6f87;font-size:13px
    }
    footer{
      padding:24px 0 34px;background:#eef7fa;border-top:1px solid var(--line);color:var(--text)
    }
    footer a{color:#0f6f87}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .contact-card{
      display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center
    }
    .contact-card img{border-radius:16px;border:1px solid var(--line);background:#fff;padding:4px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;
      box-shadow:0 14px 34px rgba(18,138,166,.28);font-weight:800
    }
    .scroll-top{opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s ease}
    .scroll-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .floating-qrcode{
      position:absolute;right:64px;bottom:0;width:190px;background:#fff;border:1px solid var(--line);
      border-radius:18px;padding:10px;box-shadow:var(--shadow);display:none
    }
    .floating:hover .floating-qrcode{display:block}
    .ai-page-image{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .anchor-space{scroll-margin-top:94px}
    .muted{color:var(--muted)}
    .topline{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
    .topline .badge{background:rgba(255,255,255,.12);color:#f4feff;border-color:rgba(255,255,255,.16)}
    .price-box{
      display:grid;gap:12px
    }
    .price-row{
      display:flex;justify-content:space-between;gap:12px;align-items:center;
      padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#fff
    }
    .price-row strong{color:var(--accent)}
    .article-list{display:grid;gap:10px}
    .article-item{
      display:flex;justify-content:space-between;gap:12px;align-items:center;
      padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fff
    }
    .article-item small{color:var(--muted)}
    @media (max-width: 1024px){
      .hero-grid,.form-grid,.footer-grid{grid-template-columns:1fr}
      .grid-3,.review-grid,.faq-grid,.article-grid,.service-net,.grid-2{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 720px){
      .container{width:min(var(--max), calc(100% - 22px))}
      .nav-toggle{display:inline-flex}
      .menu{
        display:none;position:absolute;left:0;right:0;top:76px;background:rgba(249,252,254,.98);
        padding:12px 16px 18px;border-bottom:1px solid var(--line);box-shadow:0 18px 40px rgba(12,50,69,.08)
      }
      .menu.open{display:flex;flex-direction:column;align-items:stretch}
      .menu a{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line)}
      .hero-card{padding:22px;border-radius:24px}
      .hero-points,.grid-3,.review-grid,.faq-grid,.article-grid,.service-net,.grid-2{grid-template-columns:1fr}
      .contact-card{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .timeline .t{grid-template-columns:1fr}
    }