:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-soft:#f3f6ff;
      --line:#dfe5f2;
      --text:#172033;
      --muted:#5e6a83;
      --brand:#5d5cf6;
      --brand2:#17b8ff;
      --brand3:#8f5bff;
      --accent:#21d4a6;
      --shadow:0 18px 50px rgba(22,34,70,.10);
      --radius:22px;
      --radius-sm:16px;
      --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(93,92,246,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(23,184,255,.12), transparent 24%),
        linear-gradient(180deg, #f9fbff 0%, #f4f7ff 52%, #f7f8fc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(18px);
      background:rgba(247,248,252,.78);
      border-bottom:1px solid rgba(223,229,242,.9);
    }
    .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}
    .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 24px rgba(24,31,54,.08)}
    .brand h2{font-size:16px;line-height:1.2;margin:0;color:#10182a}
    .brand p{margin:3px 0 0;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:13px;color:#31405c;padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:rgba(93,92,246,.08);color:var(--brand)}
    .nav-cta{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;font-weight:700;border:1px solid transparent;
      transition:.25s ease; cursor:pointer;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));
      box-shadow:0 14px 30px rgba(93,92,246,.22);
    }
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 40px rgba(93,92,246,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:rgba(93,92,246,.35);color:var(--brand)}
    .menu-toggle{display:none}
    .hero{padding:38px 0 20px}
    .hero-shell{
      position:relative;overflow:hidden;
      background:
        linear-gradient(135deg, rgba(93,92,246,.10), rgba(23,184,255,.09)),
        linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.86));
      border:1px solid rgba(223,229,242,.95);
      border-radius:32px;
      box-shadow:var(--shadow);
      padding:34px;
    }
    .hero-shell::before,.hero-shell::after{
      content:"";position:absolute;border-radius:50%;pointer-events:none
    }
    .hero-shell::before{width:240px;height:240px;right:-80px;top:-80px;background:radial-gradient(circle, rgba(33,212,166,.20), transparent 66%)}
    .hero-shell::after{width:180px;height:180px;left:-50px;bottom:-70px;background:radial-gradient(circle, rgba(93,92,246,.18), transparent 66%)}
    .hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:28px;align-items:center;position:relative;z-index:1}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:rgba(93,92,246,.08);color:var(--brand);
      font-size:13px;font-weight:700;margin-bottom:16px
    }
    h1{font-size:clamp(30px,5vw,54px);line-height:1.06;margin:0 0 16px;letter-spacing:-.02em}
    .lead{font-size:17px;line-height:1.85;color:var(--muted);margin:0 0 22px;max-width:62ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .metric{
      background:rgba(255,255,255,.74);border:1px solid rgba(223,229,242,.95);border-radius:18px;padding:14px 14px 12px
    }
    .metric strong{display:block;font-size:22px;line-height:1;color:#10182a}
    .metric span{display:block;margin-top:6px;font-size:12px;color:var(--muted);line-height:1.5}
    .hero-panel{
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(245,248,255,.92));
      border:1px solid rgba(223,229,242,.95);
      border-radius:26px;padding:20px;
    }
    .panel-title{font-size:15px;font-weight:800;margin:0 0 12px}
    .chip-wrap{display:flex;flex-wrap:wrap;gap:10px}
    .chip{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#2d3a52;font-size:12px
    }
    section{padding:20px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:18px}
    .section-title h2{font-size:28px;line-height:1.2;margin:0}
    .section-title p{margin:0;color:var(--muted);font-size:14px;max-width:62ch}
    .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{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(223,229,242,.98);
      border-radius:var(--radius);
      box-shadow:0 10px 30px rgba(21,32,54,.06);
      padding:22px;
      transition:.25s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(21,32,54,.10)}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(93,92,246,.12), rgba(23,184,255,.14));
      color:var(--brand);font-size:20px;font-weight:900;margin-bottom:12px
    }
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .list{margin:0;padding-left:18px}
    .subtle{
      background:linear-gradient(180deg, rgba(93,92,246,.06), rgba(255,255,255,.86));
      border:1px solid rgba(223,229,242,.95);
      border-radius:28px;padding:24px
    }
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:15px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f6f8ff;font-size:14px}
    td{font-size:14px;color:#2c3750}
    .highlight{color:var(--brand);font-weight:800}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{
      position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;
    }
    .step-num{
      width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;margin-bottom:12px
    }
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:start}
    .timeline-item .year{
      font-weight:800;color:var(--brand);background:rgba(93,92,246,.08);padding:10px 12px;border-radius:14px;text-align:center
    }
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review small{color:var(--brand);font-weight:800}
    .stars{letter-spacing:2px;color:#f5b400;font-size:18px;margin:8px 0 10px}
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px
    }
    .faq details + details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:12px 0 0;color:var(--muted);line-height:1.8}
    .articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article{display:flex;flex-direction:column;gap:10px}
    .article time{font-size:12px;color:var(--muted)}
    .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);font-size:12px;color:#31405c}
    .price{
      display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px
    }
    .price .card{border-top:4px solid transparent}
    .price .card:nth-child(1){border-top-color:var(--brand)}
    .price .card:nth-child(2){border-top-color:var(--accent)}
    .price .card:nth-child(3){border-top-color:var(--brand2)}
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1 / -1}
    label{font-size:13px;font-weight:700;color:#29344a}
    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:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(93,92,246,.55);box-shadow:0 0 0 4px rgba(93,92,246,.10)}
    textarea{min-height:126px;resize:vertical}
    .footer{
      margin-top:22px;padding:22px 0 34px;border-top:1px solid rgba(223,229,242,.95);
      background:linear-gradient(180deg, rgba(247,248,252,1), rgba(243,246,255,1));
      color:#243046
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer a{color:#2e4bd8}
    .footer .muted{color:#5f6981;line-height:1.8}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
    .footer-links a{padding:8px 10px;border:1px solid var(--line);border-radius:999px;background:#fff}
    .float-box{
      position:fixed;right:18px;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(--brand),var(--brand2));color:#fff;box-shadow:0 18px 35px rgba(93,92,246,.26)
    }
    .backtop{opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s ease}
    .backtop.show{opacity:1;pointer-events:auto;transform:none}
    .qrcode{
      display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center
    }
    .qrcode img{border-radius:16px;border:1px solid var(--line);background:#fff}
    .gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .gallery .card{padding:16px}
    .ai-page-image{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#eef2ff}
    .mini-note{font-size:12px;color:var(--muted);line-height:1.7}
    .mobile-only{display:none}
    .sr{position:absolute;left:-9999px}
    @media (max-width: 1080px){
      .hero-grid,.grid-3,.grid-2,.steps,.reviews,.articles,.gallery,.price,.footer-grid{grid-template-columns:1fr}
      .timeline-item{grid-template-columns:1fr}
      .hero-metrics{grid-template-columns: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:flex-start;
        background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)
      }
      .nav{position:relative}
      .hero-shell{padding:22px}
      .section-title{align-items:flex-start;flex-direction:column}
      .form{grid-template-columns:1fr}
      .qrcode{grid-template-columns:1fr}
      .mobile-only{display:block}
    }