:root{
      --bg:#fff9f3;
      --panel:#ffffff;
      --panel-2:#fff2e8;
      --text:#1f2a37;
      --muted:#5f6b7a;
      --line:#eedfd4;
      --brand:#ff5a1f;
      --brand-2:#ffb703;
      --brand-3:#2563eb;
      --shadow:0 18px 50px rgba(31,42,55,.08);
      --shadow-2:0 12px 28px rgba(255,90,31,.16);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,90,31,.10), transparent 30%),
        radial-gradient(circle at top right, rgba(37,99,235,.08), transparent 26%),
        linear-gradient(180deg,#fffdfb 0%, #fff8f1 42%, #fff 100%);
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(255,251,247,.82);
      border-bottom:1px solid rgba(238,223,212,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      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;border:1px solid var(--line);padding:4px;box-shadow:0 8px 20px rgba(31,42,55,.06)}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .menu-btn{
      display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;color:var(--text)
    }
    .nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#334155;padding:8px 10px;border-radius:999px;transition:.25s ease}
    .nav-links a:hover,.nav-links a.active{background:#fff0e8;color:#c2410c}
    .hero{
      position:relative;
      padding:44px 0 24px;
    }
    .hero-wrap{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-copy{
      background:linear-gradient(135deg, #fff 0%, #fff8f2 58%, #fff3e5 100%);
      border:1px solid rgba(255,90,31,.12);
      border-radius:30px;
      padding:30px;
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .hero-copy:before{
      content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle, rgba(255,90,31,.14), transparent 68%);
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff0e6;color:#c2410c;border:1px solid rgba(255,90,31,.16);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(32px,5vw,56px);line-height:1.05;letter-spacing:-.02em}
    .lead{margin:0;color:#344255;font-size:16px;line-height:1.85;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.25s ease;
      cursor:pointer;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff7a18);color:#fff;box-shadow:var(--shadow-2)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#ffb28d;color:#c2410c;transform:translateY(-2px)}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
    .chip{padding:9px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:13px;color:#314155}
    .hero-side{
      display:grid;gap:14px
    }
    .hero-stat{
      background:linear-gradient(180deg,#1f2937 0%, #111827 100%);
      color:#fff;border-radius:26px;padding:22px;border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow)
    }
    .hero-stat .num{font-size:36px;font-weight:800;line-height:1}
    .hero-stat p{margin:10px 0 0;color:rgba(255,255,255,.82);line-height:1.7}
    .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .mini-card{
      background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)
    }
    .mini-card strong{display:block;font-size:15px;margin-bottom:6px}
    .mini-card span{color:var(--muted);font-size:13px;line-height:1.7}
    section{padding:22px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-title h2{margin:0;font-size:28px;line-height:1.1}
    .section-title p{margin:0;color:var(--muted);max-width:58ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .card{
      background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
      padding:20px;box-shadow:var(--shadow);transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease
    }
    .card:hover{transform:translateY(-4px);box-shadow:0 22px 48px rgba(31,42,55,.10);border-color:#f7c7b2}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:14px;
      background:linear-gradient(135deg,#fff0e6,#fff);border:1px solid #ffd7c3;color:#c2410c;font-size:20px
    }
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75;font-size:14px}
    .card ul{margin:0;padding-left:18px}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .stat{
      background:linear-gradient(180deg,#fff 0%, #fff6ef 100%);
      border:1px solid rgba(255,90,31,.12);border-radius:22px;padding:20px;box-shadow:var(--shadow)
    }
    .stat strong{font-size:28px;display:block;color:#d9480f}
    .stat span{display:block;margin-top:8px;color:var(--muted);line-height:1.7;font-size:14px}
    .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{
      position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)
    }
    .step .n{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:#111827;color:#fff;font-weight:700;margin-bottom:12px}
    .step h3{margin:0 0 8px;font-size:17px}
    .step p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:920px}
    th,td{padding:15px 14px;border-bottom:1px solid #f1e7df;text-align:left;vertical-align:top;font-size:14px}
    th{background:#fff8f2;color:#0f172a}
    tr:last-child td{border-bottom:none}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 12px;font-size:13px;color:#334155}
    .split{
      display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start
    }
    .image-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .image-grid .media{
      border-radius:22px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)
    }
    .image-grid .media img{width:100%;height:auto;display:block}
    .comments,.faq,.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote{position:relative}
    .quote:before{content:"“";position:absolute;right:16px;top:-8px;font-size:56px;color:#ffd4c1;line-height:1}
    .price-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price{
      background:linear-gradient(180deg,#fff 0%, #fff7f2 100%);
      border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)
    }
    .price strong{font-size:24px;color:#ea580c}
    .price ul{margin:14px 0 0;padding-left:18px}
    .faq-item{
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden
    }
    .faq-q{
      width:100%;text-align:left;padding:18px 18px;background:#fff;cursor:pointer;border:0;color:var(--text);
      display:flex;justify-content:space-between;gap:14px;align-items:center;font-size:15px;font-weight:700
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-a p{margin:0 0 18px;color:var(--muted);line-height:1.8;font-size:14px}
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .chev{transform:rotate(180deg)}
    .chev{transition:transform .25s ease}
    .form{
      background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow)
    }
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#213041}
    .field input,.field select,.field textarea{
      width:100%;padding:13px 14px;border:1px solid #e6d8cb;border-radius:14px;background:#fff;color:var(--text);outline:none;
      transition:border-color .2s ease, box-shadow .2s ease
    }
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#ff8a5c;box-shadow:0 0 0 4px rgba(255,90,31,.10)}
    .field textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}
    .footer{
      margin-top:18px;padding:24px 0 34px;border-top:1px solid rgba(238,223,212,.9);background:#fffaf6;color:#263243
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:18px;align-items:start}
    .footer a{color:#0f4c81}
    .footer p,.footer li{color:#516070;line-height:1.8;font-size:14px}
    .footer ul{margin:0;padding-left:18px}
    .footer small{display:block;margin-top:16px;color:#66758a}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--brand),#ff7a18);color:#fff;
      display:grid;place-items:center;box-shadow:var(--shadow-2);border:0;cursor:pointer
    }
    .service-card{
      display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center
    }
    .service-card img{width:140px;border-radius:18px;border:1px solid var(--line);background:#fff}
    .scroll-note{font-size:13px;color:var(--muted);margin-top:10px}
    .mobile-only{display:none}
    @media (max-width: 1100px){
      .hero-wrap,.split,.footer-grid{grid-template-columns:1fr}
      .grid-4,.grid-3,.stats,.flow,.comments,.faq,.articles,.price-list{grid-template-columns:repeat(2,1fr)}
      .image-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .nav-links{display:none}
      .nav-links.open{
        display:flex;position:absolute;left:16px;right:16px;top:68px;flex-direction:column;align-items:flex-start;
        padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
      }
      .menu-btn{display:inline-flex}
      .grid-4,.grid-3,.stats,.flow,.comments,.faq,.articles,.price-list,.grid-2{grid-template-columns:1fr}
      .hero{padding-top:24px}
      .hero-copy{padding:22px;border-radius:24px}
      .mini-grid,.form-grid,.service-card,.image-grid{grid-template-columns:1fr}
      .section-title{flex-direction:column;align-items:flex-start}
      .mobile-only{display:block}
      table{min-width:760px}
    }
    [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease}
    [data-reveal].visible{opacity:1;transform:none}