:root{
      --bg:#f7f4ef;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#5f6b7a;
      --line:#e6e0d6;
      --primary:#2563eb;
      --primary2:#7c3aed;
      --accent:#f97316;
      --green:#0f9d58;
      --shadow:0 16px 40px rgba(31,41,55,.08);
      --shadow2:0 10px 22px rgba(37,99,235,.12);
      --radius:20px;
      --radius2:28px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(124,58,237,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(37,99,235,.10), transparent 24%),
        linear-gradient(180deg, #fff 0%, var(--bg) 38%, #fdfcf9 100%);
      line-height:1.7;
    }
    a{color:var(--primary);text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100%, var(--max));margin:0 auto;padding:0 18px}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(247,244,239,.88);
      border-bottom:1px solid rgba(230,224,214,.85);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:74px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:40px;height:40px;object-fit:contain;border-radius:10px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:0 8px 18px rgba(0,0,0,.05)}
    .brand h2{font-size:18px;margin:0;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;color:var(--text);border-radius:12px;padding:10px 12px;font-weight:700}
    .nav-links{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{color:var(--text);font-size:14px;padding:8px 10px;border-radius:10px}
    .nav-links a:hover{background:rgba(37,99,235,.08);color:var(--primary)}
    .hero{
      padding:46px 0 24px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch;
    }
    .hero-card,.panel,.section-card,.faq-item,.review-card,.news-card,.price-card,.stat-card,.step-card,.compare-card,.timeline-card,.form-card,.side-card{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(230,224,214,.92);
      border-radius:var(--radius2);
      box-shadow:var(--shadow);
    }
    .hero-card{padding:34px;overflow:hidden;position:relative}
    .hero-card::before,.hero-card::after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.65;pointer-events:none
    }
    .hero-card::before{width:220px;height:220px;background:radial-gradient(circle, rgba(37,99,235,.18), transparent 70%);right:-70px;top:-40px}
    .hero-card::after{width:180px;height:180px;background:radial-gradient(circle, rgba(249,115,22,.16), transparent 70%);right:80px;bottom:-90px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(37,99,235,.08);color:var(--primary);font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,5vw,54px);line-height:1.08;margin:18px 0 14px;letter-spacing:-.02em}
    .lead{font-size:17px;color:var(--muted);max-width:60ch;margin:0 0 22px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:14px;font-weight:700;border:1px solid transparent;
      transition:.22s ease;cursor:pointer;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:var(--shadow2)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 14px 24px rgba(31,41,55,.12)}
    .hero-stats{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px
    }
    .stat-card{padding:18px}
    .stat-card strong{display:block;font-size:28px;line-height:1;color:var(--text)}
    .stat-card span{display:block;margin-top:8px;color:var(--muted);font-size:13px}
    .hero-side{display:grid;gap:16px}
    .side-card{padding:20px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:linear-gradient(180deg,#fff,#f5f8ff);border:1px solid var(--line);font-size:13px;color:#304159}
    .section{padding:18px 0 8px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin:0 0 16px}
    .section-head h2{font-size:28px;margin:0}
    .section-head p{margin:0;color:var(--muted);max-width:60ch}
    .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{padding:22px}
    .card h3{margin:0 0 8px;font-size:18px}
    .card p{margin:0;color:var(--muted)}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(124,58,237,.12));color:var(--primary);font-weight:900;margin-bottom:14px
    }
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step-card{padding:20px;position:relative}
    .step-card .num{font-size:12px;font-weight:800;color:var(--primary);letter-spacing:.12em;text-transform:uppercase}
    .step-card h3{margin:8px 0 8px}
    .compare-wrap{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:760px;background:#fff;border-radius:18px;overflow:hidden}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#23324a;font-size:14px}
    td{color:#304159}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:rgba(15,157,88,.10);color:var(--green);font-size:12px;font-weight:700}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#f59e0b;font-size:18px;letter-spacing:2px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;background:none;border:none;padding:18px 20px;text-align:left;font-size:16px;font-weight:700;color:var(--text);
      display:flex;justify-content:space-between;align-items:center;cursor:pointer
    }
    .faq-a{padding:0 20px 18px;color:var(--muted);display:none}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:.2s ease}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-card{padding:20px}
    .review-card .who{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}
    .review-card strong{display:block}
    .review-card small{color:var(--muted)}
    .news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .news-card{padding:20px}
    .news-card h3{margin:10px 0 8px;font-size:17px}
    .news-card a{font-weight:700}
    .form-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .form-card{padding:24px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(37,99,235,.55);box-shadow:0 0 0 4px rgba(37,99,235,.10)}
    .contact-box{display:grid;gap:16px}
    .qrcode{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
    .qrcode img{width:140px;height:140px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    footer{margin-top:22px;padding:18px 0 28px;border-top:1px solid rgba(230,224,214,.9);background:#faf8f3;color:var(--text)}
    footer a{color:#2346b0}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      width:48px;height:48px;border:none;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--primary2));
      color:#fff;display:grid;place-items:center;box-shadow:0 14px 28px rgba(37,99,235,.24);cursor:pointer;font-weight:900
    }
    .mobile-only{display:none}
    .floating-contact{
      position:fixed;left:16px;bottom:16px;z-index:60;
      background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:12px 14px;max-width:260px
    }
    .floating-contact strong{display:block;margin-bottom:4px}
    .muted{color:var(--muted)}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:16px
    }
    .list{
      margin:0;padding:0;list-style:none;display:grid;gap:10px
    }
    .list li{display:flex;gap:10px;align-items:flex-start;color:var(--text)}
    .list li::before{content:"";width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));margin-top:9px;flex:0 0 auto}
    .images{
      display:grid;grid-template-columns:repeat(3,1fr);gap:16px
    }
    .images img{border-radius:18px;border:1px solid var(--line);background:#fff;min-height:140px;object-fit:cover}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.timeline,.reviews,.news-list,.form-wrap,.split,.images{grid-template-columns:1fr}
      .nav-links{display:none;position:absolute;left:18px;right:18px;top:74px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:12px}
      .nav-links.open{display:flex;flex-direction:column;align-items:stretch}
      .menu-btn{display:inline-flex}
      .hero-card{padding:24px}
      .hero-stats{grid-template-columns:1fr 1fr}
      .section-head{align-items:start;flex-direction:column}
      .mobile-only{display:block}
      .floating-contact{display:none}
    }
    @media (max-width: 640px){
      .hero{padding-top:24px}
      h1{font-size:32px}
      .hero-stats{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .btn{width:100%}
      .hero-actions{display:grid}
      .qrcode{align-items:flex-start}
    }
    [data-reveal]{opacity:0;transform:translateY(18px);transition:.6s ease}
    [data-reveal].is-visible{opacity:1;transform:translateY(0)}