:root{
      --bg:#fff7f4;
      --bg2:#fff;
      --card:#ffffff;
      --text:#222;
      --muted:#5f5a59;
      --line:#ead8d1;
      --brand:#d91f2d;
      --brand2:#ff6a4d;
      --accent:#ffe2da;
      --shadow:0 16px 40px rgba(153, 34, 34, .12);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#fff8f5 0%,#fff 28%,#fff6f2 100%);color:var(--text)}
    a{text-decoration:none;color:inherit}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:30;background:rgba(255,248,245,.9);backdrop-filter:blur(14px);border-bottom:1px solid rgba(234,216,209,.8)}
    .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;padding:4px;box-shadow:0 8px 18px rgba(217,31,45,.12)}
    .brand strong{font-size:18px;letter-spacing:.5px}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .navlinks{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .navlinks a{font-size:14px;color:#3a3331;padding:8px 10px;border-radius:999px}
    .navlinks a:hover{background:#fff;color:var(--brand)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;align-items:stretch}
    .hero-main{position:relative;overflow:hidden;background:linear-gradient(135deg,#fff 0%,#fff4ef 48%,#ffe3db 100%);border:1px solid #f0d8d1;border-radius:28px;box-shadow:var(--shadow);padding:34px}
    .hero-main::before,.hero-main::after{content:"";position:absolute;border-radius:999px;background:rgba(217,31,45,.08);filter:blur(2px);animation:float 8s ease-in-out infinite}
    .hero-main::before{width:160px;height:160px;right:-35px;top:-30px}
    .hero-main::after{width:96px;height:96px;right:110px;bottom:32px;animation-delay:1.2s}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.06;margin:14px 0 14px;letter-spacing:-.02em}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff;color:var(--brand);border:1px solid #f2c8c0;font-size:13px;font-weight:700}
    .hero p{font-size:16px;line-height:1.8;color:var(--muted);max-width:62ch;margin:0}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:14px;font-weight:700;border:1px solid transparent;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand) 0%,var(--brand2) 100%);color:#fff;box-shadow:0 14px 26px rgba(217,31,45,.22)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-ghost{background:#fff;border-color:#f0d0c8;color:#2e2523}
    .btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
    .hero-side{display:grid;gap:16px}
    .stat-card,.intro-card,.panel{background:var(--card);border:1px solid #f0ddd7;border-radius:22px;box-shadow:0 10px 22px rgba(128,45,27,.08);padding:20px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff 0%,#fff8f6 100%);border:1px solid #f5e2dd}
    .stat b{display:block;font-size:24px;color:var(--brand);margin-bottom:6px}
    .stat span{font-size:13px;color:var(--muted);line-height:1.5}
    section{padding:18px 0}
    .section-head{display:flex;align-items:flex-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:60ch;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:#fff;border:1px solid #f1ddd7;border-radius:22px;box-shadow:0 8px 22px rgba(120,53,42,.07);padding:18px;transition:transform .2s ease, box-shadow .2s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 16px 28px rgba(120,53,42,.12)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,li{color:var(--muted);line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff5f2;border:1px solid #f0d4cd;font-size:13px;color:#4a3b38}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative;padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff 0%,#fff6f3 100%);border:1px solid #f0ddd7}
    .step b{display:inline-flex;width:32px;height:32px;border-radius:10px;align-items:center;justify-content:center;background:var(--brand);color:#fff;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid #f1ddd7;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #f4e4df;text-align:left;vertical-align:top}
    th{background:#fff4ef;color:#302724}
    .ok{color:#12805b;font-weight:700}
    .no{color:#af3e2d}
    details{background:#fff;border:1px solid #f0ddd7;border-radius:18px;padding:16px 18px}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700;color:#2a2220}
    summary::-webkit-details-marker{display:none}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
    .stars{color:#f39c12;letter-spacing:2px}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article a{color:var(--brand);font-weight:700}
    .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:#3d3330}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid #e7d2cc;border-radius:14px;background:#fff;color:#1f1918;font:inherit;outline:none}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(217,31,45,.08)}
    .full{grid-column:1/-1}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    footer{padding:26px 0 30px;background:#fff5f2;border-top:1px solid #f0ddd7;color:#332927}
    footer a{color:#7f201c}
    .float-box{position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px}
    .float-btn{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 26px rgba(217,31,45,.24)}
    .kefu{position:fixed;left:16px;bottom:16px;z-index:35;background:#fff;border:1px solid #f0ddd7;border-radius:20px;box-shadow:var(--shadow);padding:12px;max-width:160px}
    .kefu img{border-radius:14px;margin-top:8px}
    .muted{color:var(--muted)}
    .mini-list{padding-left:18px;margin:0}
    .center{text-align:center}
    .scrollbar-hide::-webkit-scrollbar{height:8px}
    .scrollbar-hide::-webkit-scrollbar-thumb{background:#efc9c0;border-radius:999px}
    @keyframes float{50%{transform:translateY(-8px)}}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.steps,.reviews,.articles{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
    }
    @media (max-width: 720px){
      .navlinks{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid #f0ddd7;border-radius:18px;box-shadow:var(--shadow);padding:12px;flex-direction:column;align-items:flex-start}
      .navlinks.show{display:flex}
      .menu-btn{display:inline-flex}
      .hero-grid,.grid-3,.grid-4,.steps,.reviews,.articles,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      h1{font-size:32px}
      .kefu{max-width:132px}
    }