:root{
      --bg:#fff9ea;
      --panel:#ffffff;
      --panel2:#fff4c8;
      --text:#1f2937;
      --muted:#5b6472;
      --accent:#ffb800;
      --accent2:#ff8f00;
      --line:#eadfb5;
      --shadow:0 16px 40px rgba(102,72,0,.10);
      --radius:22px;
      --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(255,204,0,.18), transparent 32%),
        radial-gradient(circle at top right, rgba(255,182,0,.12), transparent 28%),
        linear-gradient(180deg,#fffdf6 0%, #fff9ea 42%, #fff7e6 100%);
    }
    img{display:block;max-width:100%;height:auto}
    a{color:inherit;text-decoration:none}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(255,250,235,.82);
      border-bottom:1px solid rgba(234,223,181,.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;box-shadow:0 8px 18px rgba(0,0,0,.06)}
    .brand-title{display:flex;flex-direction:column;gap:2px;min-width:0}
    .brand-title strong{font-size:18px;line-height:1.1}
    .brand-title span{font-size:12px;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;padding:10px 12px;border-radius:12px;color:var(--text)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#374151;padding:8px 10px;border-radius:10px}
    .nav-links a:hover{background:#fff3c2}
    .cta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:none;border-radius:14px;padding:12px 18px;font-weight:700;
      transition:.22s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--accent),#ffd95a);color:#2f2200;box-shadow:0 10px 24px rgba(255,184,0,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,184,0,.34)}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:#324050}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#d8c36e}
    .hero{
      padding:52px 0 26px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch
    }
    .hero-card{
      background:linear-gradient(180deg,#fffdf8, #fff6d8);
      border:1px solid rgba(234,223,181,.9);
      border-radius:30px;
      box-shadow:var(--shadow);
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .hero-card::before,.hero-card::after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.55;pointer-events:none
    }
    .hero-card::before{width:180px;height:180px;background:rgba(255,198,0,.22);right:-40px;top:-30px}
    .hero-card::after{width:120px;height:120px;background:rgba(255,166,0,.16);left:-30px;bottom:-20px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:999px;font-size:13px;color:#6b4f00
    }
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,56px);line-height:1.05;letter-spacing:-.03em}
    .hero p{margin:0;color:#4b5563;font-size:16px;line-height:1.8;max-width:54ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
    .pill{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 12px;font-size:13px;color:#44505e}
    .hero-side{
      display:grid;gap:16px
    }
    .glass{
      background:rgba(255,255,255,.82);
      border:1px solid rgba(234,223,181,.9);
      border-radius:24px;
      box-shadow:var(--shadow);
      padding:22px;
    }
    .metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .metric{background:linear-gradient(180deg,#fff,#fff8df);border:1px solid var(--line);border-radius:18px;padding:18px}
    .metric strong{display:block;font-size:28px;line-height:1;margin-bottom:8px}
    .metric span{font-size:13px;color:var(--muted)}
    .section{padding:24px 0}
    .section-header{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-header h2{margin:0;font-size:28px}
    .section-header p{margin:0;color:var(--muted);max-width:68ch;line-height:1.75}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:22px;
      box-shadow:0 10px 26px rgba(90,64,0,.06);
      padding:22px;
      transition:.22s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(90,64,0,.10)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:#56606f;line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#44505e}
    .timeline{display:grid;gap:14px}
    .step{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}
    .step-num{flex:0 0 38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#ffe38a);display:grid;place-items:center;font-weight:800;color:#2e2300}
    .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:0 10px 26px rgba(90,64,0,.06)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 18px;border-bottom:1px solid #f1e8c4;text-align:left;vertical-align:top}
    th{background:#fff8da;font-size:14px}
    td{color:#4e5968}
    .score{font-size:18px;font-weight:800;color:#8a5a00}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"+";float:right;color:#8c6b00}
    details[open] summary::after{content:"−"}
    .review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .meta{display:flex;justify-content:space-between;gap:10px;margin-bottom:10px;color:#6a7280;font-size:13px}
    .stars{color:#f5a400;font-size:15px;letter-spacing:1px}
    .case-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .articles{display:grid;gap:12px}
    .article{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;padding:16px 18px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .article small{display:block;color:var(--muted);margin-top:6px}
    .form-wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:16px}
    form{display:grid;gap:12px}
    .field{display:grid;gap:8px}
    input,select,textarea{
      width:100%;border:1px solid #d9d1ae;border-radius:14px;padding:13px 14px;
      font:inherit;background:#fff;color:var(--text);outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#f0b100;box-shadow:0 0 0 4px rgba(255,184,0,.12)}
    .footer{
      margin-top:18px;
      padding:24px 0 28px;
      border-top:1px solid rgba(234,223,181,.9);
      background:#fffaf0;
      color:#374151;
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .footer a{color:#334155}
    .footer small{color:#5f6877}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;
      display:grid;gap:10px
    }
    .float-btn{
      width:50px;height:50px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;
      box-shadow:0 12px 26px rgba(64,48,0,.14);cursor:pointer
    }
    .float-panel{
      position:fixed;right:18px;bottom:78px;z-index:61;display:none;width:min(320px,calc(100vw - 36px));
      background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:0 18px 40px rgba(64,48,0,.16);overflow:hidden
    }
    .float-panel.show{display:block}
    .float-panel .inner{padding:16px}
    .float-panel h3{margin:0 0 10px}
    .float-panel p{margin:0 0 12px;color:#5b6472;line-height:1.7}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .notice{background:#fff9d9;border:1px solid #efdf9d;border-radius:18px;padding:16px;color:#5e4a00}
    .scroll-top{position:fixed;right:18px;bottom:138px;z-index:60}
    .reveal{opacity:0;transform:translateY(16px);transition:.45s ease}
    .reveal.visible{opacity:1;transform:none}
    .sticky-mobile{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.review-grid,.case-grid,.form-wrap,.footer-grid,.two-col{grid-template-columns:1fr}
      .nav-toggle{display:inline-flex}
      .nav-links,.cta{display:none}
      .nav-links.open{display:flex;flex-direction:column;align-items:flex-start;width:100%;padding:12px 0 0}
      .nav{flex-wrap:wrap}
      .sticky-mobile{display:flex;gap:10px;padding:0 0 12px}
      .section-header{align-items:flex-start;flex-direction:column}
      h1{font-size:clamp(30px,8vw,46px)}
    }