:root{
      --bg:#f6f3ee;
      --surface:#ffffff;
      --surface-2:#fff8f0;
      --line:#e8dfd3;
      --text:#1d2430;
      --muted:#5f6b7b;
      --primary:#ff5b5f;
      --primary-2:#ff8a3d;
      --accent:#1f6feb;
      --shadow:0 16px 40px rgba(36, 41, 54, .08);
      --shadow-2:0 10px 24px rgba(255, 91, 95, .15);
      --radius:18px;
      --radius-lg:28px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,91,95,.10), transparent 24%),
        radial-gradient(circle at top right, rgba(31,111,235,.08), transparent 20%),
        linear-gradient(180deg, #fffdf9 0%, var(--bg) 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(calc(100% - 32px), var(--container)); margin:0 auto}
    .topbar{
      position:sticky; top:0; z-index:60;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(232,223,211,.85);
    }
    .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:10px; background:#fff; box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand-name{display:flex; flex-direction:column; gap:2px}
    .brand-name strong{font-size:18px; letter-spacing:.3px}
    .brand-name span{font-size:12px; color:var(--muted)}
    .nav-links{display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px; color:var(--muted); padding:8px 0; position:relative}
    .nav-links a:hover{color:var(--text)}
    .nav-links a::after{
      content:""; position:absolute; left:0; bottom:2px; width:0; height:2px;
      background:linear-gradient(90deg,var(--primary),var(--primary-2));
      transition:width .22s ease;
    }
    .nav-links a:hover::after{width:100%}
    .nav-actions{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      padding:12px 18px; border-radius:999px; border:1px solid transparent;
      font-weight:700; font-size:14px; transition:.22s ease; cursor:pointer;
      white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2)); color:#fff; box-shadow:var(--shadow-2)}
    .btn-primary:hover{transform:translateY(-2px); filter:saturate(1.05)}
    .btn-ghost{background:#fff; color:var(--text); border-color:var(--line)}
    .btn-ghost:hover{transform:translateY(-2px); box-shadow:var(--shadow)}
    .menu-toggle{display:none; width:44px; height:44px; border-radius:14px; border:1px solid var(--line); background:#fff; align-items:center; justify-content:center}
    .menu-toggle span{width:18px; height:2px; background:var(--text); position:relative; display:block}
    .menu-toggle span::before,.menu-toggle span::after{content:""; position:absolute; left:0; width:18px; height:2px; background:var(--text); transition:.2s ease}
    .menu-toggle span::before{top:-6px}
    .menu-toggle span::after{top:6px}
    header.hero{padding:34px 0 20px}
    .hero-card{
      position:relative; overflow:hidden;
      background:
        linear-gradient(135deg, rgba(255,91,95,.10), rgba(255,138,61,.08) 38%, rgba(31,111,235,.08)),
        #fff;
      border:1px solid rgba(232,223,211,.9);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      padding:28px;
    }
    .hero-grid{display:grid; grid-template-columns:1.18fr .82fr; gap:22px; align-items:stretch}
    .eyebrow{display:inline-flex; align-items:center; gap:8px; font-size:13px; color:#8b3b26; background:#fff2ec; border:1px solid #ffd9cc; padding:8px 12px; border-radius:999px}
    h1{margin:14px 0 14px; font-size:clamp(32px, 5vw, 56px); line-height:1.05; letter-spacing:-.02em}
    .lead{color:var(--muted); font-size:16px; line-height:1.8; margin:0 0 20px}
    .hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:18px}
    .hero-meta{display:flex; flex-wrap:wrap; gap:10px}
    .chip{display:inline-flex; align-items:center; gap:6px; padding:9px 12px; border-radius:999px; background:#fff; border:1px solid var(--line); color:#334155; font-size:13px}
    .hero-panel{
      background:linear-gradient(180deg,#fff, #fff7f0);
      border:1px solid var(--line);
      border-radius:24px;
      padding:20px;
      display:grid;
      gap:14px;
      align-content:start;
    }
    .hero-stats{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .stat{
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
      padding:16px;
      box-shadow:0 10px 20px rgba(22,28,45,.04);
    }
    .stat strong{display:block; font-size:24px; margin-bottom:6px}
    .stat span{font-size:13px; color:var(--muted); line-height:1.5}
    .mini-list{display:grid; gap:10px}
    .mini-row{
      display:flex; justify-content:space-between; align-items:center; gap:12px;
      padding:12px 14px; background:#fff; border:1px dashed #eadfce; border-radius:14px;
      font-size:14px;
    }
    .mini-row b{color:#c0392b}
    main{padding:8px 0 0}
    section{padding:18px 0}
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:14px; margin-bottom:16px}
    .section-head h2{margin:0; font-size:clamp(24px, 3vw, 34px)}
    .section-head p{margin:0; color:var(--muted); max-width:720px; 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(--surface);
      border:1px solid rgba(232,223,211,.92);
      border-radius:var(--radius);
      box-shadow:0 10px 30px rgba(31,41,55,.05);
      padding:18px;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover{transform:translateY(-3px); box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px; font-size:18px}
    .card p,.card li{color:var(--muted); line-height:1.75}
    .card ul{margin:0; padding-left:18px}
    .badge{
      display:inline-flex; align-items:center; gap:6px;
      font-size:12px; font-weight:700; color:#8a3417;
      background:#fff2ea; border:1px solid #ffd5c0; border-radius:999px; padding:7px 10px; margin-bottom:12px;
    }
    .pill-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .pill{padding:10px 12px; background:#fff; border:1px solid var(--line); border-radius:999px; font-size:13px; color:#374151}
    .media-row{display:grid; grid-template-columns:1fr 1fr; gap:16px}
    .media-box{
      background:#fff; border:1px solid var(--line); border-radius:22px; padding:16px;
    }
    .media-box .img-row{display:grid; grid-template-columns:1fr 1fr; gap:12px}
    .media-box .img-row img{border-radius:16px; width:100%; height:auto; object-fit:cover}
    .flow{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; counter-reset:step}
    .flow .step{position:relative}
    .flow .step::before{
      counter-increment:step; content:counter(step);
      width:34px; height:34px; border-radius:50%; display:inline-flex; align-items:center; justify-content:center;
      background:linear-gradient(135deg,var(--primary),var(--primary-2)); color:#fff; font-weight:800; margin-bottom:12px;
      box-shadow:var(--shadow-2)
    }
    .table-wrap{overflow-x:auto; border-radius:18px; border:1px solid var(--line); background:#fff}
    table{width:100%; border-collapse:collapse; min-width:840px}
    th,td{padding:14px 16px; border-bottom:1px solid #f0e8de; text-align:left; vertical-align:top}
    th{background:#fff6ef; color:#2b2f38; font-size:14px}
    td{color:var(--muted); font-size:14px; line-height:1.7}
    tr:hover td{background:#fffbf8}
    .score-card{
      background:linear-gradient(135deg,#fff 0%, #fff5ef 100%);
      border:1px solid #ffd9c9;
      border-radius:24px;
      padding:20px;
    }
    .score-top{display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap}
    .score-number{font-size:42px; font-weight:900; color:#cc3d2d}
    .stars{color:#ff9b2f; font-size:20px; letter-spacing:2px}
    .split{
      display:grid; grid-template-columns:1fr 1fr; gap:16px; align-items:start;
    }
    .faq{display:grid; gap:12px}
    details{
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
      padding:16px 18px;
      box-shadow:0 8px 20px rgba(0,0,0,.03);
    }
    summary{cursor:pointer; list-style:none; font-weight:700}
    summary::-webkit-details-marker{display:none}
    details p{margin:12px 0 0; color:var(--muted); line-height:1.75}
    .review-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .review .meta{display:flex; justify-content:space-between; gap:10px; align-items:center; margin-bottom:10px}
    .review .role{font-size:13px; color:var(--muted)}
    .review .name{font-weight:800}
    .review .quote{color:#374151; line-height:1.8; margin:0}
    .article-list{display:grid; gap:12px}
    .article-item{
      display:flex; justify-content:space-between; gap:16px; align-items:flex-start;
      padding:16px; background:#fff; border:1px solid var(--line); border-radius:18px;
    }
    .article-item strong{display:block; margin-bottom:6px}
    .article-item span{color:var(--muted); font-size:13px; line-height:1.6}
    .form-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:16px}
    form{
      background:#fff; border:1px solid var(--line); border-radius:24px; padding:18px;
    }
    .field-grid{display:grid; grid-template-columns:1fr 1fr; gap:12px}
    label{display:block; font-size:13px; font-weight:700; margin:2px 0 8px}
    input,select,textarea{
      width:100%; border:1px solid #d9d0c4; border-radius:14px; padding:12px 14px;
      font:inherit; color:var(--text); background:#fff; outline:none;
    }
    input:focus,select:focus,textarea:focus{border-color:#ff9f77; box-shadow:0 0 0 4px rgba(255,91,95,.08)}
    textarea{min-height:120px; resize:vertical}
    .aside-box{
      background:linear-gradient(180deg,#fff, #fff8f4);
      border:1px solid var(--line);
      border-radius:24px;
      padding:18px;
      display:grid;
      gap:14px;
      align-content:start;
    }
    .contact-line{display:flex; justify-content:space-between; gap:12px; align-items:center; padding:12px 14px; border-radius:14px; background:#fff; border:1px solid var(--line)}
    .footer{
      margin-top:18px;
      background:#111827;
      color:#e5e7eb;
      padding:26px 0 22px;
    }
    .footer a{color:#fff}
    .footer .muted{color:#cbd5e1}
    .footer-grid{display:grid; grid-template-columns:1.2fr .9fr .9fr; gap:18px}
    .footer .chip{background:rgba(255,255,255,.08); color:#eef2ff; border-color:rgba(255,255,255,.12)}
    .floating{
      position:fixed; right:16px; bottom:18px; z-index:70; display:grid; gap:10px;
    }
    .float-btn{
      width:52px; height:52px; border-radius:18px; display:flex; align-items:center; justify-content:center;
      background:linear-gradient(135deg,var(--primary),var(--primary-2)); color:#fff; box-shadow:0 18px 30px rgba(255,91,95,.26);
      border:none; cursor:pointer;
    }
    .客服{
      position:fixed; left:16px; bottom:18px; z-index:70;
      background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow);
      padding:10px; width:168px;
    }
    .客服 strong{display:block; font-size:14px; margin-bottom:8px}
    .客服 img{border-radius:14px}
    .scroll-reveal{opacity:0; transform:translateY(18px); transition:.6s ease}
    .scroll-reveal.show{opacity:1; transform:translateY(0)}
    .tagline{display:flex; flex-wrap:wrap; gap:10px}
    .timeline{display:grid; gap:12px}
    .timeline-item{display:grid; grid-template-columns:110px 1fr; gap:14px; align-items:start; padding:14px 16px; background:#fff; border:1px solid var(--line); border-radius:18px}
    .timeline-item b{color:#7c2d12}
    .article-banner{
      display:grid; grid-template-columns:repeat(4,1fr); gap:12px;
    }
    .article-banner img{border-radius:18px; aspect-ratio:1/1; object-fit:cover; width:100%}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.flow,.split,.review-grid,.form-grid,.footer-grid,.media-row,.timeline-item,.article-banner{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .nav-actions .btn-ghost{display:none}
      .mobile-only{display:inline-flex}
      .nav.open .nav-links{
        display:flex; position:absolute; left:0; right:0; top:100%; background:rgba(255,255,255,.98);
        flex-direction:column; align-items:flex-start; gap:4px; padding:14px 18px 18px; border-bottom:1px solid var(--line);
        box-shadow:0 14px 24px rgba(0,0,0,.06);
      }
      .nav{position:relative}
      .nav.open .nav-links a{width:100%; padding:12px 0; border-bottom:1px solid #f1e9df}
      .field-grid{grid-template-columns:1fr}
      .hero-card{padding:18px}
      .hero-stats{grid-template-columns:1fr 1fr}
      .客服{display:none}
    }