:root{
      --bg:#f7f4ef;
      --bg2:#ffffff;
      --card:#fffaf4;
      --card2:#f8fbff;
      --line:#eadfce;
      --text:#1f2937;
      --muted:#5f6b7a;
      --brand:#ff7a45;
      --brand2:#6f7cff;
      --brand3:#19b7a6;
      --shadow:0 18px 50px rgba(41, 50, 68, .08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 20% 0%, rgba(255,122,69,.10), transparent 30%),
        radial-gradient(circle at 85% 8%, rgba(111,124,255,.10), transparent 28%),
        linear-gradient(180deg, #fffdf9 0%, var(--bg) 32%, #fbfaf7 100%);
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:saturate(140%) blur(14px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(234,223,206,.7);
    }
    .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:42px; height:42px; object-fit:contain; border-radius:12px; background:#fff; box-shadow:0 8px 22px rgba(0,0,0,.06)}
    .brand-text{min-width:0}
    .brand-text strong{display:block; font-size:18px; letter-spacing:.4px}
    .brand-text span{display:block; font-size:12px; color:var(--muted)}
    .nav-links{display:flex; align-items:center; gap:14px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px; color:#334155; padding:8px 10px; border-radius:999px; transition:.22s ease}
    .nav-links a:hover,.nav-links a:focus-visible{background:#fff3ea; color:#b54708}
    .nav-cta{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:1px solid transparent; border-radius:999px; padding:12px 18px;
      font-weight:700; font-size:14px; cursor:pointer; transition:.25s ease;
      box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff9a5f); color:#fff; box-shadow:0 14px 30px rgba(255,122,69,.22)}
    .btn-primary:hover{transform:translateY(-1px); box-shadow:0 18px 34px rgba(255,122,69,.28)}
    .btn-ghost{background:#fff; color:#243247; border-color:var(--line)}
    .btn-ghost:hover{border-color:#f0c8ad; background:#fff7f0}
    .menu-btn{display:none; background:#fff; border:1px solid var(--line); border-radius:14px; width:44px; height:44px}
    .menu-btn span{display:block; width:18px; height:2px; background:#2b3442; margin:4px auto; border-radius:2px}
    .hero{padding:34px 0 18px}
    .hero-grid{
      display:grid; grid-template-columns:1.2fr .8fr; gap:22px; align-items:stretch;
    }
    .hero-main{
      position:relative; overflow:hidden; border:1px solid rgba(234,223,206,.9);
      background:
        linear-gradient(135deg, rgba(255,255,255,.92), rgba(255,250,244,.92)),
        radial-gradient(circle at 12% 18%, rgba(255,122,69,.10), transparent 22%),
        radial-gradient(circle at 86% 10%, rgba(25,183,166,.10), transparent 20%);
      border-radius:28px; box-shadow:var(--shadow); padding:34px;
    }
    .hero-main::after{
      content:""; position:absolute; inset:auto -8% -22% auto; width:280px; height:280px;
      background:radial-gradient(circle, rgba(111,124,255,.18), transparent 64%);
      border-radius:50%; pointer-events:none;
    }
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; font-size:13px; font-weight:700;
      color:#9a4c1b; background:#fff6ef; border:1px solid #f4d7c6; padding:7px 12px; border-radius:999px;
    }
    h1{margin:16px 0 14px; font-size:clamp(30px, 5vw, 52px); line-height:1.1; letter-spacing:-.03em}
    .hero p{margin:0; color:var(--muted); font-size:16px; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .hero-points{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:24px}
    .point{
      background:rgba(255,255,255,.88); border:1px solid rgba(234,223,206,.85);
      border-radius:18px; padding:14px 14px 13px; min-height:92px;
    }
    .point strong{display:block; font-size:15px}
    .point span{display:block; margin-top:6px; color:var(--muted); font-size:13px}
    .hero-side{
      display:grid; gap:16px;
    }
    .side-card{
      background:linear-gradient(180deg,#fff, #fffaf4);
      border:1px solid var(--line); border-radius:24px; box-shadow:var(--shadow); padding:22px;
    }
    .side-card h2{font-size:18px; margin:0 0 10px}
    .stat-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .stat{
      padding:14px; border-radius:18px; background:#fff; border:1px solid #f0e4d6;
    }
    .stat b{display:block; font-size:22px}
    .stat span{display:block; color:var(--muted); font-size:12px; margin-top:5px}
    .section{padding:18px 0}
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:16px}
    .section-head h2{margin:0; font-size:26px}
    .section-head p{margin:0; color:var(--muted); max-width:66ch}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:16px}
    .card{
      background:var(--bg2); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow);
      padding:22px; transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .card:hover{transform:translateY(-3px); box-shadow:0 22px 42px rgba(41,50,68,.10); border-color:#f1c9af}
    .card h3{margin:0 0 10px; font-size:18px}
    .card p{margin:0; color:var(--muted)}
    .pill-row{display:flex; flex-wrap:wrap; gap:10px}
    .pill{display:inline-flex; align-items:center; padding:8px 12px; border-radius:999px; background:#fff7ef; border:1px solid #f3dac5; color:#a84f10; font-size:13px}
    .timeline{display:grid; gap:12px}
    .step{
      display:flex; gap:14px; align-items:flex-start; padding:18px; border:1px solid var(--line); border-radius:20px; background:#fff;
    }
    .step-num{
      flex:0 0 38px; width:38px; height:38px; border-radius:12px; display:grid; place-items:center;
      color:#fff; font-weight:800; background:linear-gradient(135deg,var(--brand2),#8a97ff);
    }
    .step b{display:block; margin-bottom:4px}
    .compare-wrap{overflow:auto; border-radius:22px; border:1px solid var(--line); background:#fff}
    table{width:100%; border-collapse:collapse; min-width:760px}
    th,td{padding:15px 14px; border-bottom:1px solid #f0e7da; text-align:left; vertical-align:top}
    th{background:#fff8f1; font-size:14px}
    td{color:#374151; font-size:14px}
    .highlight{color:#c2410c; font-weight:700}
    .mini-tags{display:flex; flex-wrap:wrap; gap:10px}
    .mini-tags span{padding:7px 10px; border:1px solid #e9ddcf; border-radius:999px; background:#fff; font-size:12px; color:#475569}
    .list{
      margin:0; padding:0; list-style:none; display:grid; gap:10px;
    }
    .list li{
      padding:14px 16px; background:#fff; border:1px solid var(--line); border-radius:16px; color:#334155;
      display:flex; justify-content:space-between; gap:12px;
    }
    .list li span{color:var(--muted)}
    .faq{display:grid; gap:12px}
    details{
      background:#fff; border:1px solid var(--line); border-radius:18px; box-shadow:var(--shadow); overflow:hidden;
    }
    summary{
      cursor:pointer; list-style:none; padding:18px 20px; font-weight:700; position:relative; padding-right:48px;
    }
    summary::-webkit-details-marker{display:none}
    summary::after{
      content:"+"; position:absolute; right:18px; top:50%; transform:translateY(-50%);
      width:28px; height:28px; border-radius:50%; background:#fff4eb; color:#b45309; display:grid; place-items:center; font-size:18px;
    }
    details[open] summary::after{content:"–"}
    details p{padding:0 20px 18px; margin:0; color:var(--muted)}
    .review-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .review{
      background:linear-gradient(180deg,#fff, #fffaf5); border:1px solid var(--line); border-radius:22px; padding:20px;
    }
    .review .meta{display:flex; justify-content:space-between; gap:12px; align-items:center; margin-bottom:10px}
    .review .meta b{font-size:15px}
    .stars{color:#f59e0b; letter-spacing:1px}
    .review p{margin:0; color:#475569}
    .news-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:16px}
    .article-list{display:grid; gap:10px}
    .article-item{
      padding:15px 16px; border-radius:18px; background:#fff; border:1px solid var(--line);
      display:flex; justify-content:space-between; gap:14px; align-items:center;
    }
    .article-item strong{display:block; font-size:14px}
    .article-item span{color:var(--muted); font-size:12px}
    .contact-grid{display:grid; grid-template-columns:1fr .78fr; gap:16px}
    form{display:grid; gap:12px}
    .field{display:grid; gap:7px}
    .field label{font-size:14px; font-weight:700}
    .field input,.field select,.field textarea{
      width:100%; border:1px solid #e5d8c8; background:#fff; border-radius:14px; padding:13px 14px;
      font:inherit; color:var(--text); outline:none; transition:border-color .2s, box-shadow .2s;
    }
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#f0ab6b; box-shadow:0 0 0 4px rgba(255,122,69,.10)}
    textarea{min-height:126px; resize:vertical}
    .submit-row{display:flex; flex-wrap:wrap; gap:12px; align-items:center}
    .footer{
      margin-top:18px; padding:22px 0 28px; border-top:1px solid rgba(234,223,206,.85);
      background:#fffdf9; color:#334155;
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr .9fr; gap:16px}
    .footer h3{margin:0 0 12px; font-size:16px}
    .footer a{color:#334155}
    .footer a:hover{color:#b45309}
    .footer small{color:#64748b}
    .footer-links{display:grid; gap:8px}
    .fixed-tools{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px;
    }
    .tool{
      width:48px; height:48px; border-radius:16px; display:grid; place-items:center;
      background:#fff; border:1px solid var(--line); box-shadow:var(--shadow);
      font-size:18px;
    }
    .kefu-pop{
      position:fixed; left:16px; bottom:16px; z-index:60; width:min(300px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:22px; box-shadow:var(--shadow); overflow:hidden;
    }
    .kefu-head{padding:14px 16px; background:linear-gradient(135deg,#fff5ec,#fff); font-weight:800}
    .kefu-body{padding:14px 16px; display:grid; gap:12px}
    .kefu-body img{width:110px; height:110px; object-fit:cover; border-radius:14px; border:1px solid var(--line)}
    .kefu-body p{margin:0; color:var(--muted); font-size:13px}
    .scroll-reveal{opacity:0; transform:translateY(16px); transition:.55s ease}
    .scroll-reveal.in{opacity:1; transform:none}
    .mobile-only{display:none}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag-cloud a{
      padding:9px 12px; border-radius:999px; border:1px solid #eadfce; background:#fff; color:#445062; font-size:13px;
    }
    @media (max-width: 1024px){
      .hero-grid,.news-grid,.contact-grid,.footer-grid,.grid-3,.review-grid,.grid-2{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-grid; place-items:center}
      .nav.open .nav-links{
        display:flex; position:absolute; left:16px; right:16px; top:74px; background:#fff; border:1px solid var(--line);
        border-radius:18px; padding:14px; box-shadow:var(--shadow); flex-direction:column; align-items:flex-start;
      }
      .nav.open{position:relative}
      .nav-cta .btn-ghost{display:none}
      .mobile-only{display:block}
    }
    @media (max-width: 720px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .hero-main,.side-card,.card{padding:18px}
      .hero{padding-top:20px}
      .section-head{flex-direction:column; align-items:flex-start}
      table{min-width:680px}
      .kefu-pop{display:none}
      .fixed-tools{right:12px; bottom:12px}
    }