:root{
      --bg:#fff7ef;
      --bg2:#fffdf9;
      --card:#ffffff;
      --card2:#fff4e6;
      --line:#f0dfcf;
      --text:#203040;
      --muted:#667485;
      --brand:#ff7a59;
      --brand2:#ffb347;
      --brand3:#7c7cff;
      --shadow:0 12px 30px rgba(65, 43, 25, .08);
      --shadow2:0 10px 24px rgba(255, 122, 89, .12);
      --radius:22px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,179,71,.16), transparent 28%),
        radial-gradient(circle at top right, rgba(124,124,255,.12), transparent 24%),
        linear-gradient(180deg, #fffaf4 0%, #fff7ef 42%, #fffdf9 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--max));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:60;
      backdrop-filter: blur(14px);
      background:rgba(255,248,240,.88);
      border-bottom:1px solid rgba(240,223,207,.9);
    }
    .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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:var(--shadow)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .menu{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:14px;color:#395063;padding:8px 0;position:relative}
    .menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:.25s}
    .menu a:hover::after{width:100%}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn,.btn2,.btn-ghost{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:999px;font-weight:700;border:1px solid transparent;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
      cursor:pointer;
    }
    .btn{background:linear-gradient(135deg,var(--brand),#ff906b);color:#fff;box-shadow:var(--shadow2)}
    .btn2{background:linear-gradient(135deg,var(--brand2),#ffd36d);color:#4a3200}
    .btn-ghost{background:#fff;border-color:var(--line);color:#294255}
    .btn:hover,.btn2:hover,.btn-ghost:hover{transform:translateY(-2px)}
    .burger{display:none;background:#fff;border:1px solid var(--line);width:44px;height:44px;border-radius:14px}
    .hero{
      padding:42px 0 18px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.article,.form-wrap,.timeline li,.compare-box,.service-pill,.metric,.price-box{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(240,223,207,.95);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-main{
      padding:34px;
      overflow:hidden;
      position:relative;
      min-height:420px;
      background:
        radial-gradient(circle at 18% 12%, rgba(255,179,71,.22), transparent 20%),
        radial-gradient(circle at 84% 20%, rgba(124,124,255,.14), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,247,239,.92));
    }
    .hero-main::before{
      content:"";position:absolute;inset:auto -40px -80px auto;width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle, rgba(255,122,89,.22), rgba(255,122,89,0) 70%);
      filter:blur(6px);
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
      color:#7a4d00;background:#fff3d7;border:1px solid #ffe0a8;padding:8px 12px;border-radius:999px;
    }
    h1{font-size:clamp(34px,5vw,54px);line-height:1.05;margin:18px 0 14px;letter-spacing:-.03em}
    .hero p{font-size:16px;line-height:1.85;color:var(--muted);margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .point{
      padding:14px 15px;border-radius:18px;background:#fff; border:1px solid var(--line);
    }
    .point b{display:block;font-size:18px;margin-bottom:6px}
    .point span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-side{padding:18px;display:flex;flex-direction:column;gap:14px}
    .quick{
      padding:18px;border-radius:20px;background:linear-gradient(135deg,#fff7f1,#fff);
      border:1px solid var(--line);
    }
    .quick h3,.section-title h2{margin:0 0 10px;font-size:24px}
    .quick p{margin:0;color:var(--muted);line-height:1.8}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .metric{padding:16px;background:linear-gradient(180deg,#fff,#fffaf4)}
    .metric strong{display:block;font-size:24px}
    .metric span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}
    section{padding:18px 0}
    .section-title{display:flex;justify-content:space-between;gap:14px;align-items:flex-end;margin-bottom:16px}
    .section-title p{margin:0;color:var(--muted);max-width:760px;line-height:1.8}
    .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:20px}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.8}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span,.badge{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#395063
    }
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start;
    }
    .panel{padding:22px}
    .panel ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.9}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{
      padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#fff7ef);
      border:1px solid var(--line);position:relative;
    }
    .step .n{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,var(--brand),#ffa86f);color:#fff;font-weight:800;margin-bottom:14px}
    table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    th,td{padding:14px 14px;border-bottom:1px solid #f3e4d7;text-align:left;vertical-align:top;font-size:14px}
    th{background:#fff7ef;color:#31475b}
    tr:last-child td{border-bottom:none}
    .compare-score{font-size:30px;font-weight:800;color:var(--brand)}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;
      padding:18px 20px;background:transparent;border:none;color:var(--text);font-size:16px;font-weight:700;text-align:left;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;padding:0 20px}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:18px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.8}
    .reviews,.articles,.services{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review cite{display:block;margin-top:12px;font-style:normal;color:#42586d;font-weight:700}
    .review small{display:block;color:var(--muted);margin-top:4px}
    .article .meta{color:#9a6b28;font-size:13px;font-weight:700}
    .article h3{margin:10px 0 8px}
    .article p{margin:0;color:var(--muted);line-height:1.8}
    .form-wrap{padding:22px}
    form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:8px;color:#415365}
    input,select,textarea{
      width:100%;border:1px solid #e8d7c7;border-radius:16px;background:#fff;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:border-color .2s, box-shadow .2s;
    }
    textarea{min-height:120px;resize:vertical;grid-column:1/-1}
    input:focus,select:focus,textarea:focus{border-color:#ffad82;box-shadow:0 0 0 4px rgba(255,122,89,.12)}
    .form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .footer{
      margin-top:18px;padding:24px 0 28px;border-top:1px solid var(--line);
      background:linear-gradient(180deg,rgba(255,250,244,.92),rgba(255,247,239,.98));
      color:#33495c;
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px}
    .footer a{color:#2b5d8a}
    .copyright{margin-top:16px;padding-top:16px;border-top:1px solid #ead9ca;color:#718194;font-size:13px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:70;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:54px;height:54px;border-radius:18px;border:none;box-shadow:var(--shadow2);
      background:linear-gradient(135deg,var(--brand),#ffa066);color:#fff;display:grid;place-items:center;cursor:pointer
    }
    .float-card{
      width:min(300px, calc(100vw - 32px));
      position:fixed;right:16px;bottom:80px;z-index:69;
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:16px;display:none;
    }
    .float-card.open{display:block}
    .float-card img{border-radius:16px;border:1px solid var(--line);margin:10px 0}
    .mobile-only{display:none}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:16px 18px}
    .timeline b{display:block;margin-bottom:6px}
    .timeline span{color:var(--muted);line-height:1.8}
    .service-pill{padding:16px}
    .service-pill h3{margin:0 0 8px}
    .service-pill p{margin:0;color:var(--muted);line-height:1.75}
    .note{
      padding:14px 16px;border-radius:18px;background:#fff8e8;border:1px solid #ffe3a8;color:#7a5200;line-height:1.75
    }
    @media (max-width: 980px){
      .hero-grid,.split,.reviews,.articles,.services,.grid-4,.grid-3,.steps,.footer-grid{grid-template-columns:1fr 1fr}
      .hero-main{min-height:auto}
      .hero-points{grid-template-columns:1fr}
      .menu{display:none}
      .burger{display:inline-grid;place-items:center}
      .mobile-only{display:block}
    }
    @media (max-width: 720px){
      .hero-grid,.split,.reviews,.articles,.services,.grid-4,.grid-3,.steps,.footer-grid,form{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero{padding-top:24px}
      .nav{min-height:66px}
      .brand strong{font-size:16px}
      h1{font-size:32px}
      .section-title{flex-direction:column;align-items:flex-start}
      .nav-actions .btn-ghost,.nav-actions .btn2{display:none}
      .form-actions .btn,.form-actions .btn-ghost{width:100%}
      .floating{right:12px;bottom:12px}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
    .reveal.show{opacity:1;transform:none}