:root{
      --bg:#fffef8;
      --bg2:#fff8d9;
      --card:#ffffff;
      --line:#eadf9f;
      --text:#1f2937;
      --muted:#5b6472;
      --brand:#ffcc00;
      --brand2:#ffdf55;
      --accent:#1f6feb;
      --shadow:0 14px 40px rgba(70, 56, 0, .10);
      --shadow2:0 8px 24px rgba(70, 56, 0, .08);
      --radius:20px;
      --radius2:14px;
      --max: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 20% 10%, rgba(255,204,0,.18), transparent 22%),
        radial-gradient(circle at 85% 0%, rgba(255,223,85,.20), transparent 20%),
        linear-gradient(180deg, #fffef8 0%, #fffaf0 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky; top:0; z-index:50;
      background:rgba(255,254,248,.84);
      backdrop-filter:saturate(1.1) blur(14px);
      border-bottom:1px solid rgba(234,223,159,.75);
    }
    .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;border:1px solid var(--line);padding:4px;box-shadow:var(--shadow2)}
    .brand-txt{min-width:0}
    .brand-txt strong{display:block;font-size:18px;line-height:1.1}
    .brand-txt span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-links{display:flex; align-items:center; gap:16px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px;color:#2f3744;padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover{background:rgba(255,204,0,.18);transform:translateY(-1px)}
    .nav-cta{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; transition:.25s; cursor:pointer; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ffe66d); color:#2b2400; box-shadow:0 10px 22px rgba(255, 204, 0, .30)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 14px 26px rgba(255, 204, 0, .38)}
    .btn-ghost{background:#fff;border-color:var(--line);color:#374151}
    .btn-ghost:hover{border-color:#d5c15b;transform:translateY(-2px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:30px 0 18px}
    .hero-grid{
      display:grid; grid-template-columns:1.15fr .85fr; gap:22px; align-items:stretch;
    }
    .hero-main, .panel, .section-card, .price-card, .review-card, .faq-item, .form-card{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(234,223,159,.8);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{padding:32px; position:relative; overflow:hidden}
    .hero-main:before, .hero-main:after{
      content:""; position:absolute; border-radius:999px; pointer-events:none; opacity:.85
    }
    .hero-main:before{width:220px;height:220px;right:-80px;top:-90px;background:radial-gradient(circle, rgba(255,204,0,.32), transparent 64%)}
    .hero-main:after{width:180px;height:180px;right:70px;bottom:-70px;background:radial-gradient(circle, rgba(31,111,235,.14), transparent 68%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,204,0,.18);border:1px solid rgba(255,204,0,.35);color:#7a5d00;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{font-size:clamp(32px, 5vw, 54px); line-height:1.08; margin:18px 0 14px; letter-spacing:-.03em}
    .lead{font-size:16px; line-height:1.8; color:var(--muted); max-width:58ch}
    .hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:22px}
    .hero-stats{display:grid; grid-template-columns:repeat(4, minmax(0,1fr)); gap:12px; margin-top:26px}
    .stat{padding:14px 12px;border-radius:16px;background:linear-gradient(180deg,#fffdf2,#fff);border:1px solid #efe1a4}
    .stat strong{display:block;font-size:22px;line-height:1.1;color:#2a2607}
    .stat span{display:block;font-size:12px;color:var(--muted);margin-top:6px;line-height:1.5}
    .hero-side{display:grid;gap:14px}
    .panel{padding:18px}
    .panel h3{margin:0 0 10px;font-size:18px}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff8cc;border:1px solid #eedf86;color:#5f4d00;font-size:13px}
    .mini-list{display:grid; gap:10px; margin:0; padding:0; list-style:none}
    .mini-list li{display:flex; gap:10px; align-items:flex-start; color:var(--muted); font-size:14px; line-height:1.7}
    .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);margin-top:8px;flex:0 0 auto}
    main section{padding:18px 0}
    .section-title{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:14px}
    .section-title h2{margin:0;font-size:clamp(24px, 3vw, 34px)}
    .section-title p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .section-card{padding:22px}
    .grid-3{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:14px}
    .grid-2{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:14px}
    .feature, .case, .review-card, .info-card, .price-card{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff, #fffdf3);border:1px solid #efe1a4;box-shadow:var(--shadow2);transition:.24s}
    .feature:hover, .case:hover, .review-card:hover, .info-card:hover, .price-card:hover{transform:translateY(-3px); box-shadow:0 16px 30px rgba(70,56,0,.12)}
    .feature h3, .case h3, .info-card h3{margin:0 0 10px;font-size:18px}
    .feature p, .case p, .info-card p, .review-card p, .muted{color:var(--muted);line-height:1.75;margin:0}
    .metric-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
    .metric{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff8c8,#fff);border:1px solid #eedc7d}
    .metric strong{display:block;font-size:26px;color:#403300}
    .metric span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:18px;border-radius:18px;background:#fff;border:1px solid #efe1a4;position:relative}
    .step-num{display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;background:rgba(255,204,0,.18);color:#6b5200;font-weight:800;margin-bottom:12px}
    table{width:100%; border-collapse:separate; border-spacing:0; overflow:hidden}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid #efe1a4;box-shadow:var(--shadow2)}
    th, td{padding:14px 12px; text-align:left; vertical-align:top; border-bottom:1px solid #f2eabf; font-size:14px; line-height:1.65; background:#fff}
    th{background:#fff9dd;color:#332b00;font-size:13px;white-space:nowrap}
    tr:last-child td{border-bottom:none}
    .pill{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#fff2b3;border:1px solid #edd95d;font-size:12px;color:#5b4700;font-weight:700}
    .rating{display:flex; align-items:center; gap:10px; flex-wrap:wrap}
    .stars{color:#f0b400; letter-spacing:2px; font-size:18px}
    .accordion{display:grid; gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%; border:none; background:transparent; color:var(--text); padding:18px 18px;
      display:flex; justify-content:space-between; align-items:center; gap:12px; font-size:16px; font-weight:700; cursor:pointer; text-align:left
    }
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease; border-top:1px solid transparent}
    .faq-a p{padding:0 18px 18px; margin:0; color:var(--muted); line-height:1.8}
    .faq-item.open .faq-a{max-height:180px}
    .faq-item.open .faq-q{border-bottom:1px solid #f1e7ad}
    .faq-icon{width:30px;height:30px;border-radius:10px;background:#fff4be;display:grid;place-items:center;flex:0 0 auto}
    .testimonials, .articles, .links-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .review-card .meta{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-bottom:10px}
    .avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#ffe56f,#ffcc00);color:#4b3a00;font-weight:800}
    .review-card h3{margin:0;font-size:16px}
    .small{font-size:13px;color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    label{display:block;font-size:13px;font-weight:700;color:#34311f;margin-bottom:8px}
    input, select, textarea{
      width:100%; border:1px solid #e6d990; background:#fff; color:var(--text); border-radius:14px;
      padding:13px 14px; font:inherit; outline:none; transition:.2s;
    }
    textarea{min-height:120px; resize:vertical}
    input:focus, select:focus, textarea:focus{border-color:#d6b900; box-shadow:0 0 0 4px rgba(255,204,0,.16)}
    .full{grid-column:1 / -1}
    .footer{
      margin-top:18px; padding:24px 0 28px; border-top:1px solid rgba(234,223,159,.75);
      background:linear-gradient(180deg, rgba(255,251,228,.92), rgba(255,248,215,.92));
      color:#3a3111;
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px;align-items:start}
    .footer a{color:#2752b8}
    .footer a:hover{text-decoration:underline}
    .contact-card{padding:18px;border-radius:18px;background:#fff;border:1px solid #efe1a4;box-shadow:var(--shadow2)}
    .contact-row{display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center}
    .qr{width:140px;aspect-ratio:1/1;object-fit:cover;border-radius:16px;border:1px solid #eadf9f;background:#fff}
    .float-tools{
      position:fixed; right:16px; bottom:16px; display:grid; gap:10px; z-index:60;
    }
    .float-tools a, .float-tools button{
      width:48px;height:48px;border-radius:16px;border:1px solid #eadf9f;background:#fff;box-shadow:var(--shadow2);
      display:grid;place-items:center;color:#2e2a14;cursor:pointer
    }
    .float-tools a:hover, .float-tools button:hover{transform:translateY(-2px)}
    .mobile-toggle{display:none}
    .section-anchor{scroll-margin-top:92px}
    .soft-band{
      background:linear-gradient(135deg, rgba(255,204,0,.11), rgba(255,255,255,.9));
      border:1px solid rgba(234,223,159,.8);
      border-radius:24px;
      padding:20px;
    }
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .timeline .step{min-height:160px}
    .list-bullets{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .list-bullets li{display:flex;gap:10px;align-items:flex-start}
    .list-bullets b{color:#3b3200}
    .img-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .img-row img{border-radius:18px;border:1px solid #efe1a4;box-shadow:var(--shadow2);object-fit:cover;width:100%}
    @media (max-width: 1024px){
      .hero-grid,.grid-3,.grid-2,.metric-row,.workflow,.testimonials,.articles,.links-grid,.timeline,.footer-grid,.grid-3,.form-grid,.contact-row{grid-template-columns:1fr 1fr}
      .hero-grid{grid-template-columns:1fr}
      .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 760px){
      .container{width:min(var(--max), calc(100% - 20px))}
      .nav{gap:10px}
      .menu-btn{display:inline-flex}
      .nav-links{display:none; position:absolute; left:16px; right:16px; top:68px; padding:12px; background:#fffef8; border:1px solid #eadf9f; border-radius:18px; box-shadow:var(--shadow); flex-direction:column; align-items:stretch}
      header.open .nav-links{display:flex}
      .nav-links a{padding:10px 12px}
      .nav-cta{display:none}
      .mobile-toggle{display:inline-flex}
      .hero{padding-top:18px}
      .hero-main{padding:22px}
      .hero-stats{grid-template-columns:1fr 1fr}
      .grid-3,.grid-2,.metric-row,.workflow,.testimonials,.articles,.links-grid,.timeline,.footer-grid,.form-grid,.contact-row,.img-row{grid-template-columns:1fr}
      .section-title{align-items:flex-start; flex-direction:column}
      .contact-row{gap:12px}
      .qr{width:120px}
      .float-tools{right:12px; bottom:12px}
      .float-tools a,.float-tools button{width:44px;height:44px;border-radius:14px}
    }