:root{
      --bg:#fffaf4;
      --surface:#ffffff;
      --surface-2:#fff3e6;
      --line:#f1dfcf;
      --text:#24303f;
      --muted:#5f6b78;
      --primary:#ff7a59;
      --primary-2:#ffb03a;
      --accent:#6c7bff;
      --success:#19a974;
      --shadow:0 18px 50px rgba(68, 51, 35, .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;background:
      radial-gradient(circle at top left, rgba(255,176,58,.18), transparent 28%),
      radial-gradient(circle at top right, rgba(108,123,255,.14), transparent 24%),
      linear-gradient(180deg, #fffaf4 0%, #fffdfb 100%);color:var(--text)}
    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;background:rgba(255,250,244,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(241,223,207,.8)}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .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:0 8px 24px rgba(0,0,0,.08)}
    .brand-text strong{display:block;font-size:18px;line-height:1.1}
    .brand-text span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .nav-toggle{display:none;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:10px 12px;color:var(--text)}
    .nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav a:hover{background:var(--surface-2);color:var(--text)}
    .nav .home-link{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 10px 24px rgba(255,122,89,.24)}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:22px;align-items:stretch}
    .hero-panel,.card,.section-panel,.review-card,.faq-item,.article-item,.price-box,.timeline-item,.compare-box,.contact-box,.floating-card{background:var(--surface);border:1px solid rgba(241,223,207,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-panel{padding:34px;position:relative;overflow:hidden}
    .hero-panel:before,.hero-panel:after{content:"";position:absolute;border-radius:999px;filter:blur(2px)}
    .hero-panel:before{width:220px;height:220px;right:-60px;top:-70px;background:radial-gradient(circle, rgba(255,176,58,.28), transparent 70%)}
    .hero-panel:after{width:180px;height:180px;right:80px;bottom:-90px;background:radial-gradient(circle, rgba(108,123,255,.20), transparent 70%)}
    .kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,122,89,.10);color:#b24328;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.06;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:13px 18px;border:1px solid transparent;font-weight:700;transition:.2s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),#ff9264);color:#fff;box-shadow:0 14px 30px rgba(255,122,89,.25)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px}
    .metric{background:rgba(255,255,255,.72);border:1px solid rgba(241,223,207,.9);border-radius:18px;padding:16px}
    .metric strong{display:block;font-size:26px;margin-bottom:6px}
    .metric span{color:var(--muted);font-size:13px;line-height:1.6}
    .hero-side{display:grid;gap:14px}
    .side-card{padding:22px}
    .side-card h2{margin:0 0 10px;font-size:20px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:var(--surface-2);border:1px solid rgba(241,223,207,.95);font-size:13px;color:#5d4330}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:68ch;line-height:1.7}
    .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,.section-panel,.review-card,.compare-box,.contact-box,.price-box,.timeline-item,.faq-item,.article-item{padding:20px}
    .card h3,.section-panel h3,.compare-box h3,.contact-box h3{margin:0 0 10px;font-size:18px}
    .card p,.section-panel p,.review-card p,.article-item p,.price-box p,.timeline-item p{margin:0;color:var(--muted);line-height:1.75}
    .icon-badge{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(255,122,89,.14),rgba(108,123,255,.14));margin-bottom:14px;color:#b4432d;font-weight:900}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:80px 1fr;gap:16px;align-items:start}
    .timeline-item b{display:inline-flex;align-items:center;justify-content:center;padding:10px 12px;border-radius:12px;background:var(--surface-2);font-size:13px}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid rgba(241,223,207,.9);background:var(--surface)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #f3e6da;vertical-align:top}
    th{background:#fff7ef;color:#2f3c4c;font-size:14px}
    td{color:var(--muted);font-size:14px;line-height:1.7}
    .highlight{color:#b24328;font-weight:700}
    .faq{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;font-weight:700;color:var(--text)}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item .answer{color:var(--muted);line-height:1.8;margin-top:12px}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
    .stars{color:#ffae2b;letter-spacing:2px}
    .article-list{display:grid;gap:12px}
    .article-item{display:flex;justify-content:space-between;gap:16px;align-items:center}
    .article-item strong{display:block;margin-bottom:5px}
    .contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    form{display:grid;gap:12px}
    .field-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    input,select,textarea{width:100%;border:1px solid #ead8c8;background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#ffb03a;box-shadow:0 0 0 4px rgba(255,176,58,.12)}
    .form-note{font-size:13px;color:var(--muted);line-height:1.7}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{border:none;border-radius:999px;padding:12px 14px;background:linear-gradient(135deg,var(--primary),#ff9868);color:#fff;box-shadow:0 14px 28px rgba(255,122,89,.26);font-weight:700;cursor:pointer}
    .floating button{background:#fff;color:var(--text);border:1px solid var(--line)}
    footer{margin-top:18px;padding:22px 0 28px;border-top:1px solid rgba(241,223,207,.9);background:#fff7ef;color:#425162}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr 1fr;gap:16px}
    .footer-grid a{color:#364253}
    .footer-grid h3{margin:0 0 12px;font-size:16px}
    .footer-grid p,.footer-grid li{color:#586679;line-height:1.8}
    .list{margin:0;padding-left:18px}
    .mini-links{display:flex;flex-wrap:wrap;gap:10px}
    .mini-links a{padding:8px 10px;border-radius:999px;background:#fff;border:1px solid #eedccd}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .scroll-reveal.in{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.reviews,.contact-grid,.footer-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .nav-toggle{display:inline-flex}
      .nav{display:none;position:absolute;left:16px;right:16px;top:66px;background:var(--surface);padding:14px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
      .nav.open{display:flex;flex-direction:column;align-items:flex-start}
      .field-row{grid-template-columns:1fr}
      .hero-panel{padding:24px}
      .hero-metrics{grid-template-columns:1fr}
      .article-item{flex-direction:column;align-items:flex-start}
    }