:root{
      --bg:#f7f4ee;
      --bg2:#fffdf8;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#667085;
      --line:#eadfcd;
      --brand:#2563eb;
      --brand2:#7c3aed;
      --accent:#f97316;
      --accent2:#14b8a6;
      --shadow:0 18px 50px rgba(31,41,55,.08);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top left,rgba(124,58,237,.08),transparent 24%),radial-gradient(circle at top right,rgba(37,99,235,.08),transparent 22%),linear-gradient(180deg,#fffdf8 0%,#f7f4ee 52%,#f8f6f1 100%);color:var(--text);line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    header{position:sticky;top:0;z-index:50;background:rgba(255,253,248,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(234,223,205,.75)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:76px}
    .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;border:1px solid var(--line);padding:4px;box-shadow:0 10px 24px rgba(0,0,0,.05)}
    .brand strong{display:block;font-size:16px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#334155;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover{background:#eef2ff;color:#1d4ed8}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.22s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 30px rgba(37,99,235,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(37,99,235,.28)}
    .btn-ghost{background:#fff;color:#1f2937;border:1px solid var(--line)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:44px;height:44px;align-items:center;justify-content:center}
    .menu-toggle span{display:block;width:18px;height:2px;background:#334155;position:relative}
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#334155}
    .menu-toggle span::before{top:-6px}.menu-toggle span::after{top:6px}
    main{overflow:hidden}
    .hero{padding:46px 0 26px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.panel,.faq-item,.review,.article,.timeline li,.service-card,.case-card,.price-box,.quote-box,.form-box{background:rgba(255,255,255,.84);border:1px solid rgba(234,223,205,.95);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(124,58,237,.12));color:#1d4ed8;font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(34px,5vw,58px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:18px;color:#334155;max-width:42rem}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#fbfaf6);border:1px solid var(--line)}
    .stat b{display:block;font-size:22px;color:#111827}
    .stat span{font-size:13px;color:var(--muted)}
    .hero-panel{padding:18px;display:grid;gap:14px}
    .hero-panel .panel-top{padding:18px;border-radius:18px;background:linear-gradient(135deg,rgba(245,158,11,.10),rgba(37,99,235,.10));border:1px solid rgba(37,99,235,.12)}
    .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .mini{padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .mini strong{display:block;font-size:15px}
    .mini span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .section{padding:18px 0 8px}
    .section h2{margin:0 0 10px;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .section p.section-desc{margin:0 0 18px;color:#475569;max-width:62rem}
    .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,.service-card h3,.case-card h3,.article h3,.review h3{margin:0 0 10px;font-size:18px}
    .card p,.service-card p,.case-card p,.article p,.review p{margin:0;color:#475569}
    .badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;background:#f1f5f9;color:#334155;font-size:12px;font-weight:700;margin-bottom:12px}
    .service-card{padding:18px;min-height:100%}
    .service-card ul{margin:12px 0 0;padding-left:18px;color:#475569}
    .service-card li{margin:6px 0}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .panel{padding:22px}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:16px 16px 16px 18px;border-left:4px solid var(--brand)}
    .timeline b{display:block;margin-bottom:6px}
    .comparison{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:920px;background:#fff}
    th,td{padding:14px 16px;border-bottom:1px solid #f0eadf;text-align:left;vertical-align:top}
    th{background:#fbf8f2;font-size:14px;color:#334155}
    td{color:#475569}
    .score{font-size:28px;font-weight:800;color:#111827}
    .stars{color:#f59e0b;font-size:18px;letter-spacing:2px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#334155}
    .price-box{padding:18px}
    .price-row{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed #eadfcd}
    .price-row:last-child{border-bottom:0}
    .reviews .grid-3{grid-template-columns:repeat(3,1fr)}
    .review{padding:18px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .review .role{font-size:13px;color:#64748b}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;padding:18px 18px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:700;color:#111827;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px;color:#475569}
    .faq-item.open .faq-a{padding-bottom:18px;max-height:180px}
    .faq-icon{font-size:20px;color:#2563eb}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article{padding:18px}
    .article .meta{font-size:13px;color:#64748b;margin-top:10px}
    .form-box{padding:22px}
    form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:#1f2937}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid #d9cdb8;border-radius:14px;background:#fff;color:#111827;font:inherit;outline:none}
    textarea{min-height:130px;resize:vertical;grid-column:1/-1}
    .full{grid-column:1/-1}
    .form-actions{grid-column:1/-1;display:flex;gap:12px;flex-wrap:wrap}
    footer{margin-top:18px;background:#f3efe7;border-top:1px solid #e3d7c4;color:#1f2937}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px;padding:28px 0}
    .footer-grid a{color:#1d4ed8}
    .small{font-size:13px;color:#64748b}
    .contact-card{padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .qr{width:160px;border-radius:16px;border:1px solid var(--line)}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;box-shadow:var(--shadow);cursor:pointer}
    .back-top{opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s}
    .back-top.show{opacity:1;pointer-events:auto;transform:none}
    .reveal{opacity:0;transform:translateY(14px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .mobile-only{display:none}
    .hero-banner-group{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .banner img{border-radius:18px;border:1px solid var(--line)}
    .anchor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .anchor-grid a{padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line);font-weight:700;color:#1f2937}
    @media (max-width: 1024px){
      .hero-grid,.split,.footer-grid,.grid-4,.articles,.grid-3,.reviews .grid-3,.anchor-grid{grid-template-columns:1fr 1fr}
      .hero-banner-group{grid-template-columns:1fr}
      .hero-stats{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-only{display:block}
      .nav.open .nav-links{display:flex;position:absolute;left:20px;right:20px;top:76px;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)}
      form{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .container{padding:0 16px}
      .hero{padding-top:18px}
      .hero-copy,.hero-panel,.card,.panel,.service-card,.case-card,.review,.article,.price-box,.form-box{padding:18px}
      .hero-grid,.split,.footer-grid,.grid-4,.articles,.grid-3,.reviews .grid-3,.anchor-grid{grid-template-columns:1fr}
      .nav-cta .btn-ghost{display:none}
      .lead{font-size:16px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .btn{width:100%}
      .float-tools{right:12px;bottom:12px}
    }