:root{
      --bg:#fff7f3;
      --bg2:#fffdfb;
      --card:#ffffff;
      --text:#1f2430;
      --muted:#5f6778;
      --line:#edd9d0;
      --brand:#d72638;
      --brand2:#ff5a3d;
      --accent:#ff8a5b;
      --shadow:0 18px 40px rgba(196,52,59,.12);
      --shadow2:0 10px 24px rgba(31,36,48,.08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#fff3ef 0%,#fff8f4 22%,#fffdfb 58%,#fff6f1 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(255,250,247,.9);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid rgba(237,217,208,.75)}
    .nav{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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:var(--shadow2);padding:4px}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .navlinks{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .navlinks a{font-size:14px;color:#3a4250;padding:8px 10px;border-radius:999px;transition:.2s}
    .navlinks a:hover,.navlinks a.active{background:#fff;color:var(--brand);box-shadow:0 8px 20px rgba(215,38,56,.08)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .hero{position:relative;overflow:hidden;padding:34px 0 18px}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(10px);opacity:.55;pointer-events:none}
    .hero::before{width:240px;height:240px;background:radial-gradient(circle,rgba(215,38,56,.18),transparent 68%);right:-40px;top:-10px}
    .hero::after{width:260px;height:260px;background:radial-gradient(circle,rgba(255,90,61,.14),transparent 70%);left:-70px;bottom:-70px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.mini-card,.review,.faq-item,.article-item,.deal-card,.pricing-card,.process-step,.feature-card,.case-card,.metric,.info-card{background:linear-gradient(180deg,#fff 0%,#fffaf8 100%);border:1px solid rgba(237,217,208,.9);border-radius:var(--radius);box-shadow:var(--shadow2)}
    .hero-main{padding:30px;position:relative}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(215,38,56,.08);color:var(--brand);font-weight:700;font-size:13px}
    h1{margin:16px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.08;letter-spacing:-.02em}
    .hero-main p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:58ch}
    .cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:14px;font-weight:700;transition:.22s;border:1px solid transparent}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 30px rgba(215,38,56,.22)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-secondary{background:#fff;color:var(--brand);border-color:#f0c4c6}
    .btn-secondary:hover{background:#fff5f4}
    .hero-side{padding:18px;display:grid;gap:14px}
    .hero-side .mini-card{padding:16px}
    .mini-card h3,.section-title{margin:0 0 10px}
    .mini-card p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0 0}
    .metric{padding:18px}
    .metric strong{display:block;font-size:26px;color:var(--brand);line-height:1.1}
    .metric span{display:block;margin-top:8px;color:var(--muted);font-size:13px;line-height:1.6}
    section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:14px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:64ch}
    .section-title{font-size:28px;line-height:1.15}
    .section-card{padding:24px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .feature-card,.case-card,.review,.faq-item,.article-item,.deal-card,.pricing-card,.process-step,.info-card{padding:18px}
    .feature-card h3,.case-card h3,.review h3,.pricing-card h3,.deal-card h3,.process-step h3,.info-card h3{margin:0 0 10px;font-size:18px}
    .feature-card p,.case-card p,.review p,.pricing-card p,.deal-card p,.process-step p,.info-card p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .chip-row,.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:8px 12px;border-radius:999px;background:#fff3f1;border:1px solid #f2d1cb;color:#a33e39;font-size:13px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-grid .feature-card{min-height:190px}
    .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step-no{display:inline-flex;width:36px;height:36px;border-radius:12px;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(215,38,56,.12),rgba(255,90,61,.12));color:var(--brand);font-weight:800;margin-bottom:14px}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:14px 16px;border-bottom:1px solid #f1e4dd;text-align:left;vertical-align:top;font-size:14px;line-height:1.65}
    th{background:#fff7f4;color:#7f2f29}
    tr:last-child td{border-bottom:none}
    .rating{display:flex;gap:3px;color:#ff9b00;font-size:18px;margin:6px 0}
    .quote{font-size:15px;color:#3b4252;line-height:1.8}
    .review .meta{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-bottom:8px;color:var(--muted);font-size:13px}
    .faq-item button{width:100%;border:none;background:transparent;padding:0;text-align:left;color:var(--text);font-size:16px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px}
    .faq-item .answer{max-height:0;overflow:hidden;transition:max-height .28s ease;margin-top:0}
    .faq-item.active .answer{max-height:180px;margin-top:12px}
    .faq-item .answer p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .article-item a{display:block;font-weight:700;color:var(--text);margin-bottom:8px}
    .article-item a:hover{color:var(--brand)}
    .article-item span{color:var(--muted);font-size:13px;line-height:1.7}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    form{display:grid;gap:12px}
    .field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    input,select,textarea{width:100%;border:1px solid #e7d3cb;background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s}
    textarea{min-height:122px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#ea7964;box-shadow:0 0 0 4px rgba(215,38,56,.08)}
    .contact-list{display:grid;gap:12px}
    .contact-list .info-card{display:flex;gap:14px;align-items:flex-start}
    .icon-dot{width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,rgba(215,38,56,.14),rgba(255,90,61,.12));display:flex;align-items:center;justify-content:center;color:var(--brand);font-weight:900;flex:none}
    .footer{padding:20px 0 32px;border-top:1px solid rgba(237,217,208,.9);background:#fff9f6;color:var(--text)}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px}
    .footer a{color:#3c4451}
    .footer a:hover{color:var(--brand)}
    .floatbar{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 14px 28px rgba(215,38,56,.25);font-weight:900}
    .float-btn.light{background:#fff;color:var(--brand);border:1px solid #f0c4c6}
    .fade-up{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
    .fade-up.show{opacity:1;transform:none}
    .service-map{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .list{margin:0;padding-left:18px;color:var(--muted);line-height:1.8}
    .timeline{display:grid;gap:12px}
    .timeline .info-card{position:relative;padding-left:18px}
    .timeline .info-card::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:10px;background:linear-gradient(180deg,var(--brand),var(--brand2))}
    .table-note{padding:12px 0 0;color:var(--muted);font-size:13px}
    .articles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .support-wrap{display:grid;grid-template-columns:1fr 320px;gap:16px;align-items:start}
    .qr{padding:16px;text-align:center}
    .qr img{width:100%;max-width:240px;margin:0 auto;border-radius:18px}
    .subtle{color:var(--muted)}
    @media (max-width: 980px){
      .hero-grid,.form-grid,.footer-grid,.support-wrap{grid-template-columns:1fr}
      .metrics,.service-grid,.step-grid,.grid-3,.grid-2,.service-map,.articles-grid{grid-template-columns:repeat(2,1fr)}
      .navlinks{display:none}
      .menu-btn{display:inline-flex}
      .navlinks.open{display:flex;position:absolute;left:16px;right:16px;top:64px;background:#fff;padding:12px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
    }
    @media (max-width: 640px){
      .metrics,.service-grid,.step-grid,.grid-3,.grid-2,.service-map,.articles-grid,.field-grid{grid-template-columns:1fr}
      .section-title{font-size:24px}
      h1{font-size:30px}
      .hero-main,.section-card{padding:20px}
      .nav{position:relative}
      .brand h2{font-size:16px}
      .brand p{display:none}
    }