:root{
      --bg:#f7f4ef;
      --bg2:#fffaf4;
      --card:#ffffff;
      --text:#1c2430;
      --muted:#5f6b7c;
      --line:#e8ddd1;
      --brand:#ef4b6c;
      --brand2:#ff8a00;
      --brand3:#6c63ff;
      --green:#16856a;
      --shadow:0 18px 50px rgba(34, 48, 68, .10);
      --radius:22px;
      --radius2:16px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 10%, rgba(239,75,108,.10), transparent 22%),
        radial-gradient(circle at 85% 5%, rgba(108,99,255,.10), transparent 18%),
        linear-gradient(180deg, var(--bg2), var(--bg) 36%, #fbfaf7 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:60;
      backdrop-filter:blur(16px);
      background:rgba(255,255,255,.78);
      border-bottom:1px solid rgba(232,221,209,.7);
    }
    .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;border-radius:12px;object-fit:cover;box-shadow:0 8px 20px rgba(0,0,0,.08)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:18px;line-height:1.2}
    .brand-text span{display:block;color:var(--muted);font-size:12px}
    .nav-links{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:10px}
    .nav-links a,.nav-links button{
      border:1px solid transparent;
      background:transparent;
      color:var(--text);
      padding:9px 12px;
      border-radius:999px;
      font-size:14px;
      cursor:pointer;
      transition:.25s ease;
    }
    .nav-links a:hover,.nav-links button:hover{background:#fff;border-color:var(--line);box-shadow:0 10px 20px rgba(0,0,0,.05)}
    .nav-cta{
      background:linear-gradient(135deg,var(--brand),var(--brand2)) !important;
      color:#fff !important;
      box-shadow:0 12px 24px rgba(239,75,108,.24);
    }
    .menu-btn{display:none}
    .hero{
      padding:34px 0 22px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.18fr .82fr;gap:24px;align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.metric,.feature,.step,.review,.case,.faq-item,.article,.compare,.form-card,.glass{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(232,221,209,.9);
      box-shadow:var(--shadow);
    }
    .hero-main{
      border-radius:30px;padding:34px;
      position:relative;overflow:hidden;
    }
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none;
    }
    .hero-main:before{width:240px;height:240px;background:radial-gradient(circle, rgba(239,75,108,.12), transparent 62%);right:-70px;top:-40px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle, rgba(108,99,255,.12), transparent 62%);left:-40px;bottom:-20px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:rgba(239,75,108,.09);color:#b92d49;font-size:13px;font-weight:700;
      position:relative;z-index:1;
    }
    h1{font-size:clamp(32px,4.6vw,58px);line-height:1.06;margin:14px 0 14px;letter-spacing:-.02em}
    .hero p{font-size:16px;color:var(--muted);margin:0 0 18px;max-width:62ch;position:relative;z-index:1}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;border:1px solid transparent;
      font-weight:700;font-size:15px;transition:.25s ease;cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;box-shadow:0 16px 30px rgba(108,99,255,.18)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;position:relative;z-index:1}
    .tag{padding:8px 12px;border-radius:999px;background:#fff7ef;border:1px solid #f4d7bb;color:#8b5b2d;font-size:13px}
    .hero-side{
      border-radius:30px;padding:22px;display:flex;flex-direction:column;gap:14px
    }
    .mini-panel{
      border-radius:22px;padding:18px;background:linear-gradient(180deg,#fff,#fffaf6);border:1px solid var(--line)
    }
    .mini-panel h3{margin:0 0 8px;font-size:18px}
    .mini-panel p{margin:0;color:var(--muted);font-size:14px}
    .quick-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    .quick{
      padding:12px;border-radius:16px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text)
    }
    .section{padding:16px 0 0}
    .section h2{font-size:28px;line-height:1.15;margin:0 0 12px}
    .section-desc{margin:0 0 18px;color:var(--muted);max-width:72ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .metric,.feature,.step,.review,.case,.article,.compare,.form-card,.section-card{border-radius:24px;padding:20px}
    .metric strong{display:block;font-size:30px;line-height:1.1;margin-bottom:6px}
    .metric span{color:var(--muted);font-size:14px}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(239,75,108,.12),rgba(108,99,255,.12));
      color:#91304f;font-weight:800;margin-bottom:12px
    }
    .feature h3,.step h3,.review h3,.case h3,.article h3,.compare h3{margin:0 0 8px;font-size:18px}
    .feature p,.step p,.review p,.case p,.article p,.compare p{margin:0;color:var(--muted);font-size:14px}
    .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
    .chip{padding:7px 10px;border-radius:999px;background:#f7f7ff;color:#4f57b8;border:1px solid #e4e6ff;font-size:12px}
    .service-flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .step{position:relative}
    .step .num{
      display:inline-flex;align-items:center;justify-content:center;
      width:32px;height:32px;border-radius:999px;background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff;font-weight:800;margin-bottom:10px
    }
    .compare-wrap{overflow:auto;border-radius:24px}
    table{width:100%;border-collapse:collapse;min-width:860px;background:#fff}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#fff7f8;font-size:14px}
    .score{font-weight:800;color:#b92d49}
    .badge-star{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;background:#fff3d8;border:1px solid #f2d28d;border-radius:999px;color:#8a5a00;font-weight:700}
    .faqs .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;padding:18px 20px;background:transparent;border:0;text-align:left;
      display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16px;font-weight:700;color:var(--text);cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-a p{margin:0 0 18px;color:var(--muted)}
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .faq-q .plus{transform:rotate(45deg)}
    .plus{transition:.25s ease;font-size:22px;color:var(--brand)}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .timeline .feature{min-height:100%}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
    .stars{color:#ff9f1a;letter-spacing:2px;font-size:14px}
    .case-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article .meta-line{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px;color:var(--muted);font-size:13px}
    .panel{
      border-radius:24px;padding:22px;background:linear-gradient(180deg,#fff,#fffaf7);border:1px solid var(--line)
    }
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid #dcd4c8;border-radius:14px;padding:12px 14px;
      font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#b78aff;box-shadow:0 0 0 4px rgba(183,138,255,.14)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:6px}
    .contact-box{display:grid;grid-template-columns:1fr .88fr;gap:16px;align-items:start}
    .qr{
      display:flex;flex-direction:column;gap:12px;align-items:center;text-align:center
    }
    .qr img{width:min(220px,100%);border-radius:18px;border:1px solid var(--line);background:#fff;padding:10px}
    footer{
      margin-top:22px;
      background:#19202b;color:#eef3fb;border-top:1px solid rgba(255,255,255,.08)
    }
    footer a{color:#ffe0a8}
    .footer-inner{padding:28px 0}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer-grid h3{margin:0 0 10px;font-size:17px;color:#fff}
    .footer-grid p,.footer-grid li{margin:0;color:#cfd7e4;font-size:14px}
    .footer-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
    .footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;padding-top:18px;margin-top:18px;border-top:1px solid rgba(255,255,255,.08)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:70;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;
      box-shadow:0 18px 28px rgba(239,75,108,.28);border:0;cursor:pointer
    }
    .客服, .wechat-pop{
      position:fixed;right:16px;bottom:82px;z-index:69;display:none;
      width:min(320px, calc(100vw - 32px));background:#fff;border:1px solid var(--line);
      border-radius:22px;box-shadow:var(--shadow);padding:16px
    }
    .客服.show{display:block}
    .wechat-pop img{width:100%;border-radius:16px}
    .sticky-note{
      display:flex;flex-wrap:wrap;gap:10px;margin-top:16px
    }
    .note{
      padding:10px 12px;border-radius:14px;background:#fff;border:1px dashed #e6d9c9;color:#6d5538;font-size:13px
    }
    .fade-in{opacity:0;transform:translateY(14px);transition:.6s ease}
    .fade-in.visible{opacity:1;transform:none}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud .tag{background:#fff;border-color:#ead9c7;color:#684c28}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price .amount{font-size:28px;font-weight:900;color:#b92d49}
    .divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:18px 0}
    .mobile-only{display:none}
    @media (max-width: 1060px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.service-flow,.timeline,.case-list,.article-list,.footer-grid,.contact-box,.price-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:66px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}
      .nav-links.open{display:flex}
      .menu-btn{display:inline-flex}
      .hero{padding-top:16px}
      .hero-grid,.grid-4,.grid-3,.grid-2,.service-flow,.timeline,.case-list,.article-list,.footer-grid,.contact-box,.price-grid,.form-grid{grid-template-columns:1fr}
      .hero-main,.hero-side,.section-card,.metric,.feature,.step,.review,.case,.faq-item,.article,.compare,.form-card{border-radius:22px;padding:18px}
      h1{font-size:30px}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .floating{right:12px;bottom:12px}
      .客服,.wechat-pop{right:12px;bottom:78px}
    }
    .mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}
    .mini-stats div{padding:12px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .mini-stats strong{display:block;font-size:20px}
    .mini-stats span{color:var(--muted);font-size:12px}