:root{
      --bg:#f6f7fb;
      --bg2:#ffffff;
      --card:#ffffff;
      --text:#172033;
      --muted:#5c6880;
      --line:#e4e8f2;
      --brand:#d92d6f;
      --brand2:#6a5cff;
      --brand3:#16b8a6;
      --shadow:0 18px 45px rgba(20,33,61,.08);
      --shadow2:0 10px 24px rgba(217,45,111,.15);
      --radius:22px;
      --radius2:16px;
      --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;color:var(--text);background:
      radial-gradient(circle at 10% 0%, rgba(106,92,255,.09), transparent 28%),
      radial-gradient(circle at 90% 10%, rgba(217,45,111,.10), transparent 22%),
      linear-gradient(180deg,#fafbff 0%, #f4f6fb 45%, #f7f8fc 100%);}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(250,251,255,.84);backdrop-filter:blur(16px);border-bottom:1px solid rgba(228,232,242,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:76px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand .ai-page-logo{width:40px;height:40px;object-fit:contain;border-radius:12px;background:#fff;padding:5px;box-shadow:0 8px 18px rgba(0,0,0,.08)}
    .brand strong{font-size:18px;letter-spacing:.5px}
    .brand span{display:block;font-size:12px;color:var(--muted);font-weight:600;margin-top:2px}
    .menu{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:14px;color:#2a3550;font-weight:600;padding:8px 10px;border-radius:999px;transition:.25s}
    .menu a:hover{background:#fff;color:var(--brand);box-shadow:0 8px 18px rgba(217,45,111,.12)}
    .nav-actions{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:.25s;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .btn-ghost{background:#fff;color:#24304b;border:1px solid var(--line)}
    .btn-ghost:hover{border-color:#cfd6e7;transform:translateY(-1px)}
    .burger{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center}
    .burger span,.burger span:before,.burger span:after{display:block;width:18px;height:2px;background:#24304b;border-radius:2px;position:relative}
    .burger span:before,.burger span:after{content:"";position:absolute;left:0}
    .burger span:before{top:-6px}.burger span:after{top:6px}
    main{overflow:hidden}
    section{padding:72px 0}
    .hero{padding:42px 0 68px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.feature,.review,.faq-item,.article,.timeline-item,.compare-wrap,.form-wrap,.panel{background:rgba(255,255,255,.78);border:1px solid rgba(228,232,242,.9);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-copy{padding:36px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(217,45,111,.10);color:#b61f5d;font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(34px,5vw,56px);line-height:1.06;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);margin:0 0 24px;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
    .mini-tags{display:flex;flex-wrap:wrap;gap:10px}
    .mini-tags span{padding:9px 12px;border-radius:999px;background:#f5f7ff;border:1px solid #e4e8f4;color:#34415c;font-size:13px;font-weight:600}
    .hero-panel{padding:26px;display:grid;gap:14px;align-content:start}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .stat{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff 0%,#fafbff 100%);border:1px solid var(--line)}
    .stat strong{display:block;font-size:24px;color:#132038}
    .stat span{font-size:13px;color:var(--muted)}
    .panel-list{display:grid;gap:12px}
    .panel-list div{display:flex;gap:10px;align-items:flex-start;padding:13px 14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand3));margin-top:5px;flex:0 0 auto}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:22px}
    .section-head h2{margin:0;font-size:clamp(26px,3vw,36px)}
    .section-head p{margin:0;color:var(--muted);max-width:64ch;line-height:1.75}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .card,.feature,.review,.faq-item,.article,.timeline-item,.panel{padding:22px}
    .card h3,.feature h3,.review h3,.article h3,.timeline-item h3{margin:0 0 10px;font-size:18px}
    .card p,.feature p,.review p,.article p,.timeline-item p{margin:0;color:var(--muted);line-height:1.75}
    .service-hero{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .feature{display:grid;gap:10px}
    .feature .tag{display:inline-flex;width:max-content;padding:7px 11px;border-radius:999px;background:#f2f5ff;color:#41507a;font-size:12px;font-weight:700}
    .workflows{display:grid;gap:16px}
    .step{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .step b{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
    table{width:100%;border-collapse:separate;border-spacing:0}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px;line-height:1.6}
    th{background:#f7f8fd;color:#24304b}
    .table-wrap{overflow-x:auto;border-radius:18px}
    .compare-wrap{padding:0;overflow:hidden}
    .compare-title{padding:22px 22px 0}
    .score{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:22px}
    .score .s{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}
    .s strong{font-size:28px}
    .faq{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;background:transparent;border:0;padding:20px;text-align:left;font-size:16px;font-weight:700;color:#1e2940;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;color:var(--muted);padding:0 20px}
    .faq-item.active .faq-a{max-height:180px;padding:0 20px 18px}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:.25s}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .review .meta{margin-top:14px;color:#41507a;font-size:13px;font-weight:700}
    .case-grid,.article-grid,.timeline-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case{padding:0;overflow:hidden}
    .case .media{aspect-ratio:16/9;background:linear-gradient(135deg,#fde7ef,#e9ecff);display:flex;align-items:center;justify-content:center;color:#8b3560;font-weight:800;letter-spacing:.08em}
    .case .body{padding:20px}
    .cloud{display:flex;flex-wrap:wrap;gap:10px}
    .cloud a,.cloud span{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#31405f}
    .form-wrap{display:grid;grid-template-columns:1fr .8fr;gap:18px;padding:22px}
    form{display:grid;gap:12px}
    .field{display:grid;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#23304b}
    .field input,.field select,.field textarea{width:100%;border:1px solid #d9dfeb;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:#172033;outline:none}
    .field textarea{min-height:120px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#b79cff;box-shadow:0 0 0 4px rgba(106,92,255,.10)}
    .side-box{display:grid;gap:14px;align-content:start}
    .contact-box{padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .contact-box img{width:150px;height:auto;border-radius:16px;border:1px solid var(--line)}
    footer{padding:32px 0 26px;background:#101725;color:#e7ecff;margin-top:0}
    footer a{color:#f39cbc}
    footer .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:start}
    footer .muted{color:#b8c2da;line-height:1.8}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:50px;height:50px;border-radius:16px;border:0;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow2);cursor:pointer}
    .top{opacity:0;transform:translateY(12px);transition:.25s;pointer-events:none}
    .top.show{opacity:1;transform:none;pointer-events:auto}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease, transform .55s ease}
    .reveal.in{opacity:1;transform:none}
    .mobile-menu{display:none}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px}
    .badge-row span{padding:8px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600}
    @media (max-width: 1024px){
      .hero-grid,.form-wrap,.grid-4,.reviews,.case-grid,.article-grid,.timeline-grid,.grid-3,.service-hero,footer .footer-grid{grid-template-columns:1fr}
      .menu{display:none}
      .burger{display:inline-flex}
      .mobile-menu{display:none;padding:0 0 16px}
      .mobile-menu.open{display:grid;gap:8px}
      .mobile-menu a{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line);font-weight:700;color:#21304a}
      .section-head{align-items:start;flex-direction:column}
      .score{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      section{padding:56px 0}
      .hero{padding-top:22px}
      .hero-copy,.hero-panel,.card,.feature,.review,.faq-item,.article,.timeline-item,.panel,.contact-box{padding:18px}
      .stat-grid{grid-template-columns:1fr}
      .btn{width:100%}
      .hero-actions{flex-direction:column}
    }