:root{
      --bg:#fff8fb;
      --bg2:#fff2f6;
      --card:#ffffff;
      --line:#f0cbd6;
      --line2:#f6dce4;
      --text:#2f2330;
      --muted:#6d5b67;
      --primary:#d91f67;
      --primary2:#ff5c93;
      --accent:#8a2be2;
      --shadow:0 18px 45px rgba(217,31,103,.12);
      --shadow2:0 10px 25px rgba(81,33,61,.08);
      --radius:22px;
      --radius2:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,92,147,.14), transparent 28%),
        radial-gradient(circle at top right, rgba(138,43,226,.10), transparent 26%),
        linear-gradient(180deg, #fff 0%, var(--bg) 100%);
    }
    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;
      backdrop-filter:saturate(150%) blur(14px);
      background:rgba(255,248,251,.82);
      border-bottom:1px solid rgba(240,203,214,.75);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:16px;
      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; border:1px solid var(--line); padding:4px; box-shadow:var(--shadow2)}
    .brand-txt{min-width:0}
    .brand-txt strong{display:block; font-size:16px; letter-spacing:.3px}
    .brand-txt span{display:block; font-size:12px; color:var(--muted); margin-top:2px}
    .menu-toggle{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      width:44px; height:44px; border-radius:14px; box-shadow:var(--shadow2); cursor:pointer;
    }
    .menu-toggle span{display:block; width:18px; height:2px; background:var(--text); margin:4px auto; border-radius:2px}
    .nav-links{display:flex; align-items:center; gap:14px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{
      font-size:14px; color:var(--muted); padding:8px 10px; border-radius:999px;
      transition:.2s ease; border:1px solid transparent;
    }
    .nav-links a:hover,.nav-links a.active{color:var(--primary); background:#fff; border-color:var(--line)}
    .hero{
      padding:30px 0 18px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.15fr .85fr; gap:22px; align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.data-card,.service-card,.compare-card,.review-card,.case-card,.article-card,.faq-item,.timeline-item,.pricing-card,.network-card,.about-card,.form-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(240,203,214,.85);
      box-shadow:var(--shadow2);
      border-radius:var(--radius);
    }
    .hero-main{
      padding:34px;
      position:relative; overflow:hidden;
      min-height:360px;
    }
    .hero-main:before,.hero-main:after{
      content:""; position:absolute; border-radius:50%;
      background:radial-gradient(circle, rgba(255,92,147,.18) 0%, rgba(255,92,147,0) 70%);
      pointer-events:none;
    }
    .hero-main:before{width:220px; height:220px; right:-40px; top:-20px}
    .hero-main:after{width:180px; height:180px; left:-30px; bottom:-50px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      background:linear-gradient(135deg, rgba(217,31,103,.12), rgba(138,43,226,.10));
      color:var(--primary); border:1px solid rgba(217,31,103,.16);
      padding:8px 12px; border-radius:999px; font-size:13px; font-weight:600;
    }
    h1{font-size:clamp(32px,4.2vw,54px); line-height:1.08; margin:16px 0 14px; letter-spacing:-.6px}
    .hero p{margin:0; color:var(--muted); font-size:16px; line-height:1.85; max-width:62ch}
    .cta-row{display:flex; gap:12px; flex-wrap:wrap; margin-top:24px}
    .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:14px; transition:.2s ease; cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2)); color:#fff; box-shadow:0 12px 30px rgba(217,31,103,.26)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-ghost{background:#fff; border-color:var(--line); color:var(--text)}
    .btn-ghost:hover{border-color:var(--primary); color:var(--primary); transform:translateY(-2px)}
    .hero-metrics{
      display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; margin-top:22px;
    }
    .mini-stat{
      background:linear-gradient(180deg,#fff, #fff8fb);
      border:1px solid var(--line2); border-radius:18px; padding:16px;
    }
    .mini-stat strong{display:block; font-size:22px; color:var(--primary)}
    .mini-stat span{display:block; color:var(--muted); font-size:13px; margin-top:4px; line-height:1.6}
    .hero-side{padding:18px; display:grid; gap:14px; align-content:start}
    .hero-side .topline{
      display:flex; justify-content:space-between; align-items:center; gap:10px; font-size:13px; color:var(--muted)
    }
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{
      padding:8px 11px; border-radius:999px; background:#fff7f9; border:1px solid var(--line2);
      color:#5b2a3b; font-size:13px;
    }
    .hero-side .focus-box{
      padding:16px; border-radius:18px; background:linear-gradient(135deg, rgba(217,31,103,.08), rgba(255,92,147,.04));
      border:1px solid rgba(217,31,103,.12)
    }
    .focus-box h3{margin:0 0 8px; font-size:18px}
    .focus-box ul{margin:0; padding:0 0 0 18px; color:var(--muted); line-height:1.8; font-size:14px}
    .section{padding:18px 0}
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:14px}
    .section-head h2{margin:0; font-size:28px; line-height:1.2}
    .section-head p{margin:0; color:var(--muted); max-width:72ch; line-height:1.75}
    .section-card{padding:24px}
    .grid-4{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px}
    .data-card{padding:18px}
    .data-card strong{display:block; font-size:28px; color:var(--primary)}
    .data-card span{display:block; margin-top:6px; font-size:14px; color:var(--muted); line-height:1.7}
    .grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .service-card,.review-card,.case-card,.article-card,.pricing-card,.network-card,.compare-card{padding:20px}
    .service-card h3,.review-card h3,.case-card h3,.article-card h3,.pricing-card h3,.network-card h3{margin:0 0 10px; font-size:18px}
    .service-card p,.review-card p,.case-card p,.article-card p,.pricing-card p,.network-card p{margin:0; color:var(--muted); line-height:1.8; font-size:14px}
    .icon-badge{
      width:42px; height:42px; border-radius:14px; display:grid; place-items:center; margin-bottom:12px;
      background:linear-gradient(135deg, rgba(217,31,103,.12), rgba(138,43,226,.10)); color:var(--primary); font-size:18px; font-weight:800;
    }
    .step-list,.timeline{display:grid; gap:12px}
    .step{
      display:grid; grid-template-columns:auto 1fr; gap:14px; align-items:start;
      padding:16px; border-radius:18px; border:1px solid var(--line2); background:#fff;
    }
    .step .num,.timeline .num{
      width:34px; height:34px; border-radius:50%; display:grid; place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--primary2)); color:#fff; font-weight:800; font-size:14px;
    }
    .step strong,.timeline strong{display:block; margin-bottom:4px}
    .step span,.timeline span{display:block; color:var(--muted); line-height:1.75; font-size:14px}
    .table-wrap{overflow:auto; border:1px solid var(--line2); border-radius:18px; background:#fff}
    table{width:100%; border-collapse:collapse; min-width:760px}
    th,td{padding:14px 16px; text-align:left; border-bottom:1px solid #f3e3e9; vertical-align:top; font-size:14px; line-height:1.65}
    th{background:#fff6f9; color:#432938}
    tr:last-child td{border-bottom:none}
    .highlight{color:var(--primary); font-weight:700}
    details{
      border:1px solid var(--line2); background:#fff; border-radius:18px; padding:0 16px;
    }
    details+details{margin-top:12px}
    summary{
      cursor:pointer; list-style:none; padding:16px 0; font-weight:700; display:flex; justify-content:space-between; gap:10px; align-items:center;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+"; color:var(--primary); font-size:20px; line-height:1}
    details[open] summary:after{content:"−"}
    details p{margin:0 0 16px; color:var(--muted); line-height:1.8}
    .reviews-grid,.case-grid,.article-grid,.pricing-grid,.network-grid{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .avatar{
      width:44px; height:44px; border-radius:50%;
      background:linear-gradient(135deg, rgba(217,31,103,.16), rgba(138,43,226,.14));
      display:grid; place-items:center; color:var(--primary); font-weight:800; margin-bottom:10px;
    }
    .quote{font-size:14px; line-height:1.8; color:var(--muted); margin:0}
    .meta{margin-top:12px; font-size:13px; color:#7a6671}
    .case-card ul,.pricing-card ul,.network-card ul,.about-card ul{margin:10px 0 0; padding:0 0 0 18px; color:var(--muted); line-height:1.8; font-size:14px}
    .split{
      display:grid; grid-template-columns:1.05fr .95fr; gap:14px; align-items:start;
    }
    .about-card,.form-card{padding:22px}
    .media-box{
      border-radius:20px; overflow:hidden; border:1px solid var(--line2); background:#fff
    }
    .media-box img{width:100%; height:auto}
    .form-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px}
    .field{display:flex; flex-direction:column; gap:8px}
    label{font-size:14px; font-weight:600}
    input,select,textarea{
      width:100%; border:1px solid #e8d4dc; background:#fff; color:var(--text);
      padding:13px 14px; border-radius:14px; font:inherit; outline:none; transition:.2s ease;
    }
    input:focus,select:focus,textarea:focus{border-color:var(--primary); box-shadow:0 0 0 4px rgba(217,31,103,.08)}
    textarea{min-height:120px; resize:vertical}
    .form-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:6px}
    .footer{
      margin-top:18px; padding:22px 0 30px; border-top:1px solid rgba(240,203,214,.85);
      background:linear-gradient(180deg, rgba(255,248,251,.75), rgba(255,240,245,.95));
      color:var(--text);
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr .95fr; gap:18px}
    .footer h3{margin:0 0 10px; font-size:16px}
    .footer p,.footer a{color:var(--text); font-size:14px; line-height:1.8}
    .footer a:hover{color:var(--primary)}
    .footer .links{display:flex; flex-wrap:wrap; gap:10px}
    .footer .links a{padding:7px 10px; border:1px solid var(--line2); background:#fff; border-radius:999px}
    .copyright{margin-top:16px; padding-top:14px; border-top:1px solid rgba(240,203,214,.8); font-size:13px; color:#786672; line-height:1.7}
    .floating{
      position:fixed; right:16px; bottom:18px; z-index:60; display:grid; gap:10px;
    }
    .float-btn{
      width:52px; height:52px; border-radius:16px; display:grid; place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--primary2)); color:#fff; box-shadow:0 12px 24px rgba(217,31,103,.28);
      border:none; cursor:pointer; font-size:18px; transition:.2s ease;
    }
    .float-btn:hover{transform:translateY(-2px)}
    .chat-panel{
      position:fixed; right:16px; bottom:82px; z-index:59; width:min(320px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line2); box-shadow:var(--shadow); border-radius:22px; padding:16px;
      display:none;
    }
    .chat-panel.open{display:block}
    .chat-panel h4{margin:0 0 8px; font-size:16px}
    .chat-panel p{margin:0 0 12px; color:var(--muted); font-size:14px; line-height:1.7}
    .chat-panel .qr{display:flex; gap:12px; align-items:center}
    .chat-panel .qr img{width:86px; height:86px; object-fit:cover; border-radius:14px; border:1px solid var(--line2)}
    .scroll-top{position:fixed; right:16px; bottom:144px; z-index:58; display:none}
    .scroll-top.show{display:grid}
    .home-link-wrap{margin-top:14px}
    .home-link-wrap a{display:inline-flex}
    .badge-line{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
    .small-note{font-size:13px; color:var(--muted); line-height:1.7}
    .flow-tags{display:flex; flex-wrap:wrap; gap:10px; margin-top:10px}
    .flow-tags span{padding:7px 10px; border:1px dashed #e6c3d0; border-radius:999px; color:#664152; background:#fff}
    .section-anchor{scroll-margin-top:90px}
    .fade-in{opacity:0; transform:translateY(14px); transition:.5s ease}
    .fade-in.show{opacity:1; transform:translateY(0)}
    @media (max-width: 980px){
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.reviews-grid,.case-grid,.article-grid,.pricing-grid,.network-grid{grid-template-columns:1fr 1fr}
      .hero-main{min-height:auto}
    }
    @media (max-width: 720px){
      .menu-toggle{display:inline-block}
      .nav-links{
        display:none; position:absolute; left:16px; right:16px; top:70px; padding:12px;
        border-radius:18px; background:#fff; border:1px solid var(--line2); box-shadow:var(--shadow); flex-direction:column; align-items:flex-start;
      }
      .nav-links.open{display:flex}
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.reviews-grid,.case-grid,.article-grid,.pricing-grid,.network-grid,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .section-card,.about-card,.form-card,.service-card,.review-card,.case-card,.article-card,.pricing-card,.network-card,.compare-card{padding:18px}
      .section-head{flex-direction:column; align-items:flex-start}
      .hero-metrics{grid-template-columns:1fr}
      h1{font-size:30px}
    }