:root{
      --bg:#fff7f9;
      --bg2:#fffdfd;
      --card:#ffffff;
      --card2:#fff2f6;
      --line:#efd9df;
      --text:#2d2330;
      --muted:#6f6270;
      --brand:#e85b86;
      --brand2:#ff7aa2;
      --brand3:#a84dff;
      --shadow:0 18px 40px rgba(157, 78, 111, .12);
      --shadow2:0 10px 24px rgba(122, 56, 92, .10);
      --radius:22px;
      --radius2:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,122,162,.14), transparent 28%),
        radial-gradient(circle at top right, rgba(168,77,255,.10), transparent 24%),
        linear-gradient(180deg, #fff8fb 0%, #fffdfd 36%, #fff7f9 100%);
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky; top:0; z-index:60;
      backdrop-filter:saturate(150%) blur(14px);
      background:rgba(255,248,250,.82);
      border-bottom:1px solid rgba(239,217,223,.8);
    }
    .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; box-shadow:0 8px 18px rgba(0,0,0,.06)}
    .brand-name{font-size:1.05rem; font-weight:800; letter-spacing:.4px; white-space:nowrap}
    .brand-sub{font-size:.82rem; color:var(--muted); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
    .nav-links{display:flex; flex-wrap:wrap; align-items:center; justify-content:flex-end; gap:10px}
    .nav-links a{
      font-size:.92rem; padding:8px 12px; border-radius:999px;
      color:#493747; border:1px solid transparent; transition:.22s ease;
    }
    .nav-links a:hover,.nav-links a:focus-visible{background:#fff; border-color:var(--line); box-shadow:var(--shadow2); transform:translateY(-1px)}
    .menu-btn{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:12px; padding:10px 12px; font-size:.95rem;
    }
    .hero{
      padding:36px 0 18px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.25fr .85fr; gap:22px; align-items:stretch;
    }
    .hero-main, .hero-side, .section-card, .faq-card, .form-card, .review-card, .article-card, .feature-card, .timeline-card, .compare-card{
      background:linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,248,250,.98));
      border:1px solid rgba(239,217,223,.9);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-main{padding:28px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      font-size:.86rem; color:#8b3a5f; background:#fff1f6; border:1px solid #f4ccd8;
      padding:7px 12px; border-radius:999px; font-weight:700;
    }
    h1{margin:16px 0 14px; font-size:clamp(2rem, 4vw, 3.6rem); line-height:1.12; letter-spacing:-.03em}
    .lead{margin:0; color:var(--muted); font-size:1.02rem; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border-radius:14px; padding:12px 18px; font-weight:700; border:1px solid transparent;
      transition:.22s ease; cursor:pointer; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand3)); color:#fff; box-shadow:0 16px 28px rgba(232,91,134,.24)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 18px 36px rgba(232,91,134,.28)}
    .btn-ghost{background:#fff; border-color:var(--line); color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px); box-shadow:var(--shadow2)}
    .hero-badges{display:flex; flex-wrap:wrap; gap:10px; margin-top:18px}
    .chip{background:#fff; border:1px solid var(--line); color:#634e5a; padding:8px 12px; border-radius:999px; font-size:.9rem}
    .hero-side{padding:22px; display:flex; flex-direction:column; gap:14px}
    .stat-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .stat{
      background:linear-gradient(180deg, #fff, #fff7fb); border:1px solid rgba(239,217,223,.9);
      border-radius:18px; padding:16px;
    }
    .stat strong{display:block; font-size:1.38rem; color:#d14574}
    .stat span{display:block; color:var(--muted); font-size:.86rem; margin-top:6px}
    .hero-mini{
      padding:16px; border-radius:18px; background:linear-gradient(135deg, rgba(255,122,162,.14), rgba(168,77,255,.10));
      border:1px solid rgba(232,91,134,.12)
    }
    .section{padding:18px 0}
    .section-header{display:flex; align-items:end; justify-content:space-between; gap:16px; margin:0 0 14px}
    .section-header h2{margin:0; font-size:clamp(1.45rem, 2.4vw, 2.2rem)}
    .section-header p{margin:0; color:var(--muted); max-width:70ch}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
    .section-card, .feature-card, .review-card, .article-card, .compare-card, .timeline-card, .faq-card, .form-card{padding:20px}
    .feature-card h3, .review-card h3, .article-card h3, .timeline-card h3{margin:0 0 10px; font-size:1.05rem}
    .feature-card p, .review-card p, .article-card p, .timeline-card p{margin:0; color:var(--muted)}
    .kpi-list{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .kpi{
      background:linear-gradient(180deg, #fff, #fff5f9);
      border:1px solid var(--line); border-radius:18px; padding:18px;
    }
    .kpi strong{display:block; font-size:1.55rem; color:#c63d6e}
    .kpi span{color:var(--muted); font-size:.92rem}
    .two-col{display:grid; grid-template-columns:1.05fr .95fr; gap:16px; align-items:start}
    .bullet{padding-left:18px; margin:12px 0 0}
    .bullet li{margin:8px 0; color:var(--muted)}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:9px 12px; border-radius:999px; background:#fff; border:1px solid var(--line); color:#634e5a; font-size:.9rem}
    .timeline{display:grid; gap:12px}
    .timeline-item{display:grid; grid-template-columns:84px 1fr; gap:12px; align-items:start; padding:14px; border-radius:18px; background:#fff; border:1px solid var(--line)}
    .timeline-item b{color:#c43a68}
    .compare-wrap{overflow:auto; border-radius:18px; border:1px solid var(--line); background:#fff}
    table{width:100%; border-collapse:collapse; min-width:760px}
    th, td{padding:14px 14px; border-bottom:1px solid #f0e1e6; text-align:left; vertical-align:top}
    th{background:#fff4f7; color:#4a3644}
    tr:last-child td{border-bottom:none}
    .rating{display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin:12px 0 0}
    .stars{color:#ff9a3c; letter-spacing:2px}
    .quote{font-size:.96rem}
    .reviews{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .review-top{display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:10px}
    .avatar{
      width:42px; height:42px; border-radius:50%; display:grid; place-items:center;
      background:linear-gradient(135deg, #ffd0df, #e2c8ff); color:#6d2b4b; font-weight:800;
    }
    .review-meta{display:flex; align-items:center; gap:10px}
    .article-list{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .article-card .meta{font-size:.86rem; color:#8b6e7c}
    .cta-band{
      background:linear-gradient(135deg, rgba(232,91,134,.10), rgba(168,77,255,.08));
      border:1px solid rgba(232,91,134,.14); border-radius:24px; padding:22px; box-shadow:var(--shadow2)
    }
    .form-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    .field{display:flex; flex-direction:column; gap:8px}
    label{font-weight:700; font-size:.94rem}
    input, select, textarea{
      width:100%; border:1px solid #e8d7de; background:#fff; color:var(--text);
      border-radius:14px; padding:12px 14px; font:inherit; outline:none;
    }
    textarea{min-height:120px; resize:vertical}
    input:focus, select:focus, textarea:focus{border-color:#d96b92; box-shadow:0 0 0 4px rgba(232,91,134,.10)}
    .form-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:6px}
    .footer{
      margin-top:18px; padding:22px 0 28px; border-top:1px solid rgba(239,217,223,.8);
      background:linear-gradient(180deg, rgba(255,251,252,.86), rgba(255,247,249,.96));
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:18px; align-items:start}
    .footer a{color:#b43666}
    .footer small, .footer p{color:var(--muted)}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{padding:8px 10px; border-radius:10px; background:#fff; border:1px solid var(--line)}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:70; display:grid; gap:10px;
    }
    .float-btn{
      width:48px; height:48px; border-radius:16px; background:linear-gradient(135deg, var(--brand), var(--brand3));
      color:#fff; display:grid; place-items:center; box-shadow:0 14px 26px rgba(232,91,134,.25);
      border:none; cursor:pointer;
    }
    .backtop{opacity:0; pointer-events:none; transform:translateY(10px); transition:.22s ease}
    .backtop.show{opacity:1; pointer-events:auto; transform:translateY(0)}
    .floating-panel{
      position:fixed; right:16px; bottom:76px; width:min(320px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow);
      padding:14px; display:none; z-index:69;
    }
    .floating-panel.show{display:block}
    .floating-panel .qr{display:flex; gap:12px; align-items:center}
    .floating-panel img{width:88px; height:88px; object-fit:cover; border-radius:14px; border:1px solid var(--line)}
    .accordion{display:grid; gap:10px}
    .acc-item{border:1px solid var(--line); border-radius:16px; background:#fff; overflow:hidden}
    .acc-btn{
      width:100%; text-align:left; background:transparent; border:none; padding:14px 16px; font:inherit; font-weight:700; color:var(--text);
      display:flex; justify-content:space-between; gap:10px; cursor:pointer;
    }
    .acc-panel{max-height:0; overflow:hidden; transition:max-height .28s ease; padding:0 16px}
    .acc-panel p{margin:0; padding:0 0 14px; color:var(--muted)}
    .acc-item.open .acc-panel{max-height:220px}
    .acc-item.open .acc-btn .chev{transform:rotate(180deg)}
    .chev{transition:.22s ease}
    .mobile-only{display:none}
    .img-row{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    .img-card{border:1px solid var(--line); border-radius:18px; overflow:hidden; background:#fff}
    .img-card img{width:100%; height:auto}
    .img-card .cap{padding:12px 14px; color:var(--muted); font-size:.92rem}
    .service-net{display:grid; grid-template-columns:repeat(4,1fr); gap:12px}
    .net-item{padding:14px; border-radius:16px; background:#fff; border:1px solid var(--line)}
    .net-item b{display:block; margin-bottom:6px}
    .price-card{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .price{padding:16px; border-radius:18px; background:#fff; border:1px solid var(--line)}
    .price .num{font-size:1.45rem; font-weight:800; color:#c63d6e}
    .muted{color:var(--muted)}
    @media (max-width: 980px){
      .hero-grid,.two-col,.footer-grid,.grid-3,.grid-4,.reviews,.article-list,.kpi-list,.service-net,.price-card{grid-template-columns:1fr 1fr}
      .grid-4,.kpi-list,.service-net,.price-card{grid-template-columns:repeat(2,1fr)}
      .hero-grid,.two-col,.footer-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav-links.open{
        display:flex; position:absolute; left:16px; right:16px; top:68px; padding:14px;
        background:#fff; border:1px solid var(--line); border-radius:18px; box-shadow:var(--shadow); z-index:80;
      }
      .nav{position:relative}
      .section-header{flex-direction:column; align-items:flex-start}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero{padding-top:22px}
      .hero-main,.hero-side,.section-card,.faq-card,.form-card,.review-card,.article-card,.feature-card,.timeline-card,.compare-card{padding:16px}
      .form-grid,.grid-3,.grid-4,.reviews,.article-list,.kpi-list,.service-net,.price-card,.img-row{grid-template-columns:1fr}
      .stat-grid{grid-template-columns:1fr 1fr}
      .timeline-item{grid-template-columns:1fr}
      .mobile-only{display:block}
    }
    .reveal{opacity:0; transform:translateY(16px); transition:.65s ease}
    .reveal.show{opacity:1; transform:translateY(0)}