:root{
      --bg:#fff7f7;
      --panel:#ffffff;
      --panel-2:#fff0f2;
      --line:#f2c7cf;
      --text:#2e2430;
      --muted:#6f5a69;
      --primary:#e83f77;
      --primary-2:#ff6b9a;
      --accent:#ffb1c8;
      --shadow:0 18px 50px rgba(184, 63, 103, .12);
      --radius:22px;
      --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;background:radial-gradient(circle at top left,#ffe7ee 0,#fff7f7 32%,#fff 100%);color:var(--text)}
    a{color:var(--primary);text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(255,247,247,.84);backdrop-filter:blur(12px);border-bottom:1px solid rgba(242,199,207,.7)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 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}
    .brand h1{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;align-items:center}
    .nav-links a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:var(--panel-2);color:var(--primary)}
    .nav-cta{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 ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 14px 30px rgba(232,63,119,.22)}
    .btn-secondary{background:#fff;color:var(--primary);border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    main{overflow:hidden}
    section{padding:68px 0}
    .hero{padding:34px 0 50px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-card,.glass-card,.panel,.faq-item,.review-card,.article-card,.case-card,.timeline-item,.price-card,.contact-card,.compare-card,.form-card{background:var(--panel);border:1px solid rgba(242,199,207,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:30px;position:relative;overflow:hidden}
    .hero-card:before{content:"";position:absolute;inset:auto -60px -60px auto;width:220px;height:220px;background:radial-gradient(circle,#ffb6cb 0,rgba(255,182,203,.1) 68%,transparent 70%);border-radius:50%}
    .badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:var(--panel-2);color:var(--primary);font-weight:700;font-size:13px}
    .hero h2{margin:16px 0 14px;font-size:clamp(30px,4vw,54px);line-height:1.05}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.9;max-width:64ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#fff7fa);border:1px solid var(--line)}
    .stat strong{display:block;font-size:22px;color:var(--primary)}
    .stat span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}
    .hero-side{display:grid;gap:16px}
    .mini-panel{padding:22px}
    .mini-panel h3{margin:0 0 10px;font-size:18px}
    .mini-panel ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.85}
    .metric-grid,.service-grid,.benefit-grid,.review-grid,.article-grid,.case-grid,.compare-grid,.price-grid,.network-grid,.faq-grid,.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .metric,.service,.feature,.review-card,.article-card,.case-card,.price-card,.compare-card,.contact-card{padding:22px}
    .metric strong{display:block;font-size:28px;color:var(--primary)}
    .metric p,.service p,.feature p,.review-card p,.article-card p,.case-card p,.price-card p,.compare-card p,.contact-card p{margin:10px 0 0;color:var(--muted);line-height:1.75}
    h2.section-title{margin:0 0 10px;font-size:clamp(24px,3vw,36px);line-height:1.15}
    .section-desc{margin:0 0 24px;color:var(--muted);line-height:1.8;max-width:72ch}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:20px;background:linear-gradient(180deg,#fff,#fff7f9);border:1px solid var(--line);border-radius:20px}
    .step .num{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:var(--primary);color:#fff;font-weight:800;margin-bottom:10px}
    .table-wrap{overflow-x:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid #f4dde3;text-align:left;vertical-align:top}
    th{background:#fff3f6;color:#402b35}
    td{color:var(--text)}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tags span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#5d4658;font-size:13px}
    .accordion{display:grid;gap:12px}
    .faq-item button{width:100%;padding:18px 20px;border:0;background:transparent;text-align:left;font-size:16px;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer}
    .faq-item .answer{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease;color:var(--muted);padding:0 20px}
    .faq-item.open .answer{max-height:220px;padding:0 20px 18px;line-height:1.8}
    .faq-item .icon{transition:transform .25s ease}
    .faq-item.open .icon{transform:rotate(45deg)}
    .review-card{position:relative}
    .review-card .role{color:var(--primary);font-weight:700;font-size:13px}
    .stars{color:#ff8f30;letter-spacing:2px;margin:8px 0 10px}
    .article-card a,.case-card a{font-weight:700}
    .timeline{display:grid;gap:14px}
    .timeline-item{padding:20px 22px;display:grid;grid-template-columns:90px 1fr;gap:16px;align-items:start}
    .timeline-item strong{color:var(--primary)}
    .contact-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .contact-form .full{grid-column:1/-1}
    input,select,textarea{width:100%;padding:14px 15px;border-radius:14px;border:1px solid #e7c8d1;background:#fff;color:var(--text);font:inherit;outline:none}
    input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(232,63,119,.12)}
    textarea{min-height:118px;resize:vertical}
    .footer{padding:26px 0 30px;background:#fff4f6;border-top:1px solid var(--line);color:var(--text)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer small,.footer p,.footer a{color:var(--muted)}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;display:grid;place-items:center;box-shadow:var(--shadow);cursor:pointer}
    .floating a{color:var(--primary)}
    .backtop{display:none}
    .kefu{position:fixed;left:16px;bottom:16px;z-index:60;max-width:160px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:10px}
    .kefu p{margin:8px 0 0;font-size:12px;color:var(--muted);line-height:1.5}
    .image-row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .ai-page-image{border-radius:18px;border:1px solid var(--line);background:#fff}
    .subtle{color:var(--muted)}
    @media (max-width: 960px){
      .hero-grid,.two-col,.footer-grid{grid-template-columns:1fr}
      .metric-grid,.service-grid,.benefit-grid,.review-grid,.article-grid,.case-grid,.compare-grid,.price-grid,.network-grid,.faq-grid,.feature-grid,.steps{grid-template-columns:1fr 1fr}
      .timeline-item{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{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)}
      .nav.open .nav-links a{width:100%}
    }
    @media (max-width: 640px){
      section{padding:56px 0}
      .metric-grid,.service-grid,.benefit-grid,.review-grid,.article-grid,.case-grid,.compare-grid,.price-grid,.network-grid,.faq-grid,.feature-grid,.steps,.hero-stats,.image-row,.contact-form{grid-template-columns:1fr}
      .hero-card{padding:22px}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
      .kefu{max-width:132px}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
    .reveal.in{opacity:1;transform:none}