:root{
      --bg:#f6f5f1;
      --panel:#ffffff;
      --panel-2:#fff7f2;
      --text:#1f2937;
      --muted:#5b6472;
      --line:#e7e1d8;
      --brand:#f04f6b;
      --brand-2:#ff8a3d;
      --brand-3:#5b6cff;
      --shadow:0 18px 50px rgba(32,42,55,.08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top left,#fff1f2 0,#fff1f200 28%),linear-gradient(180deg,#fffdfb 0%,#f6f5f1 42%,#f3f0ea 100%);color:var(--text)}
    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(255,250,245,.86);backdrop-filter:blur(16px);border-bottom:1px solid rgba(231,225,216,.9)}
    .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);box-shadow:0 8px 24px rgba(0,0,0,.05)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;color:var(--muted);font-size:12px;margin-top:4px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#384152;padding:8px 0;position:relative}
    .nav-links a:after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transform:scaleX(0);transform-origin:left;transition:.25s}
    .nav-links a:hover:after{transform:scaleX(1)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 30px rgba(240,79,107,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;width:44px;height:44px;align-items:center;justify-content:center}
    .menu-toggle span{display:block;width:18px;height:2px;background:#273244;position:relative}
    .menu-toggle span:before,.menu-toggle span:after{content:"";position:absolute;left:0;width:18px;height:2px;background:#273244}
    .menu-toggle span:before{top:-6px}.menu-toggle span:after{top:6px}

    main{padding:18px 0 0}
    section{padding:54px 0}
    .hero{padding:36px 0 40px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-card,.panel{background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(255,250,246,.96));border:1px solid rgba(231,225,216,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:34px;position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:50%;filter:blur(10px);opacity:.7;pointer-events:none}
    .hero-card:before{width:180px;height:180px;background:rgba(240,79,107,.14);right:-40px;top:-40px}
    .hero-card:after{width:220px;height:220px;background:rgba(91,108,255,.11);left:-70px;bottom:-80px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff1f4;color:#c52041;border:1px solid #ffd3dc;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,5vw,54px);line-height:1.1;margin:16px 0 14px;letter-spacing:-.03em}
    .lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:60ch;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
    .mini-stat{background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:18px;padding:16px}
    .mini-stat strong{display:block;font-size:24px}
    .mini-stat span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .hero-side{display:grid;gap:16px}
    .side-top,.side-bottom{padding:22px}
    .side-top h2,.side-bottom h2,.section-title h2{margin:0 0 10px;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .section-title p,.side-top p,.side-bottom p{margin:0;color:var(--muted);line-height:1.8}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#3b4654}
    .stats-grid,.service-grid,.industry-grid,.case-grid,.review-grid,.article-grid,.network-grid,.match-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .stats-grid{grid-template-columns:repeat(4,1fr)}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 30px rgba(25,35,50,.05);transition:.25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(25,35,50,.1)}
    .card h3{margin:0 0 8px;font-size:18px}
    .card p{margin:0;color:var(--muted);line-height:1.75}
    .metric{font-size:30px;font-weight:800;color:#172033}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .list li{display:flex;gap:10px;align-items:flex-start;color:#3a4656;line-height:1.75}
    .dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));margin-top:9px;flex:none}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:22px;border-radius:20px;background:linear-gradient(180deg,#fff,#fff7f2);border:1px solid var(--line)}
    .step .n{display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:800;margin-bottom:12px}
    .compare-wrap{overflow:auto;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}
    th{background:#fff7f2;font-size:14px}
    td{color:#394454;line-height:1.7}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eef3ff;color:#3146a6;font-size:12px;font-weight:700}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{letter-spacing:2px;color:#ff9d2e;font-size:18px}
    .faq{display:grid;gap:12px}
    .faq-item{border:1px solid var(--line);background:#fff;border-radius:18px;overflow:hidden}
    .faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;background:none;border:0;padding:18px 20px;font:inherit;font-weight:700;color:#1d2736;text-align:left;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:var(--muted);line-height:1.85}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:18px}
    .reviews .card{background:linear-gradient(180deg,#fff,#fff9f6)}
    .avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#ffe0e6,#ffe8d8);font-weight:800;color:#a83f55;margin-bottom:14px}
    .articles a,.network-grid a{display:block}
    .article-meta{font-size:13px;color:#8b6270;margin-top:10px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    input,select,textarea{width:100%;border:1px solid #dcd5cc;border-radius:16px;background:#fff;padding:14px 15px;font:inherit;color:var(--text);outline:none}
    textarea{min-height:132px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#f08aa0;box-shadow:0 0 0 4px rgba(240,79,107,.12)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:14px}
    .form-note{color:var(--muted);font-size:13px;line-height:1.7}
    .images-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .banner{border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#fff}
    .banner img{width:100%;height:auto;display:block}
    .article-grid .card{min-height:100%}
    footer{margin-top:10px;padding:28px 0 22px;background:#171b22;color:#e7edf8}
    footer .container{width:min(var(--container),calc(100% - 32px))}
    footer a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer-muted{color:#b4bfce;line-height:1.8}
    .footer-links{display:flex;flex-wrap:wrap;gap:12px}
    .footer-links a{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.08)}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:52px;height:52px;border-radius:16px;border:0;box-shadow:0 14px 30px rgba(0,0,0,.16);display:grid;place-items:center;cursor:pointer}
    .floating .kefu{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
    .floating .top{background:#fff;color:#1f2937;border:1px solid var(--line)}
    .nav-panel{display:none}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.5s ease}
    .scroll-reveal.visible{opacity:1;transform:none}
    .mobile-only{display:none}
    .service-network .card{background:linear-gradient(180deg,#fff,#fdf7ff)}
    .price-box{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price{padding:22px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .price strong{font-size:28px}
    .callout{padding:22px;border-radius:22px;background:linear-gradient(135deg,#fff1f4,#fff7eb);border:1px solid #ffd9d1}
    @media (max-width: 980px){
      .hero-grid,.two-col,.stats-grid,.service-grid,.industry-grid,.case-grid,.review-grid,.article-grid,.footer-grid,.steps,.price-box,.network-grid,.match-grid{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .nav-panel{display:none;padding:0 0 16px}
      .nav-panel.open{display:block}
      .nav-panel .panel-links{display:grid;grid-template-columns:1fr 1fr;gap:10px}
      .nav-panel .panel-links a{padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:14px}
      .hero-grid,.two-col,.stats-grid,.service-grid,.industry-grid,.case-grid,.review-grid,.article-grid,.footer-grid,.steps,.price-box,.network-grid,.match-grid,.images-grid,.form-grid{grid-template-columns:1fr}
      section{padding:42px 0}
      .hero-card{padding:24px}
      .lead{font-size:16px}
      .mobile-only{display:block}
      .desktop-only{display:none}
      table{min-width:760px}
    }