:root{
      --bg:#f3faf6;
      --bg2:#ffffff;
      --card:#ffffff;
      --line:#d9eadf;
      --text:#173027;
      --muted:#5d7268;
      --brand:#2f9f78;
      --brand2:#7bd3a9;
      --brand3:#dff7ea;
      --accent:#1f7d5f;
      --shadow:0 14px 35px rgba(28, 66, 48, .08);
      --radius:20px;
      --radius2:28px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Segoe UI,Roboto,Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(123,211,169,.22), transparent 26%),
        radial-gradient(circle at top right, rgba(47,159,120,.14), transparent 24%),
        linear-gradient(180deg, #f8fcf9 0%, #f3faf6 36%, #eff8f3 100%);
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(248,252,249,.82);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,234,223,.8)}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;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:10px;background:#fff;padding:4px;box-shadow:0 6px 18px rgba(47,159,120,.12)}
    .brand strong{font-size:18px;letter-spacing:.5px}
    .brand small{display:block;color:var(--muted);font-weight:600;font-size:12px}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:#285143;padding:8px 10px;border-radius:999px;transition:.25s ease}
    .nav a:hover{background:var(--brand3);color:var(--accent)}
    .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),#48bc8f);color:#fff;box-shadow:0 12px 28px rgba(47,159,120,.18)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(47,159,120,.24)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--accent)}
    .btn-ghost:hover{background:#f4fbf7}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);width:42px;height:42px;border-radius:12px}
    .menu-toggle span{display:block;width:18px;height:2px;background:var(--text);margin:4px auto;border-radius:2px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-panel,.section-card,.soft-box,.faq-item,.review-card,.case-card,.article-card,.metric,.adv-card,.step-card,.pricing-card,.compare-card,.form-card{background:var(--card);border:1px solid rgba(217,234,223,.92);border-radius:var(--radius2);box-shadow:var(--shadow)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--brand3);color:var(--accent);border:1px solid rgba(47,159,120,.14);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.12;letter-spacing:-.5px}
    .lead{font-size:17px;color:var(--muted);margin:0 0 22px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
    .point{padding:14px 14px 12px;border-radius:18px;background:linear-gradient(180deg,#f7fcf9,#eef9f3);border:1px solid var(--line)}
    .point strong{display:block;font-size:18px}
    .point span{color:var(--muted);font-size:13px}
    .hero-panel{padding:22px;display:grid;gap:14px;align-content:start}
    .hero-panel .topline{display:flex;justify-content:space-between;align-items:center;gap:12px}
    .tag{padding:6px 10px;border-radius:999px;background:#f0fbf5;color:var(--accent);font-size:12px;font-weight:700}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .metric{padding:16px;border-radius:18px}
    .metric strong{display:block;font-size:28px;line-height:1;color:var(--accent)}
    .metric span{display:block;color:var(--muted);font-size:13px;margin-top:6px}
    .hero-list{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .hero-list li{padding:12px 14px;border-radius:16px;background:#f7fcf9;border:1px solid var(--line);color:#295144}
    .section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(24px,2.6vw,34px)}
    .section-head p{margin:0;color:var(--muted);max-width:760px}
    .section-card{padding:24px}
    .about-grid,.services-grid,.industry-grid,.review-grid,.case-grid,.article-grid,.adv-grid,.step-grid,.compare-grid,.network-grid,.faq-grid{display:grid;gap:16px}
    .about-grid{grid-template-columns:1.1fr .9fr}
    .soft-box{padding:22px;background:linear-gradient(180deg,#fff, #f7fcf8)}
    .pill-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:10px 12px;border-radius:999px;background:#f2faf5;border:1px solid var(--line);font-size:13px;color:#285143}
    .services-grid{grid-template-columns:repeat(3,1fr)}
    .adv-grid{grid-template-columns:repeat(4,1fr)}
    .adv-card,.step-card,.compare-card,.review-card,.case-card,.article-card{padding:20px}
    .adv-card h3,.step-card h3,.case-card h3,.article-card h3,.review-card h3{margin:0 0 8px;font-size:18px}
    .adv-card p,.step-card p,.case-card p,.article-card p,.review-card p,.compare-card p{margin:0;color:var(--muted)}
    .icon{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#dcf7e9,#eefbf4);display:grid;place-items:center;color:var(--accent);font-weight:800;margin-bottom:12px}
    .step-grid{grid-template-columns:repeat(4,1fr)}
    .timeline{counter-reset:s;display:grid;gap:14px}
    .timeline li{list-style:none;padding:14px 16px;border-radius:18px;background:#f7fcf9;border:1px solid var(--line);position:relative;padding-left:50px}
    .timeline li::before{counter-increment:s;content:counter(s);position:absolute;left:16px;top:14px;width:24px;height:24px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:800}
    .compare-card{overflow:hidden}
    .table-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f2faf5;color:#204537;font-size:14px}
    td{color:#314c40;font-size:14px}
    .star{color:#d39b16;font-weight:800}
    .highlight{color:var(--accent);font-weight:800}
    .network-grid{grid-template-columns:1fr 1fr}
    .network-list,.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .network-item,.article-item{padding:14px 16px;border-radius:18px;background:#f7fcf9;border:1px solid var(--line)}
    .article-grid,.review-grid{grid-template-columns:repeat(3,1fr)}
    .case-grid{grid-template-columns:repeat(3,1fr)}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}
    .review-role{color:var(--accent);font-weight:700;font-size:13px}
    .price-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .pricing-card{padding:22px}
    .pricing-badge{display:inline-block;padding:8px 12px;border-radius:999px;background:#eefbf4;color:var(--accent);font-size:13px;font-weight:700}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .form-card{padding:22px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:#27493c}
    input,select,textarea{
      width:100%;border:1px solid #cfe3d7;background:#fff;border-radius:14px;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#8acfb0;box-shadow:0 0 0 4px rgba(123,211,169,.18)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;padding:18px 20px;background:none;border:0;text-align:left;font:inherit;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:var(--muted)}
    .faq-item.open .faq-a{padding-bottom:18px;max-height:180px}
    .faq-item.open .chev{transform:rotate(180deg)}
    .chev{transition:.25s ease}
    .footer{margin-top:18px;padding:26px 0 20px;background:#edf8f2;border-top:1px solid rgba(217,234,223,.9);color:#24463a}
    .footer a{color:#1e7b5e}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .mini{color:var(--muted);font-size:14px}
    .links{display:flex;flex-wrap:wrap;gap:10px}
    .links a{padding:8px 10px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{width:52px;height:52px;border-radius:18px;background:linear-gradient(135deg,var(--brand),#55c896);color:#fff;display:grid;place-items:center;box-shadow:0 16px 30px rgba(47,159,120,.22);font-weight:800}
    .to-top{opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s ease}
    .to-top.show{opacity:1;pointer-events:auto;transform:none}
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .mobile-menu{display:none}
    .marquee{display:flex;flex-wrap:wrap;gap:10px}
    .case-chip{padding:8px 12px;border-radius:999px;background:#eefbf4;border:1px solid var(--line);font-size:13px;color:#295144}
    .subtle{color:var(--muted)}
    .home-link{font-weight:800;color:var(--accent)}
    .image-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .ai-page-image{border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow);object-fit:cover;width:100%}
    @media (max-width: 1024px){
      .hero-grid,.about-grid,.price-grid,.network-grid,.footer-grid{grid-template-columns:1fr}
      .services-grid,.adv-grid,.step-grid,.article-grid,.review-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
      .image-row{grid-template-columns:1fr}
    }
    @media (max-width: 768px){
      .nav{display:none}
      .menu-toggle{display:inline-grid;place-items:center}
      .mobile-menu{display:none;padding:0 0 16px}
      .mobile-menu.open{display:block}
      .mobile-menu .nav{display:grid;grid-template-columns:1fr;gap:8px;justify-content:stretch}
      .mobile-menu .nav a{background:#fff;border:1px solid var(--line)}
      .hero-copy,.hero-panel,.section-card,.form-card,.pricing-card{padding:20px}
      .hero-points,.metric-grid,.services-grid,.adv-grid,.step-grid,.article-grid,.review-grid,.case-grid,.network-list,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .nav-wrap{gap:10px}
    }