:root{--bg:#f6fbf8;--bg2:#eff8f4;--card:#ffffff;--line:#dbe9e2;--text:#183128;--muted:#5f7269;--brand:#2ea97b;--brand2:#6fd6a8;--accent:#1d7f61;--shadow:0 14px 40px rgba(28,72,53,.08);--radius:22px;--radius2:16px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,var(--bg) 0%,#fff 35%,var(--bg2) 100%);color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}img{display:block;max-width:100%}
    .container{width:min(1180px,calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(246,251,248,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,233,226,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;justify-content:flex-end}
    .menu a{font-size:14px;color:var(--text);padding:8px 11px;border-radius:999px;transition:.2s}
    .menu a:hover,.menu a.active{background:#e7f6ef;color:#116849}
    .nav-actions{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:.22s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#34c28c);color:#fff;box-shadow:0 12px 24px rgba(46,169,123,.18)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:#fff}
    .burger span{display:block;width:18px;height:2px;background:var(--text);margin:0 auto;position:relative}
    .burger span:before,.burger span:after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
    .burger span:before{top:-6px}.burger span:after{top:6px}
    .hero{padding:42px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-card{background:linear-gradient(135deg,#f8fffb 0%,#eefaf5 100%);border:1px solid var(--line);border-radius:28px;padding:34px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:50%;background:rgba(46,169,123,.12);filter:blur(2px)}
    .hero-card:before{width:160px;height:160px;right:-40px;top:-30px}.hero-card:after{width:220px;height:220px;left:-80px;bottom:-120px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#116849;background:#e8f8f0;padding:8px 12px;border-radius:999px;margin-bottom:16px}
    h1{margin:0 0 14px;font-size:clamp(30px,4vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0 0 22px;color:var(--muted);font-size:16px;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .point{background:rgba(255,255,255,.78);border:1px solid rgba(219,233,226,.9);border-radius:18px;padding:14px}
    .point strong{display:block;font-size:20px;margin-bottom:4px;color:#0f5f46}
    .point span{color:var(--muted);font-size:13px}
    .hero-aside{display:grid;gap:14px}
    .stack{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}
    .stack h3{margin:0 0 10px;font-size:18px}
    .tagcloud{display:flex;flex-wrap:wrap;gap:10px}
    .tagcloud span{padding:8px 10px;border-radius:999px;background:#f2faf6;color:#1e6a50;border:1px solid #dcefe5;font-size:13px}
    section{padding:18px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-title h2{margin:0;font-size:28px;line-height:1.15}
    .section-title p{margin:0;color:var(--muted);max-width:62ch}
    .grid-3,.grid-4{display:grid;gap:16px}
    .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
    .card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 8px 24px rgba(26,60,47,.05);transition:.22s}
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px;font-size:18px}.card p,.card li{color:var(--muted)}
    .metric{font-size:30px;font-weight:800;color:var(--accent);line-height:1}
    .metric-label{margin-top:8px;font-size:14px;color:var(--muted)}
    .feature-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
    .feature-list li{display:flex;gap:10px;align-items:flex-start}.check{width:20px;height:20px;border-radius:50%;background:#e7f6ef;flex:0 0 20px;position:relative;margin-top:2px}
    .check:before{content:"";position:absolute;left:6px;top:4px;width:6px;height:10px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(40deg)}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}
    .step b{display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;background:#e8f8f0;color:#116849;margin-bottom:10px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:840px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf3ef;text-align:left;vertical-align:top}
    th{background:#f4fbf7;color:#104f3a;font-size:14px}
    td{color:var(--muted);font-size:14px}
    .badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:#e8f8f0;color:#116849;font-size:12px;font-weight:700}
    .review{display:grid;gap:10px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .stars{color:#f3b63f;letter-spacing:2px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:0 8px 20px rgba(26,60,47,.04)}
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:12px 0 0;color:var(--muted)}
    .article-list,.link-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .article-item,.link-item{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:16px 18px;border-radius:18px;border:1px solid var(--line);background:#fff}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none}
    textarea{min-height:128px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(46,169,123,.12)}
    .full{grid-column:1/-1}
    .footer{margin-top:18px;padding:24px 0 30px;background:#eef8f2;border-top:1px solid #d9eadf;color:#214438}
    .footer a{color:#175f46}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr 1fr;gap:16px;align-items:start}
    .mini{font-size:13px;color:var(--muted)}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:52px;height:52px;border-radius:18px;border:none;display:grid;place-items:center;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line);cursor:pointer}
    .floating svg{width:22px;height:22px;fill:#1a6d51}
    .mobile-panel{display:none}
    .fade{opacity:0;transform:translateY(18px);transition:.55s ease}
    .fade.in{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.timeline,.split,.footer-grid,.article-list,.link-grid{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .menu{display:none}.burger{display:inline-grid;place-items:center}
      .mobile-panel{display:none;padding:0 0 14px}.mobile-panel.open{display:block}
      .mobile-panel .menu{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));padding:12px 0 0}
      .nav{flex-wrap:wrap}
      .nav-actions{margin-left:auto}
    }