:root{
      --bg:#f5fbf7;
      --bg2:#eef7f0;
      --card:#ffffff;
      --text:#173126;
      --muted:#5f7568;
      --line:#dbe9df;
      --primary:#2fb77b;
      --primary2:#1f9a68;
      --accent:#dff6ea;
      --shadow:0 18px 40px rgba(28,74,51,.08);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,var(--bg) 0%,#fff 36%,var(--bg2) 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(245,251,247,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(219,233,223,.85)}
    .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 img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:6px;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);margin-top:3px}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);padding:10px 12px;border-radius:12px}
    nav ul{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
    nav a{display:inline-flex;align-items:center;justify-content:center;padding:9px 12px;border-radius:999px;color:var(--muted);font-size:14px}
    nav a:hover,nav a:focus-visible{background:var(--accent);color:var(--text)}
    .home-link{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff!important;box-shadow:0 10px 22px rgba(47,183,123,.22)}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-main{position:relative;overflow:hidden;padding:34px;background:linear-gradient(135deg,#ffffff 0%,#f4fbf6 100%);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}
    .hero-main::before,.hero-main::after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(47,183,123,.18),transparent 68%)}
    .hero-main::before{width:240px;height:240px;right:-85px;top:-80px}
    .hero-main::after{width:180px;height:180px;left:-60px;bottom:-80px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:#ecf9f1;border:1px solid #d3efdf;border-radius:999px;color:var(--primary2);font-size:13px;font-weight:700}
    h1{font-size:clamp(32px,5vw,54px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.9;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;padding:13px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 26px rgba(47,183,123,.23)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-side{display:grid;gap:14px}
    .mini-card{padding:20px;background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
    .mini-card h3{margin:0 0 8px;font-size:18px}
    .mini-card p,.mini-card li{color:var(--muted);line-height:1.8}
    .stats{padding:18px 0 6px}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .stat{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)}
    .stat strong{display:block;font-size:28px;color:var(--primary2);margin-bottom:6px}
    .stat span{color:var(--muted);font-size:14px;line-height:1.6}
    main section{padding:24px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:66ch;line-height:1.8}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 22px 44px rgba(28,74,51,.12)}
    .card h3{margin:0 0 10px;font-size:19px}
    .card p{margin:0;color:var(--muted);line-height:1.85}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#f3fbf6;border:1px solid var(--line);color:var(--text);font-size:13px}
    .timeline{display:grid;gap:14px}
    .step{display:grid;grid-template-columns:86px 1fr;gap:16px;align-items:start;padding:18px 0;border-bottom:1px dashed var(--line)}
    .step:last-child{border-bottom:none}
    .num{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,#dff6ea,#eefaf2);display:grid;place-items:center;color:var(--primary2);font-weight:800;font-size:20px}
    .table-wrap{overflow:auto;border-radius:24px;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:16px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f5fbf7;color:var(--text);font-size:14px}
    td{color:var(--muted);line-height:1.7}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#f2b01e;font-size:18px;letter-spacing:2px}
    .accordion{display:grid;gap:12px}
    .faq-item{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
    .faq-q{width:100%;text-align:left;background:none;border:0;padding:18px 20px;font-size:16px;font-weight:700;color:var(--text);display:flex;justify-content:space-between;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
    .faq-a p{margin:0;padding:0 20px 18px;color:var(--muted);line-height:1.85}
    .faq-item.active .faq-a{max-height:180px}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:transform .25s ease}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review small{color:var(--primary2);font-weight:700}
    .review .who{margin-top:14px;color:var(--text);font-weight:700}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .article{padding:18px 20px}
    .article a{display:block;font-weight:700;color:var(--text);margin-bottom:8px}
    .article p{font-size:14px}
    form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:grid;gap:8px;font-weight:700;color:var(--text);font-size:14px}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none;transition:border-color .2s ease,box-shadow .2s ease}
    input:focus,select:focus,textarea:focus{border-color:rgba(47,183,123,.55);box-shadow:0 0 0 4px rgba(47,183,123,.12)}
    textarea{min-height:120px;resize:vertical}
    footer{margin-top:18px;background:#173126;color:#e7f5ec;border-top:1px solid rgba(255,255,255,.08)}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;padding:28px 0}
    .footer-grid a{color:#dff6ea}
    .footer-grid p,.footer-grid li{color:#c6ddd1;line-height:1.8}
    .footer-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
    .copyright{padding:14px 0 22px;border-top:1px solid rgba(255,255,255,.08);color:#c6ddd1;font-size:13px}
    .float-box{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border-radius:999px;padding:12px 16px;box-shadow:0 14px 30px rgba(47,183,123,.28);font-weight:700}
    .float-btn.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .kefu{display:grid;gap:8px;align-items:center;justify-items:center}
    .kefu img{width:160px;height:auto;border-radius:16px;border:1px solid var(--line);background:#fff;padding:8px}
    .fade{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
    .fade.in{opacity:1;transform:none}
    .side-note{display:grid;gap:12px}
    .inline-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:0;padding:0;list-style:none}
    .inline-list li{padding:11px 12px;background:#f5fbf7;border:1px solid var(--line);border-radius:14px;color:var(--muted);font-size:14px}
    .compare-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#ecf9f1;color:var(--primary2);font-weight:700}
    .anchor-space{scroll-margin-top:92px}
    @media (max-width: 960px){
      .hero-grid,.grid-3,.grid-2,.reviews,.article-list,.footer-grid,.stats-grid{grid-template-columns:1fr 1fr}
      .hero-grid{grid-template-columns:1fr}
    }
    @media (max-width: 720px){
      .menu-btn{display:inline-flex}
      nav{display:none}
      nav.open{display:block;width:100%}
      .nav{flex-wrap:wrap}
      nav ul{padding:10px 0 4px;justify-content:flex-start}
      .hero{padding-top:22px}
      .hero-main{padding:24px}
      .stats-grid,.grid-3,.grid-2,.reviews,.article-list,.footer-grid,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .step{grid-template-columns:1fr}
      .inline-list{grid-template-columns:1fr}
      .float-box{right:12px;bottom:12px}
    }