:root{
      --bg:#f4fbf6;
      --bg2:#eef8f1;
      --card:#ffffff;
      --text:#143126;
      --muted:#5b7266;
      --line:#d7e9dd;
      --brand:#2f8f6a;
      --brand2:#67c48b;
      --brand3:#1f6f54;
      --accent:#e9fff1;
      --shadow:0 14px 40px rgba(28,72,50,.10);
      --radius:22px;
      --radius-sm:16px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(103,196,139,.14), transparent 30%),
        radial-gradient(circle at top right, rgba(47,143,106,.12), transparent 24%),
        linear-gradient(180deg, var(--bg), #fff 54%, var(--bg2));
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    header{position:sticky;top:0;z-index:50;background:rgba(244,251,246,.82);backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid rgba(215,233,221,.9)}
    .topbar{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:1.04rem;line-height:1.1}
    .brand span{display:block;font-size:.82rem;color:var(--muted);margin-top:3px}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:.95rem;color:#264739;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav a:hover,.nav a.active{background:var(--accent);color:var(--brand3)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;color:var(--text)}
    .hero{padding:30px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-aside,.panel,.card,.faq-item,.quote,.table-wrap,.form-box,.article-list,.timeline,.price-box,.support-box,.network-box,.compare-box{background:rgba(255,255,255,.88);border:1px solid rgba(215,233,221,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-copy{padding:30px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:var(--accent);color:var(--brand3);font-weight:700;font-size:.9rem}
    h1{margin:16px 0 12px;font-size:clamp(2rem,4vw,3.55rem);line-height:1.06;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:1.06rem;line-height:1.8;max-width:56ch}
    .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:12px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.22s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 10px 22px rgba(47,143,106,.22)}
    .btn-secondary{background:#fff;color:var(--brand3);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 14px 22px rgba(20,49,38,.10)}
    .mini-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fbfffc,#f2fbf4);border:1px solid var(--line)}
    .stat b{display:block;font-size:1.4rem}
    .stat span{display:block;margin-top:5px;color:var(--muted);font-size:.9rem;line-height:1.4}
    .hero-aside{padding:22px;display:grid;gap:14px}
    .aside-title{display:flex;align-items:center;justify-content:space-between;gap:10px}
    .aside-title h2{margin:0;font-size:1.05rem}
    .badge{font-size:.78rem;padding:6px 10px;border-radius:999px;background:#ecfff2;color:var(--brand3);border:1px solid var(--line)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#27483a;font-size:.88rem}
    .keyline{padding:14px 16px;border-radius:18px;background:linear-gradient(180deg, #f9fffb, #eefaf2);border:1px solid var(--line);line-height:1.75;color:#355246}
    main{padding:8px 0 0}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:1.55rem}
    .section-head p{margin:0;color:var(--muted);line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{padding:18px}
    .card h3{margin:10px 0 8px;font-size:1.02rem}
    .card p,.card li{color:var(--muted);line-height:1.7}
    .icon{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#def7e7,#fff);display:grid;place-items:center;color:var(--brand3);font-weight:800;border:1px solid var(--line)}
    .list{margin:0;padding-left:18px}
    .columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .panel{padding:20px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:18px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f5fbf7)}
    .step em{display:inline-block;font-style:normal;padding:5px 10px;border-radius:999px;background:#edfdf1;color:var(--brand3);font-weight:700;margin-bottom:10px}
    .table-wrap{padding:8px;overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:860px;background:#fff;border-radius:18px;overflow:hidden}
    th,td{padding:14px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#f5fbf7;color:#28483a;font-size:.95rem}
    td{color:var(--muted);line-height:1.7}
    .rating{display:flex;align-items:center;gap:8px;color:#c58b00;font-weight:800}
    .stars{letter-spacing:2px}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 18px;background:#fff;border:0;color:var(--text);font-size:1rem;font-weight:700;text-align:left;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease;border-top:1px solid transparent}
    .faq-item.open .faq-a{max-height:220px;padding:0 18px 18px;border-top-color:var(--line)}
    .faq-a p{margin:14px 0 0;color:var(--muted);line-height:1.8}
    .quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{padding:18px}
    .quote .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .quote strong{font-size:1rem}
    .quote small{color:var(--muted)}
    .quote p{margin:10px 0 0;color:var(--muted);line-height:1.75}
    .article-list{padding:18px}
    .article-list ul{margin:0;padding:0;list-style:none;display:grid;gap:12px}
    .article-list li{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line)}
    .article-list li:last-child{border-bottom:0}
    .article-list a{color:var(--brand3);font-weight:700}
    .article-list span{color:var(--muted);font-size:.92rem}
    .form-box{padding:20px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-weight:700;color:#294639;font-size:.95rem}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(47,143,106,.55);box-shadow:0 0 0 4px rgba(103,196,139,.12)}
    .submit-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:14px}
    .footer-cta{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .support-box,.network-box,.price-box,.timeline,.compare-box{padding:18px}
    .timeline{display:grid;gap:14px}
    .time-item{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start}
    .dot{width:12px;height:12px;margin-top:6px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 0 0 5px rgba(103,196,139,.12)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{border:0;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-radius:999px;padding:12px 14px;font-weight:700;box-shadow:0 10px 24px rgba(47,143,106,.24);cursor:pointer}
    .backtop{display:none}
    footer{margin-top:8px;padding:18px 0 26px;border-top:1px solid var(--line);background:rgba(255,255,255,.62);color:#294639}
    .footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;align-items:start}
    .footer-grid h3{margin:0 0 10px;font-size:1rem}
    .footer-grid p,.footer-grid a,.footer-grid li{color:#456255;line-height:1.8}
    .links{display:flex;flex-wrap:wrap;gap:10px}
    .links a{padding:8px 10px;border-radius:999px;border:1px solid var(--line);background:#fff}
    .muted{color:var(--muted)}
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .hr{height:1px;background:var(--line);margin:14px 0}
    .media-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .media-grid img{border-radius:18px;border:1px solid var(--line);background:#fff}
    .caption{font-size:.9rem;color:var(--muted);margin-top:8px;line-height:1.6}
    .menu-panel{display:none}
    .home-link{font-weight:800}
    @media (max-width: 960px){
      .hero-grid,.columns,.footer-cta,.footer-grid,.grid-4,.grid-3,.quotes,.steps,.media-grid{grid-template-columns:1fr 1fr}
      .hero-grid,.footer-cta,.footer-grid,.columns{grid-template-columns:1fr}
      .menu-btn{display:inline-flex}
      .nav{display:none}
      .nav.open{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:0 0 14px}
      .topbar{align-items:flex-start;flex-wrap:wrap}
      .hero-copy{padding:24px}
    }
    @media (max-width: 640px){
      .container{padding:0 14px}
      .mini-stats,.grid-3,.grid-4,.quotes,.steps,.form-grid,.media-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      h1{font-size:2rem}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
      .floating{right:12px;bottom:12px}
      .floating a,.floating button{padding:11px 13px}
      .faq-q{padding:16px}
    }