:root{
    --green:#22c55e;
    --green-deep:#15803d;
    --green-soft:#e8f9ee;
    --ink:#12211a;
    --ink-soft:#42554a;
    --line:#dcefe1;
    --bg:#f5fbf6;
    --card:#ffffff;
    --shadow:0 12px 32px rgba(21,128,61,.10);
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    color:var(--ink);
    background:
      radial-gradient(1200px 500px at 8% -8%, #d9f7e3 0%, rgba(217,247,227,0) 60%),
      radial-gradient(900px 460px at 100% 0%, #eefcf1 0%, rgba(238,252,241,0) 55%),
      var(--bg);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;height:auto;display:block}
  h1,h2,h3,h4{line-height:1.3;color:var(--ink);letter-spacing:.2px}
  h2{font-size:clamp(22px,3vw,30px)}
  h3{font-size:18px}
  p{color:var(--ink-soft)}
  section{padding:66px 0}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--green-deep);background:var(--green-soft);border:1px solid var(--line);padding:6px 14px;border-radius:999px;letter-spacing:1px}
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green)}
  .sec-head{max-width:760px;margin-bottom:34px}
  .sec-head h2{margin:14px 0 10px}
  .sec-head p{font-size:15px}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:999px;font-weight:700;font-size:15px;border:1.5px solid transparent;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease}
  .btn-primary{background:linear-gradient(120deg,#22c55e,#159f4b);color:#fff;box-shadow:0 10px 24px rgba(34,197,94,.32)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(34,197,94,.4)}
  .btn-ghost{background:#fff;color:var(--green-deep);border-color:var(--line)}
  .btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--green)}
  .btn:active{transform:scale(.97)}

  /* nav */
  header.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand img{width:132px;max-width:100%;height:auto}
  .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
  .nav-links a{font-size:14px;font-weight:600;color:#2c4034;padding:8px 11px;border-radius:8px;transition:color .2s ease,background .2s ease}
  .nav-links a:hover{color:var(--green-deep);background:var(--green-soft)}
  .nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .nav-cta .btn{padding:9px 18px;font-size:14px}
  .nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
  .nav-toggle span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  /* hero */
  .hero{padding:70px 0 60px;position:relative;overflow:hidden}
  .hero::after{content:"";position:absolute;right:-160px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,#bbf7d0 0%,rgba(187,247,208,0) 70%);z-index:0}
  .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
  .hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.22;margin:18px 0 16px;font-weight:800}
  .hero h1 .hl{color:var(--green-deep);position:relative}
  .hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:10px;background:rgba(34,197,94,.22);border-radius:6px;z-index:-1}
  .hero-lead{font-size:16px;max-width:560px;margin-bottom:26px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px}
  .hero-tags span{font-size:13px;font-weight:600;color:var(--green-deep);background:#fff;border:1px solid var(--line);padding:6px 13px;border-radius:999px;box-shadow:0 4px 12px rgba(21,128,61,.05)}
  .hero-panel{background:linear-gradient(160deg,#ffffff 0%,#f0fdf3 100%);border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:var(--shadow);animation:floatUp .8s ease both}
  .hero-panel h3{font-size:16px;margin-bottom:16px}
  .metric-row{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line)}
  .metric-row:last-child{border-bottom:none}
  .metric-row .k{font-size:14px;color:var(--ink-soft);font-weight:600}
  .metric-row .v{font-size:15px;font-weight:800;color:var(--green-deep)}
  .hero-mini-note{margin-top:16px;font-size:12.5px;color:var(--ink-soft);background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px}

  /* stats strip */
  .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:6px}
  .stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;text-align:center;box-shadow:0 8px 20px rgba(21,128,61,.06);transition:transform .3s ease,box-shadow .3s ease}
  .stat:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .stat b{display:block;font-size:24px;color:var(--green-deep);margin-bottom:4px}
  .stat span{font-size:13px;color:var(--ink-soft)}

  /* cards */
  .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
  .card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 8px 22px rgba(21,128,61,.06);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
  .card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--green)}
  .card .ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--green-soft);color:var(--green-deep);font-weight:800;margin-bottom:14px;font-size:16px}
  .card h3{margin-bottom:8px}
  .card p{font-size:14px}

  /* about */
  .about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start}
  .about-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}
  .about-list li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14px;font-weight:600;color:#2c4034;display:flex;gap:8px;align-items:flex-start}
  .about-list li::before{content:"✓";color:var(--green);font-weight:800}
  .quote-box{background:linear-gradient(150deg,#15803d,#22c55e);color:#fff;border-radius:20px;padding:30px;box-shadow:0 18px 38px rgba(21,128,61,.28)}
  .quote-box h3{color:#fff;font-size:20px;margin-bottom:12px}
  .quote-box p{color:rgba(255,255,255,.92);font-size:14.5px}
  .quote-box .badge-line{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
  .quote-box .badge-line span{font-size:12.5px;font-weight:700;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3);padding:5px 12px;border-radius:999px;color:#fff}

  /* steps */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
  .step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;position:relative;box-shadow:0 8px 20px rgba(21,128,61,.06);transition:transform .3s ease,box-shadow .3s ease}
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .step .num{width:34px;height:34px;border-radius:50%;background:var(--green-soft);color:var(--green-deep);font-weight:800;display:flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:14px}
  .step h3{font-size:16px;margin-bottom:6px}
  .step p{font-size:13.5px}

  /* table compare */
  .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 10px 26px rgba(21,128,61,.07)}
  table{width:100%;border-collapse:collapse;min-width:640px}
  th,td{padding:15px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
  th{background:#eefaf1;color:var(--green-deep);font-weight:800;font-size:13.5px;letter-spacing:.5px;white-space:nowrap}
  td:first-child{font-weight:700;color:var(--ink)}
  tbody tr{transition:background .2s ease}
  tbody tr:hover{background:#f6fdf8}
  tbody tr:last-child td{border-bottom:none}
  .rate-badge{display:inline-flex;align-items:center;gap:6px;background:var(--green-soft);color:var(--green-deep);font-weight:800;border-radius:999px;padding:5px 14px;font-size:13px}

  /* cases */
  .case-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:stretch}
  .case-main{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 10px 26px rgba(21,128,61,.08)}
  .case-main .figure{background:#f2fbf5;padding:14px}
  .case-main .figure img{border-radius:12px;width:100%}
  .case-main .body{padding:20px}
  .case-side{display:grid;gap:20px}
  .case-side .mini{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 8px 20px rgba(21,128,61,.06);display:flex;gap:14px;align-items:center}
  .case-side .mini .thumb{width:84px;min-width:84px;border-radius:12px;overflow:hidden;background:#f2fbf5}
  .case-side .mini h3{font-size:15px;margin-bottom:4px}
  .case-side .mini p{font-size:13px}
  .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--green-deep);background:var(--green-soft);border-radius:999px;padding:3px 10px;margin-bottom:8px}

  /* reviews */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .review{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 8px 20px rgba(21,128,61,.06);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column;gap:10px}
  .review:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .review .head{display:flex;align-items:center;gap:10px}
  .review .avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#22c55e,#15803d);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex-shrink:0}
  .review .who{font-weight:800;font-size:14px}
  .review .role{font-size:12.5px;color:var(--ink-soft)}
  .review p{font-size:13.8px}
  .stars{color:#f59e0b;font-size:13px;letter-spacing:2px}

  /* form */
  .form-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;align-items:start}
  .form-side{background:linear-gradient(155deg,#f0fdf3,#ffffff);border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 10px 26px rgba(21,128,61,.07)}
  .form-side h3{margin-bottom:10px}
  .form-side p{font-size:14px;margin-bottom:16px}
  .contact-line{display:flex;gap:10px;font-size:14px;padding:9px 0;border-bottom:1px dashed var(--line);color:#2c4034}
  .contact-line:last-child{border-bottom:none}
  .contact-line b{color:var(--green-deep);min-width:74px;font-weight:700}
  .qr-box{margin-top:16px;display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px}
  .qr-box img{width:92px;height:92px;object-fit:contain;border-radius:8px;border:1px solid var(--line)}
  .qr-box span{font-size:13px;color:var(--ink-soft);font-weight:600}
  form.req-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:6px;color:#2c4034}
  .field input,.field select,.field textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:12px;font-size:14px;font-family:inherit;color:var(--ink);background:#fbfefc;transition:border-color .2s ease,box-shadow .2s ease}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(34,197,94,.16);background:#fff}
  .field textarea{min-height:110px;resize:vertical}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  form.req-form .btn{width:100%;margin-top:4px}
  .form-tip{font-size:12.5px;color:var(--ink-soft);margin-top:10px;text-align:center}

  /* faq */
  .faq-list{display:grid;gap:12px}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease}
  .faq-item.open{border-color:var(--green);box-shadow:0 10px 24px rgba(21,128,61,.1)}
  .faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:18px 20px;font-size:15px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px;font-family:inherit}
  .faq-q .plus{color:var(--green-deep);font-size:20px;font-weight:800;transition:transform .3s ease;line-height:1}
  .faq-item.open .plus{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
  .faq-a p{padding:0 20px 18px;font-size:14px}

  /* articles & links */
  .art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .art{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 8px 20px rgba(21,128,61,.05);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column;gap:8px}
  .art:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .art h3{font-size:15.5px}
  .art p{font-size:13.5px}
  .art .more{font-size:13px;font-weight:700;color:var(--green-deep);margin-top:auto}
  .link-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .link-cloud a{font-size:13px;font-weight:600;color:#2c4034;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;transition:.25s}
  .link-cloud a:hover{color:#fff;background:var(--green-deep);border-color:var(--green-deep);transform:translateY(-2px)}
  .tokens{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .token-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 8px 20px rgba(21,128,61,.06)}
  .token-card .label{font-size:13px;color:var(--ink-soft);font-weight:600}
  .token-card .price{font-size:22px;font-weight:800;color:var(--green-deep);margin:6px 0 4px}
  .token-card .desc{font-size:13px;color:var(--ink-soft)}

  /* network */
  .network{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .net{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center;font-size:14px;font-weight:700;color:#2c4034;box-shadow:0 6px 16px rgba(21,128,61,.05);transition:transform .3s ease,box-shadow .3s ease}
  .net:hover{transform:translateY(-4px);box-shadow:var(--shadow);color:var(--green-deep)}
  .net small{display:block;font-weight:500;font-size:12.5px;color:var(--ink-soft);margin-top:4px}

  /* footer */
  footer.site-footer{background:#0f2a1b;color:#d8ecdd;padding:52px 0 24px;margin-top:20px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px;align-items:start}
  footer h4{color:#fff;font-size:15px;margin-bottom:14px}
  footer p,footer li,footer a{color:#c3dccb;font-size:13.5px}
  footer ul{list-style:none;display:grid;gap:8px}
  footer a:hover{color:#7ef0a3}
  .footer-brand{display:flex;flex-direction:column;gap:12px}
  .footer-brand img{width:140px}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#a7c6b3}

  /* float */
  .float-box{position:fixed;right:20px;bottom:24px;z-index:80;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
  .float-card{position:absolute;right:0;bottom:64px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:0 16px 34px rgba(21,128,61,.2);width:210px;display:none;text-align:center}
  .float-card.show{display:block;animation:floatUp .3s ease both}
  .float-card img{width:100%;max-width:170px;margin:0 auto 8px;border-radius:10px}
  .float-card span{font-size:12.5px;color:var(--ink-soft);font-weight:600}
  .float-btn{width:52px;height:52px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:800;box-shadow:0 10px 24px rgba(21,128,61,.34);transition:transform .25s ease,opacity .25s ease}
  .float-btn:hover{transform:translateY(-3px) scale(1.04)}
  .float-kf{background:linear-gradient(135deg,#22c55e,#15803d)}
  .float-top{background:#2c4034;opacity:0;pointer-events:none}
  .float-top.show{opacity:1;pointer-events:auto}

  /* reveal */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
  .reveal.visible{opacity:1;transform:none}
  @keyframes floatUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

  /* responsive */
  @media (max-width:1024px){
    .hero-grid,.about-grid,.form-wrap,.case-grid{grid-template-columns:1fr}
    .card-grid,.review-grid,.art-grid,.tokens{grid-template-columns:repeat(2,1fr)}
    .steps,.network{grid-template-columns:repeat(2,1fr)}
    .stats{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:860px){
    .nav-links{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px;box-shadow:0 16px 30px rgba(21,128,61,.12);grid-template-columns:1fr 1fr;gap:4px}
    .nav-links.open{display:grid}
    .nav-links a{padding:11px 12px;border-radius:10px}
    .nav-toggle{display:flex}
    .nav-cta .btn-ghost{display:none}
  }
  @media (max-width:640px){
    section{padding:46px 0}
    .card-grid,.review-grid,.art-grid,.tokens,.steps,.network,.stats,.footer-grid,.form-row{grid-template-columns:1fr}
    .hero{padding:44px 0 40px}
    .hero-actions .btn{flex:1 1 auto}
    .float-box{right:14px;bottom:16px}
  }