*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  :root{
    --ink:#0A0A0A; --lime:#A8F82F; --lime-d:#8FD41C;
    --paper:#fff; --soft:#F5F6F3; --line:#E7E8E4;
    --txt:#1A1A1A; --mute:#6E6E6E;
    --r:16px;
    --ff:"MiSans","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  }
  html{scroll-behavior:smooth}
  body{font-family:var(--ff);color:var(--txt);background:var(--paper);line-height:1.65;-webkit-font-smoothing:antialiased}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:1160px;margin:0 auto;padding:0 24px}
  .btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:14px 28px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap}
  .btn-primary{background:var(--lime);color:#0A0A0A}
  .btn-primary:hover{background:var(--lime-d);transform:translateY(-1px)}
  .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
  .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--mute);font-weight:700}
  .eyebrow::before{content:"";width:24px;height:2px;background:var(--lime)}

  /* ---------- header ---------- */
  header{position:sticky;top:0;z-index:50;background:rgba(10,10,10,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:66px}
  .logo{display:flex;align-items:baseline;gap:10px;color:#fff}
  .logo b{font-size:20px;letter-spacing:.02em;font-weight:800}
  .logo b span{color:var(--lime)}
  .logo i{font-style:normal;font-size:13px;color:rgba(255,255,255,.6)}
  .nav-links{display:flex;gap:30px;font-size:14px;color:rgba(255,255,255,.72)}
  .nav-links a:hover{color:var(--lime)}
  .nav .btn{padding:10px 20px;font-size:14px}

  /* ---------- hero ---------- */
  .hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;padding:clamp(64px,9vw,110px) 0 clamp(56px,7vw,88px)}
  .hero::before{content:"";position:absolute;inset:0;background:
     radial-gradient(720px 420px at 78% 18%, rgba(168,248,47,.20), transparent 62%),
     radial-gradient(560px 380px at 12% 88%, rgba(168,248,47,.10), transparent 60%);
     pointer-events:none}
  .hero::after{content:"";position:absolute;inset:0;pointer-events:none;
     background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
     background-size:64px 64px;mask-image:radial-gradient(circle at 50% 40%,#000,transparent 78%)}
  .hero .wrap{position:relative;z-index:2}
  .hero h1{font-size:clamp(30px,4.6vw,54px);line-height:1.16;font-weight:800;letter-spacing:-.02em;max-width:19ch}
  .hero h1 em{font-style:normal;color:var(--lime)}
  .hero p.lead{margin-top:22px;font-size:clamp(15px,1.5vw,17px);color:rgba(255,255,255,.74);max-width:64ch}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
  .hero-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.5)}
  .hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.12);border-radius:14px;overflow:hidden;margin-top:clamp(40px,6vw,64px)}
  .hero-stats div{background:rgba(255,255,255,.03);padding:22px 18px}
  .hero-stats b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--lime);letter-spacing:-.01em}
  .hero-stats span{font-size:12.5px;color:rgba(255,255,255,.6)}

  /* ---------- sections ---------- */
  section{padding:clamp(56px,7.5vw,96px) 0}
  .sec-head{max-width:720px;margin-bottom:clamp(32px,4vw,48px)}
  .sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.015em;margin-top:14px;line-height:1.3;text-wrap:balance}
  .sec-head p{margin-top:14px;color:var(--mute);font-size:15.5px}

  .grid{display:grid;gap:16px}
  .g3{grid-template-columns:repeat(3,1fr)}
  .g4{grid-template-columns:repeat(4,1fr)}
  .card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:.22s}
  .card:hover{border-color:#C9D6B4;box-shadow:0 14px 32px -18px rgba(0,0,0,.28);transform:translateY(-2px)}
  .card h3{font-size:17px;font-weight:800;margin-bottom:8px;letter-spacing:-.01em}
  .card p{font-size:14px;color:var(--mute);line-height:1.7}
  .card .tag{display:inline-block;font-size:11px;font-weight:700;color:#3D6B00;background:#EAFBCF;border-radius:6px;padding:3px 8px;margin-bottom:12px;letter-spacing:.04em}
  .ico{width:40px;height:40px;border-radius:12px;background:var(--lime);display:grid;place-items:center;margin-bottom:16px}
  .ico svg{width:21px;height:21px;stroke:#0A0A0A;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}

  .alt{background:var(--soft)}
  .ind{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  .ind-item{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;transition:.2s}
  .ind-item:hover{border-color:#C9D6B4;box-shadow:0 12px 28px -18px rgba(0,0,0,.3)}
  .ind-item .n{font-size:12px;font-weight:800;color:#9BBE6A;letter-spacing:.08em;min-width:26px;padding-top:3px}
  .ind-item h4{font-size:15.5px;font-weight:800;margin-bottom:5px}
  .ind-item p{font-size:13.5px;color:var(--mute);line-height:1.65}

  .why{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .why div{border-top:3px solid var(--lime);padding-top:18px}
  .why b{display:block;font-size:15.5px;font-weight:800;margin-bottom:8px}
  .why p{font-size:13.5px;color:var(--mute);line-height:1.7}

  .certs{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
  .certs span{font-size:13px;font-weight:600;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 16px;color:#333}

  /* ---------- form ---------- */
  .contact{background:var(--ink);color:#fff}
  .contact .sec-head h2{color:#fff}
  .contact .sec-head p{color:rgba(255,255,255,.62)}
  .contact .eyebrow{color:rgba(255,255,255,.55)}
  .cgrid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
  form{background:#fff;border-radius:18px;padding:clamp(24px,3vw,34px);color:var(--txt)}
  .frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .field{margin-bottom:14px}
  .field label{display:block;font-size:12.5px;font-weight:700;color:#444;margin-bottom:7px;letter-spacing:.02em}
  .field label i{color:#D64500;font-style:normal}
  .field input,.field select,.field textarea{width:100%;font-family:inherit;font-size:14.5px;color:var(--txt);
    border:1px solid #DDDFD9;border-radius:10px;padding:12px 14px;background:#FCFCFA;transition:.18s;outline:none}
  .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--lime);background:#fff;box-shadow:0 0 0 3px rgba(168,248,47,.28)}
  .field textarea{resize:vertical;min-height:96px}
  form .btn-primary{width:100%;justify-content:center;margin-top:6px;padding:15px}
  .hint{font-size:12px;color:#8A8A8A;margin-top:12px;text-align:center}
  .ok{display:none;background:#F0FCE0;border:1px solid #C6E99B;color:#33660A;border-radius:10px;padding:16px 18px;font-size:14px;margin-bottom:18px}
  .ok strong{display:block;font-size:15px;margin-bottom:8px}
  .ok pre{white-space:pre-wrap;font-family:inherit;font-size:13px;line-height:1.8;background:#fff;border:1px solid #DDECC6;border-radius:8px;padding:12px 14px;margin:10px 0;color:#2C4A0E}
  .ok .row{display:flex;gap:10px;flex-wrap:wrap;margin-top:4px}
  .ok .row a,.ok .row button{font-size:13px;padding:9px 16px;width:auto;flex:none}
  .ok .mini{font-size:12px;color:#5C7A38;margin-top:10px;line-height:1.7}

  .cinfo{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:clamp(22px,3vw,30px);display:flex;flex-direction:column}
  .cinfo h3{font-size:16px;font-weight:800;margin-bottom:6px}
  .cinfo .sub{font-size:13px;color:rgba(255,255,255,.55);margin-bottom:22px}
  .crow{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-top:1px solid rgba(255,255,255,.1)}
  .crow:first-of-type{border-top:0}
  .crow .k{font-size:12.5px;color:rgba(255,255,255,.5)}
  .crow .v{font-size:14.5px;font-weight:700;color:#fff;word-break:break-all}
  .copy{background:rgba(255,255,255,.1);border:0;color:rgba(255,255,255,.85);font-size:11.5px;font-weight:700;border-radius:6px;padding:5px 9px;cursor:pointer;font-family:inherit}
  .copy:hover{background:var(--lime);color:#0A0A0A}
  .qr{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);display:flex;gap:16px;align-items:center}
  .qr .box{width:116px;height:116px;border-radius:10px;background:#fff;padding:5px;flex:none;overflow:hidden;box-shadow:0 6px 18px -8px rgba(0,0,0,.6)}
  .qr .box img{width:100%;height:100%;object-fit:contain;display:block;border-radius:5px}
  .qr p{font-size:12.5px;color:rgba(255,255,255,.55);line-height:1.7}

  footer{background:#070707;color:rgba(255,255,255,.42);font-size:13px;padding:34px 0}
  .fnav{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
  .fnav .links{display:flex;gap:22px;flex-wrap:wrap}
  .fnav a:hover{color:var(--lime)}

  .mobile-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(10,10,10,.94);backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.12);padding:10px 16px;gap:10px}
  .mobile-cta a{flex:1;justify-content:center;padding:12px;font-size:14px}

  @media(max-width:960px){
    .g3,.g4,.why{grid-template-columns:repeat(2,1fr)}
    .hero-stats{grid-template-columns:repeat(2,1fr)}
    .cgrid{grid-template-columns:1fr}
    .nav-links{display:none}
  }
  @media(max-width:620px){
    .g3,.g4,.why,.ind{grid-template-columns:1fr}
    .frow{grid-template-columns:1fr}
    .hero-stats{grid-template-columns:repeat(2,1fr)}
    .mobile-cta{display:flex}
    body{padding-bottom:64px}
    .nav .btn{display:none}
  }
  /* ---------- language switch ---------- */
  .nav-right{display:flex;align-items:center;gap:12px}
  .lang{display:flex;gap:2px;border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:3px}
  .lang a{font-size:12.5px;font-weight:700;color:rgba(255,255,255,.62);padding:5px 11px;border-radius:999px;transition:.18s;line-height:1.2}
  .lang a.on{background:var(--lime);color:#0A0A0A}
  .lang a:hover:not(.on){color:#fff}
  @media(max-width:620px){ .nav-right{gap:8px} .lang a{padding:4px 9px;font-size:12px} }

  /* ---------- 内容页（长尾落地页） ---------- */
  .article{padding:clamp(40px,5vw,64px) 0}
  .article .wrap{max-width:820px}
  .article h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;letter-spacing:-.01em;margin:44px 0 14px;padding-top:8px}
  .article h2:first-child{margin-top:0}
  .article p{font-size:15.5px;color:#3A3A3A;line-height:1.9;margin:12px 0}
  .article ul,.article ol{margin:12px 0 12px 22px}
  .article li{font-size:15.5px;color:#3A3A3A;line-height:1.9;margin:7px 0}
  .article b{color:#0A0A0A;font-weight:700}
  .article table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
  .article th{background:#0A0A0A;color:#fff;text-align:left;padding:11px 14px;font-weight:700;font-size:13.5px}
  .article td{border-bottom:1px solid #E7E8E4;padding:11px 14px;color:#3A3A3A;line-height:1.7}
  .article tr:nth-child(even) td{background:#FAFAF8}
  .hero-sm{padding:clamp(44px,6vw,72px) 0}
  .hero-sm h1{font-size:clamp(26px,3.6vw,42px);max-width:24ch}
  .hero-sm .lead{margin-top:18px;max-width:64ch}
  .rel{background:#F5F6F3;padding:clamp(36px,4vw,52px) 0}
  .rel .grid{grid-template-columns:repeat(3,1fr)}
  .rel a{display:block;background:#fff;border:1px solid #E7E8E4;border-radius:14px;padding:20px;transition:.2s}
  .rel a:hover{border-color:#C9D6B4;box-shadow:0 12px 28px -18px rgba(0,0,0,.3);transform:translateY(-2px)}
  .rel h4{font-size:15px;font-weight:800;margin-bottom:6px}
  .rel p{font-size:13px;color:#6E6E6E;line-height:1.6}
  .faq{margin-top:44px}
  .faq details{border-bottom:1px solid #E7E8E4;padding:16px 0}
  .faq summary{font-size:15.5px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";color:#8FD41C;font-weight:800;font-size:20px;line-height:1}
  .faq details[open] summary::after{content:"−"}
  .faq p{font-size:14.5px;color:#5A5A5A;line-height:1.85;margin-top:10px}