:root{
  --green:#3DBE29;
  --green-dark:#2E9A1F;
  --ink:#111418;
  --ink-2:#3d4450;
  --ink-3:#6b7480;
  --line:#e6e9ee;
  --bg:#ffffff;
  --bg-soft:#f6f8fa;
  --radius:14px;
  --max:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:40px;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:40px;width:40px;object-fit:contain}
.brand .txt strong{display:block;font-size:17px;letter-spacing:.5px;line-height:1.25}
.brand .txt span{display:block;font-size:11px;color:var(--ink-3);letter-spacing:3px}
.menu{display:flex;gap:30px;margin-left:auto;font-size:15px;color:var(--ink-2)}
.menu a{padding:6px 0;border-bottom:2px solid transparent;transition:.2s}
.menu a:hover{color:var(--green);border-color:var(--green)}
.nav-cta{
  padding:9px 20px;border-radius:999px;background:var(--green);color:#fff;
  font-size:14px;font-weight:600;transition:.2s;white-space:nowrap;
}
.nav-cta:hover{background:var(--green-dark)}
.burger{display:none;margin-left:auto;font-size:24px;background:none;border:0;cursor:pointer;color:var(--ink)}

/* ---------- hero ---------- */
.hero{padding:96px 0 88px;background:
  radial-gradient(900px 420px at 88% -10%,rgba(61,190,41,.14),transparent 62%),
  linear-gradient(180deg,#fbfdfb 0%,#ffffff 100%);
  border-bottom:1px solid var(--line);}
.hero .grid{display:block;max-width:820px}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(61,190,41,.1);color:var(--green-dark);font-size:13px;font-weight:600;
  border:1px solid rgba(61,190,41,.25);
}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--green);display:block}
h1{font-size:44px;line-height:1.25;margin:20px 0 8px;letter-spacing:-.5px}
h1 em{font-style:normal;color:var(--green)}
.sub{font-size:18px;color:var(--ink-3);margin-bottom:28px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{padding:13px 28px;border-radius:10px;font-size:15px;font-weight:600;transition:.2s;border:1px solid transparent}
.btn-p{background:var(--green);color:#fff}
.btn-p:hover{background:var(--green-dark);transform:translateY(-1px)}
.btn-o{border-color:var(--line);color:var(--ink-2);background:#fff}
.btn-o:hover{border-color:var(--green);color:var(--green)}
.hero-stats{display:flex;gap:40px;margin-top:48px;padding-top:32px;border-top:1px dashed var(--line)}
.hero-stats .n{font-size:26px;font-weight:700;letter-spacing:-.5px}
.hero-stats .n small{font-size:13px;font-weight:600;color:var(--ink-3);margin-left:2px}
.hero-stats .l{font-size:13px;color:var(--ink-3)}

/* ---------- section ---------- */
section{padding:84px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 48px}
.tag{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--green)}
.sec-head h2{font-size:32px;margin:10px 0 12px;letter-spacing:-.5px}
.sec-head p{color:var(--ink-3);font-size:16px}
.alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  transition:.25s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);border-color:rgba(61,190,41,.45);box-shadow:0 20px 40px -26px rgba(20,40,20,.3)}
.ico{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(61,190,41,.1);margin-bottom:18px;
}
.ico svg{width:24px;height:24px;stroke:var(--green-dark);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:18px;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--ink-3)}

/* ---------- building ---------- */
.build{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:44px 26px;border:1px dashed rgba(61,190,41,.5);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(61,190,41,.05),rgba(61,190,41,.01));text-align:center;
}
.build .bar{width:46px;height:4px;border-radius:4px;background:rgba(61,190,41,.2);overflow:hidden;margin-bottom:20px}
.build .bar i{display:block;width:40%;height:100%;background:var(--green);animation:slide 1.6s ease-in-out infinite}
@keyframes slide{0%{transform:translateX(-110%)}100%{transform:translateX(260%)}}
.build h3{font-size:19px;margin-bottom:8px}
.build p{font-size:14.5px;color:var(--ink-3);max-width:420px}
.chip{
  margin-top:16px;font-size:12.5px;font-weight:600;color:var(--green-dark);
  background:rgba(61,190,41,.12);border:1px solid rgba(61,190,41,.25);padding:4px 12px;border-radius:999px;
}

/* ---------- about ---------- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about p{color:var(--ink-2);margin-bottom:16px}
.kv{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
.kv div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.kv .k{font-size:12.5px;color:var(--ink-3)}
.kv .v{font-weight:600;font-size:15px;word-break:break-all}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.cbox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.cbox h3{font-size:17px;margin-bottom:18px}
.cline{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.cline:last-child{border:0}
.cline .lab{color:var(--ink-3);min-width:88px;flex-shrink:0}
.cline .val{font-weight:600;word-break:break-all}
.mapbox{
  border-radius:var(--radius);border:1px solid var(--line);background:
  repeating-linear-gradient(0deg,#f3f5f7 0 1px,transparent 1px 34px),repeating-linear-gradient(90deg,#f3f5f7 0 1px,transparent 1px 34px);
  min-height:240px;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--ink-3);font-size:14px;padding:24px;
}

/* ---------- cta ---------- */
.cta{background:linear-gradient(135deg,#12181a,#1d2a22);color:#fff;border-radius:20px;padding:52px 46px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta h2{font-size:28px;margin-bottom:8px}
.cta p{color:rgba(255,255,255,.66);font-size:15px}
.cta .btn-p{background:var(--green)}
.cta .btn-p:hover{background:#34a923}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:52px 0 26px;background:var(--bg-soft)}
.f-top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:34px;border-bottom:1px solid var(--line)}
.f-col h4{font-size:14px;margin-bottom:14px}
.f-col a,.f-col p{display:block;font-size:14px;color:var(--ink-3);margin-bottom:9px}
.f-col a:hover{color:var(--green)}
.f-brand img{height:56px;width:56px;object-fit:contain;margin-bottom:12px}
.f-bot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:20px;font-size:13px;color:var(--ink-3)}
.f-bot a:hover{color:var(--green)}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .about,.contact{grid-template-columns:1fr;gap:34px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .f-top{grid-template-columns:1fr 1fr}
  h1{font-size:34px}
  .sec-head h2{font-size:26px}
}
@media (max-width:720px){
  .menu,.nav-cta{display:none}
  .burger{display:block}
  .menu.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:#fff;padding:18px 24px;border-bottom:1px solid var(--line);gap:0}
  .menu.open a{padding:13px 0;border-bottom:1px solid var(--line)}
  .cards{grid-template-columns:1fr}
  .kv{grid-template-columns:1fr}
  .hero-stats{gap:26px;flex-wrap:wrap}
  section{padding:60px 0}
  .cta{padding:36px 26px}
  h1{font-size:28px}
}