:root{
  --green:#2E7D5B;
  --green-mid:#4C9A6A;
  --green-soft:#EAF3EE;
  --green-deep:#1F5C42;
  --bg:#F7F8F5;
  --card:#FFFFFF;
  --line:#E3E6E1;
  --ink:#25322C;
  --ink2:#5F6E66;
  --radius:10px;
  --maxw:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:28px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:.5px}
.brand .mark{
  width:32px;height:32px;border-radius:8px;background:var(--green);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:700;
}
.brand small{display:block;font-size:11px;color:var(--ink2);font-weight:400;letter-spacing:2px;margin-top:-2px}
.nav nav{display:flex;gap:22px;margin-left:auto;font-size:15px;color:var(--ink2)}
.nav nav a{padding:6px 0;border-bottom:2px solid transparent}
.nav nav a:hover,.nav nav a.on{color:var(--green);border-bottom-color:var(--green)}
.tel{
  display:inline-flex;align-items:center;gap:7px;background:var(--green);color:#fff;
  padding:9px 16px;border-radius:8px;font-size:14px;font-weight:600;white-space:nowrap;
}
.tel:hover{background:var(--green-deep)}

/* ---------- hero ---------- */
.hero{background:linear-gradient(160deg,var(--green-soft) 0%,#F3F6F1 60%,var(--bg) 100%);padding:70px 0 58px}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.kicker{display:inline-block;font-size:13px;color:var(--green);background:#fff;border:1px solid var(--line);
  padding:4px 12px;border-radius:99px;margin-bottom:18px;letter-spacing:1px}
h1{font-size:42px;line-height:1.28;letter-spacing:-.5px;font-weight:700}
h1 em{font-style:normal;color:var(--green)}
.hero p.lead{margin-top:18px;font-size:16.5px;color:var(--ink2);max-width:34em}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:8px;font-weight:600;font-size:15px}
.btn-p{background:var(--green);color:#fff}
.btn-p:hover{background:var(--green-deep)}
.btn-s{background:#fff;color:var(--green);border:1px solid var(--line)}
.btn-s:hover{border-color:var(--green-mid)}

.stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--green);
  border-radius:var(--radius);padding:18px 20px}
.stat b{display:block;font-size:28px;color:var(--green);line-height:1.2;letter-spacing:-.5px}
.stat b i{font-style:normal;font-size:15px;color:var(--ink2);margin-left:3px;font-weight:500}
.stat span{font-size:13.5px;color:var(--ink2)}

/* ---------- sections ---------- */
section{padding:64px 0}
section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.s-head{max-width:640px;margin-bottom:38px}
.s-head .bar{width:34px;height:3px;background:var(--green);border-radius:2px;margin-bottom:14px}
h2{font-size:28px;letter-spacing:-.3px;font-weight:700}
.s-head p{margin-top:12px;color:var(--ink2);font-size:15.5px}

.grid{display:grid;gap:16px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}

.card{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--green);
  border-radius:var(--radius);padding:22px 22px 20px}
.card h3{font-size:16.5px;margin-bottom:9px;display:flex;align-items:center;gap:8px}
.card p{font-size:14.5px;color:var(--ink2)}
.card .ico{width:26px;height:26px;flex:0 0 26px;border-radius:7px;background:var(--green-soft);
  display:flex;align-items:center;justify-content:center;color:var(--green)}
.card .ico svg{width:15px;height:15px;stroke-width:2}

/* 产品 */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{background:#fff;border:1px solid var(--line);border-radius:99px;padding:6px 16px;
  font-size:14px;color:var(--ink2);cursor:pointer}
.chip.on{background:var(--green);border-color:var(--green);color:#fff;font-weight:600}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;position:relative;overflow:hidden}
.pcard::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--green-mid)}
.pcard .pt{font-size:15.5px;font-weight:600;margin-bottom:6px}
.pcard .spec{font-size:13.5px;color:var(--ink2);margin-bottom:12px}
.pcard .row{display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:12px;color:var(--green);background:var(--green-soft);border-radius:5px;padding:2px 9px}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px}
.step{padding:0 22px;border-left:1px solid var(--line)}
.step:first-child{border-left:0;padding-left:0}
.step b{display:block;font-size:13px;color:var(--green-mid);letter-spacing:2px;margin-bottom:8px}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink2)}

/* 表格 */
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
th,td{text-align:left;padding:13px 16px;font-size:14.5px;border-bottom:1px solid var(--line)}
th{background:var(--green-soft);color:var(--green-deep);font-weight:600;font-size:14px}
tr:last-child td{border-bottom:0}

/* CTA 条 */
.cta{background:var(--green);color:#fff;border-radius:14px;padding:36px 40px;display:flex;
  align-items:center;gap:28px;flex-wrap:wrap}
.cta h2{color:#fff;font-size:24px}
.cta p{color:rgba(255,255,255,.85);margin-top:8px;font-size:15px}
.cta .btn-s{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.cta .btn-s:hover{border-color:#fff}
.cta .btn-p{background:#fff;color:var(--green)}
.cta .btn-p:hover{background:#f0f0f0}
.cta .act{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap}

/* footer */
footer{background:var(--green-deep);color:rgba(255,255,255,.82);padding:46px 0 30px;margin-top:0}
footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:34px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer p,footer li{font-size:13.8px;line-height:2;list-style:none}
footer a:hover{color:#fff}
footer .bt{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);
  font-size:13px;display:flex;gap:18px;flex-wrap:wrap;justify-content:space-between}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:34px}
  h1{font-size:32px}
  .g4,.g3{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr;gap:26px 0}
  .step:nth-child(3){border-left:0;padding-left:0}
  /* 移动端：导航改为第二行横向可滑动，保证每个页面都点得到 */
  .nav{flex-wrap:wrap;height:auto;padding:10px 0;row-gap:8px}
  .nav nav{order:3;width:100%;margin-left:0;gap:18px;overflow-x:auto;
    -webkit-overflow-scrolling:touch;font-size:14.5px;white-space:nowrap;
    padding-bottom:2px;scrollbar-width:none}
  .nav nav::-webkit-scrollbar{display:none}
  .nav nav a{border-bottom:0;padding:2px 0}
  .nav nav a.on{color:var(--green);font-weight:600}
  footer .cols{grid-template-columns:1fr}
  .cta{padding:28px 24px}
  .cta .act{margin-left:0}
  section{padding:48px 0}
}
@media (max-width:560px){
  .g4,.g3,.g2{grid-template-columns:1fr}
  h1{font-size:27px}
  h2{font-size:22px}
  .steps{grid-template-columns:1fr}
  .step{border-left:0;padding:0;border-top:1px solid var(--line);padding-top:18px}
  .step:first-child{border-top:0;padding-top:0}
}