/* 华中天地环保 官网样式 —— 简约 · 现代 · 科技感 */
:root {
  --green: #0E8A5F;
  --green-d: #0A6B4A;
  --green-l: #E8F6F0;
  --ink: #14201C;
  --ink-2: #3D4B46;
  --ink-3: #6B7A75;
  --line: #E2E8E5;
  --bg: #FFFFFF;
  --bg-2: #F7FAF8;
  --teal: #0C7C8A;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20,32,28,.04), 0 8px 24px rgba(20,32,28,.06);
  --maxw: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.site-head {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.head-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: .2px; }
.logo-mark {
  width: 32px; height: 32px; border-radius: 9px; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--green) 0%, var(--teal) 100%);
  display: grid; place-items: center;
}
.logo-mark svg { width: 18px; height: 18px; }
.logo-sub { font-size: 11px; color: var(--ink-3); font-weight: 400; letter-spacing: .6px; display: block; margin-top: -3px; }

.nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav a {
  padding: 8px 14px; border-radius: 8px; font-size: 15px; color: var(--ink-2);
  transition: background .16s, color .16s;
}
.nav a:hover { background: var(--bg-2); color: var(--ink); }
.nav a.on { color: var(--green); font-weight: 600; }

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 20px; border-radius: 10px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: .18s;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-d); transform: translateY(-1px); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--green); color: var(--green); }
.nav .btn { margin-left: 10px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 88px 0 76px;
  background:
    radial-gradient(900px 420px at 78% -10%, rgba(14,138,95,.10), transparent 62%),
    radial-gradient(700px 360px at 12% 110%, rgba(12,124,138,.08), transparent 60%),
    linear-gradient(180deg, #FBFDFC 0%, #FFFFFF 100%);
  border-bottom: 1px solid var(--line);
}
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--green); font-weight: 600;
  background: var(--green-l); padding: 6px 13px; border-radius: 999px; margin-bottom: 22px;
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
h1 {
  font-size: 46px; line-height: 1.24; letter-spacing: -1px; font-weight: 750;
  margin-bottom: 20px;
}
h1 em { font-style: normal; color: var(--green); }
.hero p.lead { font-size: 17px; color: var(--ink-2); max-width: 520px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-num { display: flex; gap: 40px; margin-top: 44px; padding-top: 28px; border-top: 1px solid var(--line); }
.hero-num div strong { display: block; font-size: 28px; font-weight: 750; letter-spacing: -.5px; color: var(--ink); }
.hero-num div span { font-size: 13px; color: var(--ink-3); }

/* Hero 视觉卡 */
.hero-visual { position: relative; }
.visual-card {
  border-radius: 20px; padding: 28px; background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.visual-card h4 { font-size: 13px; color: var(--ink-3); font-weight: 600; letter-spacing: .4px; margin-bottom: 18px; }
.gauge-row { display: flex; align-items: baseline; gap: 8px; margin-bottom: 6px; }
.gauge-row strong { font-size: 38px; letter-spacing: -1.5px; font-weight: 750; color: var(--green); }
.gauge-row span { font-size: 14px; color: var(--ink-3); }
.bar { height: 8px; border-radius: 99px; background: var(--bg-2); overflow: hidden; margin: 10px 0 22px; }
.bar i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--green), var(--teal)); }
.spec-list { display: grid; gap: 12px; }
.spec { display: flex; justify-content: space-between; font-size: 14px; padding-bottom: 11px; border-bottom: 1px dashed var(--line); }
.spec:last-child { border: 0; padding-bottom: 0; }
.spec b { font-weight: 650; }
.spec span { color: var(--ink-3); }

/* ---------- 通用区块 ---------- */
section { padding: 76px 0; }
.sec-head { max-width: 660px; margin-bottom: 44px; }
.sec-tag { font-size: 13px; font-weight: 700; color: var(--green); letter-spacing: 1.4px; text-transform: uppercase; margin-bottom: 10px; }
h2 { font-size: 32px; letter-spacing: -.7px; line-height: 1.3; font-weight: 720; margin-bottom: 14px; }
.sec-head p { color: var(--ink-2); font-size: 16px; }

.bg-2 { background: var(--bg-2); }

/* 产品卡 */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: .2s;
}
.card:hover { border-color: rgba(14,138,95,.4); box-shadow: var(--shadow); transform: translateY(-2px); }
.card .ico {
  width: 42px; height: 42px; border-radius: 11px; background: var(--green-l);
  display: grid; place-items: center; margin-bottom: 16px;
}
.card .ico svg { width: 21px; height: 21px; stroke: var(--green); fill: none; stroke-width: 1.8; }
.card h3 { font-size: 17px; font-weight: 680; margin-bottom: 8px; letter-spacing: -.2px; }
.card p { font-size: 14.5px; color: var(--ink-2); }
.card .meta { margin-top: 14px; padding-top: 13px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-3); display: flex; gap: 14px; flex-wrap: wrap; }
.card .meta b { color: var(--green); font-weight: 650; }

/* 解决方案 - 横向条 */
.sol { display: grid; gap: 14px; }
.sol-row {
  display: grid; grid-template-columns: 56px 1fr auto; gap: 22px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 26px; transition: .18s;
}
.sol-row:hover { border-color: rgba(14,138,95,.4); box-shadow: var(--shadow); }
.sol-idx { font-size: 15px; font-weight: 750; color: var(--green); font-variant-numeric: tabular-nums; }
.sol-row h3 { font-size: 17px; font-weight: 680; margin-bottom: 4px; }
.sol-row p { font-size: 14.5px; color: var(--ink-2); }
.sol-tags { display: flex; gap: 7px; flex-wrap: wrap; }
.tag { font-size: 12.5px; padding: 4px 10px; border-radius: 999px; background: var(--bg-2); color: var(--ink-2); border: 1px solid var(--line); }

/* 数据条 */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { background: #fff; padding: 30px 24px; }
.stat strong { display: block; font-size: 34px; font-weight: 750; letter-spacing: -1px; color: var(--ink); margin-bottom: 4px; }
.stat strong i { font-style: normal; font-size: 18px; color: var(--green); margin-left: 2px; }
.stat span { font-size: 13.5px; color: var(--ink-3); }

/* CTA */
.cta {
  border-radius: 18px; padding: 52px; text-align: center;
  background: linear-gradient(135deg, #0A6B4A 0%, #0E8A5F 55%, #0C7C8A 100%);
  color: #fff;
}
.cta h2 { color: #fff; margin-bottom: 12px; }
.cta p { color: rgba(255,255,255,.86); margin-bottom: 28px; font-size: 16px; }
.cta .btn-primary { background: #fff; color: var(--green-d); }
.cta .btn-primary:hover { background: #F0F8F4; }

/* 页脚 */
.site-foot { border-top: 1px solid var(--line); background: var(--bg-2); padding: 52px 0 30px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 36px; }
.foot-grid h5 { font-size: 13px; font-weight: 700; letter-spacing: .6px; color: var(--ink); margin-bottom: 14px; }
.foot-grid a, .foot-grid p { display: block; font-size: 14px; color: var(--ink-3); margin-bottom: 9px; }
.foot-grid a:hover { color: var(--green); }
.foot-bot { border-top: 1px solid var(--line); padding-top: 22px; display: flex; justify-content: space-between; gap: 20px; font-size: 13px; color: var(--ink-3); flex-wrap: wrap; }

/* 子页头 */
.page-head { padding: 56px 0 44px; background: linear-gradient(180deg, #FBFDFC, #fff); border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: 38px; margin-bottom: 12px; }
.page-head p { color: var(--ink-2); max-width: 640px; font-size: 16.5px; }
.crumb { font-size: 13px; color: var(--ink-3); margin-bottom: 16px; }
.crumb a:hover { color: var(--green); }

/* 表格 */
.tbl { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.tbl th, .tbl td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.tbl th { font-size: 13px; font-weight: 700; color: var(--ink-3); letter-spacing: .4px; background: var(--bg-2); }
.tbl tr:hover td { background: #FCFEFD; }
.tbl td b { color: var(--green); font-weight: 650; }

/* 关于页 */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.timeline { border-left: 2px solid var(--line); padding-left: 26px; display: grid; gap: 26px; }
.tl-item { position: relative; }
.tl-item::before {
  content: ''; position: absolute; left: -33px; top: 7px;
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--green);
}
.tl-item strong { display: block; font-size: 15px; color: var(--green); font-weight: 700; margin-bottom: 2px; }
.tl-item p { font-size: 14.5px; color: var(--ink-2); }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.info-item { display: flex; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.info-item .ico { width: 38px; height: 38px; border-radius: 10px; background: var(--green-l); display: grid; place-items: center; flex: 0 0 auto; }
.info-item .ico svg { width: 18px; height: 18px; stroke: var(--green); fill: none; stroke-width: 1.9; }
.info-item h4 { font-size: 14px; color: var(--ink-3); font-weight: 600; margin-bottom: 3px; }
.info-item p { font-size: 15.5px; font-weight: 600; }
.form-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 14.5px; font-family: inherit; color: var(--ink); background: #fff; transition: .16s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(14,138,95,.10);
}
.field textarea { resize: vertical; min-height: 96px; }
.form-note { font-size: 12.5px; color: var(--ink-3); margin-top: 12px; }
.msg { padding: 11px 14px; border-radius: 9px; font-size: 14px; margin-bottom: 16px; display: none; }
.msg.ok { background: var(--green-l); color: var(--green-d); display: block; }
.msg.err { background: #FDECEC; color: #B42318; display: block; }

/* 响应式 */
@media (max-width: 980px) {
  .hero-grid, .two-col, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 36px; }
  .nav { display: none; }
}
@media (max-width: 640px) {
  .cards, .stats { grid-template-columns: 1fr; }
  .sol-row { grid-template-columns: 1fr; gap: 10px; }
  h1 { font-size: 30px; }
  h2 { font-size: 25px; }
  section { padding: 52px 0; }
  .hero { padding: 56px 0 48px; }
  .cta { padding: 34px 22px; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  .hero-num { gap: 26px; }
}