/* 青木极致官网 - 全站样式 */
:root {
  --primary: #0F6E56;
  --primary-dark: #085041;
  --primary-light: #E1F5EE;
  --text: #1A2B26;
  --text-sub: #5A6B65;
  --bg: #FFFFFF;
  --bg-alt: #F6F8F7;
  --border: #E3EAE7;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
}
a { color: var(--primary); text-decoration: none; }
img { max-width: 100%; }

/* 头部 */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky; top: 0; z-index: 10;
}
.site-header .inner {
  max-width: 1080px; margin: 0 auto; padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.brand { font-size: 20px; font-weight: 700; color: var(--primary-dark); letter-spacing: 1px; }
.brand small { display: block; font-size: 11px; color: var(--text-sub); font-weight: 400; letter-spacing: 2px; }
nav.main-nav a {
  margin-left: 22px; color: var(--text-sub); font-size: 15px; padding-bottom: 4px;
}
nav.main-nav a:hover, nav.main-nav a.active { color: var(--primary); border-bottom: 2px solid var(--primary); }

/* Hero */
.hero { background: var(--primary-light); padding: 72px 24px; }
.hero .inner { max-width: 1080px; margin: 0 auto; }
.hero h1 { font-size: 34px; line-height: 1.4; color: var(--primary-dark); font-weight: 700; }
.hero p.sub { margin-top: 16px; font-size: 17px; color: var(--text-sub); max-width: 720px; }
.hero .tags { margin-top: 24px; }
.hero .tags span {
  display: inline-block; background: var(--bg); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 16px; margin: 4px 8px 4px 0; font-size: 14px; color: var(--primary-dark);
}

/* 区块 */
section { padding: 56px 24px; }
section.alt { background: var(--bg-alt); }
.inner { max-width: 1080px; margin: 0 auto; }
h2.sec { font-size: 26px; color: var(--primary-dark); margin-bottom: 8px; font-weight: 700; }
p.sec-sub { color: var(--text-sub); margin-bottom: 32px; }

/* 卡片 */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 28px;
}
.card h3 { font-size: 18px; color: var(--primary-dark); margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--text-sub); }
.card ul { margin-top: 12px; padding-left: 18px; font-size: 14px; color: var(--text-sub); }
.card li { margin: 4px 0; }

/* 场景标签墙 */
.scene-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.scene {
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px; text-align: center;
}
.scene b { display: block; color: var(--primary-dark); font-size: 16px; }
.scene span { font-size: 13px; color: var(--text-sub); }

/* 事实数字 */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.facts .num { font-size: 30px; font-weight: 700; color: var(--primary); }
.facts .label { font-size: 14px; color: var(--text-sub); }

/* 表格 */
table.fact-table { width: 100%; border-collapse: collapse; font-size: 15px; }
table.fact-table th, table.fact-table td {
  border: 1px solid var(--border); padding: 10px 14px; text-align: left; vertical-align: top;
}
table.fact-table th { background: var(--bg-alt); color: var(--primary-dark); width: 200px; }

/* 流程 */
.steps { counter-reset: step; }
.step { position: relative; padding: 0 0 28px 56px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { font-size: 17px; color: var(--primary-dark); }
.step p { font-size: 15px; color: var(--text-sub); }

/* 联系 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.contact-item { margin-bottom: 18px; }
.contact-item b { color: var(--primary-dark); display: block; margin-bottom: 4px; }
.contact-item span { color: var(--text-sub); font-size: 15px; }
.notice {
  background: #FFF7E8; border: 1px solid #F0D9A8; border-radius: 8px;
  padding: 12px 16px; font-size: 14px; color: #8A6116; margin-top: 16px;
}

/* 页脚 */
.site-footer { background: var(--primary-dark); color: #CFE5DD; padding: 40px 24px 28px; font-size: 14px; }
.site-footer .inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 10px; }
.site-footer a { color: #9FD4C3; }
.copyright { margin-top: 28px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.15); font-size: 12px; color: #8FB8AB; }

@media (max-width: 860px) {
  .cards, .facts { grid-template-columns: 1fr 1fr; }
  .scene-wall { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .site-footer .inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 26px; }
}
@media (max-width: 520px) {
  .cards, .scene-wall, .facts { grid-template-columns: 1fr; }
}