:root {
  --bg: #e8f5f3;
  --side: #0f4c4a;
  --side-ink: #d7f3ef;
  --accent: #147a74;
  --ink: #12312f;
  --paper: #f7fffe;
  --line: #b7d8d4;
  --warn: #b45309;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font: 16px/1.7 "Trebuchet MS", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: var(--accent); }
a:hover { color: var(--side); }

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
.side {
  background: var(--side);
  color: var(--side-ink);
  padding: 28px 22px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.side .mark {
  display: flex;
  gap: 10px;
  align-items: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  margin-bottom: 28px;
}
.side nav a {
  display: block;
  color: var(--side-ink);
  text-decoration: none;
  padding: 10px 12px;
  border-left: 3px solid transparent;
  margin-bottom: 6px;
}
.side nav a.on {
  background: rgba(255,255,255,.08);
  border-left-color: #5eead4;
  color: #fff;
  font-weight: 700;
}
.side .mini {
  margin-top: 28px;
  display: block;
  background: #5eead4;
  color: #04322f;
  text-align: center;
  text-decoration: none;
  padding: 10px;
  font-weight: 700;
}
.main { padding: 0 0 40px; }
.banner {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 48px 48px 40px;
}
.banner h1 {
  margin: 0 0 12px;
  font-family: "Georgia", "Songti SC", "SimSun", serif;
  font-size: 34px;
  line-height: 1.35;
}
.banner p { margin: 0 0 22px; max-width: 46em; }
.acts { display: flex; gap: 10px; flex-wrap: wrap; }
.go, .sub {
  display: inline-block;
  padding: 11px 18px;
  text-decoration: none;
  font-weight: 700;
}
.go { background: var(--accent); color: #fff; }
.sub { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.go:hover, .sub:hover { text-decoration: none; filter: brightness(.95); }

.chunk { padding: 40px 48px 8px; }
.chunk h2 {
  margin: 0 0 12px;
  font-size: 24px;
  border-left: 6px solid var(--accent);
  padding-left: 12px;
}
.chunk p { margin: 0 0 14px; }
.compare {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  margin: 16px 0 24px;
}
.compare th, .compare td { border: 1px solid var(--line); padding: 10px; }
.compare th { background: var(--side); color: #fff; }
.quote {
  background: #fff;
  border: 1px dashed var(--line);
  padding: 16px 18px;
  margin: 12px 0 20px;
}
.people { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.people article {
  background: #fff;
  padding: 16px;
  border-top: 4px solid var(--accent);
}
.people h3 { margin: 0 0 8px; font-size: 17px; }
.ask { margin: 0 0 28px; }
.ask h3 { margin: 16px 0 6px; font-size: 17px; }
.plats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }
.plats a {
  background: var(--side);
  color: #fff;
  text-decoration: none;
  padding: 14px;
  text-align: center;
  font-weight: 700;
}
.footline {
  margin: 36px 48px 0;
  padding: 20px 0 8px;
  border-top: 1px solid var(--line);
  color: #3d5c59;
  font-size: 13px;
}

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: relative; height: auto; }
  .side nav { display: flex; flex-wrap: wrap; gap: 4px; }
  .banner, .chunk, .footline { padding-left: 20px; padding-right: 20px; }
  .people, .plats { grid-template-columns: 1fr; }
}