:root {
  --text: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --teal: #0d9488;
  --bg: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header h1 {
  font-size: 1.6rem;
  margin: 0 0 8px;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 24px;
}

nav {
  margin-bottom: 28px;
  font-size: 0.95rem;
}

nav a {
  color: var(--teal);
}

h2 {
  font-size: 1.15rem;
  margin: 32px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

p,
li {
  color: #1e293b;
}

ul {
  padding-left: 1.2em;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 12px 0 20px;
  background: #fff;
}

th,
td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f1f5f9;
  width: 28%;
}

.notice {
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  border-radius: 10px;
  padding: 12px 14px;
  margin: 16px 0;
}

footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

a {
  color: var(--teal);
}