:root {
  --page: #eef1ef;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --primary: #2e7d5b;
  --accent: #e79041;
  --line: rgba(0, 0, 0, 0.08);
  --max: 720px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--page);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--card);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 14px;
  font-size: 13px;
}

.hero {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px 28px;
  margin-bottom: 20px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 800;
}

.tagline {
  margin: 0 0 16px;
  color: var(--primary);
  font-weight: 600;
}

.hero p {
  margin: 0 0 12px;
  color: var(--muted);
}

.hero p:last-child {
  margin-bottom: 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 28px;
  margin-bottom: 20px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.card ul {
  margin: 0;
  padding-left: 1.2em;
  color: var(--muted);
}

.card li + li {
  margin-top: 6px;
}

.doc h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

.doc .meta {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 13px;
}

.doc h2 {
  margin: 28px 0 10px;
  font-size: 17px;
}

.doc p,
.doc li {
  color: #374151;
  font-size: 15px;
}

.doc p {
  margin: 0 0 12px;
}

.doc ul {
  margin: 0 0 12px;
  padding-left: 1.2em;
}

.footer {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.footer p {
  margin: 0 0 8px;
}

.beian {
  color: var(--muted);
}

@media (max-width: 560px) {
  .top {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 24px 20px;
  }

  .hero h1 {
    font-size: 24px;
  }
}