:root {
  color-scheme: light;
  --bg: #faf7f2;
  --surface: #ffffff;
  --text: #20201e;
  --muted: #6f6a61;
  --line: #e8ded2;
  --accent: #2f6f4e;
  --accent-soft: #edf6ef;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.72;
}

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

a:hover {
  text-decoration: underline;
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.header {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.brand {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 15px;
  font-weight: 700;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

.meta {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 6px 12px;
  background: var(--accent-soft);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 650;
}

main {
  margin-top: 22px;
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

section + section {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: 0;
}

h3 {
  margin: 18px 0 8px;
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: 0;
}

p {
  margin: 0 0 12px;
}

ul,
ol {
  margin: 8px 0 0;
  padding-left: 22px;
}

li + li {
  margin-top: 8px;
}

.notice {
  margin: 16px 0 0;
  padding: 14px 16px;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  color: #264733;
}

.footer {
  margin-top: 20px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 640px) {
  .page {
    width: min(100% - 20px, 920px);
    padding: 20px 0 36px;
  }

  .header,
  main {
    padding: 20px;
  }

  h1 {
    font-size: 30px;
  }
}