:root {
  color-scheme: light;
  --bg: #fffaf3;
  --surface: #ffffff;
  --text: #2f2723;
  --muted: #76695f;
  --line: #eadfd5;
  --accent: #ee746f;
  --accent-soft: #fff0ed;
  --mint: #e7f5ee;
}

* {
  box-sizing: border-box;
}

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

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

header {
  padding: 28px 0 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

h1 {
  margin: 22px 0 10px;
  font-size: 34px;
  line-height: 1.22;
  letter-spacing: 0;
}

h2 {
  margin: 34px 0 12px;
  font-size: 22px;
  line-height: 1.35;
}

h3 {
  margin: 24px 0 8px;
  font-size: 17px;
  line-height: 1.4;
}

p {
  margin: 0 0 14px;
}

ul {
  padding-left: 22px;
  margin: 0 0 18px;
}

a {
  color: #b84c48;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.subtitle {
  max-width: 660px;
  color: var(--muted);
  font-size: 17px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  margin-top: 22px;
  box-shadow: 0 10px 28px rgba(78, 53, 39, 0.06);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
}

.note {
  background: var(--mint);
  border: 1px solid #cce6d8;
  border-radius: 8px;
  padding: 16px;
  color: #35594a;
}

footer {
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  .page {
    padding: 24px 16px 48px;
  }

  h1 {
    font-size: 28px;
  }

  .card {
    padding: 18px;
  }
}