:root {
  --bg: #faf7f4;
  --card: #ffffff;
  --text: #2c2419;
  --subtext: #6b6258;
  --accent: #7fb3a2;
  --accent-dark: #5f9988;
  --border: rgba(44, 36, 25, 0.08);
  --max: 720px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 24px 16px 48px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
}

header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-decoration: none;
}

h1 {
  margin: 0 0 10px;
  font-size: 28px;
  line-height: 1.3;
  font-weight: 700;
}

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

main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 20px;
  box-shadow: 0 8px 24px rgba(44, 36, 25, 0.04);
}

h2 {
  margin: 28px 0 10px;
  font-size: 18px;
  line-height: 1.4;
}

h2:first-child {
  margin-top: 0;
}

p,
li {
  color: var(--text);
}

p {
  margin: 0 0 12px;
}

ul,
ol {
  margin: 0 0 12px;
  padding-left: 1.25em;
}

li {
  margin-bottom: 6px;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

strong {
  font-weight: 600;
}

.note {
  margin: 16px 0;
  padding: 12px 14px;
  font-size: 14px;
  color: var(--subtext);
  background: rgba(127, 179, 162, 0.1);
  border-radius: 10px;
}

footer {
  max-width: var(--max);
  margin: 24px auto 0;
  font-size: 13px;
  color: var(--subtext);
  text-align: center;
}

footer a {
  margin: 0 8px;
}

@media (min-width: 640px) {
  body {
    padding: 40px 24px 64px;
  }

  main {
    padding: 32px 36px;
  }

  h1 {
    font-size: 32px;
  }
}