:root {
  --ink: #26382a;
  --muted: #66745f;
  --paper: #fffdf7;
  --leaf: #78934a;
  --line: rgba(91, 117, 65, 0.18);
  --font: "SimSun", "宋体", "Songti SC", "STSong", "Noto Serif CJK SC", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(145deg, #f8fbef, #fff5f2);
  font-family: var(--font);
  line-height: 1.9;
}

main {
  width: min(860px, calc(100% - 32px));
  margin: 32px auto;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 253, 247, 0.94);
  box-shadow: 0 18px 60px rgba(49, 70, 43, 0.08);
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.35;
}

h2 {
  margin: 30px 0 8px;
  font-size: 20px;
}

p,
li {
  color: #43523e;
  font-size: 15px;
}

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

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

@media (max-width: 720px) {
  main {
    width: calc(100% - 20px);
    margin: 10px auto;
    padding: 20px 16px;
    border-radius: 16px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    margin-top: 23px;
    font-size: 17px;
  }

  p,
  li {
    font-size: 13px;
    line-height: 1.8;
  }
}