/* 手机阅读页。暖白底、系统字体，正文限制行宽，不出现仓库导航。 */
:root {
  color-scheme: light dark;
  --bg: #f4f2ef;
  --fg: #0c0c0c;
  --muted: #5c5c5c;
  --line: #d4d0ca;
  --link: #9a3412;
  --code-bg: #ebe7e1;
  --max: 40rem;
  --font: "PingFang SC", "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #080808;
    --fg: #f2f2f2;
    --muted: #a3a3a3;
    --line: #2a2a2a;
    --link: #ffb088;
    --code-bg: #1c1c1c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
}

article {
  max-width: var(--max);
  margin: 0 auto;
  padding:
    max(28px, env(safe-area-inset-top))
    max(20px, env(safe-area-inset-right))
    max(48px, env(safe-area-inset-bottom))
    max(20px, env(safe-area-inset-left));
}

h1 {
  margin: 0 0 0.8em;
  font-size: 1.7rem;
  line-height: 1.25;
  letter-spacing: -0.03em;
}

h2 {
  margin: 1.6em 0 0.5em;
  font-size: 1.2rem;
  line-height: 1.35;
}

h3 {
  margin: 1.3em 0 0.4em;
  font-size: 1.05rem;
}

p, ul, ol { margin: 0.7em 0; }

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

img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0.8em 0;
  border-radius: 10px;
}

code {
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: var(--code-bg);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
}

pre {
  overflow-x: auto;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--code-bg);
}

pre code { padding: 0; background: transparent; }

table {
  width: 100%;
  margin: 1em 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th, td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th { color: var(--muted); font-weight: 600; }