:root {
  --paper: #faf9f7;
  --ink: #23211e;
  --ink-soft: #6b6660;
  --line: #e5e1da;
  --accent: #a8471f;
  --code-bg: #f2efe9;
  --max: 46rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  text-rendering: optimizeLegibility;
}

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

.site-head {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 20px 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .02em;
}
.brand:hover { color: var(--accent); text-decoration: none; }

.site-head nav a {
  margin-left: 16px;
  font-size: .9rem;
  color: var(--ink-soft);
}
.site-head nav a:first-child { margin-left: 0; }
.site-head nav a:hover { color: var(--accent); }

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.page-title {
  font-size: 1.5rem;
  margin: 0 0 26px;
  letter-spacing: .01em;
}

/* 列表卡片 */
.card {
  padding: 0 0 26px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--line);
}
.card:last-child { border-bottom: none; }

.card h2 {
  font-size: 1.2rem;
  margin: 0 0 8px;
  line-height: 1.45;
}
.card h2 a { color: var(--ink); }
.card h2 a:hover { color: var(--accent); text-decoration: none; }

.meta {
  font-size: .85rem;
  color: var(--ink-soft);
  margin: 0 0 10px;
}

.chip {
  display: inline-block;
  padding: 1px 9px;
  margin-right: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .78rem;
  color: var(--ink-soft);
  background: #fff;
}
.chip:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.summary {
  margin: 0;
  color: #4a4641;
  font-size: .95rem;
}

.empty { color: var(--ink-soft); }

/* 文章页 */
.post h1 {
  font-size: 1.6rem;
  line-height: 1.4;
  margin: 0 0 12px;
}

.body { font-size: 1.02rem; }

.body h2 { font-size: 1.25rem; margin: 2.1em 0 .7em; }
.body h3 { font-size: 1.08rem; margin: 1.8em 0 .6em; }
.body h4, .body h5, .body h6 { font-size: 1rem; margin: 1.6em 0 .5em; }

.body p { margin: 0 0 1.15em; }

.body img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  display: block;
  margin: 1.4em auto;
}

.body blockquote {
  margin: 1.4em 0;
  padding: .2em 0 .2em 1em;
  border-left: 3px solid var(--accent);
  color: #55504a;
}
.body blockquote p:last-child { margin-bottom: 0; }

.body ul, .body ol { padding-left: 1.4em; margin: 0 0 1.15em; }
.body li { margin: .35em 0; }

.body code {
  background: var(--code-bg);
  padding: .1em .38em;
  border-radius: 4px;
  font-size: .9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

.body pre.code {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: .88rem;
  line-height: 1.6;
  margin: 1.4em 0;
}
.body pre.code code { background: none; padding: 0; font-size: 1em; }

.body hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2.2em 0;
}

.body a { border-bottom: 1px solid rgba(168, 71, 31, .28); }
.body a:hover { text-decoration: none; border-bottom-color: var(--accent); }

.back { margin-top: 40px; font-size: .9rem; }

.site-foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px 20px 48px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: .82rem;
}
.site-foot p { margin: 0; }

@media (max-width: 480px) {
  .site-head { padding: 20px 16px 14px; }
  main { padding: 24px 16px 52px; }
  .post h1 { font-size: 1.35rem; }
  .body { font-size: 1rem; }
}