:root {
  --bg: #f7f3ec;
  --paper: #fffdf9;
  --ink: #2b2723;
  --muted: #7a7066;
  --line: #e6ddd0;
  --accent: #9a5b3c;
  --accent-soft: #f1e4da;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1a18;
    --paper: #23201d;
    --ink: #e8e1d7;
    --muted: #a39788;
    --line: #3a3530;
    --accent: #d9926b;
    --accent-soft: #3a2c24;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.9;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部 */
.site-head {
  padding: 56px 0 28px;
  border-bottom: 1px solid var(--line);
}
.site-title {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0;
}
.site-title a { color: var(--ink); }
.site-title a:hover { text-decoration: none; }
.site-desc {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 15px;
}
.site-nav {
  margin-top: 18px;
  font-family: var(--sans);
  font-size: 14px;
}
.site-nav a { color: var(--muted); margin-right: 18px; }
.site-nav a:hover, .site-nav a.on { color: var(--accent); }

/* 文章列表 */
.post-list { list-style: none; padding: 0; margin: 36px 0; }
.post-list li {
  padding: 22px 0;
  border-bottom: 1px dashed var(--line);
}
.post-list li:last-child { border-bottom: none; }
.post-list h2 {
  font-size: 21px;
  margin: 0 0 4px;
  line-height: 1.5;
}
.post-list h2 a { color: var(--ink); }
.post-list h2 a:hover { color: var(--accent); text-decoration: none; }
.post-list p { margin: 6px 0 0; color: var(--muted); font-size: 15.5px; }

.meta {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.02em;
}
.tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 3px;
  padding: 0 7px;
  margin-left: 8px;
  font-size: 12px;
}

/* 文章页 */
.post { margin: 40px 0 24px; }
.post h1 {
  font-size: 28px;
  line-height: 1.45;
  margin: 0 0 8px;
}
.post .meta { margin-bottom: 30px; }
.post p { margin: 0 0 1.3em; text-align: justify; }
.post h2 { font-size: 20px; margin: 2em 0 0.8em; }
.post blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 18px;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}
.post ul { padding-left: 1.3em; }
.post li { margin-bottom: 0.4em; }

.post-foot {
  margin: 40px 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--sans);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* 页脚 */
.site-foot {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding: 24px 0 48px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .site-head { padding-top: 36px; }
  .site-title { font-size: 25px; }
  .post h1 { font-size: 24px; }
}