/* xdbin · 极简文字流 —— 参考文字型个人站：单栏、无图、排版即设计 */
:root {
  --bg: #fefefe;
  --ink: #26251f;
  --ink-2: #6f6c63;
  --ink-3: #a5a29a;
  --line: #ececea;
  --accent: #b04a55;
  --code-bg: #f6f5f2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #191919;
    --ink: #d6d4cd;
    --ink-2: #97948b;
    --ink-3: #6b6963;
    --line: #2c2c2b;
    --accent: #c97a83;
    --code-bg: #232322;
  }
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 56px 24px 40px;
}

/* ── 头部 ─────────────────────────── */
.site-header { margin-bottom: 48px; }
.site-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.tagline {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--ink-2);
}
.site-nav {
  margin-top: 14px;
  display: flex;
  gap: 18px;
}
.site-nav a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
}
.site-nav a:hover, .site-nav a[aria-current] { color: var(--ink); }

/* ── 首页 bio ─────────────────────── */
.bio {
  font-size: 15px;
  color: var(--ink-2);
  margin-bottom: 44px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

/* ── 按年归档列表 ─────────────────── */
.year-group { margin-bottom: 32px; }
.year {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-3);
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.post-list { list-style: none; }
.post-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 5px 0;
}
.post-date {
  flex: none;
  font-size: 13px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.post-title {
  font-size: 15.5px;
  color: var(--ink);
  text-decoration: none;
  overflow-wrap: anywhere;
}
.post-title:hover { color: var(--accent); }
.list-heading {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  margin-bottom: 20px;
}

/* ── 文章页 ───────────────────────── */
.post-header { margin-bottom: 36px; }
.post-heading {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
}
.post-meta {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--ink-3);
}
.post-meta a { color: var(--ink-3); text-decoration: none; }
.post-meta a:hover { color: var(--accent); }

.post-content { font-size: 16px; }
.post-content p { margin: 1em 0; }
.post-content h2, .post-content h3, .post-content h4 {
  font-weight: 600;
  margin: 2em 0 0.7em;
  line-height: 1.5;
}
.post-content h2 { font-size: 19px; }
.post-content h3 { font-size: 17px; }
.post-content a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--ink-3);
  text-underline-offset: 3px;
}
.post-content a:hover { color: var(--accent); text-decoration-color: var(--accent); }
.post-content blockquote {
  margin: 1.2em 0;
  padding-left: 16px;
  border-left: 2px solid var(--line);
  color: var(--ink-2);
}
.post-content ul, .post-content ol { padding-left: 1.4em; margin: 1em 0; }
.post-content li { margin: 0.3em 0; }
.post-content img { max-width: 100%; border-radius: 4px; }
.post-content hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2.5em 0;
}
.post-content table {
  border-collapse: collapse;
  margin: 1.2em 0;
  font-size: 14.5px;
  width: 100%;
}
.post-content th, .post-content td {
  border: 1px solid var(--line);
  padding: 6px 12px;
  text-align: left;
}
.post-content code {
  font-family: ui-monospace, "SF Mono", Consolas, "Cascadia Mono", Menlo, monospace;
  font-size: 0.86em;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
}
.post-content pre {
  background: var(--code-bg);
  border-radius: 6px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 1.2em 0;
  line-height: 1.65;
}
.post-content pre code { background: none; padding: 0; font-size: 13.5px; }

.post-nav {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}
.post-nav a { color: var(--ink-2); text-decoration: none; }
.post-nav a:hover { color: var(--accent); }

/* ── 页脚 ─────────────────────────── */
.site-footer {
  margin-top: 72px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 12.5px;
  color: var(--ink-3);
}

@media (max-width: 480px) {
  .wrap { padding-top: 40px; }
  .post-list li { gap: 10px; }
}