:root {
  --bg: #0b0f14;
  --panel: #111826;
  --text: #dbe6ff;
  --muted: #8ca0c3;
  --line: #263247;
  --primary: #6ea8ff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
.site-header {
  border-bottom: 1px solid var(--line);
  background: #0a111d;
  position: sticky;
  top: 0;
  z-index: 9;
}
.site-header h1 { margin: 16px 0 4px; font-size: 28px; }
.site-header p { margin: 0 0 12px; color: var(--muted); }
nav { display: flex; flex-wrap: wrap; gap: 10px; padding-bottom: 14px; }
nav a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
}
nav a.active, nav a:hover { color: var(--text); border-color: var(--primary); }
main { padding: 24px 0 40px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.post-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.post-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  background: #0d1522;
}
.post-meta { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.post-title { margin: 0 0 8px; font-size: 18px; }
.post-title a { color: var(--text); text-decoration: none; }
.post-title a:hover { color: var(--primary); }
.post-summary { margin: 0; color: #bfd0ef; }
.article-body { line-height: 1.9; color: #cdd9f5; }
.article-body p { margin: 0 0 1em; }
.back-link { display: inline-block; margin-bottom: 14px; color: var(--primary); text-decoration: none; }
.site-footer { border-top: 1px solid var(--line); color: var(--muted); padding: 16px 0 28px; }