:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #58a6ff;
  --accent-dim: #1f6feb;
  --code-bg: #0a0c10;
  --danger: #f85149;
  --success: #3fb950;
  --warn: #d29922;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}
.wrap { max-width: 840px; margin: 0 auto; padding: 0 24px; }
header.site { border-bottom: 1px solid var(--border); padding: 28px 0; margin-bottom: 48px; }
header.site .wrap { display: flex; justify-content: space-between; align-items: center; }
header.site .brand { font-weight: 600; font-size: 1.1rem; color: var(--text); text-decoration: none; letter-spacing: -0.02em; }
header.site .brand span { color: var(--accent); }
header.site nav a { color: var(--text-dim); text-decoration: none; margin-left: 20px; font-size: 0.9rem; }
header.site nav a:hover { color: var(--accent); }
main { padding-bottom: 80px; }
h1 { font-size: 2rem; letter-spacing: -0.02em; margin-bottom: 8px; }
h2 { font-size: 1.35rem; margin-top: 40px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
h3 { font-size: 1.05rem; margin-top: 28px; }
.subtitle { color: var(--text-dim); font-size: 1.05rem; margin-bottom: 32px; }
.meta-table { width: 100%; border-collapse: collapse; margin: 24px 0 40px; font-size: 0.9rem; }
.meta-table td { padding: 6px 12px 6px 0; border-bottom: 1px solid var(--border); vertical-align: top; }
.meta-table td:first-child { color: var(--text-dim); width: 160px; white-space: nowrap; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.02em; }
.badge.medium { background: rgba(210,153,34,0.15); color: var(--warn); border: 1px solid rgba(210,153,34,0.4); }
.badge.fixed { background: rgba(63,185,80,0.15); color: var(--success); border: 1px solid rgba(63,185,80,0.4); }
pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 16px 18px; overflow-x: auto; font-size: 0.85rem; }
code { font-family: "SF Mono", Menlo, Consolas, monospace; background: var(--code-bg); padding: 2px 6px; border-radius: 4px; font-size: 0.88em; }
pre code { background: none; padding: 0; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
.card-list { list-style: none; padding: 0; margin: 0; }
.card { display: block; border: 1px solid var(--border); background: var(--bg-alt); border-radius: 10px; padding: 20px 22px; margin-bottom: 16px; text-decoration: none; transition: border-color 0.15s ease; }
.card:hover { border-color: var(--accent-dim); }
.card .card-title { color: var(--text); font-weight: 600; font-size: 1.05rem; margin-bottom: 6px; }
.card .card-meta { color: var(--text-dim); font-size: 0.82rem; margin-bottom: 10px; }
.card .card-desc { color: var(--text-dim); font-size: 0.92rem; margin: 0; }
footer.site { border-top: 1px solid var(--border); padding: 28px 0; color: var(--text-dim); font-size: 0.85rem; }
footer.site a { color: var(--text-dim); }
footer.site a:hover { color: var(--accent); }
.disclosure-note { background: var(--bg-alt); border: 1px solid var(--border); border-left: 3px solid var(--warn); border-radius: 0 8px 8px 0; padding: 14px 18px; font-size: 0.9rem; color: var(--text-dim); margin: 24px 0; }