:root {
  --bg: #0d1117;
  --card: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent2: #2ea043;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Segoe UI, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 18px 60px;
}
.topnav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.topnav a {
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--border);
  background: rgba(88,166,255,.08);
  padding: 8px 11px;
  border-radius: 8px;
  font-size: 13px;
}
h1 { font-size: clamp(1.55rem, 3.4vw, 2.25rem); line-height: 1.2; margin: 6px 0 10px; }
h2 { font-size: clamp(1.12rem, 2.4vw, 1.45rem); margin: 26px 0 10px; }
.meta, .disclosure, .small { color: var(--muted); font-size: 14px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin: 16px 0;
}
.cta {
  display: inline-block;
  margin-top: 10px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 700;
  border-radius: 10px;
  padding: 11px 14px;
}
ul { padding-left: 20px; }
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
}
.article-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.article-card a { color: var(--text); text-decoration: none; font-weight: 700; }
.footer { margin-top: 26px; color: var(--muted); font-size: 13px; }
@media (max-width: 700px) {
  .grid { grid-template-columns: 1fr; }
  .container { padding: 18px 14px 44px; }
}