:root {
  color-scheme: light dark;
  --bg: #0b1220;
  --card: #121a2b;
  --text: #e8edf6;
  --muted: #9fb1d1;
  --link: #78b8ff;
  --border: #2a3b5f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

header {
  border-bottom: 1px solid var(--border);
  background: rgba(8, 13, 24, 0.95);
}

.header-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 1rem;
}

h1, h2, h3 { line-height: 1.25; }

h1 { margin: 0 0 0.4rem; font-size: 1.95rem; }

section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-top: 1rem;
  padding: 1rem 1.1rem;
}

ul { padding-left: 1.2rem; }

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.75rem;
}

.nav-pill {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.9rem;
}

.grid-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.65rem;
}

.card-link {
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.85rem;
  background: rgba(255, 255, 255, 0.02);
}

.meta {
  color: var(--muted);
  font-size: 0.92rem;
}

code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

@media (max-width: 720px) {
  h1 { font-size: 1.6rem; }
}