:root {
  --bg: #09090b;
  --panel: #18181b;
  --border: #27272a;
  --text: #e4e4e7;
  --muted: #a1a1aa;
  --accent: #6366f1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }

nav {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
}

.nav-links a {
  margin-left: 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 2rem 1rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: 8px;
}

.muted {
  color: var(--muted);
}

.tag-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  border: 1px solid var(--border);
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
}

.tag.active {
  background: var(--accent);
  border-color: var(--accent);
}

.content-list li {
  margin-bottom: 1rem;
}