:root {
  --ink: #1a1d23;
  --ink-muted: #565d6b;
  --border: #e4e6ea;
  --bg: #ffffff;
  --bg-alt: #f7f8fa;
  --accent: #2451c9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

header.site-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 860px;
  margin: 0 auto;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}

nav.site-nav a {
  color: var(--ink-muted);
  text-decoration: none;
  margin-left: 20px;
  font-size: 0.95rem;
}

nav.site-nav a:hover { color: var(--accent); }

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

h1 { font-size: 1.9rem; margin-bottom: 0.3em; }
h2 { font-size: 1.3rem; margin-top: 2em; }
p, li { color: var(--ink-muted); }
p.lead { font-size: 1.1rem; color: var(--ink); }

.updated {
  color: var(--ink-muted);
  font-size: 0.9rem;
  margin-top: -0.5em;
}

.channels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 28px 0;
}

@media (max-width: 620px) {
  .channels { grid-template-columns: 1fr; }
}

.channel-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  background: var(--bg-alt);
}

.channel-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.channel-card p { margin: 0; font-size: 0.95rem; }
.channel-card a { color: var(--accent); text-decoration: none; font-size: 0.9rem; }

.yt-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 24px 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
  background: var(--bg-alt);
}

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

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  max-width: 860px;
  margin: 0 auto;
  color: var(--ink-muted);
  font-size: 0.88rem;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  align-items: center;
}

footer.site-footer a { color: var(--ink-muted); }

code {
  background: var(--bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}