:root {
  --bg: #0d1117;
  --card-bg: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --text-dim: #8b949e;
  --heading: #f0f6fc;
  --accent: #58a6ff;
  --badge-bg: rgba(56, 139, 253, 0.15);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}
.brand {
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--heading);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand span { color: var(--accent); }
nav a {
  color: var(--text-dim);
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
  transition: color 0.2s;
}
nav a:hover, nav a.active { color: var(--heading); }
main {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 3.5rem 2rem;
  flex: 1;
}
.hero {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}
.hero-tag {
  display: inline-block;
  background: var(--badge-bg);
  color: var(--accent);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 1.2rem;
}
h1 {
  font-size: 2.6rem;
  color: var(--heading);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}
p.lead {
  font-size: 1.15rem;
  color: var(--text-dim);
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.75rem;
}
.card h3 {
  color: var(--heading);
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}
.card p {
  color: var(--text-dim);
  font-size: 0.92rem;
}
.status-bar {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
}
.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 500;
  color: var(--heading);
}
.dot {
  width: 9px;
  height: 9px;
  background: #3fb950;
  border-radius: 50%;
  box-shadow: 0 0 8px #3fb950;
}
footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 2rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}
@media (max-width: 600px) {
  h1 { font-size: 1.9rem; }
  .status-bar { flex-direction: column; gap: 0.75rem; text-align: center; }
}