:root {
  --bg-color: #0d1117;
  --card-bg: #161b22;
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --accent-gold: #f59e0b;
  --accent-blue: #38bdf8;
  --border: #30363d;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  padding-bottom: 2rem;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2.2rem;
  margin-top: 0.5rem;
  color: #fff;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.badge {
  display: inline-block;
  background-color: var(--accent-gold);
  color: #000;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--accent-blue);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.tech-item {
  background-color: rgba(255, 255, 255, 0.03);
  padding: 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.tech-item .label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tech-item .value {
  display: block;
  font-size: 1.1rem;
  font-weight: bold;
  font-family: monospace;
  color: var(--accent-gold);
}

.rules-list {
  padding-left: 1.2rem;
}

.rules-list li {
  margin-bottom: 0.5rem;
}

.event-box {
  background-color: rgba(56, 189, 248, 0.05);
  border-left: 4px solid var(--accent-blue);
  padding: 1rem;
  border-radius: 0 6px 6px 0;
}

.event-box h3 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

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

a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 2rem;
}