* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #0d1117;
  color: #c9d1d9;
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 14px;
  line-height: 1.6;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #30363d;
}

.title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #58a6ff;
  margin: 0 0 0.5rem 0;
}

.tagline {
  margin: 0;
  color: #8b949e;
  font-size: 0.95rem;
}

.main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.block {
  padding: 1rem;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 6px;
}

.block h2 {
  font-size: 1rem;
  color: #f85149;
  margin: 0 0 0.75rem 0;
  letter-spacing: 0.05em;
}

.block p {
  margin: 0;
  color: #c9d1d9;
}

.geek-fact {
  color: #8b949e;
  font-style: italic;
}

.terminal pre {
  margin: 0;
  overflow-x: auto;
}

.terminal code {
  color: #7ee787;
  font-size: 13px;
}

.footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #30363d;
  font-size: 0.85rem;
  color: #8b949e;
}

.footer p {
  margin: 0.25rem 0;
}

.notice {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: #6e7681;
}