:root { --bg: #0f1115; --fg: #e2e8f0; --accent: #38bdf8; --card: #181b21; }
body { font-family: system-ui, sans-serif; background: var(--bg); color: var(--fg); max-width: 820px; margin: 40px auto; padding: 0 20px; line-height: 1.6; }
header { border-bottom: 1px solid #2d333f; padding-bottom: 16px; margin-bottom: 32px; display: flex; justify-content: space-between; }
nav a { color: var(--accent); text-decoration: none; margin-left: 18px; }
.card { background: var(--card); padding: 20px 24px; border-radius: 8px; margin-bottom: 20px; border: 1px solid #262b36; }
footer { margin-top: 48px; font-size: 0.85em; color: #64748b; border-top: 1px solid #2d333f; padding-top: 16px; }