:root {
  --bg: #0b0f19;
  --card: #151d30;
  --accent: #3b82f6;
  --text: #f8fafc;
  --text-dim: #94a3b8;
  --border: #243049;
}
* { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background: var(--bg); color: var(--text); line-height: 1.6; padding-bottom: 3rem; }
header { background: var(--card); border-bottom: 1px solid var(--border); padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
header h1 a { font-size: 1.25rem; font-weight: 700; color: #fff; text-decoration: none; }
header h1 a span { color: var(--accent); }
header nav a { color: var(--text-dim); text-decoration: none; margin-left: 1.2rem; font-size: 0.9rem; font-weight: 500; }
header nav a:hover { color: #fff; }
.container { max-width: 860px; margin: 2.5rem auto; padding: 0 1.5rem; }
.content-box { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 2.5rem; }
h1, h2, h3 { color: #fff; margin-bottom: 1rem; }
h1 { font-size: 2rem; border-bottom: 1px solid var(--border); padding-bottom: 0.75rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.35rem; margin-top: 1.8rem; }
p, ul { color: var(--text-dim); margin-bottom: 1rem; font-size: 0.95rem; }
ul { padding-left: 1.5rem; }
li { margin-bottom: 0.5rem; }
strong { color: #fff; }
code { background: #0b0f19; padding: 0.2rem 0.4rem; border-radius: 4px; border: 1px solid var(--border); font-size: 0.85rem; color: #38bdf8; }
footer { border-top: 1px solid var(--border); margin-top: 3rem; padding-top: 2rem; text-align: center; font-size: 0.85rem; color: var(--text-dim); }
footer a { color: var(--accent); text-decoration: none; margin: 0 0.5rem; }