:root { --bg: #f4f5f7; --card: #fcfcfd; --ink: #161b22; --muted: #57606a; --line: #e1e4e8; --brand: #15803d; color-scheme: light; }
@media (prefers-color-scheme: dark) { :root { --bg: #0e1116; --card: #161b22; --ink: #e6edf3; --muted: #9da7b3; --line: #262c36; --brand: #3fb950; color-scheme: dark; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 "Inter", "Segoe UI", system-ui, -apple-system, sans-serif; }
header, main, footer { max-width: 780px; margin: 0 auto; padding-inline: max(16px, env(safe-area-inset-left, 0px)); }
header { display: flex; align-items: center; gap: 12px; padding-block: 24px; }
header img { width: 40px; height: 40px; border-radius: 10px; }
header a { color: var(--ink); text-decoration: none; font-weight: 650; font-size: 18px; }
nav { margin-left: auto; display: flex; gap: 16px; font-size: 14px; }
nav a { color: var(--muted); font-weight: 500; }
main { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 32px max(20px, 4vw); margin-bottom: 24px; }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 4px; letter-spacing: -0.01em; }
h2 { font-size: 19px; margin: 32px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 4px; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
a { color: var(--brand); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0 16px; }
th, td { text-align: left; border-bottom: 1px solid var(--line); padding: 8px 6px; vertical-align: top; }
.box { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin: 16px 0; }
footer { color: var(--muted); font-size: 13px; padding-bottom: 40px; }
@media (max-width: 560px) { nav { display: none; } }