:root { --bg: #fffaf0; --text: #1f2937; --muted: #4b5563; --brand: #b45309; --card: #ffffff; --line: #e5e7eb; }
@media (prefers-color-scheme: dark) { :root { --bg: #111827; --text: #f3f4f6; --muted: #d1d5db; --brand: #fbbf24; --card: #1f2937; --line: #374151; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header, main, footer { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header { display: flex; align-items: center; gap: 12px; padding-top: 24px; }
header img { width: 56px; height: 56px; border-radius: 50%; }
header a { color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.25rem; }
main { padding-top: 24px; padding-bottom: 48px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 16px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; }
a { color: var(--brand); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 16px 0; }
.code { font-family: ui-monospace, Consolas, monospace; word-break: break-all; font-size: 0.95rem; }
button { background: var(--brand); color: #fff; border: 0; border-radius: 8px; padding: 10px 18px; font: inherit; font-weight: 600; cursor: pointer; transition: opacity 150ms; }
button:hover { opacity: 0.85; }
footer { border-top: 1px solid var(--line); padding-top: 16px; padding-bottom: 32px; color: var(--muted); font-size: 0.9rem; }
footer a { margin-right: 16px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }