:root {
  --bg: #f7f9fb; --card: #ffffff; --ink: #0f2230; --muted: #4a5b68; --line: #dbe3ea; --accent: #0a6e8a;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b1821; --card: #10222e; --ink: #e8eef2; --muted: #a7b6c1; --line: #24394a; --accent: #5cc8e6; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--card); padding: 8px 12px; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { display: flex; align-items: center; gap: 12px; padding-top: 28px; padding-bottom: 8px; }
header a.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.15rem; }
header img { width: 36px; height: 36px; }
.logo-light { display: none; }
@media (prefers-color-scheme: light) { .logo-dark { display: none; } .logo-light { display: inline; } }
main { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px 24px 32px; margin-top: 16px; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 1.2rem; margin: 28px 0 6px; }
h3 { font-size: 1rem; margin: 18px 0 4px; }
.meta { color: var(--muted); margin: 0 0 20px; font-size: .95rem; }
li { margin: 4px 0; }
footer { color: var(--muted); font-size: .85rem; padding-top: 20px; padding-bottom: 40px; display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: center; }
footer a { color: var(--muted); }