:root { --bg: #f6f7fb; --card: #fff; --text: #1b1f33; --muted: #5d6384; --line: #e2e5f1; --accent: #6d4aff; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1220; --card: #181c30; --text: #e8eaf6; --muted: #9aa0c0; --line: #2a2f4d; --accent: #8b6cff; }
}
* { box-sizing: border-box; margin: 0; }
body { background: var(--bg); color: var(--text); font-family: system-ui, sans-serif; line-height: 1.7; }
a { color: var(--accent); }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 16px; }
header a { font-weight: 800; text-decoration: none; }
main { background: var(--card); border: 1px solid var(--line); border-radius: 14px; margin-top: 8px; padding: 24px; }
h1 { margin-bottom: 12px; }
h2 { margin: 20px 0 6px; font-size: 1.1rem; }
p, li { color: var(--muted); }
ul { padding-left: 20px; }
footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 24px 16px; }
header .logo { display: inline-flex; background: #fff; border-radius: 8px; padding: 4px 8px; }
header .logo img { height: 36px; width: auto; display: block; }