:root { --paper: #f6f3ee; --ink: #15120f; --muted: #6f6861; --accent: #f05a2a; --card: #ffffff; --line: #e6e0d8; }
@media (prefers-color-scheme: dark) {
  :root { --paper: #15120f; --ink: #f6f3ee; --muted: #a59d95; --card: #221e1a; --line: #3a342e; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 24px 72px; }
.logo { font-weight: 900; letter-spacing: 0.08em; font-size: 44px; margin: 0; }
.tag { color: var(--muted); margin: 4px 0 32px; font-size: 19px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 24px; margin: 24px 0; }
.button { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 700; padding: 14px 26px; border-radius: 999px; }
.muted { color: var(--muted); }
h1 { font-size: 30px; } h2 { font-size: 21px; margin-top: 32px; }
a { color: var(--accent); }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }
.squares { font-size: 30px; letter-spacing: 4px; }