:root { color-scheme: light; --ink: #0b0b0f; --muted: #6b6b76; --line: #e7e7ec; }
* { box-sizing: border-box; }
body { margin: 0; background: #f6f6f8; color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif; padding: 32px 16px 64px; }
main { max-width: 680px; margin: 0 auto; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
header img { width: 44px; height: 44px; border-radius: 11px; }
header a { color: inherit; text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
h1 { font-size: 28px; letter-spacing: -0.02em; margin: 0 0 6px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 6px; }
p, li { color: #26262e; }
ul, ol { padding-left: 22px; }
.muted { color: var(--muted); }
.card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; margin: 16px 0; }
a { color: var(--ink); }
nav.lang { margin: 8px 0 24px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
footer { margin-top: 48px; font-size: 14px; color: var(--muted); }
footer a { color: var(--muted); margin-right: 14px; }