:root { --fg: #1d1d1f; --muted: #5f6368; --line: #e3e3e3; --accent: #2f5d62; }
* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--fg); background: #fbfbf8; }
main { max-width: 720px; margin: 0 auto; padding: 56px 24px 40px; }
header a { color: var(--fg); text-decoration: none; font-weight: 700; letter-spacing: .02em; }
h1 { font-size: 2.1rem; line-height: 1.2; margin: 40px 0 12px; }
h2 { font-size: 1.2rem; margin: 36px 0 8px; }
p, li { color: #333; }
.lead { font-size: 1.15rem; color: var(--muted); }
a { color: var(--accent); }
.note { border-left: 3px solid var(--accent); padding: 4px 0 4px 14px; color: var(--muted); }
footer { max-width: 720px; margin: 0 auto; padding: 24px; border-top: 1px solid var(--line); font-size: .9rem; color: var(--muted); }
footer a { margin-right: 16px; }