:root { --ink: #1d2433; --muted: #5d6677; --line: #e4e7ec; --accent: #2457d6; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--ink); background: #fff; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top { display: flex; justify-content: space-between; align-items: center; max-width: 760px; margin: 0 auto; padding: 20px 24px; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 20px; color: var(--ink); }
.top nav a { margin-left: 20px; font-size: 15px; }
main { max-width: 760px; margin: 0 auto; padding: 32px 24px 48px; }
h1 { font-size: 32px; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
.lead { font-size: 18px; color: var(--muted); }
.meta { color: var(--muted); font-size: 14px; margin-top: 0; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
footer { max-width: 760px; margin: 0 auto; padding: 20px 24px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
footer span { margin-left: auto; }
@media (max-width: 520px) { .top { flex-direction: column; gap: 8px; } .top nav a { margin: 0 10px; } footer span { margin-left: 0; width: 100%; } }