:root {
  --white: #FFFFFF; --surface: #F4F4F5; --line: #E4E4E7; --ink: #18181B; --ink2: #3F3F46;
  --muted: #6B6B74; --blue: #2563EB; --blue-soft: #EFF6FF;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--white); color: var(--ink); font: 16px/1.6 "Inter", -apple-system, system-ui, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 40px 16px 64px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
header img { width: 56px; height: 56px; border-radius: 13px; }
header a { color: inherit; text-decoration: none; font: 700 22px/1.2 "Bricolage Grotesque", -apple-system, sans-serif; }
h1 { font: 700 32px/1.15 "Bricolage Grotesque", -apple-system, sans-serif; letter-spacing: -0.5px; margin: 0 0 6px; }
h2 { font-size: 17px; margin: 28px 0 6px; }
p, li { color: var(--ink2); }
.meta { color: var(--muted); font-size: 13px; margin: 0 0 24px; }
.card { background: var(--surface); border-radius: 20px; padding: 18px 20px; margin: 16px 0; }
.card p { margin: 4px 0; }
a { color: var(--blue); }
nav { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
nav a { background: var(--surface); color: var(--ink); text-decoration: none; padding: 10px 18px; border-radius: 999px; font-weight: 600; font-size: 15px; }
footer { margin-top: 48px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); padding-top: 16px; }