:root { color-scheme: light dark; --background: #f5f6f8; --surface: #fff; --text: #171b22; --muted: #525c6c; --accent: #0065cb; --border: #dce1e8; }
@media (prefers-color-scheme: dark) { :root { --background: #0c0f14; --surface: #171c24; --text: #f4f6fa; --muted: #b0bac9; --accent: #70b7ff; --border: #303947; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--background); color: var(--text); font: 1rem/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
header, main, footer { width: min(100% - 40px, 720px); margin-inline: auto; }
header { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 28px; }
.brand { font-weight: 800; font-size: 1.35rem; text-decoration: none; color: var(--text); }
.brand span { color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
a { color: var(--accent); text-underline-offset: 4px; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 3px; }
main { padding: 28px 0 40px; }
h1 { font-size: clamp(2rem, 6vw, 2.75rem); line-height: 1.15; letter-spacing: -.04em; margin: 0 0 18px; }
h2 { font-size: 1.15rem; line-height: 1.4; margin-top: 30px; }
p { margin-block: 12px; }
.intro, .updated { color: var(--muted); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 24px; margin-top: 28px; }
.card h2 { margin-top: 0; }
.contact { font-weight: 600; font-size: 1.1rem; }
footer { border-top: 1px solid var(--border); padding: 24px 0 36px; color: var(--muted); font-size: .9rem; }
.skip { position: absolute; left: 20px; top: -100px; background: var(--surface); padding: 8px; }
.skip:focus { top: 8px; }
@media (max-width: 420px) { header { align-items: flex-start; } nav { gap: 6px 14px; } .card { padding: 20px; } }