:root { color-scheme: light dark; --accent: #1d6fe0; --fg: #1a1a1a; --muted: #6b6b6b; --bg: #ffffff; --card: #f6f6f4; }
@media (prefers-color-scheme: dark) { :root { --fg: #ececec; --muted: #9a9a9a; --bg: #121212; --card: #1c1c1e; } }
* { box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
       color: var(--fg); background: var(--bg); margin: 0; line-height: 1.65; }
.wrap { max-width: 720px; margin: 0 auto; padding: 28px 20px 72px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.site { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
              padding-bottom: 16px; border-bottom: 1px solid color-mix(in srgb, var(--fg) 12%, transparent); margin-bottom: 8px; }
header.site .brand { font-weight: 700; letter-spacing: 1px; font-size: 1.1rem; }
header.site nav { margin-left: auto; display: flex; gap: 16px; font-size: 0.95rem; }
h1 { font-size: 1.7rem; margin: 28px 0 4px; }
h2 { font-size: 1.18rem; margin-top: 30px; }
.updated { color: var(--muted); font-size: 0.9rem; margin-top: 0; }
ul { padding-left: 22px; }
.hero { text-align: center; padding: 40px 0 8px; }
.hero h1 { font-size: 2.4rem; letter-spacing: 2px; margin-bottom: 0; }
.hero .sub { color: var(--muted); margin-top: 4px; font-size: 1.05rem; }
.cards { display: grid; gap: 14px; margin-top: 28px; }
.card { background: var(--card); border-radius: 14px; padding: 18px 20px; }
.card h2 { margin-top: 0; }
footer.site { margin-top: 48px; padding-top: 18px; color: var(--muted); font-size: 0.88rem;
              border-top: 1px solid color-mix(in srgb, var(--fg) 12%, transparent); text-align: center; }