/* the site's own pages: the landing page and the legal pages, plain reading pages in light and dark */
:root { color-scheme: light dark; --text: #1f2328; --dim: #59636e; --bg: #fff; --accent: #0969da; --line: #d1d9e0; }
@media (prefers-color-scheme: dark) { :root { --text: #e6edf3; --dim: #9198a1; --bg: #0d1117; --accent: #4493f8; --line: #3d444d; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 28px; margin: 0 0 4px; }
h2 { font-size: 19px; margin: 32px 0 8px; padding-bottom: 4px; border-bottom: 1px solid var(--line); }
.dim { color: var(--dim); }
a { color: var(--accent); }
nav { margin-bottom: 24px; font-size: 14px; }
li { margin: 4px 0; }
.hero { padding: 24px 0 8px; }
.hero h1 { font-size: 34px; line-height: 1.2; margin-bottom: 12px; }
.lead { font-size: 18px; color: var(--dim); margin: 0 0 24px; }
.open { display: inline-block; padding: 10px 20px; border-radius: 8px; background: var(--accent); color: #fff; font-weight: 600; text-decoration: none; }
.open:hover { filter: brightness(1.08); }
.studies { list-style: none; padding: 0; }
.studies li { margin: 8px 0; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; }