:root { --bg: #EEF3FF; --surface: #FFFFFF; --text: #1A1F2B; --muted: #5B6475; --accent: #3355FF; --border: #D9DEE8; }
@media (prefers-color-scheme: dark) { :root { --bg: #0B0F14; --surface: #151B24; --text: #E8ECF3; --muted: #A3ADBF; --accent: #8FA4FF; --border: #263040; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
header.site { display: flex; justify-content: space-between; align-items: center; gap: 12px; max-width: 760px; margin: 0 auto; padding: 20px 20px 0; flex-wrap: wrap; }
header.site a.brand { font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; letter-spacing: -0.3px; }
nav a { margin-left: 14px; }
a { color: var(--accent); }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.5px; margin: 8px 0 12px; }
h2 { font-size: 22px; margin: 32px 0 8px; }
h3 { font-size: 18px; margin: 22px 0 6px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 20px 22px; margin: 18px 0; }
blockquote { margin: 16px 0; padding: 12px 16px; border-left: 4px solid var(--accent); background: var(--surface); border-radius: 0 12px 12px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
footer { color: var(--muted); font-size: 14px; border-top: 1px solid var(--border); margin-top: 40px; padding-top: 16px; }
.muted { color: var(--muted); }
.button { display: inline-block; background: var(--accent); color: #fff; padding: 10px 18px; border-radius: 999px; text-decoration: none; font-weight: 700; }