:root { --bg: #fbfbf9; --fg: #1d232a; --muted: #5b6570; --rule: #dfe2e0; --accent: #1f5f8b; --panel: #ffffff; }
@media (prefers-color-scheme: dark) { :root { --bg: #14181c; --fg: #e8eaec; --muted: #a3abb3; --rule: #2c333a; --accent: #7fb4dd; --panel: #1b2026; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.7 "Helvetica Neue", Arial, "Hiragino Sans", sans-serif; }
.wrap { max-width: 760px; margin: 0 auto; padding-block: 40px 64px; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
header { border-bottom: 1px solid var(--rule); padding-bottom: 16px; margin-bottom: 32px; }
header .org { font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
header h1 { font-size: 28px; line-height: 1.25; margin: 6px 0 0; text-wrap: balance; }
nav { margin-top: 12px; display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; }
a { color: var(--accent); }
h2 { font-size: 19px; margin: 36px 0 8px; }
h3 { font-size: 16px; margin: 24px 0 4px; }
p, li { max-width: 68ch; }
ul { padding-left: 1.2em; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-top: 1px solid var(--rule); }
th { width: 34%; color: var(--muted); font-weight: 600; }
.note { background: var(--panel); border: 1px solid var(--rule); border-radius: 6px; padding: 14px 16px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--rule); font-size: 13px; color: var(--muted); }