:root { color-scheme: dark; --dim: rgba(245,245,247,.66); --faint: rgba(245,245,247,.42); --line: rgba(255,255,255,.1); }
* { box-sizing: border-box; margin: 0; }
body { background: #000; color: #f5f5f7; font: 17px/1.62 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "Segoe UI", system-ui, sans-serif; letter-spacing: -0.011em; -webkit-font-smoothing: antialiased; }
main { max-width: 760px; margin: 0 auto; padding: 96px 24px 120px; }
a { color: inherit; text-underline-offset: 3px; }
.back { font-size: 14px; color: var(--dim); text-decoration: none; }
.back:hover { color: #fff; }
h1 { font-size: clamp(38px, 7vw, 60px); line-height: 1.05; letter-spacing: -0.045em; font-weight: 700; margin: 22px 0 10px; }
.updated { color: var(--faint); font-size: 14px; margin-bottom: 28px; }
.lead { font-size: 19px; color: #dcdce0; }
h2 { font-size: 23px; letter-spacing: -0.028em; margin: 44px 0 10px; }
h3 { font-size: 17px; margin: 22px 0 6px; letter-spacing: -0.02em; }
p, li { color: var(--dim); }
p + p { margin-top: 12px; }
ul { padding-left: 22px; display: grid; gap: 8px; margin-top: 8px; }
li b, p b { color: #f5f5f7; font-weight: 600; }
code { font: 13.5px ui-monospace, "SF Mono", Menlo, monospace; background: rgba(255,255,255,.08); padding: 2px 6px; border-radius: 6px; color: #f5f5f7; }
.box { border: 1px solid var(--line); border-radius: 16px; padding: 18px 22px; background: #0b0b0c; margin-top: 16px; }
.box p, .box li { color: #d0d0d5; }
nav.toc { margin: 24px 0 0; padding: 18px 22px; border: 1px solid var(--line); border-radius: 16px; }
nav.toc ol { padding-left: 24px; columns: 2; column-gap: 28px; font-size: 15px; }
nav.toc li { break-inside: avoid; margin-bottom: 6px; }
nav.toc a { color: var(--dim); text-decoration: none; }
nav.toc a:hover { color: #fff; }
@media (max-width: 560px) { nav.toc ol { columns: 1; } main { padding-top: 80px; } }
footer { margin-top: 72px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 14px; color: var(--faint); display: flex; gap: 18px; flex-wrap: wrap; }
footer a { color: var(--dim); }