:root { color-scheme: light dark; --bg: #fafbfd; --fg: #172535; --muted: #45566a; --link: #0954a0; --panel: #eaf0f7; --border: #bac8d8; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 1.05rem/1.7 system-ui, sans-serif; }
a { color: var(--link); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: .15em; }
a:focus-visible { outline: 3px solid var(--link); outline-offset: 4px; }
.skip { position: absolute; left: 1rem; top: -5rem; padding: .5rem; background: var(--bg); }
.skip:focus { top: .5rem; }
header, footer { background: var(--panel); padding: 2rem max(1rem, calc((100% - 76rem) / 2)); }
header h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.2; margin: .3rem 0; overflow-wrap: anywhere; }
header p { max-width: 65ch; }
.eyebrow { color: var(--muted); font-weight: 650; letter-spacing: .06em; text-transform: uppercase; }
.layout { max-width: 78rem; padding: 2rem 1rem; margin: auto; display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: 3rem; }
nav { align-self: start; position: sticky; top: 1rem; }
nav ul { list-style: none; padding: 0; margin-top: .4rem; }
nav li { margin: .45rem 0; }
main { max-width: 57rem; min-width: 0; }
section { margin-bottom: 3rem; scroll-margin-top: 1rem; }
h2 { line-height: 1.3; border-bottom: 1px solid var(--border); padding-bottom: .4rem; }
h3 { line-height: 1.4; }
pre { background: var(--panel); border: 1px solid var(--border); border-radius: .4rem; padding: 1rem; overflow: auto; font-size: .9rem; line-height: 1.6; }
code { font-family: ui-monospace, monospace; overflow-wrap: anywhere; }
pre code { overflow-wrap: normal; }
.note { border-left: .3rem solid var(--link); padding: .7rem 1rem; background: var(--panel); }
li { margin-bottom: .4rem; }
footer { font-size: .95rem; }
@media (max-width: 52rem) { .layout { display: block; } nav { position: static; border-bottom: 1px solid var(--border); margin-bottom: 2rem; } nav ul { columns: 2; } }
@media (max-width: 30rem) { nav ul { columns: 1; } }
@media (prefers-color-scheme: dark) { :root { --bg: #111c28; --fg: #e6edf6; --muted: #b9c8db; --link: #8ec7ff; --panel: #1c2c3e; --border: #4b6178; } }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; vertical-align: top; padding: .5rem .7rem; border-bottom: 1px solid var(--border); }
th { background: var(--panel); }