:root { color-scheme: light; --ink: #1d1d1f; --secondary: #424245; --muted: #6e6e73; --rule: #d2d2d7; --link: #06c; font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif; }
* { box-sizing: border-box; }
html { background: #fff; }
body { margin: 0; background: #fff; color: var(--ink); -webkit-font-smoothing: antialiased; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.document { width: min(100%, 760px); margin: 0 auto; padding: 56px 28px 80px; }
.wordmark { margin: 0 0 42px; color: var(--ink); font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.wordmark a { color: inherit; }
header { padding-bottom: 31px; border-bottom: 1px solid var(--rule); }
h1 { max-width: 620px; margin: 0; font-size: clamp(32px, 7vw, 44px); font-weight: 600; letter-spacing: -0.035em; line-height: 1.08; }
.updated { margin: 16px 0 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
.intro { margin: 25px 0 0; color: var(--secondary); font-size: 17px; line-height: 1.6; }
nav { margin: 32px 0 0; padding: 19px 0 0; border-top: 1px solid var(--rule); }
nav strong { display: block; margin-bottom: 10px; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; }
nav a { display: block; width: fit-content; margin: 6px 0; font-size: 15px; line-height: 1.45; }
main { padding-top: 13px; }
section { padding: 32px 0; border-bottom: 1px solid var(--rule); scroll-margin-top: 18px; }
h2 { margin: 0 0 14px; font-size: 21px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.25; }
h3 { margin: 22px 0 8px; font-size: 16px; font-weight: 600; line-height: 1.4; }
p, li { color: var(--secondary); font-size: 16px; line-height: 1.62; }
p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0 0 14px; padding-left: 22px; }
li + li { margin-top: 7px; }
.callout { margin-top: 18px; padding: 16px 18px; border-left: 3px solid var(--ink); background: #f5f5f7; color: var(--secondary); font-size: 15px; line-height: 1.58; }
.callout strong { color: var(--ink); }
footer { padding-top: 28px; color: var(--muted); font-size: 13px; line-height: 1.55; }
@media (min-width: 820px) { .document { padding-left: 0; padding-right: 0; } }
@media (max-width: 480px) { .document { padding: 36px 22px 60px; } .wordmark { margin-bottom: 34px; } p, li { font-size: 15px; } }