:root { --bg: #0B0C0E; --sf: #15171B; --ln: #2A2E35; --tx: #F2F3EF; --mu: #A3A9AE; --ac: #C8F560; --warn: #FFA24C; color-scheme: dark; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--tx); font: 400 16px/1.65 Geist, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
.top { position: sticky; top: 0; z-index: 2; background: rgba(11, 12, 14, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--ln); padding-top: env(safe-area-inset-top, 0px); }
.top-in, main, footer { max-width: 760px; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 8px; color: var(--tx); text-decoration: none; }
.logo .m { width: 22px; height: 27px; } .logo .w { width: 74px; height: 27px; }
.seg { display: inline-flex; background: var(--sf); border: 1px solid var(--ln); border-radius: 999px; padding: 3px; }
.seg button { border: 0; background: transparent; color: var(--mu); font: 600 13px 'Geist Mono', ui-monospace, monospace; height: 36px; min-width: 44px; border-radius: 999px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--tx); color: var(--bg); }
main { padding-block: 40px 24px; }
.kicker { font: 600 12px 'Geist Mono', ui-monospace, monospace; text-transform: uppercase; letter-spacing: .1em; color: var(--ac); margin: 0 0 10px; }
h1 { font: 800 clamp(40px, 9vw, 64px)/.95 'Big Shoulders Display', Impact, sans-serif; text-transform: uppercase; margin: 0 0 14px; letter-spacing: .01em; }
.meta { color: var(--mu); font-size: 14px; margin: 0 0 28px; }
.lead { font-size: 18px; color: var(--tx); margin: 0 0 28px; }
.box { background: var(--sf); border: 1px solid var(--ln); border-left: 3px solid var(--ac); border-radius: 14px; padding: 16px 18px; margin: 0 0 28px; }
.box.warn { border-left-color: var(--warn); }
.box p { margin: 0; }
nav.toc { margin: 0 0 36px; }
nav.toc ol { margin: 0; padding-left: 22px; columns: 2 240px; column-gap: 28px; color: var(--mu); font-size: 15px; }
nav.toc a { color: var(--tx); text-decoration: none; } nav.toc a:hover { text-decoration: underline; }
h2 { font: 700 21px/1.3 Geist, sans-serif; letter-spacing: -.01em; margin: 40px 0 10px; scroll-margin-top: 80px; }
h2 .n { font: 600 14px 'Geist Mono', monospace; color: var(--ac); margin-right: 10px; }
p, li { color: #D9DBD5; }
ul { padding-left: 22px; } li { margin: 6px 0; }
b, strong { color: var(--tx); }
a { color: var(--ac); }
.todo { background: rgba(255, 162, 76, .16); color: var(--warn); border-radius: 6px; padding: 0 5px; }
footer { border-top: 1px solid var(--ln); padding-block: 24px max(32px, env(safe-area-inset-bottom, 0px)); color: var(--mu); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 18px; }
footer a { color: var(--tx); }
:focus-visible { outline: 2px solid var(--ac); outline-offset: 2px; }
[hidden] { display: none !important; }