@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{--bg:#100e0d;--panel:#171413;--fg:#eae7e4;--dim:#8d8781;--rule:#2a2523;--hov:#211c1a;--red:#e05343}
:root[data-theme="light"]{--bg:#faf8f6;--panel:#f2efec;--fg:#1a1716;--dim:#6d6661;--rule:#e2dcd7;--hov:#e8e3de;--red:#c23a28}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]){--bg:#faf8f6;--panel:#f2efec;--fg:#1a1716;--dim:#6d6661;--rule:#e2dcd7;--hov:#e8e3de;--red:#c23a28}}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--fg);font-family:'Instrument Sans',system-ui,-apple-system,sans-serif;font-size:15px;-webkit-font-smoothing:antialiased;min-height:100vh;display:grid;grid-template-columns:232px 1fr}
a{color:inherit;text-decoration:none}
.lk{border-bottom:1px solid var(--rule)}
.lk:hover{color:var(--red);border-bottom-color:var(--red)}
.mono{font-family:'IBM Plex Mono',ui-monospace,Menlo,monospace}

nav{background:var(--panel);border-right:1px solid var(--rule);padding:30px 0;display:flex;flex-direction:column;gap:28px;position:sticky;top:0;height:100vh;align-self:start}
.brand{padding:0 24px}
.brand b{font-family:'IBM Plex Mono',monospace;font-size:17px;font-weight:500;color:var(--red);display:block}
.brand span{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--dim);margin-top:3px;display:block}
.nvlist{display:flex;flex-direction:column;gap:1px;padding:0 12px}
.nv{padding:7px 12px;font-size:14px;color:var(--dim);display:flex;align-items:center;gap:9px;transition:background .12s}
.nv:hover{background:var(--hov)}
.nv.on{background:var(--hov);color:var(--red);font-weight:500}
.nv .n{font-family:'IBM Plex Mono',monospace;font-size:11px;opacity:.55}
.grp{padding:16px 12px 5px;font-family:'IBM Plex Mono',monospace;font-size:10.5px;letter-spacing:.06em;color:var(--dim);text-transform:uppercase}
.sub{padding:6px 12px 6px 26px}
.foot{margin-top:auto;padding:0 24px;display:flex;flex-direction:column;gap:14px}
#themeBtn{cursor:pointer;font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--dim);display:flex;align-items:center;gap:7px;background:none;border:0;padding:0;font-weight:400}
#themeBtn i{width:7px;height:7px;background:var(--red);display:inline-block}

main{padding:64px 72px 96px}
.col{max-width:66ch}
h1{font-size:34px;font-weight:600;margin:0;letter-spacing:-.02em}
h1.big{font-size:40px}
h2{font-size:12px;font-family:'IBM Plex Mono',monospace;font-weight:500;color:var(--dim);margin:40px 0 0}
p{line-height:1.7;margin:12px 0 0}
p.lead{font-size:17px;line-height:1.65;margin-top:30px}
.kicker{margin:8px 0 0;font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--dim)}
.sub2{margin:14px 0 0;color:var(--dim);font-size:16px}
.rows{margin-top:16px;display:flex;flex-direction:column}
.rows>div{padding:11px 0;border-bottom:1px solid var(--rule)}
.rows.mach>div{padding:15px 0}
.rows.mach b{font-weight:500;display:block}
.rows.mach em{color:var(--dim);margin-top:4px;line-height:1.6;font-style:normal;display:block}
.spec{margin-top:16px;font-family:'IBM Plex Mono',monospace;font-size:13px;display:grid;grid-template-columns:22ch 1fr;gap:9px 0}
.spec .k{color:var(--dim)}
.no{color:var(--red)}
.note{margin-top:18px;color:var(--dim);font-size:13.5px;line-height:1.65}

@media(max-width:820px){
 body{grid-template-columns:1fr}
 nav{border-right:0;border-bottom:1px solid var(--rule);padding:20px 0;gap:16px;position:static;height:auto}
 .nvlist{flex-direction:row;flex-wrap:wrap;overflow-x:auto}
 .grp{display:none}
 .sub{padding:7px 12px}
 .foot{margin-top:0;flex-direction:row;justify-content:space-between;align-items:center}
 main{padding:40px 24px 64px}
 h1{font-size:28px}h1.big{font-size:32px}
 .spec{grid-template-columns:1fr;gap:2px 0}
 .spec .k{margin-top:10px}
}