:root { color-scheme: dark; --ink:#0b1020; --surface:#141a2d; --surface-2:#1b2238; --ivory:#f4efe5; --muted:#b9b4ab; --copper:#cf8c58; --teal:#55b8b1; --violet:#9988dd; --line:rgba(244,239,229,.14); }
* { box-sizing: border-box; }
html { background: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; }
body { margin: 0; color: var(--ivory); background: radial-gradient(circle at 82% 0%, rgba(153,136,221,.15), transparent 32rem), var(--ink); line-height: 1.7; }
a { color: var(--teal); text-underline-offset: .2em; }
a:hover { color: #79d2cc; }
.shell { width: min(100% - 2rem, 72rem); margin-inline: auto; }
header { border-bottom: 1px solid var(--line); }
.nav { min-height: 4.75rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { color: var(--ivory); text-decoration: none; font-size: 1.15rem; letter-spacing: .02em; }
.brand span { color: var(--copper); }
nav { display: flex; flex-wrap: wrap; gap: .45rem 1rem; font-size: .9rem; }
nav a { color: var(--muted); text-decoration: none; }
.language { display: flex; align-items: center; gap: .45rem; color: var(--muted); font-size: .78rem; }
.language span { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.language select { max-width: 9rem; padding: .45rem .6rem; border: 1px solid var(--line); border-radius: .55rem; color: var(--ivory); background: var(--surface); font: inherit; }
.draft { margin: 1rem auto 0; padding: .7rem 1rem; border: 1px solid rgba(207,140,88,.5); border-radius: .65rem; color: #f1c7a6; background: rgba(207,140,88,.09); font-size: .9rem; }
main { padding: clamp(3rem, 7vw, 6rem) 0; }
.eyebrow { margin: 0 0 .7rem; color: var(--copper); font-size: .78rem; letter-spacing: .18em; text-transform: uppercase; }
h1 { max-width: 18ch; margin: 0; font-size: clamp(2.5rem, 7vw, 5rem); font-weight: 300; line-height: 1.06; letter-spacing: -.035em; }
.lead { max-width: 46rem; margin: 1.4rem 0 0; color: var(--muted); font-size: 1.12rem; }
.meta { margin-top: 1rem; color: var(--violet); font-size: .9rem; }
.content { display: grid; grid-template-columns: minmax(11rem, 15rem) minmax(0, 46rem); gap: 3rem; margin-top: 3.5rem; }
.toc { position: sticky; top: 1.5rem; align-self: start; padding: 1.1rem; border: 1px solid var(--line); border-radius: .8rem; background: rgba(20,26,45,.8); }
.toc strong { display: block; margin-bottom: .5rem; color: var(--copper); font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; }
.toc a { display: block; padding: .2rem 0; color: var(--muted); text-decoration: none; font-size: .9rem; }
article { min-width: 0; }
section { padding: 0 0 2.2rem; scroll-margin-top: 1rem; }
h2 { margin: 0 0 .8rem; color: var(--ivory); font-size: 1.5rem; line-height: 1.25; }
h3 { margin: 1.4rem 0 .4rem; color: var(--teal); font-size: 1.05rem; }
p, ul, ol { margin: .65rem 0; }
li + li { margin-top: .35rem; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 2rem; }
.card { display: block; padding: 1.35rem; border: 1px solid var(--line); border-radius: .9rem; color: var(--ivory); background: linear-gradient(145deg, rgba(27,34,56,.95), rgba(20,26,45,.8)); text-decoration: none; }
.card small { display: block; margin-top: .45rem; color: var(--muted); }
.action { display: inline-block; margin-top: .9rem; padding: .75rem 1rem; border-radius: .65rem; color: var(--ink); background: var(--teal); font-weight: 700; text-decoration: none; }
.action:hover { color: var(--ink); background: #79d2cc; }
.note { padding: 1rem 1.1rem; border-left: 3px solid var(--teal); background: rgba(85,184,177,.08); }
footer { padding: 2rem 0 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
@media (max-width: 48rem) { .nav { align-items: flex-start; flex-direction: column; padding-block: 1rem; } .content { grid-template-columns: 1fr; gap: 2rem; } .toc { position: static; } .card-grid { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: no-preference) { a { transition: color .18s ease, background-color .18s ease; } }