:root { color-scheme: dark; --bg:#03080d; --panel:#071119; --line:#174352; --cyan:#49d4ff; --gold:#d9ad63; --text:#eef4f6; --muted:#9bb0ba; }
* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body { min-height: 100vh; margin: 0; color: var(--text); background: radial-gradient(circle at 82% 8%, rgba(46,178,225,.12), transparent 32rem), linear-gradient(145deg, #02070b, #071018 55%, #05090d); font-family: Inter, Arial, sans-serif; line-height: 1.65; }
a { color: inherit; }
.skip-link { position: fixed; z-index: 10; left: 1rem; top: -5rem; padding: .8rem 1rem; color: #001018; background: var(--cyan); }
.skip-link:focus { top: 1rem; }
.shell { width: min(76rem, calc(100% - 2rem)); margin-inline: auto; }
.topbar { border-bottom: 1px solid rgba(217,173,99,.25); background: rgba(3,8,13,.88); }
.topbar .shell { min-height: 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { text-decoration: none; font-weight: 900; letter-spacing: .08em; }
.brand small { display: block; color: var(--gold); font: 600 .58rem/1.2 Consolas, monospace; letter-spacing: .16em; }
.portal-link { color: var(--cyan); font: 700 .72rem/1.2 Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }
.hero { padding: clamp(4rem, 10vw, 8rem) 0 clamp(2.5rem, 7vw, 5rem); border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 1rem; color: var(--cyan); font: 700 .72rem/1.2 Consolas, monospace; letter-spacing: .18em; text-transform: uppercase; }
h1 { max-width: 17ch; margin: 0; font-size: clamp(2.8rem, 8vw, 6.5rem); line-height: .95; letter-spacing: -.055em; }
.lead { max-width: 56rem; margin: 1.8rem 0 0; color: #c1d0d6; font-size: clamp(1.05rem, 2vw, 1.35rem); }
.content { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(17rem, .65fr); gap: clamp(2rem, 6vw, 5rem); padding: clamp(2.5rem, 7vw, 5rem) 0; }
.copy, .aside-card { padding: clamp(1.4rem, 4vw, 2.5rem); background: rgba(7,17,25,.82); border: 1px solid var(--line); }
.copy h2, .aside-card h2 { margin: 0 0 1rem; font-size: clamp(1.5rem, 4vw, 2.4rem); }
.copy p { color: var(--muted); }
.keywords, .links { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1.4rem 0 0; padding: 0; list-style: none; }
.keywords li { padding: .45rem .65rem; color: #bdeeff; border: 1px solid rgba(73,212,255,.3); font: 600 .7rem/1.3 Consolas, monospace; }
.links { display: grid; }
.links a { display: block; padding: .75rem .85rem; color: #dceaf0; text-decoration: none; border-left: 2px solid var(--gold); background: rgba(255,255,255,.025); }
.links a:hover, .links a:focus-visible { color: #fff; background: rgba(73,212,255,.08); outline: 1px solid var(--cyan); }
.footer { padding: 2rem 0 3rem; color: #718891; border-top: 1px solid var(--line); font: .68rem/1.6 Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }
@media (max-width: 48rem) { .content { grid-template-columns: 1fr; } .topbar .shell { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: .8rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }