:root {
  --bg: #07090f;
  --panel: #0d1420;
  --panel-light: #111d2b;
  --cyan: #22d3ee;
  --cyan-soft: #a5f3fc;
  --lime: #a3e635;
  --pink: #f472b6;
  --ink: #e2e8f0;
  --muted: #94a3b8;
  --line: rgba(34, 211, 238, .24);
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(circle at 15% 0%, rgba(34,211,238,.08), transparent 30rem), var(--bg);
  font: 400 1rem/1.75 Inter, ui-sans-serif, system-ui, sans-serif;
}
a { color: var(--cyan-soft); text-decoration-thickness: .1em; text-underline-offset: .18em; }
a:hover, a:focus { color: white; }
.article-shell { max-width: 1120px; margin: 0 auto; padding: 1.25rem 1.25rem 4rem; }
.site-nav { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .7rem 0 2.5rem; }
.brand { color: var(--ink); font-weight: 800; letter-spacing: .04em; text-decoration: none; }
.brand span { color: var(--cyan); }
.nav-link { color: var(--muted); font-size: .9rem; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 18rem; gap: 3rem; align-items: start; }
.article { max-width: 750px; }
.kicker { color: var(--lime); font: 700 .78rem/1.2 ui-monospace, SFMono-Regular, monospace; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { font-family: Orbitron, Inter, sans-serif; line-height: 1.2; letter-spacing: .015em; }
h1 { margin: .7rem 0 1rem; color: white; font-size: clamp(2rem, 5vw, 4.2rem); text-shadow: 0 0 24px rgba(34,211,238,.25); }
h2 { margin: 2.5rem 0 .75rem; color: var(--cyan-soft); font-size: clamp(1.35rem, 3vw, 1.9rem); }
.dek { color: #cbd5e1; font-size: 1.2rem; line-height: 1.55; max-width: 44rem; }
.byline { color: var(--muted); font-size: .9rem; margin: 1.25rem 0 1.5rem; }
.notice { border-left: 3px solid var(--pink); margin: 1.5rem 0 2rem; padding: .85rem 1rem; color: #cbd5e1; background: rgba(244,114,182,.07); font-size: .92rem; }
.diagram { margin: 2rem 0; padding: 1.2rem; border: 1px solid var(--line); border-radius: .8rem; background: linear-gradient(135deg, rgba(34,211,238,.09), rgba(163,230,53,.04)); }
.diagram-title { margin: 0 0 1rem; color: var(--cyan); font: 700 .75rem/1.2 ui-monospace, monospace; letter-spacing: .14em; text-transform: uppercase; }
.nodes { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem; }
.node { padding: .6rem .75rem; border: 1px solid rgba(165,243,252,.35); border-radius: .45rem; background: rgba(7,9,15,.72); color: white; font-weight: 650; }
.arrow { color: var(--lime); font-size: 1.2rem; }
.article p { margin: 1.15rem 0; }
.sources { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.sources h2 { margin-top: 0; font-size: 1.15rem; }
.sources ul { padding-left: 1.15rem; }
.side-card { position: sticky; top: 1.5rem; padding: 1.15rem; border: 1px solid rgba(34,211,238,.18); border-radius: .8rem; background: rgba(13,20,32,.8); }
.side-card h2 { margin: 0 0 .75rem; font-size: 1rem; }
.side-card ul { margin: 0; padding-left: 1.1rem; color: var(--muted); font-size: .9rem; }
.footer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid rgba(148,163,184,.16); color: var(--muted); font-size: .85rem; }
@media (max-width: 760px) {
  .article-layout { display: block; }
  .side-card { position: static; margin-top: 2.5rem; }
  .site-nav { padding-bottom: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }