:root {
  color-scheme: dark;
  --bg: #020617;
  --panel: rgba(15, 23, 42, 0.78);
  --panel-strong: #0f172a;
  --line: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --dim: #64748b;
  --cyan: #22d3ee;
  --green: #34d399;
  --amber: #fbbf24;
  --rose: #fb7185;
  --violet: #a78bfa;
}
* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  background:
    linear-gradient(rgba(30, 41, 59, .35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 41, 59, .35) 1px, transparent 1px),
    radial-gradient(circle at 18% 8%, rgba(34, 211, 238, .12), transparent 26rem),
    radial-gradient(circle at 82% 18%, rgba(167, 139, 250, .10), transparent 25rem),
    var(--bg);
  background-size: 40px 40px, 40px 40px, auto, auto, auto;
}
a { color: inherit; }
.shell { width: min(1160px, calc(100vw - 36px)); margin: 0 auto; padding: 28px 0 48px; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0 28px;
}
.brand { color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: -0.03em; }
.navlinks { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.navlinks a, .button {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  padding: 9px 13px;
  text-decoration: none;
  font-size: 13px;
  background: rgba(15, 23, 42, .72);
}
.navlinks a:hover, .button:hover { border-color: var(--cyan); color: var(--text); }
.hero {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(15, 23, 42, .88), rgba(2, 6, 23, .72));
  padding: clamp(28px, 6vw, 64px);
  box-shadow: 0 24px 90px rgba(0,0,0,.35);
}
.eyebrow, .kicker { color: var(--amber); text-transform: uppercase; letter-spacing: .16em; font-size: 12px; }
h1 { max-width: 920px; margin: 12px 0 18px; font-size: clamp(40px, 7vw, 76px); line-height: .95; letter-spacing: -0.07em; }
.lede { max-width: 790px; color: var(--muted); font-size: clamp(16px, 2vw, 20px); line-height: 1.65; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.button.primary { border-color: rgba(34, 211, 238, .8); background: rgba(8, 51, 68, .62); color: var(--text); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 18px 0; }
.card, .panel, .diagram-frame, .status-strip, .repo {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
}
.card { min-height: 230px; padding: 22px; text-decoration: none; display: flex; flex-direction: column; justify-content: flex-end; }
.card h2 { margin: 12px 0 10px; letter-spacing: -0.04em; font-size: 24px; }
.card p, .panel p, .repo p { color: var(--muted); line-height: 1.6; }
.card.cyan { border-color: rgba(34, 211, 238, .45); }
.card.amber { border-color: rgba(251, 191, 36, .45); }
.card.violet { border-color: rgba(167, 139, 250, .45); }
.panel { padding: 28px; margin: 18px 0; }
.panel h2 { margin-top: 0; font-size: 28px; letter-spacing: -0.04em; }
.columns { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.status-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; margin: 18px 0; }
.status-strip div { padding: 18px; background: rgba(2, 6, 23, .45); }
.status-strip strong, .status-strip span { display: block; }
.status-strip span { color: var(--muted); margin-top: 6px; font-size: 13px; }
footer { display: flex; justify-content: space-between; gap: 16px; color: var(--dim); font-size: 13px; padding-top: 18px; }
.diagram-frame { overflow: hidden; margin-top: 18px; }
.diagram-frame iframe { display: block; width: 100%; height: min(78vh, 760px); border: 0; background: var(--bg); }
.breadcrumb { color: var(--muted); margin: 10px 0 18px; }
.breadcrumb a { color: var(--cyan); text-decoration: none; }
.repo-list { display: grid; gap: 14px; margin: 20px 0; }
.repo { padding: 22px; }
.repo h2 { margin: 0 0 8px; }
.repo a { color: var(--cyan); word-break: break-word; }
.code {
  display: block;
  white-space: pre-wrap;
  color: #c4b5fd;
  background: rgba(2, 6, 23, .66);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  overflow-x: auto;
}
@media (max-width: 820px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .grid, .columns, .status-strip { grid-template-columns: 1fr; }
  h1 { font-size: 42px; }
}