:root {
  --bg: #0b0d10;
  --panel: #12161b;
  --line: #222a33;
  --text: #d8e0e8;
  --muted: #8b98a6;
  --accent: #4cc2ff;
  --accent-dim: #1d5c7d;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 16, .92);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
}

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; letter-spacing: .02em; }
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--accent); }
.brand-name .muted { color: var(--muted); font-weight: 400; }

nav { display: flex; gap: 18px; font-size: 14px; }
nav a { color: var(--muted); }
nav a:hover { color: var(--text); }

main { max-width: 860px; margin: 0 auto; padding: 40px 24px 72px; }

.hero { padding-bottom: 12px; }

.eyebrow {
  margin: 0 0 6px;
  font: 600 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 { margin: 0 0 16px; font-size: clamp(30px, 5vw, 44px); line-height: 1.15; letter-spacing: -.01em; }

h2 { margin: 44px 0 14px; font-size: 21px; letter-spacing: -.005em; }
h3 { margin: 0 0 6px; font-size: 16px; }

.lead { font-size: 18px; color: var(--text); }
.note { color: var(--muted); font-size: 15px; }

ul.grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

ul.grid li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
}

ul.grid p { margin: 0; color: var(--muted); font-size: 15px; }

table.facts { width: 100%; border-collapse: collapse; font-size: 15px; }
table.facts th,
table.facts td { text-align: left; vertical-align: top; padding: 12px 0; border-bottom: 1px solid var(--line); }
table.facts th { width: 200px; color: var(--muted); font-weight: 500; padding-right: 20px; }

.page-header { padding-bottom: 8px; }
.updated { color: var(--muted); font-size: 14px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

section ul { padding-left: 20px; }
section li { margin: 6px 0; }

.callout {
  margin: 22px 0;
  padding: 16px 18px;
  border: 1px solid var(--accent-dim);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: rgba(76, 194, 255, .05);
  font-size: 15px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 24px;
  max-width: 860px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 14px;
}

footer p { margin: 4px 0; }

@media (max-width: 640px) {
  table.facts th { width: auto; display: block; padding-bottom: 0; border-bottom: 0; }
  table.facts td { display: block; padding-top: 2px; }
}