:root {
  --bg: #f6f7f4;
  --fg: #1c2321;
  --muted: #5d6763;
  --line: rgba(28, 35, 33, .09);
  --accent: #0f766e;
  --card: rgba(255, 255, 255, .78);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1413;
    --fg: #e6ebe9;
    --muted: #93a09b;
    --line: rgba(230, 235, 233, .07);
    --accent: #5eead4;
    --card: rgba(20, 28, 27, .8);
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  place-items: center;
  padding: 16px;
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--fg);
  background-color: var(--bg);
  background-image: url("/contours.svg");
  background-size: max(1100px, 120vmax);
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
}
.card {
  width: 100%;
  max-width: 460px;
  padding: 40px 36px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  backdrop-filter: blur(6px);
}
.eyebrow {
  margin: 0 0 18px;
  font: 500 12px/1 ui-monospace, "SF Mono", Menlo, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
}
h1 { margin: 0; font-size: 30px; font-weight: 650; letter-spacing: -.01em; }
.lead { margin: 4px 0 18px; color: var(--muted); font-size: 17px; }
.body { margin: 0 0 26px; }
.links { display: flex; gap: 10px; flex-wrap: wrap; }
.links a {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--fg);
  text-decoration: none;
  font-size: 14px;
  transition: border-color .15s, color .15s;
}
.links a:hover, .links a:focus-visible { border-color: var(--accent); color: var(--accent); outline: none; }
footer {
  padding: 16px 0 4px;
  font: 12px ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--muted);
}
h1 + .body { margin-top: 8px; }