@property --t {
  syntax: '<number>';
  inherits: false;
  initial-value: 0;
}

:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --fg: #1b1b1f;
  --muted: #6b6b76;
  --dot: #cfcfd6;
  --accent: #4f46e5;
  --surface: rgba(255, 255, 255, 0.72);
  --line: rgba(27, 27, 31, 0.12);
  --gap: 28px;
  --dot-d: 3px;
  --lens-r: 80px;
  --lens-k: 0.3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0d10;
    --fg: #e8e8ec;
    --muted: #8b8b98;
    --dot: #2a2d36;
    --accent: #22d3ee;
    --surface: rgba(255, 255, 255, 0.04);
    --line: rgba(255, 255, 255, 0.10);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-content: center;
  gap: 0.5rem;
  padding: 2rem;
  text-align: center;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.25rem);
  letter-spacing: -0.02em;
}

p {
  margin: 0;
  color: var(--muted);
}

/* --- info card ------------------------------------------------------------
   .card sets no width, max-width or margin of its own: it fills whatever
   grid cell or flex slot a parent gives it. .cards below is only a
   convenience wrapper — the card works in any layout without it. */

.card {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  column-gap: 0.75rem;
  row-gap: 0.85rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  backdrop-filter: blur(6px);
  text-align: left;
  transition: border-color 180ms ease;
}

.card:hover {
  border-color: color-mix(in oklab, var(--line), var(--accent) 55%);
}

.card-icon {
  grid-column: 1;
  grid-row: 1;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0.5rem;
  border-radius: 10px;
  background: color-mix(in oklab, transparent, var(--accent) 12%);
  color: var(--accent);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card-header {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.card-body {
  grid-column: 1 / -1;
  align-self: start;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  width: min(60rem, 100vw - 4rem);
  margin-top: 1.5rem;
}

.divider-cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  width: min(60rem, 100vw - 4rem);
  margin-top: 1.5rem;
}


.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.dot-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  contain: layout paint;
}

.dot-grid span {
  position: absolute;
  width: var(--dot-d);
  height: var(--dot-d);
  margin: calc(var(--dot-d) / -2) 0 0 calc(var(--dot-d) / -2);
  border-radius: 50%;
  background: var(--dot);
  background: color-mix(in oklab, var(--dot), var(--accent) calc(var(--t) * 100%));
}