:root {
  --bg: #ffffff;
  --card: #f5f7fa;
  --ink: #0f1419;
  --muted: #5b6573;
  --line: #e3e7ec;
  --accent: #1d3fd6;
  --radius: 14px;
  --max: 980px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Cabecera */
.top {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px 20px;
}
.brand {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -.01em;
  text-decoration: none;
  color: var(--ink);
}
.brand span { color: var(--accent); }

main { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
section { padding: 72px 0; }

/* Hero */
.hero { padding-top: 56px; }
h1 {
  max-width: 16em;
  min-height: 2.2em;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 6.4vw, 4.4rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 700;
}
.hl { color: var(--accent); font-style: italic; }
#t-rest { visibility: hidden; }
.cursor {
  margin-right: -.5em;
  color: var(--accent);
  font-weight: 400;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Cuenta atrás */
.countdown {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  max-width: 440px;
}
.unit {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 6px 10px;
  text-align: center;
}
.unit span {
  display: block;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 6vw, 2.4rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.unit small {
  display: block;
  margin-top: 2px;
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.launched {
  margin-top: 40px;
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
}

/* Pie */
.foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px 20px 40px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: .85rem;
  color: var(--muted);
}
.foot a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .2s, border-color .2s;
}
.foot a:hover { color: var(--ink); border-color: var(--accent); }

@media (max-width: 640px) {
  h1 { min-height: 3.4em; }
}

@media (max-width: 480px) {
  .countdown { gap: 8px; }
  section { padding: 52px 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .cursor { opacity: 1; }
  html { scroll-behavior: auto; }
}