:root {
  color-scheme: dark;
  --bg: #0d1018;
  --bg-card: #161b27;
  --bg-card-hover: #1d2333;
  --fg: #e6e9f2;
  --fg-dim: #a4adc4;
  --accent: #4ea1ff;
  --accent-soft: #1e3a5f;
  --line: #2a3140;
  --eyebrow-live: #5dd2a8;
  --eyebrow-soon: #c2a04e;
  --eyebrow-later: #8a92a8;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(13, 16, 24, 0.85);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.brand {
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.logo { color: var(--accent); }
.topnav { display: flex; gap: 1.25rem; }
.topnav a { color: var(--fg-dim); text-decoration: none; font-size: 0.95rem; }
.topnav a:hover { color: var(--fg); }
.topnav a.active { color: var(--accent); }

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.hero .lede {
  color: var(--fg-dim);
  font-size: 1.1rem;
  max-width: 60ch;
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.4rem 1.4rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  color: var(--fg);
  transition: background 0.18s, transform 0.18s, border-color 0.18s;
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-soft);
  transform: translateY(-1px);
}
.card h2 {
  margin: 0;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.95rem;
}
.card-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--eyebrow-live);
}
.card-cta {
  margin-top: auto;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 500;
}

.card.disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.card.disabled:hover {
  transform: none;
  background: var(--bg-card);
  border-color: var(--line);
}
.card.disabled .card-eyebrow { color: var(--eyebrow-soon); }
.card.disabled:nth-of-type(n+4) .card-eyebrow { color: var(--eyebrow-later); }

.foot {
  margin-top: 3.5rem;
  color: var(--fg-dim);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}