:root {
  --void: #07080a;
  --charcoal: #10131a;
  --ivory: #f3f0e8;
  --muted: #9a958c;
  --line: rgba(243, 240, 232, 0.12);
  --cobalt: #2457e6;
  --sans: "Schibsted Grotesk", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  background: var(--void);
  color: var(--ivory);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ol {
  list-style: none;
}

.hub-frame {
  position: fixed;
  inset: 10px;
  border: 1px solid var(--line);
  pointer-events: none;
  z-index: 10;
}

.hub-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: calc(10px + 1.25rem) var(--pad) 1.5rem;
  border-bottom: 1px solid var(--line);
}

.hub-brand img {
  display: block;
  height: 48px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
}

.hub-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.hub-main {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.5rem var(--pad) 4rem;
}

.hub-kicker {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.hub-intro h1 {
  font-size: clamp(1.85rem, 4.5vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin-bottom: 1rem;
}

.hub-lede {
  color: rgba(243, 240, 232, 0.65);
  font-size: 1.05rem;
  max-width: 52ch;
  margin-bottom: 2.75rem;
}

.demo-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.demo-card {
  display: block;
  padding: 1.35rem 1.5rem 1.4rem;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(16, 19, 26, 0.9), rgba(7, 8, 10, 0.95));
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
  cursor: pointer;
}

.demo-card:hover,
.demo-card:focus-visible {
  border-color: rgba(36, 87, 230, 0.55);
  background: linear-gradient(135deg, rgba(22, 28, 40, 0.95), rgba(7, 8, 10, 1));
  transform: translateX(6px);
  outline: none;
}

.demo-card:focus-visible {
  box-shadow: 0 0 0 2px var(--cobalt);
}

.demo-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cobalt);
  margin-bottom: 0.5rem;
}

.demo-title {
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.55rem;
  line-height: 1.2;
}

.demo-desc {
  font-size: 0.92rem;
  color: rgba(243, 240, 232, 0.58);
  max-width: 62ch;
  margin-bottom: 0.85rem;
}

.demo-cta {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ivory);
  opacity: 0.75;
}

.demo-card:hover .demo-cta {
  opacity: 1;
  color: #7a9bff;
}

.hub-footer {
  padding: 2rem var(--pad) 2.5rem;
  border-top: 1px solid var(--line);
  text-align: center;
}

.hub-footer p {
  font-size: 0.85rem;
  color: var(--muted);
}

.hub-note {
  margin-top: 0.65rem;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  opacity: 0.7;
}

.hub-note code {
  font-size: inherit;
  color: rgba(243, 240, 232, 0.55);
}

@media (max-width: 640px) {
  .hub-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .demo-card:hover {
    transform: none;
  }
}