:root {
  color-scheme: dark;
  --bg: #05070d;
  --panel: #101622;
  --line: #334052;
  --text: #f1f6ff;
  --muted: #9aa9bd;
  --cyan: #25d9ff;
  --gold: #ffd24a;
  --pink: #ff4fb6;
  --green: #57f287;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(255, 210, 74, 0.06), transparent 26%),
    repeating-linear-gradient(90deg, rgba(37, 217, 255, 0.035) 0 1px, transparent 1px 42px),
    repeating-linear-gradient(0deg, rgba(255, 79, 182, 0.025) 0 1px, transparent 1px 46px),
    var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.landing-shell {
  display: grid;
  align-content: center;
  gap: clamp(22px, 4vw, 42px);
  width: min(980px, calc(100vw - 28px));
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 52px) 0;
}

.hero {
  display: grid;
  gap: 12px;
  text-align: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--gold);
  font-weight: 900;
}

.mark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gold);
  background: linear-gradient(135deg, #fff07d, #ff9e44 54%, var(--pink));
  box-shadow: 0 0 18px rgba(255, 210, 74, 0.46);
}

h1,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.1rem, 7vw, 5rem);
  line-height: 0.95;
}

p {
  color: var(--muted);
  font-size: clamp(0.95rem, 2.4vw, 1.15rem);
}

.versions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.version-card {
  display: grid;
  gap: 10px;
  min-height: 178px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(37, 217, 255, 0.12), transparent 54%),
    rgba(16, 22, 34, 0.9);
  color: var(--text);
  text-decoration: none;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.version-card:hover,
.version-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 210, 74, 0.78);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.36), 0 0 0 3px rgba(255, 210, 74, 0.12);
  outline: none;
}

.version-card.next {
  background:
    linear-gradient(135deg, rgba(255, 79, 182, 0.14), transparent 50%),
    linear-gradient(315deg, rgba(87, 242, 135, 0.1), transparent 55%),
    rgba(16, 22, 34, 0.9);
}

.version-card.neon {
  background:
    radial-gradient(circle at 72% 22%, rgba(255, 233, 74, 0.18), transparent 34%),
    linear-gradient(135deg, rgba(32, 231, 255, 0.22), transparent 48%),
    linear-gradient(315deg, rgba(255, 47, 179, 0.18), transparent 50%),
    rgba(5, 8, 18, 0.95);
  border-color: rgba(32, 231, 255, 0.45);
}

.version-label {
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.version-card strong {
  font-size: clamp(1.5rem, 4vw, 2.45rem);
  line-height: 1;
}

.version-card span:last-child {
  color: var(--muted);
  line-height: 1.45;
}

@media (max-width: 900px) {
  .landing-shell {
    align-content: start;
  }

  .versions {
    grid-template-columns: 1fr;
  }
}