:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #667085;
  --line: #e5e7eb;
  --panel: #ffffff;
  --bg: #f6f7fb;
  --brand: #2f6fed;
  --brand-dark: #174bb8;
  --green: #22a566;
  --shadow: 0 22px 55px rgba(15, 23, 42, .14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 12% 8%, rgba(47, 111, 237, .18), transparent 26rem),
    radial-gradient(circle at 88% 0%, rgba(34, 165, 102, .16), transparent 22rem),
    var(--bg);
  color: var(--ink);
}

.landing {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 48px 20px 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  min-height: 100vh;
}

.hero { text-align: center; }

.logo {
  font-size: 56px;
  line-height: 1;
  margin-bottom: 8px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 950;
  letter-spacing: -.02em;
}

.tagline {
  margin: 0 auto;
  max-width: 38ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.versions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 720px) {
  .versions { grid-template-columns: 1fr 1fr; }
}

.version-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 22px;
  border: 1px solid rgba(229, 231, 235, .9);
  border-radius: 18px;
  background: var(--panel);
  color: inherit;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.version-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand);
  box-shadow: 0 28px 60px rgba(47, 111, 237, .18);
}

.version-emoji {
  font-size: 44px;
  line-height: 1;
}

.version-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 999px;
  background: #eef2f7;
  color: #344054;
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.version-card.v2 .version-tag {
  background: #e9f8ef;
  color: #166534;
}

.version-card h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 900;
}

.version-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}

.cta {
  margin-top: 6px;
  font-weight: 900;
  color: var(--brand);
}

.version-card.v2 .cta { color: var(--green); }

.foot {
  margin-top: auto;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}