:root {
  --purple: #9B6DFF;
  --purple-deep: #6B4DB8;
  --purple-soft: #F5F0FF;
  --purple-light: #EDE6FF;
  --paper: #FFFFFF;
  --soft: #FAF8F4;
  --ink: #0E0B14;
  --ink-2: #2A2533;
  --mute: #6B6677;
  --rule: #E8E5EE;
  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--soft);
}

a { color: var(--purple-deep); text-decoration: none; }
a:hover { color: var(--purple); }

.version-wrap {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.version-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--rule);
}

.version-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.version-logo img {
  display: block;
  height: 30px;
  width: auto;
}

.version-nav-link {
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--ink), var(--purple-deep));
  color: #fff;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.version-nav-link:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(107, 77, 184, 0.24);
}

.version-main {
  flex: 1;
  padding: 56px 0 72px;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  margin-bottom: 22px;
  border-radius: 999px;
  background: var(--purple-soft);
}

.version-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--purple);
}

.version-badge-text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--purple-deep);
}

.version-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.version-title-muted {
  display: block;
  color: var(--mute);
}

.version-title-highlight {
  display: block;
  background: linear-gradient(var(--purple-light), var(--purple-light)) no-repeat;
  background-size: 100% 42%;
  background-position: 0 78%;
}

.version-lead {
  max-width: 560px;
  margin: 0 0 40px;
  font-size: 1.05rem;
  color: var(--mute);
}

.version-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.version-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 100%;
  padding: 22px 22px 20px;
  border-radius: 18px;
  border: 1px solid color-mix(in srgb, var(--purple) 14%, var(--rule));
  background: linear-gradient(160deg, var(--paper), color-mix(in srgb, var(--purple-soft) 35%, var(--paper)));
  box-shadow: 0 2px 10px rgba(14, 11, 20, 0.04);
  color: inherit;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.version-card:hover {
  color: inherit;
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--purple) 28%, var(--rule));
  box-shadow: 0 14px 36px rgba(107, 77, 184, 0.12);
}

.version-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.version-card-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute);
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--soft);
}

.version-card-label--new {
  color: var(--purple-deep);
  border-color: color-mix(in srgb, var(--purple) 22%, var(--rule));
  background: color-mix(in srgb, var(--purple-soft) 70%, #fff);
}

.version-card-id {
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  color: color-mix(in srgb, var(--ink) 30%, var(--purple-deep));
}

.version-card--v2 .version-card-id {
  color: var(--purple-deep);
}

.version-card-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  line-height: 1.15;
  color: color-mix(in srgb, var(--ink) 35%, var(--purple-deep));
}

.version-card-desc {
  margin: 0;
  flex: 1;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--mute);
}

.version-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--purple-deep);
}

.version-card:hover .version-card-cta {
  color: var(--purple);
}

.version-card-cta svg {
  transition: transform 180ms ease;
}

.version-card:hover .version-card-cta svg {
  transform: translateX(3px);
}

.version-footer {
  padding: 28px 0 36px;
  border-top: 1px solid var(--rule);
  background: color-mix(in srgb, var(--purple-soft) 18%, var(--paper));
}

.version-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--mute);
}

.version-footer-mono {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .version-main {
    padding: 40px 0 56px;
  }

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

  .version-nav-link {
    font-size: 13px;
    padding: 7px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .version-card,
  .version-card-cta svg,
  .version-nav-link {
    transition: none;
  }

  .version-card:hover,
  .version-nav-link:hover {
    transform: none;
  }
}