body[data-product="vianta"] {
  --gp-void: #0B0E1A;
  --gp-accent: #8E82FF;
  --gp-accent-ink: #0a0716;
  --gp-panel: rgba(20, 23, 42, 0.62);
  --gp-display-font: 'CalSans', 'Fredoka', system-ui, sans-serif;

  --va-blue: #6E93FF;
  --va-violet: #9184FF;
  --va-teal: #33D6C6;
  --va-amber: #F4B36A;
  --va-surface-2: #12162a;
}

body[data-product="vianta"].rk-chapter-page { background: #070810; }

body[data-product="vianta"] .gp-hero {
  min-height: clamp(520px, 84svh, 900px);
  background: var(--gp-void);
}
body[data-product="vianta"] .gp-hero__aura {
  position: absolute;
  inset: -12%;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(38% 42% at 22% 28%, color-mix(in srgb, var(--va-blue) 60%, transparent), transparent 70%),
    radial-gradient(40% 46% at 80% 24%, color-mix(in srgb, var(--va-violet) 55%, transparent), transparent 70%),
    radial-gradient(48% 52% at 58% 82%, color-mix(in srgb, var(--va-teal) 42%, transparent), transparent 72%);
  filter: blur(34px) saturate(1.08);
  opacity: 0.5;
  animation: va-drift 34s ease-in-out infinite alternate;
}
@keyframes va-drift {
  from { transform: translate3d(-2%, -1%, 0) scale(1.02); }
  to   { transform: translate3d(2%, 2%, 0) scale(1.09); }
}

body[data-product="vianta"] .va-hero-mark {
  width: clamp(84px, 11vw, 120px);
  height: auto;
  filter: drop-shadow(0 14px 34px rgba(0, 0, 0, 0.5))
          drop-shadow(0 0 44px rgba(122, 90, 240, 0.32));
}
body[data-product="vianta"] .va-hero-name {
  margin: 0;
  font-family: var(--gp-display-font);
  font-size: clamp(3rem, 9vw, 5.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: #9db4ff;
}
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  body[data-product="vianta"] .va-hero-name {
    background: linear-gradient(96deg, var(--va-blue) 0%, var(--va-violet) 46%, var(--va-teal) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

body[data-product="vianta"] .gp-hero__tagline {
  text-transform: none;
  letter-spacing: -0.01em;
  font-weight: 600;
  font-size: clamp(1.5rem, 3.8vw, 2.6rem);
}
body[data-product="vianta"] .va-hero-meta {
  margin: 4px 0 0;
  color: var(--gp-ink-dim);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
}

body[data-product="vianta"] .gp-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(34px, 5vw, 56px);
}
body[data-product="vianta"] .gp-card {
  border-radius: 16px;
  background: var(--gp-panel);
  border: 1px solid rgba(255, 255, 255, 0.09);
  padding: 22px 20px;
  text-align: left;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.22s ease, border-color 0.22s ease;
}
body[data-product="vianta"] .gp-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--gp-accent) 55%, transparent);
}
body[data-product="vianta"] .gp-card h3 {
  margin: 0 0 8px;
  font-family: var(--gp-display-font);
  font-size: 1.12rem;
  line-height: 1.2;
}
body[data-product="vianta"] .gp-card p {
  margin: 0;
  color: var(--gp-ink-dim);
  font-size: 0.94rem;
  line-height: 1.55;
}

body[data-product="vianta"] .va-check {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  max-width: 46ch;
}
body[data-product="vianta"] .va-check li {
  position: relative;
  padding-left: 34px;
  color: var(--gp-ink-dim);
  line-height: 1.5;
}
body[data-product="vianta"] .va-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1px;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--va-amber) 22%, transparent);
  border: 1px solid color-mix(in srgb, var(--va-amber) 60%, transparent);
}
body[data-product="vianta"] .va-check li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 5px;
  width: 6px;
  height: 10px;
  border: solid var(--va-amber);
  border-width: 0 2px 2px 0;
  transform: rotate(42deg);
}

body[data-product="vianta"] .va-mono {
  display: inline-block;
  margin-top: 18px;
  padding: 8px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-family: ui-monospace, 'SF Mono', Menlo, Monaco, Consolas, monospace;
  font-size: 0.86rem;
  color: var(--gp-ink-dim);
}

body[data-product="vianta"] .gp-shots img {
  height: clamp(240px, 34vw, 420px);
}

@media (prefers-reduced-motion: reduce) {
  body[data-product="vianta"] .gp-hero__aura { animation: none; }
  body[data-product="vianta"] .gp-card { transition: none; }
}