.page-shell {
  padding: var(--space-16) 0 var(--space-24);
}

.page-split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(19rem, 24rem);
  gap: clamp(var(--space-8), 5vw, var(--space-12));
  align-items: start;
}

.page-split > * {
  min-width: 0;
}

.page-split-download {
  grid-template-columns: minmax(0, 1.15fr) minmax(19rem, 24rem);
  gap: clamp(var(--space-8), 5vw, var(--space-12));
}

.page-hero-copy {
  max-width: 44rem;
}

.page-hero-copy h1 {
  max-width: 11ch;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
  margin-bottom: var(--space-6);
}

.page-hero-lead {
  max-width: 40rem;
  margin: 0 0 var(--space-12);
  color: var(--text-secondary);
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  line-height: 1.75;
}

.page-body-copy {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.8;
}

.page-sidebar .mascot-card {
  min-height: 100%;
}

.mascot-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) * 1.15);
  padding: var(--space-6);
  background: linear-gradient(160deg, var(--forest-900) 0%, var(--forest-800) 100%);
  box-shadow: 0 1.75rem 3rem color-mix(in srgb, var(--bg-primary) 88%, transparent);
}

.mascot-card::before {
  content: "";
  position: absolute;
  inset: auto -15% -25% auto;
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(219, 176, 48, 0.16) 0%, transparent 72%);
}

.mascot-card > * {
  position: relative;
  z-index: 1;
}

.mascot-card-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: rgba(219, 176, 48, 0.14);
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mascot-card h2,
.mascot-card h3 {
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.mascot-card h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.mascot-card p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.mascot-card p + p,
.mascot-card-art + p,
.mascot-card-points {
  margin-top: var(--space-4);
}

.mascot-card-art {
  margin-top: var(--space-4);
}

.mascot-card-points {
  display: grid;
  gap: var(--space-3);
}

.mascot-card-point {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.mascot-card-point strong {
  color: var(--text-primary);
}

.page-sidebar,
.page-sidebar.mascot-card,
.sidecar-sidebar,
.sidecar-sidebar.mascot-card,
.guide-sidebar,
.guide-sidebar.mascot-card,
.docs-home-sidebar,
.docs-home-sidebar.mascot-card,
.migration-guide,
.migration-guide.mascot-card,
.features-guide,
.features-guide.mascot-card {
  position: sticky;
  top: calc(var(--space-16) + 4rem);
  align-self: start;
}

.mascot-inline-card {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: minmax(0, 9rem) minmax(0, 1fr);
  gap: var(--space-4);
  align-items: center;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-secondary) 92%, transparent);
  box-shadow: 0 1rem 2.5rem color-mix(in srgb, var(--bg-primary) 92%, transparent);
}

.mascot-inline-card-art {
  min-height: 11rem;
}

.mascot-inline-card-copy h3 {
  font-size: var(--text-xl);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-2);
}

.mascot-inline-card-copy p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.mascot-inline-card-label {
  display: inline-block;
  margin-bottom: var(--space-2);
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.error-state-shell {
  --error-accent: var(--gold-300);
  --error-accent-soft: color-mix(in srgb, var(--gold-300) 18%, transparent);
  --error-border: color-mix(in srgb, var(--gold-300) 22%, var(--border));
  --error-frame-start: color-mix(in srgb, var(--forest-900) 92%, var(--gold-950));
  --error-frame-end: color-mix(in srgb, var(--forest-950) 96%, black);
  max-width: 76rem;
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6.5rem) var(--space-6);
}

.error-state-shell[data-tone="timeout"] {
  --error-accent: #d7be6b;
  --error-accent-soft: color-mix(in srgb, #d7be6b 18%, transparent);
  --error-border: color-mix(in srgb, #d7be6b 22%, var(--border));
}

.error-state-shell[data-tone="rate"] {
  --error-accent: #f0c55a;
  --error-accent-soft: color-mix(in srgb, #f0c55a 20%, transparent);
  --error-border: color-mix(in srgb, #f0c55a 24%, var(--border));
}

.error-state-shell[data-tone="server"] {
  --error-accent: #f1a271;
  --error-accent-soft: color-mix(in srgb, #f1a271 18%, transparent);
  --error-border: color-mix(in srgb, #f1a271 20%, var(--border));
  --error-frame-start: color-mix(in srgb, var(--forest-900) 88%, #3f1b11);
  --error-frame-end: color-mix(in srgb, var(--forest-950) 92%, #130909);
}

.error-state-frame {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(18rem, 22rem) minmax(0, 1fr);
  gap: clamp(var(--space-6), 4vw, var(--space-12));
  align-items: center;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--error-border);
  border-radius: calc(var(--radius-lg) * 1.75);
  background: linear-gradient(145deg, var(--error-frame-start) 0%, var(--error-frame-end) 100%);
  box-shadow:
    0 2rem 4rem color-mix(in srgb, var(--bg-primary) 90%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.error-state-frame::before {
  content: "";
  position: absolute;
  inset: -20% auto auto 62%;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  background: radial-gradient(circle, var(--error-accent-soft) 0%, transparent 72%);
  pointer-events: none;
}

.error-state-frame > * {
  position: relative;
  z-index: 1;
}

.error-state-stage {
  display: grid;
  gap: var(--space-4);
  align-content: start;
}

.error-state-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  width: max-content;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--error-accent-soft);
  color: var(--error-accent);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.error-state-art {
  width: 100%;
  min-height: clamp(18rem, 34vw, 24rem);
  padding: clamp(var(--space-4), 2vw, var(--space-6));
}

.error-state-shell[data-tone="client"] .error-state-art {
  --scene-glow: rgba(232, 200, 94, 0.22);
  --scene-secondary: rgba(219, 176, 48, 0.12);
  --scene-floor: rgba(232, 200, 94, 0.12);
}

.error-state-shell[data-tone="timeout"] .error-state-art,
.error-state-shell[data-tone="rate"] .error-state-art {
  --scene-glow: rgba(240, 197, 90, 0.28);
  --scene-secondary: rgba(244, 225, 156, 0.14);
  --scene-floor: rgba(240, 197, 90, 0.14);
}

.error-state-shell[data-tone="server"] .error-state-art {
  --scene-glow: rgba(241, 162, 113, 0.24);
  --scene-secondary: rgba(214, 104, 83, 0.14);
  --scene-floor: rgba(241, 162, 113, 0.14);
}

.error-state-art img {
  width: min(100%, 17rem);
  max-height: 17rem;
}

.error-state-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.error-state-code {
  font-size: clamp(4.25rem, 13vw, 7.5rem);
  font-weight: 900;
  color: var(--error-accent);
  letter-spacing: -0.08em;
  line-height: 0.9;
}

.error-state-title {
  margin-top: var(--space-4);
  font-size: clamp(2.2rem, 5vw, 4.25rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.05em;
  max-width: 13ch;
}

.error-state-lead {
  margin-top: var(--space-4);
  max-width: 40rem;
  color: var(--text-secondary);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.75;
}

.error-state-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.mascot-scene {
  --scene-glow: rgba(219, 176, 48, 0.16);
  --scene-secondary: rgba(107, 171, 138, 0.16);
  --scene-floor: rgba(250, 240, 204, 0.08);
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--radius-lg) * 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    radial-gradient(circle at 18% 18%, var(--scene-glow) 0%, transparent 34%),
    radial-gradient(circle at 84% 100%, var(--scene-secondary) 0%, transparent 34%),
    linear-gradient(180deg, color-mix(in srgb, var(--forest-800) 90%, black) 0%, color-mix(in srgb, var(--forest-900) 96%, black) 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  isolation: isolate;
}

.mascot-scene::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 92%, rgba(250, 240, 204, 0.07) 92%),
    linear-gradient(90deg, transparent 92%, rgba(250, 240, 204, 0.04) 92%);
  background-size: 100% 1.25rem, 1.25rem 100%;
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 84%, transparent);
  opacity: 0.55;
  z-index: 0;
}

.mascot-scene::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 8%;
  height: 22%;
  border-radius: 999px;
  background: radial-gradient(circle, var(--scene-floor) 0%, transparent 70%);
  z-index: 0;
}

.mascot-scene img {
  position: relative;
  z-index: 1;
  display: block;
  width: min(100%, 14rem);
  max-height: 15rem;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  filter: drop-shadow(0 1rem 1.4rem rgba(0, 0, 0, 0.45));
}

.mascot-scene--gold {
  --scene-glow: rgba(232, 200, 94, 0.22);
  --scene-secondary: rgba(219, 176, 48, 0.14);
  --scene-floor: rgba(232, 200, 94, 0.12);
}

.mascot-scene--emerald {
  --scene-glow: rgba(107, 171, 138, 0.22);
  --scene-secondary: rgba(212, 234, 222, 0.12);
  --scene-floor: rgba(160, 207, 181, 0.12);
}

.mascot-scene--alert {
  --scene-glow: rgba(255, 179, 71, 0.24);
  --scene-secondary: rgba(255, 85, 85, 0.12);
  --scene-floor: rgba(255, 179, 71, 0.12);
}

.mascot-scene--hero img {
  width: min(100%, 12rem);
  max-height: 12.5rem;
}

.error-state-art img {
  width: min(100%, 17rem);
  max-height: 17rem;
}

@media (max-width: 1024px) {
  .page-split,
  .mascot-inline-card {
    grid-template-columns: 1fr;
  }

  .page-sidebar,
  .sidecar-sidebar,
  .guide-sidebar,
  .docs-home-sidebar,
  .migration-guide,
  .features-guide {
    position: static;
    top: auto;
  }

  .error-state-frame {
    grid-template-columns: 1fr;
  }

  .error-state-stage {
    max-width: 28rem;
  }

  .error-state-title {
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  .error-state-shell {
    padding-inline: var(--space-4);
  }

  .error-state-frame {
    padding: var(--space-4);
  }

  .error-state-art {
    min-height: 15rem;
  }

  .error-state-actions {
    width: 100%;
  }

  .error-state-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 440px) {
  .mascot-card {
    display: grid;
    gap: var(--space-6);
    padding: var(--space-6);
  }

  .mascot-card-label,
  .mascot-card h2 {
    margin: 0;
  }

  .mascot-card p,
  .mascot-card-art,
  .mascot-card-points,
  .guide-sidebar-list,
  .features-guide-list,
  .migration-guide-list {
    margin: 0;
  }

  .mascot-card h2 {
    max-width: 11ch;
    font-size: clamp(1.75rem, 8vw, 2.15rem);
    line-height: 1.08;
  }

  .mascot-card p {
    max-width: 19rem;
    line-height: 1.78;
  }

  .mascot-card-point {
    max-width: 19rem;
    padding: var(--space-4);
    line-height: 1.65;
  }

  .mascot-card-art,
  .mascot-card-points,
  .guide-sidebar-list,
  .features-guide-list,
  .migration-guide-list {
    width: min(100%, 19rem);
  }

  .guide-sidebar-list,
  .features-guide-list,
  .migration-guide-list {
    gap: var(--space-4);
    padding-top: 0;
  }

  .guide-sidebar-list li,
  .features-guide-list li,
  .migration-guide-list li {
    min-height: 0;
    grid-template-columns: 2.45rem minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
    padding-inline: var(--space-2);
  }

  .guide-sidebar-list span,
  .features-guide-list span,
  .migration-guide-list span {
    width: 2.45rem;
    height: 2.45rem;
  }

  .mascot-scene {
    padding: var(--space-6) var(--space-4);
  }

  .mascot-scene img {
    width: min(100%, 9.75rem);
    max-height: 10.5rem;
  }

  .mascot-inline-card {
    padding: var(--space-4);
  }

  .error-state-art img {
    width: min(100%, 13.5rem);
    max-height: 13.5rem;
  }
}

/* .page-split-download inherits the 1024px breakpoint from .page-split */