/**
 * Architecture page — violet accent visual layer
 */
.page-architecture {
  --arch-accent: #8b5cf6;
  --arch-accent-2: #6366f1;
  --arch-accent-dim: rgba(139, 92, 246, 0.12);
  --arch-border: rgba(139, 92, 246, 0.35);
  --arch-cyan: #22d3ee;
}

.page-architecture .arch-hero {
  position: relative;
  padding: 40px 0 56px;
  overflow: hidden;
}

@media (min-width: 969px) {
  .page-architecture .arch-hero {
    padding: 100px 0 72px;
  }
}

.page-architecture .arch-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.page-architecture .arch-hero__content .hero-title {
  text-align: left;
  font-size: clamp(2rem, 4vw, 3rem) !important;
}

.page-architecture .arch-hero__content .hero-description {
  text-align: left;
  max-width: none;
  margin: 0;
}

.page-architecture .arch-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-architecture .arch-pill {
  font-family: var(--proto-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--arch-border);
  background: var(--arch-accent-dim);
  color: var(--arch-accent);
}

.page-architecture .arch-hero__visual {
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-architecture .arch-layer-stack {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-architecture .arch-layer-stack__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
  font-family: var(--proto-font-mono);
  font-size: 10px;
  color: var(--proto-text-muted);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-architecture .arch-layer-stack__item:hover {
  transform: translateX(4px);
  border-color: var(--arch-border);
}

.page-architecture .arch-layer-stack__item--highlight {
  border-color: var(--arch-border);
  color: var(--arch-accent);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.12);
}

.page-architecture .arch-layer-stack__num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  background: var(--arch-accent-dim);
  color: var(--arch-accent);
  font-weight: 600;
  font-size: 9px;
}

.page-architecture .arch-layer-stack__name {
  flex: 1;
  text-align: left;
}

.page-architecture .arch-block {
  padding: 80px 0;
  position: relative;
}

.page-architecture .arch-block--alt {
  background: linear-gradient(180deg, transparent, rgba(15, 23, 42, 0.45), transparent);
}

.page-architecture .arch-block__header {
  margin-bottom: 40px;
}

.page-architecture .arch-block__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--proto-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--arch-accent);
  margin-bottom: 12px;
}

.page-architecture .arch-block__eyebrow::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--arch-accent);
}

.page-architecture .arch-block__title {
  font-family: var(--proto-font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.page-architecture .arch-block__lead {
  font-size: 15px;
  line-height: 1.7;
  color: var(--proto-text-muted);
  max-width: 720px;
  margin: 0;
}

.page-architecture .arch-layer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.page-architecture .arch-layer-card {
  padding: 22px;
  border-radius: var(--proto-radius-sm);
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-architecture .arch-layer-card:hover {
  transform: translateY(-3px);
  border-color: var(--arch-border);
}

.page-architecture .arch-layer-card__level {
  font-family: var(--proto-font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--arch-accent);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.page-architecture .arch-layer-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 8px;
}

.page-architecture .arch-layer-card__components {
  font-family: var(--proto-font-mono);
  font-size: 10px;
  line-height: 1.6;
  color: var(--arch-cyan);
  margin-bottom: 10px;
}

.page-architecture .arch-layer-card p {
  font-size: 12px;
  line-height: 1.55;
  color: var(--proto-text-muted);
  margin: 0;
}

.page-architecture .arch-arch-split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: stretch;
  margin-top: 8px;
}

.page-architecture .arch-arch-panel {
  padding: 28px 24px;
  border-radius: var(--proto-radius);
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
}

.page-architecture .arch-arch-panel--chain {
  border-top: 2px solid var(--proto-blue);
}

.page-architecture .arch-arch-panel--offchain {
  border-top: 2px solid var(--arch-accent);
}

.page-architecture .arch-arch-panel__label {
  font-family: var(--proto-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--proto-cyan);
  margin-bottom: 16px;
}

.page-architecture .arch-arch-panel--offchain .arch-arch-panel__label {
  color: var(--arch-accent);
}

.page-architecture .arch-tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-architecture .arch-tag {
  font-family: var(--proto-font-mono);
  font-size: 10px;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--proto-border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--proto-text-muted);
}

.page-architecture .arch-arch-divider {
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-architecture .arch-arch-divider span {
  font-family: var(--proto-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--proto-text-muted);
  padding: 8px 12px;
  border: 1px solid var(--proto-border);
  border-radius: 999px;
  background: var(--proto-bg-2);
  white-space: nowrap;
}

.page-architecture .arch-protocol-section {
  margin-top: 40px;
}

.page-architecture .arch-protocol-section:first-of-type {
  margin-top: 0;
}

.page-architecture .arch-protocol-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.page-architecture .arch-protocol-header h3 {
  font-family: var(--proto-font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
}

.page-architecture .arch-protocol-header--gas h3 { color: #fbbf24; }
.page-architecture .arch-protocol-header--ai h3 { color: var(--proto-cyan); }

.page-architecture .arch-protocol-header p {
  font-size: 13px;
  color: var(--proto-text-muted);
  margin: 0;
  flex: 1;
  min-width: 200px;
}

.page-architecture .arch-protocol-header a {
  font-size: 13px;
  font-weight: 600;
  color: var(--proto-blue);
  text-decoration: none;
  white-space: nowrap;
}

.page-architecture .arch-protocol-header a:hover { color: var(--proto-cyan); }

.page-architecture .arch-bento {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-architecture .arch-bento--ai {
  grid-template-columns: repeat(3, 1fr);
}

.page-architecture .arch-module-card {
  padding: 20px;
  border-radius: var(--proto-radius-sm);
  border: 1px solid var(--proto-border);
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.8), rgba(8, 12, 24, 0.5));
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-architecture .arch-module-card:hover {
  transform: translateY(-3px);
}

.page-architecture .arch-protocol-section--gas .arch-module-card:hover {
  border-color: rgba(245, 158, 11, 0.35);
}

.page-architecture .arch-protocol-section--ai .arch-module-card:hover {
  border-color: rgba(34, 211, 238, 0.35);
}

.page-architecture .arch-module-card__index {
  font-family: var(--proto-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.page-architecture .arch-protocol-section--gas .arch-module-card__index { color: #fbbf24; }
.page-architecture .arch-protocol-section--ai .arch-module-card__index { color: var(--proto-cyan); }

.page-architecture .arch-module-card h4 {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 6px;
}

.page-architecture .arch-module-card p {
  font-size: 11px;
  line-height: 1.55;
  color: var(--proto-text-muted);
  margin: 0;
}

.page-architecture .arch-payment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.page-architecture .arch-payment-card {
  padding: 28px;
  border-radius: var(--proto-radius);
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
}

.page-architecture .arch-payment-card--gas { border-top: 2px solid #f59e0b; }
.page-architecture .arch-payment-card--ai { border-top: 2px solid var(--proto-blue); }

.page-architecture .arch-payment-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 16px;
}

.page-architecture .arch-payment-card code {
  display: block;
  font-family: var(--proto-font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--proto-text-muted);
}

.page-architecture .arch-pipeline {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding: 8px 0 16px;
}

.page-architecture .arch-pipeline__step {
  flex: 1;
  min-width: 140px;
  position: relative;
  padding: 0 12px;
  text-align: center;
}

.page-architecture .arch-pipeline__step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -6px;
  top: 14px;
  color: var(--proto-text-muted);
  opacity: 0.4;
  font-size: 14px;
}

.page-architecture .arch-pipeline__node {
  font-family: var(--proto-font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--arch-accent);
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--arch-border);
  background: var(--arch-accent-dim);
  margin-bottom: 10px;
}

.page-architecture .arch-pipeline--gas .arch-pipeline__node {
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.35);
  background: rgba(245, 158, 11, 0.08);
}

.page-architecture .arch-pipeline--ai .arch-pipeline__node {
  color: var(--proto-cyan);
  border-color: rgba(34, 211, 238, 0.35);
  background: rgba(34, 211, 238, 0.08);
}

.page-architecture .arch-pipeline__desc {
  font-size: 11px;
  line-height: 1.5;
  color: var(--proto-text-muted);
}

.page-architecture .arch-boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.page-architecture .arch-boundary-panel {
  padding: 28px;
  border-radius: var(--proto-radius);
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
}

.page-architecture .arch-boundary-panel--onchain { border-top: 2px solid var(--proto-cyan); }
.page-architecture .arch-boundary-panel--offchain { border-top: 2px solid var(--arch-accent); }

.page-architecture .arch-boundary-panel__label {
  font-family: var(--proto-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.page-architecture .arch-boundary-panel--onchain .arch-boundary-panel__label { color: var(--proto-cyan); }
.page-architecture .arch-boundary-panel--offchain .arch-boundary-panel__label { color: var(--arch-accent); }

.page-architecture .arch-boundary-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-architecture .arch-boundary-list li {
  font-family: var(--proto-font-mono);
  font-size: 11px;
  line-height: 1.5;
  color: var(--proto-text-muted);
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--proto-border);
  background: rgba(0, 0, 0, 0.2);
}

.page-architecture .arch-mono-panel {
  margin: 0;
  padding: 28px 32px;
  font-family: var(--proto-font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: var(--proto-text-muted);
  background: var(--proto-surface);
  border: 1px solid var(--proto-border);
  border-radius: var(--proto-radius);
  white-space: pre-wrap;
  word-break: break-word;
}

.page-architecture .arch-client-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.page-architecture .arch-terminal {
  border-radius: var(--proto-radius-sm);
  border: 1px solid var(--proto-border);
  overflow: hidden;
  background: #0a0f1a;
}

.page-architecture .arch-terminal__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid var(--proto-border);
}

.page-architecture .arch-terminal__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--proto-border-strong);
}

.page-architecture .arch-terminal__dot--active { background: #4ade80; }

.page-architecture .arch-terminal__title {
  margin-left: 8px;
  font-family: var(--proto-font-mono);
  font-size: 11px;
  color: var(--proto-text-muted);
}

.page-architecture .arch-terminal__body {
  margin: 0;
  padding: 20px;
  font-family: var(--proto-font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--proto-text-muted);
  white-space: pre-wrap;
}

.page-architecture .arch-client-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--proto-text-muted);
  margin: 0;
  padding: 20px;
  border-radius: var(--proto-radius-sm);
  border: 1px solid var(--arch-border);
  background: var(--arch-accent-dim);
}

.page-architecture .arch-metrics-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-bottom: 32px;
}

.page-architecture .arch-metric-card {
  padding: 20px 14px;
  text-align: center;
  border-radius: var(--proto-radius-sm);
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
}

.page-architecture .arch-metric-card__value {
  font-family: var(--proto-font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--arch-accent);
  margin-bottom: 6px;
}

.page-architecture .arch-metric-card__label {
  font-size: 10px;
  color: var(--proto-text-muted);
  line-height: 1.4;
}

.page-architecture .arch-phase-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.page-architecture .arch-phase {
  padding: 20px;
  border-radius: var(--proto-radius-sm);
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
  transition: border-color 0.2s ease;
}

.page-architecture .arch-phase:hover {
  border-color: var(--arch-border);
}

.page-architecture .arch-phase__label {
  font-family: var(--proto-font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--arch-accent);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.page-architecture .arch-phase p {
  font-size: 11px;
  line-height: 1.55;
  color: var(--proto-text-muted);
  margin: 0;
}

.page-architecture .arch-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-architecture .arch-link-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-radius: var(--proto-radius);
  border: 1px solid var(--proto-border);
  background: var(--proto-surface);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-architecture .arch-link-card:hover {
  transform: translateY(-3px);
  border-color: var(--arch-border);
}

.page-architecture .arch-link-card--gas:hover { border-color: rgba(245, 158, 11, 0.4); }
.page-architecture .arch-link-card--ai:hover { border-color: rgba(34, 211, 238, 0.4); }

.page-architecture .arch-link-card span {
  font-weight: 600;
  font-size: 15px;
}

.page-architecture .arch-link-card em {
  font-style: normal;
  font-size: 13px;
  color: var(--proto-blue);
}

@media (max-width: 1100px) {
  .page-architecture .arch-layer-grid { grid-template-columns: repeat(2, 1fr); }
  .page-architecture .arch-bento--ai { grid-template-columns: repeat(2, 1fr); }
  .page-architecture .arch-metrics-grid { grid-template-columns: repeat(3, 1fr); }
  .page-architecture .arch-phase-track { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .page-architecture .arch-hero__inner { grid-template-columns: 1fr; }
  .page-architecture .arch-hero__visual { min-height: 260px; }
  .page-architecture .arch-arch-split,
  .page-architecture .arch-payment-grid,
  .page-architecture .arch-boundary-grid,
  .page-architecture .arch-client-split { grid-template-columns: 1fr; }
  .page-architecture .arch-arch-divider { padding: 8px 0; }
  .page-architecture .arch-bento,
  .page-architecture .arch-bento--ai { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .page-architecture .arch-block {
    padding: 52px 0;
  }

  .page-architecture .arch-block__header {
    margin-bottom: 24px;
  }

  .page-architecture .arch-layer-grid,
  .page-architecture .arch-metrics-grid,
  .page-architecture .arch-phase-track,
  .page-architecture .arch-boundary-list,
  .page-architecture .arch-links-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .page-architecture .arch-pipeline__step {
    min-width: 0;
  }
}