.page-ai {
  background: var(--gradient-page);
}

.ai-hero {
  position: relative;
  max-width: 100%;
  overflow-x: clip;
  background:
    radial-gradient(58% 74% at 92% 4%, var(--color-glow-accent), transparent 72%),
    radial-gradient(42% 58% at 8% 100%, var(--color-glow-cyan-soft), transparent 74%);
}

.ai-hero-glow {
  position: absolute;
  top: -18%;
  right: -8%;
  width: 56%;
  height: 92%;
  border-radius: var(--radius-pill);
  background: linear-gradient(225deg, var(--color-glow-accent-soft), var(--color-glow-cyan));
  filter: blur(52px);
  pointer-events: none;
}

.ai-hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .92fr);
  align-items: center;
  gap: 64px;
  min-height: 620px;
  padding-top: 66px;
  padding-bottom: 76px;
}

.ai-hero-copy {
  position: relative;
  z-index: 2;
}

.ai-hero-copy h1 {
  max-width: 720px;
  margin-top: 20px;
}

.ai-hero-lead {
  max-width: 670px;
  margin-top: 22px;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1.8;
}

.ai-console {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border: 1.5px solid var(--color-cyan);
  border-radius: var(--radius-md);
  background: var(--color-panel-glass);
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(12px);
}

.ai-console::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  box-shadow: inset 0 0 0 1px var(--color-highlight);
  pointer-events: none;
}

.ai-console-head {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 48px;
  gap: 12px;
  padding-inline: 18px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.ai-console-file {
  flex: 1;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.ai-console-body {
  position: relative;
  padding: 28px;
}

.ai-console-label {
  color: var(--color-text-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
}

.ai-tool-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.ai-tool-stack span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding-inline: 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background: var(--color-panel);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.ai-route-path {
  position: relative;
  margin-top: 28px;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.ai-route-art {
  width: 100%;
  height: auto;
  margin-block: 8px;
  color: var(--color-accent);
}

.ai-route-art path:last-of-type {
  color: var(--color-cyan-deep);
}

.ai-route-node {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.ai-route-node strong {
  color: var(--color-text);
  font-size: 13px;
}

.ai-route-key {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
}

.ai-route-node-end {
  border-top: 1px dashed var(--color-border);
  padding-top: 12px;
}

.ai-console-status {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 18px;
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 750;
}

.ai-console-status span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.ai-console-status i {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-tint);
}

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

.ai-principle {
  position: relative;
  min-height: 250px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.ai-principle-main {
  grid-row: span 2;
  min-height: 518px;
  padding: 38px;
  background: var(--gradient-deep);
}

.ai-principle::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -54px;
  width: 150px;
  height: 150px;
  border-radius: var(--radius-pill);
  background: var(--color-glow-cyan-soft);
  filter: blur(18px);
  pointer-events: none;
}

.ai-principle h3 {
  position: relative;
  margin-top: 24px;
  font-size: 25px;
}

.ai-principle p {
  position: relative;
  margin-top: 14px;
  color: var(--color-text-muted);
  line-height: 1.85;
}

.ai-principle-mark {
  position: relative;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .1em;
}

.ai-principle-main h3,
.ai-principle-main p,
.ai-principle-main .ai-principle-mark {
  color: var(--color-on-dark);
}

.ai-principle-main p {
  color: var(--color-on-dark-muted);
  font-size: 17px;
}

.ai-matrix-section {
  background: var(--color-panel-alt);
}

.ai-tool-table td:first-child {
  color: var(--color-text);
  font-family: var(--font-display);
}

.ai-matrix-note {
  margin-top: 24px;
}

.ai-tool-guides {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.ai-tool-guide {
  padding: 32px;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.ai-tool-guide:nth-child(even) {
  border-right: 0;
}

.ai-tool-guide:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.ai-tool-guide-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.ai-tool-guide h3 {
  font-size: 23px;
}

.ai-tool-guide p {
  margin-top: 16px;
  color: var(--color-text-muted);
  line-height: 1.85;
}

.ai-runtime-section {
  background: var(--color-deep);
}

.ai-runtime-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, .55fr);
  align-items: start;
  gap: 48px;
}

.ai-runtime-section .section-heading h2 {
  color: var(--color-on-dark);
}

.ai-runtime-section .section-heading p {
  color: var(--color-on-dark-muted);
}

.ai-runtime-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-on-dark-line);
  border-radius: var(--radius-sm);
  background: var(--color-on-dark-line);
}

.ai-runtime-list article {
  min-height: 230px;
  padding: 26px;
  background: var(--color-deep-alt);
}

.ai-runtime-list h3 {
  color: var(--color-on-dark);
  font-size: 21px;
}

.ai-runtime-list p {
  margin-top: 12px;
  color: var(--color-on-dark-muted);
  line-height: 1.8;
}

.ai-config-panel {
  position: sticky;
  top: 24px;
  overflow: hidden;
  border: 1px solid var(--color-cyan);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.ai-config-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 54px;
  padding-inline: 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 12px;
}

.ai-config-rows {
  margin: 0;
  padding: 8px 18px;
}

.ai-config-rows div {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 12px;
  padding-block: 14px;
  border-bottom: 1px solid var(--color-border);
}

.ai-config-rows div:last-child {
  border-bottom: 0;
}

.ai-config-rows dt {
  color: var(--color-accent-dark);
  font-weight: 800;
}

.ai-config-rows dd {
  margin: 0;
  color: var(--color-text-muted);
}

.ai-config-foot {
  padding: 18px;
  background: var(--color-cyan-soft);
  color: var(--color-text-muted);
  font-size: 13px;
}

.ai-check-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.ai-check-card {
  min-height: 250px;
  padding: 24px;
  border-top: 3px solid var(--color-cyan);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.ai-check-card:nth-child(even) {
  border-top-color: var(--color-accent);
}

.ai-check-card h3 {
  font-size: 20px;
}

.ai-check-card p {
  margin-top: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.ai-failure-section {
  background: var(--color-panel);
}

.ai-failure-section .faq-item {
  background: var(--color-bg-top);
}

.ai-selection {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.ai-selection article {
  position: relative;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.ai-selection-label {
  display: inline-flex;
  align-items: center;
  min-height: 27px;
  padding-inline: 10px;
  border-radius: var(--radius-xs);
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
  font-size: 12px;
  font-weight: 800;
}

.ai-selection h3 {
  margin-top: 18px;
  font-size: 22px;
}

.ai-selection p {
  margin-top: 12px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.ai-promo {
  margin-top: 42px;
}

.ai-promo-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.ai-promo .button-secondary {
  border-color: var(--color-on-dark-line);
  background: var(--color-panel);
}

@media (max-width: 1100px) {
  .ai-hero-layout {
    grid-template-columns: minmax(0, 1fr) minmax(370px, .85fr);
    gap: 38px;
  }

  .ai-check-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .ai-hero-layout {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .ai-console {
    width: 100%;
    max-width: 680px;
  }

  .ai-runtime-layout {
    grid-template-columns: 1fr;
  }

  .ai-config-panel {
    position: static;
  }
}

@media (max-width: 768px) {
  .ai-hero-glow {
    display: none;
  }

  .ai-hero-layout {
    gap: 38px;
    padding-top: 42px;
    padding-bottom: 54px;
  }

  .ai-hero-lead {
    font-size: 16px;
  }

  .ai-console-body {
    padding: 20px;
  }

  .ai-principle-grid,
  .ai-tool-guides,
  .ai-runtime-list,
  .ai-selection {
    grid-template-columns: 1fr;
  }

  .ai-principle-main {
    grid-row: auto;
    min-height: 320px;
    padding: 28px;
  }

  .ai-tool-guide {
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .ai-tool-guide:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--color-border);
  }

  .ai-tool-guide:last-child {
    border-bottom: 0;
  }

  .ai-runtime-list article {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  .ai-console-head {
    padding-inline: 14px;
  }

  .ai-console-body {
    padding: 16px;
  }

  .ai-route-path {
    padding: 14px;
  }

  .ai-route-node {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .ai-check-grid {
    grid-template-columns: 1fr;
  }

  .ai-check-card {
    min-height: auto;
  }

  .ai-principle,
  .ai-tool-guide,
  .ai-selection article {
    padding: 22px;
  }

  .ai-promo-actions {
    width: 100%;
    flex-direction: column;
  }

  .ai-promo-actions .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ai-hero-glow,
  .ai-route-art {
    transform: none;
  }
}