:root {
  --ai-board-height: 486px;
  --ai-board-column: 122px;
  --ai-board-gap: 18px;
  --ai-record-name: 230px;
  --ai-dev-code-size: 64px;
  --ai-matrix-min-width: 820px;
}

.ai-hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-soft);
}

.ai-hero::before {
  position: absolute;
  top: 8%;
  right: -14%;
  width: 68%;
  height: 76%;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  background: radial-gradient(circle at center, var(--color-accent-soft), var(--color-transparent) 68%);
  content: "";
  opacity: 0.72;
  transform: rotate(-8deg);
}

.ai-hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 64%;
  height: 70%;
  background:
    linear-gradient(var(--color-grid) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-grid) 1px, var(--color-transparent) 1px);
  background-size: 34px 34px;
  content: "";
  mask-image: linear-gradient(to bottom, var(--color-transparent), var(--color-black));
}

.ai-hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: calc(100vh - var(--header-height));
  grid-template-columns: minmax(380px, 0.82fr) minmax(560px, 1.18fr);
  align-items: center;
  gap: clamp(42px, 6vw, 88px);
  padding-top: 72px;
  padding-bottom: 84px;
}

.ai-hero-copy {
  position: relative;
  z-index: 4;
}

.ai-hero-copy .eyebrow {
  margin-bottom: 22px;
}

.ai-hero-copy h1 {
  max-width: 620px;
  margin-bottom: 27px;
}

.ai-hero-copy .lead {
  margin-top: 26px;
  margin-bottom: 0;
  font-size: 18px;
}

.ai-hero-copy .fact-strip {
  margin-top: 26px;
}

.ai-routing-board {
  position: relative;
  min-width: 0;
  height: var(--ai-board-height);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow:
    var(--shadow-deep),
    inset 0 1px 0 var(--color-border-soft);
  transform: translateY(42px) rotate(-0.5deg);
}

.ai-routing-board::before {
  position: absolute;
  inset: 54px 0 42px;
  background:
    linear-gradient(var(--color-grid) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-grid) 1px, var(--color-transparent) 1px);
  background-size: 32px 32px;
  content: "";
}

.ai-routing-board::after {
  position: absolute;
  right: 16%;
  bottom: -42%;
  width: 70%;
  height: 68%;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-medium), var(--color-transparent) 68%);
  content: "";
  pointer-events: none;
}

.ai-board-chrome {
  position: relative;
  z-index: 3;
  display: flex;
  height: 54px;
  align-items: center;
  padding: 0 18px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel-deep);
}

.ai-board-title {
  margin-left: auto;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.ai-board-body {
  position: relative;
  z-index: 2;
  display: grid;
  height: calc(100% - 96px);
  grid-template-columns: var(--ai-board-column) minmax(220px, 1fr) var(--ai-board-column);
  gap: var(--ai-board-gap);
  padding: 26px 22px 22px;
}

.ai-entry-column,
.ai-tool-column {
  display: grid;
  align-content: start;
  gap: 9px;
}

.ai-column-label {
  margin-bottom: 5px;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
}

.ai-entry,
.ai-tool {
  display: flex;
  min-height: 43px;
  align-items: center;
  padding: 0 12px;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-deep);
  font-family: var(--font-mono);
  font-size: 10px;
}

.ai-entry.active,
.ai-tool.active {
  color: var(--color-accent);
  border-color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  box-shadow: 0 0 22px var(--color-accent-soft);
}

.ai-route-field {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border-right: 1px solid var(--color-border-soft);
  border-left: 1px solid var(--color-border-soft);
}

.ai-route-line {
  position: absolute;
  right: 7%;
  left: 7%;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent-dark), var(--color-accent), var(--color-accent-dark));
  box-shadow: 0 0 10px var(--color-accent-medium);
}

.ai-route-line-top {
  top: 28%;
  transform: rotate(8deg);
}

.ai-route-line-mid {
  top: 50%;
}

.ai-route-line-bottom {
  top: 72%;
  transform: rotate(-8deg);
}

.ai-route-node {
  position: absolute;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border: 1px solid var(--color-accent-dark);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  box-shadow: 0 0 0 5px var(--color-bg);
}

.ai-route-node::after {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 13px var(--color-accent-glow);
  content: "";
}

.ai-node-entry {
  top: calc(50% - 12px);
  left: 5%;
}

.ai-node-core {
  top: calc(50% - 12px);
  left: calc(50% - 12px);
}

.ai-node-exit {
  top: calc(50% - 12px);
  right: 5%;
}

.ai-route-caption {
  position: absolute;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
}

.ai-caption-entry {
  bottom: 24%;
  left: 3%;
}

.ai-caption-core {
  top: 35%;
  left: 50%;
  transform: translateX(-50%);
}

.ai-caption-exit {
  right: 3%;
  bottom: 24%;
}

.ai-board-footer {
  position: relative;
  z-index: 3;
  display: flex;
  height: 42px;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
  padding: 0 20px;
  color: var(--color-text-dim);
  border-top: 1px solid var(--color-border);
  background: var(--color-panel-deep);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
}

.ai-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(300px, 0.58fr);
  align-items: end;
  gap: clamp(32px, 7vw, 96px);
  margin-bottom: 52px;
}

.ai-section-heading .kicker {
  margin-bottom: 18px;
}

.ai-section-heading h2 {
  max-width: 720px;
  margin-bottom: 0;
}

.ai-section-heading > p {
  max-width: 560px;
  margin-bottom: 4px;
}

.ai-condition-browser {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.ai-condition-index {
  display: grid;
  align-content: start;
  padding: 22px 14px;
  border-right: 1px solid var(--color-border);
  background: var(--color-panel-deep);
}

.ai-index-item {
  display: flex;
  min-height: 48px;
  align-items: center;
  padding: 0 13px;
  color: var(--color-text-dim);
  border-bottom: 1px solid var(--color-border-soft);
  font-family: var(--font-mono);
  font-size: 11px;
}

.ai-index-item.active {
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dark);
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
}

.ai-condition-detail {
  min-width: 0;
  padding: 8px 30px;
}

.ai-detail-row {
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr);
  gap: 24px;
  padding: 27px 0;
}

.ai-detail-row + .ai-detail-row {
  border-top: 1px solid var(--color-border);
}

.ai-detail-mark {
  padding-top: 7px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.ai-detail-row h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.ai-detail-row p {
  margin-bottom: 0;
}

.ai-tool-ledger {
  border-top: 1px solid var(--color-border);
}

.ai-tool-record {
  display: grid;
  grid-template-columns: var(--ai-record-name) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 86px);
  padding: 38px 0;
  border-bottom: 1px solid var(--color-border);
}

.ai-tool-name {
  min-width: 0;
}

.ai-tool-name .badge {
  margin-bottom: 16px;
}

.ai-tool-name h3 {
  margin-bottom: 0;
}

.ai-tool-copy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.ai-tool-copy p {
  margin-bottom: 0;
}

.ai-matrix-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
  -webkit-overflow-scrolling: touch;
}

.ai-matrix {
  min-width: var(--ai-matrix-min-width);
  margin-bottom: 0;
}

.ai-matrix thead {
  background: var(--color-panel-deep);
}

.ai-matrix th {
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.ai-matrix td:first-child {
  color: var(--color-text);
}

.ai-matrix tbody tr:hover {
  background: var(--color-panel-raised);
}

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

.ai-note-panel {
  position: relative;
  overflow: hidden;
}

.ai-note-panel::after {
  position: absolute;
  right: -100px;
  bottom: -130px;
  width: 250px;
  height: 250px;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-soft), var(--color-transparent) 68%);
  content: "";
  pointer-events: none;
}

.ai-note-panel > * {
  position: relative;
  z-index: 2;
}

.ai-note-label {
  display: block;
  margin-bottom: 28px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.ai-note-panel h3 {
  font-size: clamp(24px, 3vw, 34px);
}

.ai-note-panel p:last-child {
  margin-bottom: 0;
}

.ai-dev-flow {
  position: relative;
  border-top: 1px solid var(--color-border);
}

.ai-dev-flow::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--ai-dev-code-size) / 2);
  width: 1px;
  background: linear-gradient(var(--color-accent-dark), var(--color-border), var(--color-accent-dark));
  content: "";
}

.ai-dev-step {
  position: relative;
  display: grid;
  grid-template-columns: var(--ai-dev-code-size) minmax(0, 1fr);
  gap: 34px;
  padding: 34px 0;
  border-bottom: 1px solid var(--color-border);
}

.ai-dev-code {
  position: relative;
  z-index: 2;
  display: grid;
  width: var(--ai-dev-code-size);
  height: var(--ai-dev-code-size);
  place-items: center;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dark);
  border-radius: var(--radius-md);
  background: var(--color-panel-deep);
  box-shadow: 0 0 22px var(--color-accent-soft);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.ai-dev-step h3 {
  margin-bottom: 9px;
}

.ai-dev-step p {
  max-width: 890px;
}

.ai-dev-step p:last-child {
  margin-bottom: 0;
}

.ai-failure-list {
  margin-bottom: 30px;
}

.ai-route-decision {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.48fr);
  gap: clamp(36px, 8vw, 110px);
  padding: clamp(30px, 6vw, 64px);
  overflow: hidden;
  border: 1px solid var(--color-accent-dark);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, var(--color-panel-raised), var(--color-panel));
  box-shadow: var(--shadow-panel);
}

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

.ai-decision-copy .kicker {
  margin-bottom: 18px;
}

.ai-decision-copy h2 {
  margin-bottom: 20px;
}

.ai-decision-copy p:last-child {
  margin-bottom: 0;
}

.ai-decision-links {
  position: relative;
  z-index: 2;
  display: grid;
  align-content: center;
  gap: 12px;
}

.ai-decision-link {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 7px 14px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel-deep);
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

.ai-decision-link:hover {
  border-color: var(--color-accent-dark);
  background: var(--color-panel);
  transform: translateX(3px);
}

.ai-link-label {
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.ai-decision-link strong {
  grid-column: 1;
}

.ai-decision-link .button-arrow {
  grid-row: 1 / span 2;
  grid-column: 2;
  color: var(--color-accent);
}

@media (max-width: 1080px) {
  .ai-hero-layout {
    grid-template-columns: minmax(340px, 0.82fr) minmax(480px, 1.18fr);
    gap: 34px;
  }

  .ai-board-body {
    grid-template-columns: 100px minmax(180px, 1fr) 105px;
    gap: 12px;
    padding-inline: 16px;
  }

  .ai-entry,
  .ai-tool {
    padding-inline: 9px;
  }
}

@media (max-width: 900px) {
  .ai-hero {
    min-height: auto;
  }

  .ai-hero-layout {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 64px;
    padding-bottom: 72px;
  }

  .ai-hero-copy {
    max-width: 720px;
  }

  .ai-routing-board {
    width: 100%;
    transform: none;
  }

  .ai-section-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 18px;
  }

  .ai-tool-record {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 34px;
  }

  .ai-tool-copy {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .ai-split-notes,
  .ai-route-decision {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .ai-hero::before {
    top: 30%;
    right: -46%;
    width: 110%;
    height: 55%;
  }

  .ai-hero::after {
    width: 100%;
    height: 48%;
  }

  .ai-hero-layout {
    padding-top: 52px;
  }

  .ai-hero-copy .lead {
    font-size: 17px;
  }

  .ai-routing-board {
    height: 440px;
    border-radius: var(--radius-lg);
  }

  .ai-board-body {
    grid-template-columns: 88px minmax(150px, 1fr) 96px;
    padding-inline: 12px;
  }

  .ai-route-caption,
  .ai-board-footer {
    display: none;
  }

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

  .ai-condition-index {
    display: flex;
    max-width: 100%;
    padding: 8px;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .ai-index-item {
    min-width: max-content;
    padding-inline: 14px;
    border-bottom: 0;
  }

  .ai-condition-detail {
    padding-inline: 22px;
  }

  .ai-detail-row {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .ai-detail-mark {
    padding-top: 0;
  }

  .ai-tool-record {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .ai-tool-name .badge,
  .ai-tool-name h3 {
    margin-bottom: 0;
  }

  .ai-dev-step {
    gap: 22px;
  }

  .ai-route-decision {
    border-radius: var(--radius-lg);
  }
}

@media (max-width: 560px) {
  .ai-routing-board {
    height: 410px;
  }

  .ai-board-title {
    display: none;
  }

  .ai-board-body {
    grid-template-columns: 78px minmax(94px, 1fr) 84px;
    gap: 7px;
    padding: 20px 8px 16px;
  }

  .ai-entry,
  .ai-tool {
    min-height: 40px;
    padding-inline: 7px;
    overflow: hidden;
    font-size: 8px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .ai-column-label {
    font-size: 8px;
  }

  .ai-route-node {
    width: 20px;
    height: 20px;
  }

  .ai-node-entry,
  .ai-node-core,
  .ai-node-exit {
    top: calc(50% - 10px);
  }

  .ai-node-core {
    left: calc(50% - 10px);
  }

  .ai-section-heading {
    margin-bottom: 36px;
  }

  .ai-condition-detail {
    padding-inline: 16px;
  }

  .ai-detail-row {
    padding-block: 22px;
  }

  .ai-dev-flow::before {
    left: 23px;
  }

  .ai-dev-step {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 16px;
  }

  .ai-dev-code {
    width: 46px;
    height: 46px;
    font-size: 8px;
  }

  .ai-route-decision {
    padding: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ai-routing-board,
  .ai-decision-link {
    transform: none;
  }
}