.ai-page {
  position: relative;
}

.ai-hero {
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(90deg, transparent, var(--color-water-soft), transparent),
    var(--color-bg);
}

.ai-hero::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  content: "";
  background: var(--color-accent-line);
}

.ai-hero::after {
  position: absolute;
  z-index: 0;
  right: -120px;
  bottom: -220px;
  width: 520px;
  height: 520px;
  border: 1px dashed var(--color-accent-line);
  border-radius: var(--radius-pill);
  content: "";
}

.ai-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  align-items: center;
  min-height: 660px;
  gap: clamp(36px, 7vw, 88px);
}

.ai-hero-copy {
  position: relative;
}

.ai-hero-copy h1 {
  max-width: 10em;
}

.ai-hero-copy .actions {
  margin: 24px 0 22px;
}

.ai-hero-note {
  max-width: 42rem;
  color: var(--color-muted);
}

.ai-facts {
  justify-content: flex-start;
  margin-top: 28px;
}

.ai-flow-panel {
  position: relative;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-small);
  background:
    linear-gradient(180deg, var(--color-white-soft), var(--color-water-soft)),
    var(--color-water);
  box-shadow: var(--shadow-panel);
}

.ai-flow-panel::before {
  position: absolute;
  top: -10px;
  right: 28px;
  left: 28px;
  height: 10px;
  border: 1px solid var(--color-border);
  border-bottom: 0;
  content: "";
  background: var(--color-panel);
}

.ai-flow-heading {
  display: grid;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
  gap: 5px;
}

.ai-flow-heading span {
  color: var(--color-success);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.ai-flow-heading strong {
  font-family: var(--font-display);
  font-size: 24px;
}

.ai-flow {
  position: relative;
  display: grid;
  gap: 12px;
}

.ai-flow::before {
  position: absolute;
  top: 34px;
  bottom: 34px;
  left: 25px;
  border-left: 1px dashed var(--color-accent);
  content: "";
}

.ai-flow-step {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: start;
  padding: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-paper-soft);
  gap: 14px;
}

.ai-flow-mark {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-small);
  color: var(--color-accent);
  background: var(--color-water);
}

.ai-flow-mark svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.ai-flow-step small {
  display: block;
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.ai-flow-step strong {
  display: block;
  margin: 3px 0;
  font-size: 15px;
}

.ai-flow-step p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.6;
}

.ai-tool-tape {
  display: flex;
  flex-wrap: wrap;
  margin-top: 22px;
  gap: 7px;
}

.ai-tool-tape span {
  padding: 5px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  color: var(--color-accent);
  background: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 9px;
}

.ai-document {
  position: relative;
}

.ai-document .toc-tabs {
  margin-top: 34px;
}

.ai-section-head {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.18fr);
  align-items: end;
  margin-bottom: 36px;
  gap: clamp(24px, 5vw, 68px);
}

.ai-section-head p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 17px;
}

.ai-ingredient-list {
  display: grid;
  gap: 14px;
}

.ai-ingredient {
  display: grid;
  grid-template-columns: minmax(170px, 0.34fr) minmax(0, 1fr);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-success);
  border-radius: var(--radius-small);
  background: var(--color-bg);
  box-shadow: 0 8px 0 var(--color-accent-soft);
}

.ai-ingredient:nth-child(even) {
  margin-left: clamp(0px, 6vw, 76px);
  border-left-color: var(--color-error);
  background: var(--color-panel);
}

.ai-ingredient-wide {
  margin-right: clamp(0px, 4vw, 48px);
}

.ai-index {
  display: flex;
  padding: 24px;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--color-border);
  background: var(--color-water-soft);
}

.ai-index span {
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.ai-index strong {
  font-family: var(--font-display);
  font-size: 24px;
}

.ai-ingredient-body {
  padding: clamp(24px, 4vw, 38px);
}

.ai-ingredient-body h3 {
  font-family: var(--font-display);
}

.ai-ingredient-body p:last-child {
  margin-bottom: 0;
}

.ai-table-shell {
  max-width: 100%;
  margin-top: 28px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-bg);
  box-shadow: var(--shadow-panel);
  -webkit-overflow-scrolling: touch;
}

.ai-tool-table {
  min-width: 860px;
  border: 0;
}

.ai-tool-table td:first-child {
  white-space: nowrap;
}

.ai-tool-table tbody tr:nth-child(even) td {
  background: var(--color-water-soft);
}

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

.ai-note-card {
  position: relative;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--color-border);
  border-top: 5px solid var(--color-accent);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.ai-note-card::after {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 28px;
  border-top: 3px solid var(--color-error);
  content: "";
}

.ai-note-card-water {
  background: var(--color-water);
}

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

.ai-reading {
  max-width: var(--reading-max);
}

.ai-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-bg);
  box-shadow: var(--shadow-panel);
}

.ai-compare article {
  padding: clamp(24px, 4vw, 40px);
}

.ai-compare article + article {
  border-left: 1px solid var(--color-border);
  background: var(--color-water-soft);
}

.ai-compare h3 {
  margin-top: 18px;
  font-family: var(--font-display);
}

.ai-compare li {
  color: var(--color-muted);
}

.ai-dev-rows {
  display: grid;
  border-top: 1px solid var(--color-border);
}

.ai-dev-rows article {
  display: grid;
  grid-template-columns: minmax(150px, 0.3fr) minmax(0, 1fr);
  padding: 30px 0;
  border-bottom: 1px solid var(--color-border);
  gap: clamp(26px, 6vw, 80px);
}

.ai-dev-label {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-dev-label span {
  width: fit-content;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  color: var(--color-success);
  background: var(--color-water);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 750;
}

.ai-dev-label strong {
  font-family: var(--font-display);
  font-size: 24px;
}

.ai-dev-rows h3 {
  margin-bottom: 8px;
}

.ai-dev-rows p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.ai-failure-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.ai-failure-list article {
  padding: clamp(22px, 4vw, 34px);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.ai-failure-list article:nth-child(4n + 2),
.ai-failure-list article:nth-child(4n + 3) {
  background: var(--color-panel);
}

.ai-failure-list h3 {
  font-size: 20px;
}

.ai-failure-list p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.ai-selection-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  padding: clamp(28px, 6vw, 58px);
  border: 1px solid var(--color-accent-dark);
  border-left: 8px solid var(--color-error);
  border-radius: var(--radius-small);
  color: var(--color-water);
  background:
    linear-gradient(115deg, var(--color-accent-dark), var(--color-accent));
  box-shadow: var(--shadow-panel);
  gap: clamp(30px, 6vw, 74px);
}

.ai-selection-panel h2 {
  color: var(--color-white);
}

.ai-selection-panel p {
  max-width: 48rem;
  color: var(--color-border);
}

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

.ai-selection-actions {
  display: grid;
  min-width: 180px;
  gap: 10px;
}

.ai-selection-actions .button-primary {
  border-color: var(--color-white);
  color: var(--color-accent-dark);
  background: var(--color-white);
}

.ai-selection-actions .button-primary:hover {
  color: var(--color-white);
  background: var(--color-accent-dark);
}

.ai-selection-actions .button-secondary {
  border-color: var(--color-border);
  color: var(--color-white);
  background: transparent;
}

.ai-selection-actions .button-secondary:hover {
  color: var(--color-white);
  background: var(--color-accent);
}

@media (max-width: 980px) {
  .ai-hero-grid {
    grid-template-columns: 1fr;
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .ai-hero::before {
    display: none;
  }

  .ai-flow-panel {
    width: min(100%, 620px);
    margin-inline: auto;
  }

  .ai-section-head {
    grid-template-columns: 1fr;
    align-items: start;
  }

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

  .ai-selection-actions {
    display: flex;
    min-width: 0;
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .ai-hero-grid {
    min-height: 0;
  }

  .ai-hero::after {
    display: none;
  }

  .ai-hero-copy h1 {
    max-width: 100%;
  }

  .ai-ingredient,
  .ai-ingredient:nth-child(even) {
    grid-template-columns: 1fr;
    margin-right: 0;
    margin-left: 0;
  }

  .ai-index {
    min-height: 94px;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .ai-notes-grid,
  .ai-compare,
  .ai-failure-list {
    grid-template-columns: 1fr;
  }

  .ai-compare article + article {
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }

  .ai-dev-rows article {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .ai-failure-list article:nth-child(odd),
  .ai-failure-list article:nth-child(even) {
    background: var(--color-bg);
  }

  .ai-failure-list article:nth-child(even) {
    background: var(--color-panel);
  }
}

@media (max-width: 640px) {
  .ai-hero-grid {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .ai-flow-panel {
    padding: 18px;
  }

  .ai-flow-step {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 12px;
    gap: 11px;
  }

  .ai-flow-mark {
    width: 44px;
    height: 44px;
  }

  .ai-flow::before {
    left: 21px;
  }

  .ai-flow-step p {
    font-size: 11px;
  }

  .ai-section-head p {
    font-size: 15px;
  }

  .ai-index,
  .ai-ingredient-body,
  .ai-note-card,
  .ai-compare article,
  .ai-failure-list article {
    padding: 20px;
  }

  .ai-selection-panel {
    padding: 24px 20px;
  }

  .ai-selection-actions {
    display: grid;
    width: 100%;
  }

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