:root {
  --surface-iphone: #f5f5f7;
  --surface-control: #e8e8ed;
  --surface-focus: rgba(0, 100, 254, .12);
  --paper: var(--surface-iphone);
  --story-surface: var(--surface-iphone);
  --model-line: transparent;
  --model-line-strong: transparent;
  --season-border: transparent;
}

body,
.chapter.light,
.emotion-story,
.emotion-story__sticky,
.season-story {
  background: var(--surface-iphone);
}

/* Brand model: preserve hierarchy through spacing instead of rules. */
.model-logic {
  grid-template-columns: 1fr;
  gap: 18px;
}

.model-axis {
  display: flex;
  justify-content: space-between;
  align-items: center;
  writing-mode: horizontal-tb;
  padding: 0 0 8px;
}

.model-axis i {
  display: none;
}

.model-axis span {
  writing-mode: horizontal-tb;
  transform: none;
}

.model-layers {
  display: grid;
  gap: clamp(10px, 1.4vh, 18px);
}

.model-layer,
.model-layer:first-child {
  min-height: 150px;
  border: 0;
}

/* Proposition tabs: remove divider and progress rules. */
.model-focus__tabs {
  gap: 8px;
}

.model-focus__tab,
.model-focus__tab:first-child {
  border: 0;
  padding: 20px 0;
}

.model-focus__stage {
  padding-left: clamp(8px, 1.5vw, 28px);
  border-left: 0;
}

.model-focus__progress {
  display: none;
}

.model-focus__tab:focus-visible {
  outline: 0;
  background: var(--surface-focus);
}

/* Image boards: images are separated by rhythm, not frames. */
.emotion-story__tone-board figure,
.emotion-story__mosaic figure {
  border: 0;
  background: var(--surface-iphone);
}

/* Seasonal slider: remove borders, underline navigation, and focus rails. */
.season-story__seasons {
  padding: 4px;
  border: 0;
  background: var(--surface-control);
}

.season-slide::after {
  display: none;
}

.season-slider__arrow {
  border: 0;
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .08);
}

.season-story__pages button,
.season-story__pages button[aria-current="page"] {
  border: 0;
}

.season-story__pages button[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

.season-slider__rail:focus-visible {
  outline: 0;
}

.season-story:has(.season-slider__rail:focus-visible) .season-story__status {
  color: var(--blue);
  font-weight: 700;
}

.season-slider__arrow:focus-visible,
.season-story__seasons button:focus-visible,
.season-story__pages button:focus-visible {
  outline: 0;
  background: var(--blue);
  color: var(--white);
}

/* Keep focus visible without reintroducing long decorative outlines. */
.ooh-carousel__controls button:focus-visible {
  outline: 0;
  background: var(--white);
  transform: scale(1.16);
}

@media (max-width: 1100px) {
  .model-focus__tab,
  .model-focus__tab:first-child {
    border: 0;
  }
}

@media (max-width: 760px) {
  .model-axis {
    display: none;
  }

  .model-layers {
    gap: 0;
  }

  .model-layer,
  .model-layer:first-child {
    min-height: 0;
    grid-template-columns: 30px 1fr;
    grid-template-rows: auto auto;
    gap: 10px 14px;
    align-items: start;
    padding: 22px 0;
  }

  .model-layer__number {
    grid-row: 1 / 3;
    padding-top: 4px;
  }

  .model-layer__question {
    grid-column: 2;
    max-width: none;
    font-size: 14px;
    line-height: 1.55;
  }

  .model-focus__tabs {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .model-focus__tab,
  .model-focus__tab:first-child {
    grid-template-columns: 1fr;
    gap: 6px;
    justify-items: center;
    padding: 12px 4px;
    text-align: center;
  }

  .model-focus__tab.is-active {
    transform: none;
    background: rgba(255, 255, 255, .08);
  }

  .model-focus__tab span {
    font-size: 16px;
    white-space: nowrap;
  }

  .model-focus__stage {
    min-height: 360px;
    padding-left: 0;
  }

  .model-focus__answer {
    font-size: clamp(58px, 18vw, 78px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .ooh-carousel__controls button:focus-visible {
    transform: none;
  }
}