/* ===== 场景展示页 · page-cases ===== */

.page-cases .cases-crumb {
  padding-top: var(--space-3);
}

.page-cases .cases-hero {
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
}

.page-cases .hero-ticks {
  height: 14px;
  margin-bottom: var(--space-4);
  background-image:
    repeating-linear-gradient(to right, var(--color-ink-muted) 0, var(--color-ink-muted) 1px, transparent 1px, transparent 96px),
    repeating-linear-gradient(to right, var(--color-line) 0, var(--color-line) 1px, transparent 1px, transparent 24px);
  background-size: 100% 14px, 100% 7px;
  background-position: 0 0, 0 0;
  background-repeat: repeat-x;
}

.page-cases .hero-grid {
  display: grid;
  gap: var(--space-4);
}

.page-cases .cases-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.page-cases .cases-h1 {
  margin: var(--space-2) 0 var(--space-3);
  max-width: 15ch;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

.page-cases .hero-lede {
  margin: 0;
  max-width: 54ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-cases .switch-band {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding-bottom: var(--space-2);
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-cases .switch-link {
  scroll-snap-align: start;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  transition: background 200ms ease, color 200ms ease;
}

.page-cases .switch-link .mono {
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
}

.page-cases .switch-link:hover,
.page-cases .switch-link:focus-visible {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.page-cases .switch-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-cases .hero-figures {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: var(--space-3);
  display: grid;
  gap: var(--space-3);
  background: var(--color-contrast-surface);
  border-radius: var(--radius-md);
  border-bottom: 3px solid var(--color-contrast-accent);
}

.page-cases .fig-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 600;
  line-height: 1;
  color: var(--color-contrast-ink);
}

.page-cases .fig-label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.4;
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.page-cases .hero-media {
  margin: var(--space-6) 0 0;
}

.page-cases .hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 520px;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-cases .hero-media figcaption {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

/* ---------- 分组骨架 ---------- */

.page-cases .group {
  padding-top: var(--section-y);
  scroll-margin-top: var(--space-8);
}

.page-cases .group-head {
  max-width: 62ch;
  margin-bottom: var(--space-4);
}

.page-cases .group-idx {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.page-cases .group-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-cases .group-note {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 场景模块通用 ---------- */

.page-cases .scene {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  scroll-margin-top: var(--space-8);
}

.page-cases .scene--stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-cases .scene--row {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
}

.page-cases .scene-main {
  flex: 1 1 auto;
  min-width: 0;
  display: grid;
  gap: var(--space-2);
}

.page-cases .scene-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-cases .scene--row .scene-idx {
  flex: 0 0 48px;
  padding-top: 4px;
  color: var(--color-accent);
}

.page-cases .scene-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-ink);
}

.page-cases .scene-for {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
}

.page-cases .scene-key {
  display: inline-block;
  margin-right: var(--space-1);
  padding: 0 var(--space-1);
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  line-height: 1.8;
}

.page-cases .scene-body {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-cases .scene-more {
  font-size: var(--text-sm);
}

.page-cases .scene-more summary {
  display: inline-block;
  padding: 2px 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
}

.page-cases .scene-more summary::-webkit-details-marker {
  display: none;
}

.page-cases .scene-more summary::before {
  content: "＋";
  display: inline-block;
  margin-right: 6px;
  font-family: var(--font-mono);
  color: var(--color-accent);
}

.page-cases .scene-more[open] summary::before {
  content: "－";
}

.page-cases .scene-more summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-cases .scene-points {
  margin: var(--space-2) 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.page-cases .scene-out {
  margin: 0;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-highlight);
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink);
}

.page-cases .scene-path {
  margin: auto 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-cases .scene-path a {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-cases .scene-path a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-cases .scene-media {
  margin: 0 0 var(--space-1);
}

.page-cases .scene-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* ---------- 组一：六列矩阵 ---------- */

.page-cases .matrix-a {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
}

.page-cases .matrix-a .scene {
  background: var(--color-surface-alt);
}

/* ---------- 组二：双端对照卡 ---------- */

.page-cases .matrix-b {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
}

.page-cases .matrix-b .scene {
  background: color-mix(in srgb, var(--color-primary-soft) 48%, var(--color-surface));
}

.page-cases .cross {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: minmax(0, 1fr);
}

.page-cases .cross-col {
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.page-cases .cross-key {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-cases .cross-col p:last-child {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink);
}

/* ---------- 组三：编号行列表 ---------- */

.page-cases .matrix-c {
  display: grid;
  gap: 0;
}

.page-cases .matrix-c .scene {
  padding: var(--space-3);
  border-radius: var(--radius-sm);
}

.page-cases .matrix-c .scene:nth-child(odd) {
  background: var(--color-surface-alt);
}

/* ---------- 索引区 ---------- */

.page-cases .idx-media {
  margin: 0 0 var(--space-4);
}

.page-cases .idx-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 11 / 6;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-cases .idx-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-margin-top: var(--space-8);
}

.page-cases .idx-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-cases .idx-table caption {
  padding-bottom: var(--space-2);
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-cases .idx-table th {
  padding: var(--space-2);
  text-align: left;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  background: var(--color-surface-deep);
}

.page-cases .idx-table td {
  padding: var(--space-2);
  border-top: 1px solid var(--color-line);
  vertical-align: top;
  line-height: 1.55;
  color: var(--color-ink);
}

.page-cases .idx-table tbody tr:hover td {
  background: var(--color-highlight);
}

.page-cases .idx-scene {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  text-decoration: none;
}

.page-cases .idx-scene:hover,
.page-cases .idx-scene:focus-visible {
  color: var(--color-accent);
}

.page-cases .idx-col {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px dotted var(--color-line);
  padding-bottom: 2px;
}

.page-cases .idx-col:hover,
.page-cases .idx-col:focus-visible {
  border-bottom-color: var(--color-primary);
}

.page-cases .idx-scene:focus-visible,
.page-cases .idx-col:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 收口：使用建议与边界 ---------- */

.page-cases .bounds {
  display: grid;
  gap: var(--space-4);
}

.page-cases .bounds-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-cases .bounds-list li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-cases .bounds-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 12px;
  height: 1px;
  background: var(--color-accent);
}

.page-cases .bounds-note {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-highlight);
}

.page-cases .bounds-note-tag {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

.page-cases .bounds-note p:last-child {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

/* ---------- 动效 ---------- */

@media (prefers-reduced-motion: no-preference) {
  .page-cases .scene-more[open] .scene-points {
    animation: cases-reveal 240ms ease-out;
  }
}

@keyframes cases-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-cases .switch-link {
    transition: none;
  }
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-cases .cross {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-cases .matrix-a {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-cases .matrix-a .scene:nth-child(1) {
    grid-column: span 4;
  }

  .page-cases .matrix-a .scene:nth-child(2) {
    grid-column: span 2;
  }

  .page-cases .matrix-a .scene:nth-child(3),
  .page-cases .matrix-a .scene:nth-child(4),
  .page-cases .matrix-a .scene:nth-child(5) {
    grid-column: span 2;
  }

  .page-cases .idx-media {
    max-width: 760px;
    margin-left: auto;
  }
}

@media (min-width: 900px) {
  .page-cases .hero-grid {
    grid-template-columns: minmax(0, 1fr) 272px;
    gap: var(--space-6);
    align-items: start;
  }

  .page-cases .hero-figures {
    margin-top: 0;
  }

  .page-cases .matrix-b .scene {
    padding: var(--space-4);
  }

  .page-cases .bounds {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-cases .matrix-b {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-cases .matrix-b .scene:nth-child(1) {
    grid-column: span 7;
  }

  .page-cases .matrix-b .scene:nth-child(2) {
    grid-column: span 5;
  }

  .page-cases .matrix-b .scene:nth-child(3) {
    grid-column: span 5;
  }

  .page-cases .matrix-b .scene:nth-child(4) {
    grid-column: span 7;
  }

  .page-cases .matrix-b .scene:nth-child(5) {
    grid-column: span 12;
  }

  .page-cases .matrix-b .scene:nth-child(5) .cross {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}