.ig-case-system {
  /* Bridge to site tokens. Do not map --ig-rule (timeline/diagram strokes). */
  --ig-accent: var(--brand, #f39a17);
  --ig-ink: var(--text, #1c2531);
  --ig-surface: var(--surface, #ffffff);
  --ig-border: var(--line, #dde3ec);
  --ig-case-accent: var(--ig-accent, #f39a17);
  --ig-case-accent-dark: var(--ig-accent-dark, #9a5200);
  --ig-case-ink: var(--ig-ink, #1c2531);
  --ig-case-muted: var(--ig-ink-muted, #52606c);
  --ig-case-surface: var(--ig-surface, #ffffff);
  --ig-case-surface-alt: var(--ig-surface-alt, #f4f5f3);
  --ig-case-border: var(--ig-border, #dde3ec);
  --ig-case-rule: var(--ig-rule, #9caab3);
  --ig-case-radius: 18px;
  --ig-case-shadow: 0 16px 42px rgba(23, 33, 43, 0.1);
  color: var(--ig-case-ink);
  font-family: Inter, Avenir, "Helvetica Neue", Arial, "Noto Sans TC", "PingFang HK", "Microsoft JhengHei", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  margin-inline: auto;
  max-width: 1280px;
  padding: clamp(24px, 5vw, 64px) clamp(16px, 3vw, 32px);
}

.ig-case-system *,
.ig-case-system *::before,
.ig-case-system *::after {
  box-sizing: border-box;
}

.ig-case-system img {
  display: block;
  height: auto;
  max-width: 100%;
}

.ig-case-system a {
  color: inherit;
}

.ig-case-system__header {
  margin-bottom: 32px;
  max-width: 760px;
}

.ig-case-system__eyebrow,
.ig-case-growth__eyebrow,
.ig-case-detail__kicker {
  color: var(--ig-case-muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

.ig-case-system__title,
.ig-case-detail__title,
.ig-case-growth__title,
.ig-case-logo-wall__title,
.ig-case-quotes__title {
  color: var(--ig-case-ink);
  line-height: 1.18;
  margin: 0;
}

.ig-case-system__title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: -0.035em;
}

.ig-case-system__intro {
  color: var(--ig-case-muted);
  font-size: 1.08rem;
  margin: 14px 0 0;
}

.ig-case-card-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.ig-case-card-grid > li {
  display: flex;
  min-width: 0;
}

.ig-case-card-grid > li > .ig-case-card {
  width: 100%;
}

.ig-case-card {
  background: var(--ig-case-surface);
  border: 1px solid var(--ig-case-border);
  border-radius: var(--ig-case-radius);
  box-shadow: 0 8px 22px rgba(23, 33, 43, 0.06);
  min-width: 0;
  overflow: hidden;
  transition: box-shadow 180ms ease, transform 180ms ease;
}

.ig-case-card:hover,
.ig-case-card.ig-case-is-hover {
  box-shadow: var(--ig-case-shadow);
  transform: translateY(-4px);
}

.ig-case-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 100%;
  text-decoration: none;
}

.ig-case-card__link:focus-visible,
.ig-case-card.ig-case-is-focus .ig-case-card__link {
  border-radius: calc(var(--ig-case-radius) - 2px);
  outline: 3px solid var(--ig-case-ink);
  outline-offset: -4px;
}

.ig-case-card__media {
  aspect-ratio: 16 / 9;
  background: #dfe4e6;
  margin: 0;
  overflow: hidden;
}

.ig-case-card__media img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.ig-case-card__media--fallback {
  align-items: center;
  background: linear-gradient(145deg, #e7ebec, #cfd8dc);
  display: flex;
  justify-content: center;
}

.ig-case-card__media-mark {
  align-items: center;
  background: var(--ig-case-ink);
  border-radius: 50%;
  color: #fff;
  display: flex;
  font-size: 2rem;
  font-weight: 800;
  height: 78px;
  justify-content: center;
  width: 78px;
}

.ig-case-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.ig-case-tag {
  align-self: flex-start;
  background: #fff0d8;
  border: 1px solid #e7b86e;
  border-radius: 999px;
  color: #6d3a00;
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 14px;
  padding: 6px 10px;
}

.ig-case-card__title {
  display: -webkit-box;
  font-size: 1.28rem;
  line-height: 1.3;
  margin: 0;
  min-height: 3.4em;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.ig-case-card__outcome {
  color: var(--ig-case-ink);
  display: -webkit-box;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 14px 0 22px;
  min-height: 3em;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.ig-case-card__footer {
  align-items: center;
  border-top: 1px solid var(--ig-case-border);
  display: flex;
  justify-content: space-between;
  margin-top: auto;
  min-height: 58px;
  padding-top: 16px;
}

.ig-case-card__arrow {
  align-items: center;
  background: var(--ig-case-accent);
  border-radius: 50%;
  color: var(--ig-case-ink);
  display: flex;
  flex: 0 0 auto;
  font-size: 1.2rem;
  font-weight: 900;
  height: 44px;
  justify-content: center;
  width: 44px;
}

.ig-case-logo-placeholder {
  align-items: center;
  background: #e5e9eb;
  border: 1px solid #cdd4d7;
  border-radius: 8px;
  color: #394854;
  display: inline-flex;
  font-size: 0.7rem;
  font-weight: 800;
  justify-content: center;
  min-height: 36px;
  min-width: 44px;
  padding: 6px 10px;
}

.ig-case-logo-placeholder--wide {
  min-width: 150px;
}

.ig-case-logo-wall .ig-case-logo-placeholder {
  max-width: 100%;
  min-width: 0;
}

.ig-case-logo-wall .ig-case-logo-placeholder--wide {
  width: 150px;
}

.ig-case-logo-stack {
  display: flex;
  gap: 6px;
}

.ig-case-confidential-chip {
  align-items: center;
  background: #eef1f2;
  border: 1px solid #c8d0d4;
  border-radius: 999px;
  color: #263642;
  display: inline-flex;
  font-size: 0.76rem;
  font-weight: 800;
  gap: 8px;
  line-height: 1.2;
  padding: 8px 12px;
}

.ig-case-card--loading {
  pointer-events: none;
}

.ig-case-skeleton {
  animation: ig-case-pulse 1.5s ease-in-out infinite;
  background: #dce2e4;
  border-radius: 8px;
  display: block;
}

.ig-case-skeleton--media { aspect-ratio: 16 / 9; border-radius: 0; }
.ig-case-skeleton--tag { height: 28px; margin-bottom: 16px; width: 96px; }
.ig-case-skeleton--title { height: 24px; margin-bottom: 10px; width: 86%; }
.ig-case-skeleton--line { height: 18px; margin-bottom: 8px; width: 100%; }
.ig-case-skeleton--short { width: 66%; }

@keyframes ig-case-pulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}

.ig-case-detail {
  background: var(--ig-case-surface-alt);
  border-radius: 28px;
  margin-top: 72px;
  padding: clamp(24px, 5vw, 56px);
}

.ig-case-detail__title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.025em;
  max-width: 950px;
}

.ig-case-detail__lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  margin: 20px 0 30px;
  max-width: 880px;
}

.ig-case-detail__media {
  margin: 0 0 32px;
}

.ig-case-detail__media img {
  border-radius: var(--ig-case-radius);
  width: 100%;
}

.ig-case-detail__media figcaption {
  color: var(--ig-case-muted);
  font-size: 0.82rem;
  margin-top: 9px;
}

.ig-case-facts {
  background: var(--ig-case-surface);
  border: 1px solid var(--ig-case-border);
  border-radius: var(--ig-case-radius);
  margin: 0;
  overflow: hidden;
}

.ig-case-facts__row {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(128px, 0.28fr) 1fr;
  padding: 20px 24px;
}

.ig-case-facts__row + .ig-case-facts__row {
  border-top: 1px solid var(--ig-case-border);
}

.ig-case-facts dt {
  color: var(--ig-case-muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ig-case-facts dd {
  margin: 0;
}

.ig-case-facts__row--outcome {
  background: #fff4e2;
  border-left: 8px solid var(--ig-case-accent);
  font-size: 1.08rem;
  font-weight: 800;
}

.ig-case-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 24px 0 0;
}

.ig-case-links a {
  min-height: 44px;
  padding: 9px 0;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.ig-case-links a:focus-visible {
  outline: 3px solid var(--ig-case-ink);
  outline-offset: 3px;
}

.ig-case-logo-wall,
.ig-case-quotes,
.ig-case-stats,
.ig-case-growth,
.ig-case-timeline {
  margin-top: 72px;
}

.ig-case-logo-wall__title,
.ig-case-quotes__title,
.ig-case-growth__title,
.ig-case-timeline__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.ig-case-logo-wall__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.ig-case-logo-wall__item {
  min-width: 0;
}

.ig-case-logo-wall__link,
.ig-case-logo-wall__static {
  align-items: center;
  background: var(--ig-case-surface);
  border: 1px solid var(--ig-case-border);
  border-radius: 14px;
  display: flex;
  height: 124px;
  justify-content: center;
  min-height: 44px;
  padding: 24px;
}

.ig-case-logo-wall__link {
  filter: grayscale(1);
  opacity: 0.72;
  text-decoration: none;
  transition: filter 180ms ease, opacity 180ms ease, transform 180ms ease;
}

.ig-case-logo-wall__link:hover,
.ig-case-logo-wall__link:focus-visible,
.ig-case-logo-wall__item.ig-case-is-hover .ig-case-logo-wall__link,
.ig-case-logo-wall__item.ig-case-is-focus .ig-case-logo-wall__link {
  filter: grayscale(0);
  opacity: 1;
  transform: translateY(-2px);
}

.ig-case-logo-wall__link:focus-visible,
.ig-case-logo-wall__item.ig-case-is-focus .ig-case-logo-wall__link {
  outline: 3px solid var(--ig-case-ink);
  outline-offset: 3px;
}

.ig-case-logo-wall__item--static {
  opacity: 0.62;
}

.ig-case-logo-wall--dark {
  background: var(--ig-case-ink);
  border-radius: 22px;
  color: #fff;
  padding: 24px;
}

.ig-case-logo-wall--dark .ig-case-logo-wall__title {
  color: #fff;
}

.ig-case-logo-wall--dark .ig-case-logo-wall__link,
.ig-case-logo-wall--dark .ig-case-logo-wall__static {
  background: #24323d;
  border-color: #53636f;
}

.ig-case-quote-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 22px;
}

.ig-case-quote {
  background: var(--ig-case-surface);
  border: 1px solid var(--ig-case-border);
  border-radius: var(--ig-case-radius);
  display: flex;
  flex-direction: column;
  margin: 0;
  min-height: 250px;
  padding: 26px;
}

.ig-case-quote::before {
  color: var(--ig-case-accent-dark);
  content: "“";
  font-family: Georgia, "Noto Serif TC", "Noto Sans TC", "PingFang HK", "Microsoft JhengHei", "Noto Serif SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", serif;
  font-size: 3.8rem;
  font-weight: 700;
  height: 42px;
  line-height: 0.9;
}

.ig-case-quote--review::before {
  content: none;
}

.ig-case-quote blockquote {
  font-size: 1.04rem;
  font-weight: 650;
  margin: 12px 0 28px;
}

.ig-case-quote figcaption {
  display: flex;
  flex-direction: column;
  margin-top: auto;
}

.ig-case-quote figcaption span {
  color: var(--ig-case-muted);
  font-size: 0.82rem;
}

.ig-case-review-stars {
  color: #8a4b00;
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.ig-case-stats {
  background: var(--ig-case-ink);
  border-radius: 24px;
  color: #fff;
  padding: clamp(24px, 4vw, 40px);
}

.ig-case-stats__grid {
  display: grid;
  gap: 0;
  margin: 0;
}

.ig-case-stats__grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ig-case-stats__grid--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.ig-case-stats__grid--five { grid-template-columns: repeat(5, minmax(0, 1fr)); }

.ig-case-stat {
  display: flex;
  flex-direction: column-reverse;
  min-width: 0;
  padding: 10px 24px;
}

.ig-case-stat + .ig-case-stat {
  border-left: 1px solid #55636e;
}

.ig-case-stat dt {
  color: #dce2e5;
  font-size: 0.82rem;
}

.ig-case-stat dd {
  color: var(--ig-case-accent);
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 850;
  letter-spacing: -0.045em;
  line-height: 1;
  margin: 0 0 10px;
}

.ig-case-growth {
  background: var(--ig-case-surface-alt);
  border: 1px solid var(--ig-case-border);
  border-radius: 24px;
  padding: clamp(24px, 4vw, 42px);
}

.ig-case-growth__header {
  margin-bottom: 26px;
}

.ig-case-growth__pairs {
  display: grid;
  gap: 14px;
  margin: 0;
}

.ig-case-growth__pair {
  align-items: stretch;
  background: var(--ig-case-surface);
  border: 1px solid var(--ig-case-border);
  border-radius: 16px;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr) 52px minmax(0, 1.25fr);
  padding: 18px;
}

.ig-case-growth__value {
  margin: 0;      /* dl default margin reset */
  min-width: 0;
}

.ig-case-growth__value dt {
  color: var(--ig-case-muted);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ig-case-growth__value dd {
  align-items: baseline;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 2px 0 0;
}

.ig-case-growth__value strong {
  font-size: clamp(2rem, 5vw, 3.25rem);
  letter-spacing: -0.045em;
  line-height: 1;
}

.ig-case-growth__value span {
  color: var(--ig-case-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.ig-case-growth__value--after {
  background: #fff4e2;
  border-radius: 12px;
  padding: 12px 16px;
}

.ig-case-growth__direction {
  align-items: center;
  border-radius: 50%;
  color: var(--ig-case-ink);
  display: flex;
  font-size: 1.6rem;
  font-weight: 900;
  height: 44px;
  justify-content: center;
  margin: auto;
  width: 44px;
}

.ig-case-growth__pair--up .ig-case-growth__direction {
  background: var(--ig-case-accent);
}

.ig-case-growth__pair--down .ig-case-growth__direction {
  background: #c7d7df;
}

.ig-case-sr-only {
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.ig-case-timeline {
  background: var(--ig-case-surface-alt);
  border: 1px solid var(--ig-case-border);
  border-radius: 24px;
  padding: clamp(24px, 4vw, 42px);
}

.ig-case-timeline__header {
  margin-bottom: 30px;
  max-width: 780px;
}

.ig-case-timeline__eyebrow {
  color: var(--ig-case-muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

.ig-case-timeline__title {
  color: var(--ig-case-ink);
  line-height: 1.18;
  margin: 0;
}

.ig-case-timeline__intro {
  color: var(--ig-case-muted);
  margin: 10px 0 0;
}

.ig-case-timeline__list {
  display: grid;
  gap: 0;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.ig-case-timeline__list::before {
  background: var(--ig-case-rule);
  content: "";
  height: 2px;
  inset: 31px 4% auto;
  position: absolute;
}

.ig-case-timeline__item {
  min-width: 0;
  padding: 0 12px;
  position: relative;
  text-align: center;
}

.ig-case-timeline__item::before {
  background: var(--ig-case-surface);
  border: 5px solid var(--ig-case-accent);
  border-radius: 50%;
  content: "";
  display: block;
  height: 18px;
  margin: 23px auto 18px;
  position: relative;
  width: 18px;
  z-index: 1;
}

.ig-case-timeline__year {
  color: var(--ig-case-ink);
  display: block;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 850;
  letter-spacing: -0.035em;
  line-height: 1;
  position: absolute;
  top: -2px;
  width: calc(100% - 24px);
}

.ig-case-timeline__milestone {
  color: var(--ig-case-muted);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.45;
  margin: 0 auto;
  max-width: 17rem;
}

[lang="zh-Hant"] .ig-case-system,
.ig-case-system[lang="zh-Hant"] {
  line-height: 1.72;
}

@media (max-width: 1023px) {
  .ig-case-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ig-case-logo-wall__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ig-case-quote-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ig-case-stats__grid--five { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 24px; }
  .ig-case-stats__grid--five .ig-case-stat:nth-child(4) { border-left: 0; }
}

@media (max-width: 767px) {
  .ig-case-card-grid,
  .ig-case-quote-grid { grid-template-columns: 1fr; }
  .ig-case-logo-wall__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ig-case-facts__row { gap: 6px; grid-template-columns: 1fr; }
  .ig-case-facts__row--outcome { border-left-width: 6px; }
  .ig-case-stats__grid--three,
  .ig-case-stats__grid--four,
  .ig-case-stats__grid--five { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ig-case-stat { border-left: 0; padding: 18px 12px; }
  .ig-case-stat + .ig-case-stat { border-left: 0; }
  .ig-case-stat:nth-child(even) { border-left: 1px solid #55636e; }
  .ig-case-stat:nth-child(n+3) { border-top: 1px solid #55636e; }
  .ig-case-growth__pair {
    grid-template-columns: 1fr 44px 1fr;
  }
  .ig-case-growth__value dd { align-items: flex-start; flex-direction: column; gap: 3px; }
  .ig-case-growth__value--after { padding: 10px; }
  .ig-case-timeline__list {
    display: block;
    padding-left: 34px;
  }
  .ig-case-timeline__list::before {
    height: auto;
    inset: 9px auto 9px 8px;
    width: 2px;
  }
  .ig-case-timeline__item {
    min-height: 92px;
    padding: 0 0 24px 14px;
    text-align: left;
  }
  .ig-case-timeline__item::before {
    height: 18px;
    left: -35px;
    margin: 2px 0 0;
    position: absolute;
    top: 0;
    width: 18px;
  }
  .ig-case-timeline__year {
    font-size: 1.4rem;
    position: static;
    width: auto;
  }
  .ig-case-timeline__milestone { margin: 7px 0 0; }
}

@media (max-width: 420px) {
  .ig-case-system { padding-inline: 14px; }
  .ig-case-card__body { padding: 20px; }
  .ig-case-detail { padding: 22px 18px; }
  .ig-case-logo-wall__grid { grid-template-columns: 1fr 1fr; }
  .ig-case-logo-wall__link,
  .ig-case-logo-wall__static { height: 104px; padding: 14px; }
  .ig-case-growth { padding: 20px 14px; }
  .ig-case-growth__pair { gap: 7px; padding: 12px 8px; }
  .ig-case-growth__direction { font-size: 1.25rem; height: 36px; width: 36px; }
  .ig-case-growth__value strong { font-size: 2rem; }
  .ig-case-growth__value span { font-size: 0.76rem; }
  .ig-case-timeline { padding: 20px 16px; }
  .ig-case-timeline__list { padding-left: 30px; }
  .ig-case-timeline__item::before { left: -31px; }
}

@media (prefers-reduced-motion: reduce) {
  .ig-case-card,
  .ig-case-logo-wall__link,
  .ig-case-skeleton { animation: none; transition: none; }
}
/* ==========================================================================
   Component 09 — system diagram (ig-case-diagram)
   Replaces the "interface screenshot" assets with live, bilingual, quotable
   markup. Two variants:
     .ig-case-diagram--flow     sequential stages   (enrolment → receipt, referral → report)
     .ig-case-diagram--modules  parts of a system   (ERP modules, simulator subsystems)
   No JS. No images. All labels are live text supplied from page data.
   ========================================================================== */

.ig-case-diagram {
  background: var(--ig-case-surface-alt);
  border: 1px solid var(--ig-case-border);
  border-radius: 24px;
  padding: clamp(24px, 4vw, 42px);
}

.ig-case-diagram__header {
  margin-bottom: 30px;
  max-width: 780px;
}

.ig-case-diagram__eyebrow {
  color: var(--ig-case-muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

.ig-case-diagram__title {
  color: var(--ig-case-ink);
  line-height: 1.18;
  margin: 0;
}

.ig-case-diagram__intro {
  color: var(--ig-case-muted);
  margin: 10px 0 0;
}

/* --- caption -------------------------------------------------------------
   Structural, not optional. The component renders it whether or not the page
   data supplies one, so an illustrative diagram can never be published
   without the disclaimer that makes it obviously not a screenshot.
   ------------------------------------------------------------------------ */
.ig-case-diagram__caption {
  border-top: 1px solid var(--ig-case-border);
  color: var(--ig-case-muted);
  font-size: 0.8rem;
  line-height: 1.5;
  margin: 26px 0 0;
  padding-top: 14px;
}

.ig-case-diagram__caption::before {
  content: "◆";
  color: var(--ig-case-accent);
  font-size: 0.7em;
  margin-inline-end: 8px;
  vertical-align: 1px;
}

/* --- variant: flow ------------------------------------------------------- */

.ig-case-diagram__flow {
  counter-reset: ig-case-step;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.ig-case-diagram__step {
  background: var(--ig-case-surface);
  border: 1px solid var(--ig-case-border);
  border-radius: var(--ig-case-radius);
  counter-increment: ig-case-step;
  min-width: 0;
  padding: 20px 18px 18px;
  position: relative;
}

/* connector between stages — decorative only, hidden from assistive tech */
.ig-case-diagram__step + .ig-case-diagram__step::before {
  background: var(--ig-case-rule);
  content: "";
  height: 2px;
  inset-inline-start: -18px;
  position: absolute;
  top: 38px;
  width: 18px;
}

.ig-case-diagram__step-index {
  align-items: center;
  background: var(--ig-case-surface-alt);
  border: 2px solid var(--ig-case-accent);
  border-radius: 50%;
  color: var(--ig-case-ink);
  display: flex;
  font-size: 0.85rem;
  font-weight: 800;
  height: 30px;
  justify-content: center;
  margin-bottom: 14px;
  width: 30px;
}

.ig-case-diagram__step-title {
  color: var(--ig-case-ink);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 6px;
}

.ig-case-diagram__step-note {
  color: var(--ig-case-muted);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

/* --- variant: modules ---------------------------------------------------- */

.ig-case-diagram__core {
  align-items: center;
  background: var(--ig-case-ink);
  border-radius: var(--ig-case-radius);
  color: var(--ig-case-surface);
  display: flex;
  flex-direction: column;
  gap: 4px;
  justify-content: center;
  margin-bottom: 22px;
  padding: 20px 24px;
  text-align: center;
}

.ig-case-diagram__core-label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  opacity: 0.75;
  text-transform: uppercase;
}

.ig-case-diagram__core-name {
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  font-weight: 850;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.ig-case-diagram__modules {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.ig-case-diagram__module {
  background: var(--ig-case-surface);
  border: 1px solid var(--ig-case-border);
  border-radius: var(--ig-case-radius);
  min-width: 0;
  padding: 16px 18px;
}

.ig-case-diagram__module--lead {
  border-color: var(--ig-case-accent);
  border-width: 2px;
}

.ig-case-diagram__module-name {
  color: var(--ig-case-ink);
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 5px;
}

.ig-case-diagram__module-note {
  color: var(--ig-case-muted);
  font-size: 0.85rem;
  line-height: 1.5;
  margin: 0;
}

/* --- responsive ---------------------------------------------------------- */

@media (max-width: 767px) {
  .ig-case-diagram__flow,
  .ig-case-diagram__modules {
    grid-template-columns: 1fr;
  }
  /* stack: connector moves from the left edge to the top */
  .ig-case-diagram__step + .ig-case-diagram__step::before {
    height: 18px;
    inset-inline-start: 34px;
    top: -18px;
    width: 2px;
  }
}

/* --- high-contrast / forced-colors --------------------------------------
   The accent ring and connector are decorative and fall below 3:1; in forced
   colors they resolve to system colours so the structure survives.
   ------------------------------------------------------------------------ */
@media (forced-colors: active) {
  .ig-case-diagram__step,
  .ig-case-diagram__module,
  .ig-case-diagram__core { border: 1px solid CanvasText; }
  .ig-case-diagram__step-index { border-color: CanvasText; }
  .ig-case-diagram__step + .ig-case-diagram__step::before { background: CanvasText; }
}