/* Customer-case collection and detail styles. */
.case-list {
  display: grid;
  gap: 30px;
}

.article-hero h1 {
  font-size: clamp(36px, 4.2vw, 54px);
}

.case-ledger {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.case-ledger-head,
.case-ledger-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 15px 20px;
  font: 700 10px/1.5 var(--font-data);
  letter-spacing: 0.08em;
}
.case-ledger-head {
  border-bottom: 1px solid var(--line-dark);
  background: var(--ops-navy);
  color: #a9bac6;
}
.case-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #ffd2be;
}
.case-status i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff8f5b;
  box-shadow: 0 0 0 4px rgba(255, 143, 91, 0.14);
}
.case-ledger-main {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  min-height: 330px;
}
.case-ledger-title {
  padding: 42px;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(rgba(33, 85, 215, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(33, 85, 215, 0.035) 1px, transparent 1px),
    #fbfdff;
  background-size: 24px 24px;
}
.case-ledger-title > p:first-child {
  margin: 0 0 34px;
  color: var(--copper);
  font: 700 10px/1.4 var(--font-data);
  letter-spacing: 0.08em;
}
.case-ledger-title h3 {
  max-width: 500px;
  margin: 0 0 18px;
  font-size: clamp(25px, 3vw, 38px);
  line-height: 1.25;
  letter-spacing: -0.025em;
}
.case-ledger-title > p:last-child {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.case-proof-grid {
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  margin: 0;
}
.case-proof-grid div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 26px;
  align-items: center;
  padding: 25px 32px;
}
.case-proof-grid div + div {
  border-top: 1px solid var(--line);
}
.case-proof-grid dt {
  color: var(--cobalt);
  font: 700 11px/1.4 var(--font-data);
  letter-spacing: 0.04em;
}
.case-proof-grid dd {
  margin: 0;
  color: #405766;
  font-size: 14px;
}
.case-ledger-foot {
  border-top: 1px solid var(--line);
  background: #f4f8fa;
  letter-spacing: 0;
}
.case-ledger-foot p {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 12px;
}

.case-ledger-foot .text-link {
  min-height: 44px;
  padding-inline: 4px;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0;
}

.case-deliverable-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--line);
  box-shadow: var(--shadow);
  gap: 1px;
}

.case-deliverable-grid article {
  min-height: 190px;
  padding: 28px;
  background: #fff;
}

.case-deliverable-grid article > span {
  display: block;
  margin-bottom: 34px;
  color: var(--cobalt);
  font: 700 10px/1.4 var(--font-data);
  letter-spacing: 0.08em;
}

.case-deliverable-grid h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.case-deliverable-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.template-sheet {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  box-shadow: var(--shadow);
}

.template-sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--line-dark);
  background: var(--ops-navy);
  color: #b7c8d3;
  font: 700 10px/1.5 var(--font-data);
  letter-spacing: 0.08em;
}

.template-sheet-head span:last-child {
  color: #ffbc9d;
}

.template-sheet ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: case-field;
}

.template-sheet li {
  counter-increment: case-field;
  display: grid;
  grid-template-columns: 34px minmax(140px, 0.65fr) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  min-height: 84px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}

.template-sheet li:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.template-sheet li:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.template-sheet li::before {
  content: counter(case-field, decimal-leading-zero);
  color: var(--copper);
  font: 700 10px/1.4 var(--font-data);
  letter-spacing: 0.05em;
}

.template-sheet b {
  color: var(--ink);
  font-size: 14px;
}

.template-sheet li span {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1050px) {
  .case-ledger-main {
    grid-template-columns: 1fr;
  }
  .case-ledger-title {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .case-deliverable-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .article-hero h1 {
    font-size: clamp(32px, 9vw, 36px);
  }

  .case-ledger-head,
  .case-ledger-foot {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
  .case-ledger-title {
    padding: 28px 22px;
  }
  .case-proof-grid div {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 20px 22px;
  }

  .template-sheet-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .template-sheet ol {
    grid-template-columns: 1fr;
  }

  .template-sheet li {
    grid-template-columns: 30px 1fr;
    gap: 6px 12px;
  }

  .template-sheet li:nth-child(odd) {
    border-right: 0;
  }

  .template-sheet li:nth-last-child(2) {
    border-bottom: 1px solid var(--line);
  }

  .template-sheet li span {
    grid-column: 2;
  }

  .case-deliverable-grid {
    grid-template-columns: 1fr;
  }

  .case-deliverable-grid article {
    min-height: 0;
    padding: 24px 22px;
  }

  .case-deliverable-grid article > span {
    margin-bottom: 20px;
  }
}

/* 2026-08-25 case system: two business tracks, image-led summaries and grouped workflows. */
.case-system {
  --case-night: #0b2234;
  --case-blue: #2355d2;
  --case-sky: #eaf3fb;
  --case-paper: #f5f8fb;
  --case-line: rgba(100, 130, 150, 0.28);
  background: var(--case-paper);
}

.case-system :where(h1, h2, h3) {
  text-wrap: balance;
}

.case-overview-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(62px, 8vw, 102px) 0;
  background:
    radial-gradient(circle at 84% 18%, rgba(35, 85, 210, 0.15), transparent 29%),
    linear-gradient(rgba(35, 85, 210, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 85, 210, 0.035) 1px, transparent 1px),
    #f3f7fa;
  background-size: auto, 32px 32px, 32px 32px, auto;
}

.case-overview-hero h1 {
  max-width: 850px;
  font-size: clamp(38px, 5vw, 56px);
}

.case-overview-hero .lead {
  max-width: 800px;
  font-size: 17px;
}

.case-showcase-list {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
}

.case-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  overflow: hidden;
  border: 1px solid var(--case-line);
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 22px 58px rgba(10, 38, 61, 0.09);
}

.case-showcase.reverse {
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
}

.case-showcase.reverse .case-showcase-visual {
  order: 2;
}

.case-showcase-visual,
.case-hero-visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: #dfe8ee;
}

.case-showcase-visual img,
.case-hero-visual img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.case-showcase-visual figcaption,
.case-hero-visual figcaption {
  position: absolute;
  right: 14px;
  bottom: 12px;
  left: 14px;
  padding: 8px 11px;
  border-radius: 10px;
  background: rgba(7, 28, 45, 0.82);
  color: #eef6fa;
  font-size: 10px;
  backdrop-filter: blur(9px);
}

.case-showcase-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: clamp(28px, 4.5vw, 52px);
}

.case-showcase-label {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--case-blue);
  font: 750 10px/1.4 var(--font-data);
  letter-spacing: 0.09em;
}

.case-showcase-copy h3 {
  margin: 0 0 16px;
  font-size: clamp(27px, 3vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.03em;
}

.case-showcase-copy > p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.case-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0;
  overflow: hidden;
  border: 1px solid var(--case-line);
  border-radius: 16px;
  background: var(--case-line);
}

.case-facts div {
  min-width: 0;
  padding: 14px 16px;
  background: #f6f9fb;
}

.case-facts dt,
.case-snapshot-grid dt {
  margin-bottom: 5px;
  color: var(--case-blue);
  font: 750 9px/1.4 var(--font-data);
  letter-spacing: 0.08em;
}

.case-facts dd,
.case-snapshot-grid dd {
  margin: 0;
  color: #314a5b;
  font-size: 12px;
}

.case-showcase-copy .button {
  align-self: flex-start;
  margin-top: auto;
}

.case-asset-groups,
.case-policy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.case-asset-groups article {
  min-height: 220px;
  padding: 30px;
  border: 1px solid rgba(164, 191, 208, 0.22);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.055);
}

.case-asset-groups span,
.case-policy-grid span {
  color: #7fb7ff;
  font: 750 9px/1.4 var(--font-data);
  letter-spacing: 0.09em;
}

.case-asset-groups h3,
.case-policy-grid h3 {
  margin: 58px 0 10px;
  font-size: 21px;
}

.case-asset-groups p {
  margin: 0;
  color: #b8c8d2;
  font-size: 13px;
}

.case-policy-grid article {
  min-height: 230px;
  padding: 30px;
  border: 1px solid var(--case-line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
}

.case-policy-grid span {
  color: var(--case-blue);
}

.case-policy-grid h3 {
  color: var(--ink);
}

.case-policy-grid p,
.case-policy-link {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.case-policy-link {
  margin-top: 24px;
}

.case-policy-link a {
  color: var(--case-blue);
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Detail-page hero and chapter system. */
.case-article-hero {
  padding: clamp(46px, 6vw, 78px) 0;
  background:
    radial-gradient(circle at 87% 12%, rgba(35, 85, 210, 0.16), transparent 31%),
    #edf3f7;
}

.case-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
}

.case-hero-copy {
  min-width: 0;
}

.case-detail .case-hero-copy h1 {
  margin: 0;
  font-size: clamp(36px, 4.3vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.case-detail .article-deck {
  max-width: 680px;
  font-size: 16px;
}

.case-hero-visual {
  border: 1px solid rgba(88, 118, 139, 0.35);
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(10, 38, 61, 0.14);
}

.case-detail .article-layout {
  grid-template-columns: 210px minmax(0, 820px);
  gap: clamp(34px, 5vw, 64px);
}

.case-detail .article-toc {
  padding: 18px;
  border: 1px solid var(--case-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 12px 32px rgba(10, 38, 61, 0.06);
  backdrop-filter: blur(12px);
}

.case-detail .article-toc a {
  padding: 8px 0;
}

.case-content-section {
  padding-top: 58px;
  border-top: 1px solid var(--case-line);
  scroll-margin-top: 96px;
}

.case-content-section + .case-content-section {
  margin-top: 58px;
}

.case-content-section.case-snapshot {
  padding-top: 0;
  border-top: 0;
}

.case-detail .case-content-section > h2,
.case-related > h2 {
  margin: 0 0 22px;
  font-size: clamp(27px, 3.3vw, 36px);
  line-height: 1.2;
}

.case-section-code {
  margin: 0 0 12px;
  color: var(--case-blue) !important;
  font: 750 9px/1.4 var(--font-data);
  letter-spacing: 0.1em;
}

.case-detail .answer-box {
  margin-bottom: 22px;
  padding: 25px 28px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(35, 85, 210, 0.11), rgba(103, 185, 232, 0.08));
}

.case-detail .answer-box h2 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 18px;
}

.case-source-note {
  margin: 0 0 24px;
  padding-left: 16px;
  border-left: 3px solid var(--case-blue);
  color: var(--muted) !important;
  font-size: 13px;
}

.case-snapshot-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 24px;
  overflow: hidden;
  border: 1px solid var(--case-line);
  border-radius: 18px;
  background: var(--case-line);
}

.case-snapshot-grid div {
  min-width: 0;
  padding: 16px;
  background: #f7fafc;
}

.case-system-map {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 10px;
  align-items: center;
  padding: 18px;
  border-radius: 20px;
  background: var(--case-night);
}

.case-system-map > span {
  display: grid;
  gap: 6px;
  place-items: center;
  min-height: 76px;
  padding: 12px;
  border: 1px solid rgba(170, 208, 231, 0.22);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  color: #f1f7fa;
  text-align: center;
  font-size: 12px;
}

.case-system-map > span b {
  color: #7fb7ff;
  font: 750 9px/1 var(--font-data);
  letter-spacing: 0.08em;
}

.case-system-map > i {
  color: #7fb7ff;
  font-style: normal;
}

.case-system-map .map-core {
  background: rgba(35, 85, 210, 0.26);
}

.case-map-summary {
  margin: 12px 0 0;
  color: var(--muted) !important;
  font-size: 12px;
}

.case-issue-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.case-issue-grid article {
  min-height: 190px;
  padding: 24px;
  border-radius: 18px;
  background: #f0f5f9;
}

.case-issue-grid article:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  min-height: 0;
}

.case-issue-grid span,
.case-asset-grid article > span {
  color: var(--case-blue);
  font: 750 9px/1.4 var(--font-data);
  letter-spacing: 0.08em;
}

.case-detail .case-issue-grid h3 {
  margin: 34px 0 8px;
  font-size: 18px;
}

.case-issue-grid p {
  margin: 0;
  font-size: 13px;
}

.case-workflow-stack {
  margin-top: 28px;
  border-top: 1px solid var(--case-line);
}

.case-workflow-stack article {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 22px;
  padding: 30px 0;
  border-bottom: 1px solid var(--case-line);
}

.workflow-number {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--case-night);
  color: #fff;
  font: 750 11px/1 var(--font-data);
}

.case-detail .case-workflow-stack h3 {
  margin: 0 0 8px;
  font-size: 21px;
}

.case-workflow-stack p {
  margin: 0;
}

.case-workflow-stack ul,
.case-asset-grid ul,
.case-mechanism-band ul {
  margin: 14px 0 0;
  padding-left: 18px;
}

.case-workflow-stack li,
.case-asset-grid li,
.case-mechanism-band li {
  margin: 6px 0;
  font-size: 13px;
}

.case-asset-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.case-asset-grid article {
  min-width: 0;
  padding: 23px;
  border: 1px solid var(--case-line);
  border-radius: 18px;
  background: #fff;
}

.case-detail .case-asset-grid h3 {
  margin: 30px 0 10px;
  font-size: 18px;
}

.case-asset-grid ul {
  padding-left: 16px;
}

.case-mechanism-band {
  margin-top: 16px;
  padding: 28px;
  border-radius: 20px;
  background: var(--case-night);
  color: #f3f8fa;
}

.case-detail .case-mechanism-band h3 {
  margin: 0;
  color: #fff;
  font-size: 19px;
}

.case-mechanism-band ul {
  columns: 2;
  gap: 34px;
}

.case-mechanism-band li {
  break-inside: avoid;
  color: #c0d0da;
}

.case-detail .article-note {
  margin-top: 16px;
  border: 0;
  border-radius: 16px;
  background: #e8f1f8;
  color: #365064;
  font-size: 12px;
}

.case-detail .boundary-note {
  margin-bottom: 18px;
  border: 0;
  border-left: 4px solid var(--case-blue);
  border-radius: 0 16px 16px 0;
  background: #eaf2fb;
  box-shadow: none;
}

.case-detail .boundary-note p {
  color: #405b70;
}

.case-detail .faq-list {
  max-width: none;
}

.case-detail .faq-list details {
  border-color: var(--case-line);
}

.case-detail .faq-list summary {
  min-height: 52px;
}

.case-related {
  margin-top: 58px;
  padding-top: 58px;
  border-top: 1px solid var(--case-line);
}

.case-related > div {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.case-related a {
  display: grid;
  gap: 18px;
  min-height: 130px;
  padding: 20px;
  border: 1px solid var(--case-line);
  border-radius: 16px;
  background: #f5f9fc;
  text-decoration: none;
}

.case-related a:hover {
  border-color: rgba(35, 85, 210, 0.55);
  background: #fff;
}

.case-related span {
  color: var(--case-blue);
  font: 750 9px/1.4 var(--font-data);
  letter-spacing: 0.08em;
}

.case-related strong {
  color: var(--ink);
  font-size: 13px;
}

.case-detail .article-author {
  margin-top: 44px;
  padding: 24px;
  border: 0;
  border-radius: 18px;
  background: #eef4f8;
}

.case-detail .article-author h2 {
  margin: 0 0 5px;
  font-size: 18px;
}

@media (max-width: 1050px) {
  .case-showcase,
  .case-showcase.reverse,
  .case-hero-grid {
    grid-template-columns: 1fr;
  }

  .case-showcase.reverse .case-showcase-visual {
    order: 0;
  }

  .case-hero-visual {
    max-height: 620px;
  }

  .case-asset-groups,
  .case-policy-grid,
  .case-asset-grid {
    grid-template-columns: 1fr;
  }

  .case-asset-groups article,
  .case-policy-grid article {
    min-height: 0;
  }

  .case-asset-groups h3,
  .case-policy-grid h3 {
    margin-top: 32px;
  }
}

/* Keep medium desktops compact without changing the mobile layout. */
@media (min-width: 821px) and (max-width: 1050px) {
  .case-detail .case-article-hero {
    padding: 32px 0;
  }

  .case-detail .case-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 28px;
  }

  .case-detail .case-hero-copy .breadcrumb {
    margin-bottom: 18px;
  }

  .case-detail .case-hero-copy h1 {
    font-size: clamp(34px, 3.7vw, 40px);
  }

  .case-detail .article-deck {
    margin-top: 16px;
  }

  .case-detail .article-meta {
    gap: 6px 14px;
    margin-top: 18px;
  }

  .case-detail .case-hero-visual {
    height: clamp(250px, 27vw, 290px);
    max-height: 290px;
  }

  .case-detail .case-article-hero + .section {
    padding-top: 32px;
  }

  .case-detail .article-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .case-detail .article-toc {
    position: static;
    display: grid;
    grid-template-columns: 80px repeat(6, minmax(0, 1fr));
    gap: 8px;
    align-items: center;
    padding: 12px 16px;
  }

  .case-detail .article-toc strong {
    margin-bottom: 0;
  }

  .case-detail .article-toc a {
    display: flex;
    min-width: 0;
    min-height: 36px;
    align-items: center;
    justify-content: center;
    padding: 8px 6px;
    line-height: 1.5;
    text-align: center;
  }
}

@media (max-width: 820px) {
  .case-detail .article-layout {
    grid-template-columns: 1fr;
  }

  .case-detail .article-toc {
    position: static;
  }

  .case-snapshot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-system-map,
  .case-system-map.pump-system-map {
    grid-template-columns: 1fr;
  }

  .case-system-map > i {
    transform: rotate(90deg);
    text-align: center;
  }

  .case-mechanism-band ul {
    columns: 1;
  }
}

@media (max-width: 620px) {
  .case-overview-hero h1,
  .case-detail .case-hero-copy h1 {
    font-size: clamp(34px, 10vw, 41px);
  }

  .case-showcase,
  .case-hero-visual {
    border-radius: 19px;
  }

  .case-showcase-visual figcaption,
  .case-hero-visual figcaption {
    position: static;
    border-radius: 0;
    background: var(--case-night);
  }

  .case-facts,
  .case-snapshot-grid,
  .case-issue-grid,
  .case-related > div {
    grid-template-columns: 1fr;
  }

  .case-issue-grid article:last-child:nth-child(odd) {
    grid-column: auto;
  }

  .case-workflow-stack article {
    grid-template-columns: 46px 1fr;
    gap: 14px;
  }

  .workflow-number {
    width: 40px;
    height: 40px;
  }

  .case-related a {
    min-height: 0;
  }
}

@media (forced-colors: active) {
  .case-system :where(.case-showcase, .case-hero-visual, .case-policy-grid article, .case-issue-grid article, .case-asset-grid article, .case-related a) {
    border: 1px solid CanvasText;
    box-shadow: none;
  }
}