.page-home {
  --home-tree-bg: var(--gradient-blue);
  --home-card-bg: var(--c-cream);
  --home-card-border: var(--c-line);
  --home-gold-text: var(--c-gold-light);
  --home-section-gap: clamp(3rem, 7vw, 6rem);
  position: relative;
  background-color: var(--c-cream);
  color: var(--c-ink);
  font-family: var(--f-body);
  line-height: 1.65;
}

.page-home .mono-inline {
  font-family: var(--f-mono);
  font-size: 0.9em;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.page-home .section-heading {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-home .section-heading__index {
  margin: 0.2rem 0 0;
  color: var(--c-gold-dark);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1;
}

.page-home .section-heading__title {
  margin: 0;
  font-family: var(--f-heading);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-deep-blue);
}

.page-home .section-heading__desc {
  margin: 0.5rem 0 0;
  font-size: 1rem;
  color: #3D3A36;
  max-width: 560px;
}

.page-home .section-heading--light .section-heading__title {
  color: var(--c-white);
}

.page-home .section-heading--light .section-heading__desc {
  color: rgba(255, 255, 255, 0.82);
}

.page-home .section-heading--light .section-heading__index {
  color: var(--c-gold-light);
}

.page-home .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: var(--border-w) solid var(--c-deep-blue);
  border-radius: 0;
  font-family: var(--f-body);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-home .btn-primary {
  background: var(--c-deep-blue);
  color: var(--c-white);
}

.page-home .btn-primary:hover {
  background: var(--c-mid-blue);
  color: var(--c-white);
  box-shadow: var(--shadow-hard);
  transform: translate(-1px, -1px);
}

.page-home .btn-gold {
  background: var(--gradient-gold);
  color: var(--c-deep-blue);
  border-color: var(--c-deep-blue);
}

.page-home .btn-gold:hover {
  box-shadow: var(--shadow-hard);
  transform: translate(-1px, -1px);
}

.page-home .btn-download {
  background: var(--gradient-blue);
  color: var(--c-white);
  border: var(--border-w) solid var(--c-gold-light);
  font-size: 1.0625rem;
  padding: 0.875rem 2rem;
}

.page-home .btn-download:hover {
  box-shadow: 6px 6px 0 var(--c-gold-dark);
  transform: translate(-2px, -2px);
}

.page-home .text-link {
  color: var(--c-deep-blue);
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.page-home .text-link:hover {
  color: var(--c-cinnabar);
}

.page-home .text-link--light {
  color: var(--c-gold-light);
}

.page-home .text-link--light:hover {
  color: var(--c-white);
}

.page-home .breadcrumb {
  margin-bottom: 1.5rem;
}

.page-home .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--f-mono);
  font-size: 0.8125rem;
}

.page-home .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-home .breadcrumb li + li::before {
  content: "/";
  color: var(--c-gold-dark);
  margin-right: 0.5rem;
}

.page-home .breadcrumb a {
  color: var(--c-mid-blue);
  text-decoration: none;
}

.page-home .breadcrumb a:hover {
  color: var(--c-cinnabar);
  text-decoration: underline;
}

.page-home .breadcrumb .breadcrumb-current {
  color: var(--c-gold-dark);
  font-weight: 700;
}

.page-home .home-brief {
  padding: 2rem 1.25rem 0;
  background: var(--c-cream);
}

.page-home .home-brief__content {
  max-width: 720px;
  padding-bottom: 2rem;
}

.page-home .home-brief__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin: 0 0 1rem;
  font-family: var(--f-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-gold-dark);
}

.page-home .home-brief__eyebrow-line {
  display: inline-block;
  width: 2.25rem;
  height: 3px;
  background: var(--gradient-gold);
}

.page-home h1 {
  margin: 0;
  font-family: var(--f-heading);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.15;
  color: var(--c-deep-blue);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-home .home-brief__sub {
  display: block;
  font-size: 0.68em;
  color: var(--c-mid-blue);
  font-family: var(--f-body);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.page-home .home-brief__divider {
  display: none;
}

.page-home .home-brief__lead {
  margin: 1.25rem 0 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #2A2A2A;
}

.page-home .home-brief__lead code {
  background: var(--c-tag);
  color: var(--c-deep-blue);
  padding: 0.1em 0.45em;
  border-radius: 2px;
  font-weight: 700;
}

.page-home .home-brief__btn {
  margin-top: 1.5rem;
}

.page-home .version-tree {
  padding: 2.5rem 1.25rem;
  background: var(--c-deep-blue);
  color: var(--c-white);
  border-top: var(--border-w) solid var(--c-gold-light);
  border-bottom: var(--border-w) solid var(--c-gold-light);
}

.page-home .version-tree .section-heading__title {
  color: var(--c-white);
}

.page-home .version-tree .section-heading__desc {
  color: rgba(255, 255, 255, 0.8);
}

.page-home .version-tree__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-home .version-tree__visual {
  min-width: 0;
}

.page-home .version-tree__art {
  position: relative;
  overflow: hidden;
  border: var(--border-w) solid var(--c-gold-dark);
  box-shadow: var(--shadow-hard);
  background: var(--home-tree-bg);
}

.page-home .version-tree__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
}

.page-home .version-tree__svg-wrap {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 1rem 0.25rem 2.5rem;
}

.page-home .version-tree__svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 250px;
  max-height: 480px;
}

.page-home .version-tree__caption {
  margin: 0.75rem 0 0;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
}

.page-home .version-tree__keynodes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.page-home .version-tree__keynode {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  border-width: 2px;
}

.page-home .version-tree__side {
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

.page-home .version-latest {
  border: var(--border-w) solid var(--c-gold-dark);
  background: var(--c-deep-blue);
  box-shadow: var(--shadow-hard);
}

.page-home .version-latest__toggle {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 1rem;
  background: transparent;
  border: 0;
  color: var(--c-white);
  font-family: var(--f-body);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
}

.page-home .version-latest__badge {
  background: var(--c-cinnabar);
  color: var(--c-white);
  font-family: var(--f-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  letter-spacing: 0.06em;
}

.page-home .version-latest__date {
  color: var(--c-gold-light);
  font-size: 0.875rem;
  font-weight: 600;
}

.page-home .version-latest__icon {
  position: relative;
  width: 0.875rem;
  height: 0.875rem;
  margin-left: auto;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.page-home .version-latest__icon::before,
.page-home .version-latest__icon::after {
  content: "";
  position: absolute;
  background: var(--c-gold-light);
}

.page-home .version-latest__icon::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-home .version-latest__icon::after {
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-home .version-latest[data-expanded="true"] .version-latest__icon {
  transform: rotate(45deg) translate(-2px, -2px);
}

.page-home .version-latest .expandable-body {
  padding: 0 1rem 1rem;
}

.page-home .version-latest__summary {
  margin: 0 0 0.75rem;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.9375rem;
}

.page-home .version-latest__fixlist {
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.875rem;
}

.page-home .version-latest__fixlist li + li {
  margin-top: 0.375rem;
}

.page-home .version-latest__more {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.82);
}

.page-home .version-latest__more a {
  color: var(--c-gold-light);
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-home .version-latest__more a:hover {
  color: var(--c-white);
}

.page-home .version-quickinfo {
  border: 2px solid var(--c-mid-blue);
  border-left: 6px solid var(--c-gold-light);
  padding: 1rem;
  background: #0D2A4D;
}

.page-home .version-quickinfo__title {
  margin: 0 0 0.75rem;
  font-family: var(--f-heading);
  font-size: 1rem;
  color: var(--c-gold-light);
}

.page-home .version-quickinfo__list {
  margin: 0 0 0.75rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.page-home .version-quickinfo__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
}

.page-home .version-quickinfo__list .mono-inline {
  color: var(--c-gold-light);
  font-weight: 700;
  display: inline-block;
  min-width: 4.2em;
}

.page-home .version-quickinfo a {
  color: var(--c-gold-light);
  font-weight: 700;
}

.page-home .version-quickinfo a:hover {
  color: var(--c-white);
}

.page-home .cases-band {
  padding: 2.5rem 1.25rem;
  background: var(--c-deep-blue);
  color: var(--c-white);
}

.page-home .cases-band__header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.page-home .cases-band__more {
  align-self: flex-start;
  border-color: var(--c-gold-light);
}

.page-home .cases-strip {
  display: grid;
  grid-auto-columns: minmax(260px, 85%);
  grid-auto-flow: column;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  scroll-snap-type: x mandatory;
}

.page-home .case-card {
  scroll-snap-align: start;
  border: var(--border-w) solid var(--c-gold-dark);
  background: var(--c-cream);
  color: var(--c-ink);
  padding: 1.25rem;
  box-shadow: var(--shadow-soft);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}

.page-home .case-card:hover {
  box-shadow: var(--shadow-hard);
  transform: translate(-2px, -2px);
}

.page-home .case-card__tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--c-tag);
  color: var(--c-deep-blue);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.625rem;
  border: 1px solid var(--c-line);
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem;
}

.page-home .case-card__title {
  margin: 0 0 0.625rem;
  font-family: var(--f-heading);
  font-size: 1.25rem;
  line-height: 1.3;
  color: var(--c-deep-blue);
}

.page-home .case-card__summary {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  line-height: 1.65;
  color: #33302B;
  flex: 1;
}

.page-home .case-card__meta {
  border-top: 1px dashed var(--c-gold-dark);
  padding-top: 0.625rem;
  margin-bottom: 0.625rem;
  font-size: 0.8125rem;
  color: #3D3A36;
  line-height: 1.5;
}

.page-home .case-card__meta .mono-inline {
  color: var(--c-cinnabar);
  font-weight: 700;
}

.page-home .case-card .text-link {
  font-size: 0.875rem;
}

.page-home .cases-chart {
  margin-top: 2rem;
  border: var(--border-w) solid var(--c-gold-dark);
  background: var(--c-cream);
  padding: 0.75rem;
  box-shadow: var(--shadow-hard);
  max-width: 760px;
}

.page-home .cases-chart__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--c-line);
}

.page-home .cases-chart__note {
  margin: 0.625rem 0 0;
  font-size: 0.8125rem;
  color: #3D3A36;
}

.page-home .download-support {
  padding: 2.5rem 1.25rem;
}

.page-home .download-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.page-home .download-support__cta {
  border: var(--border-w) solid var(--c-gold-dark);
  background: var(--c-cream);
  padding: 1.5rem;
  box-shadow: var(--shadow-hard);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-home .download-support__lead {
  margin: 0 0 0.625rem;
  font-family: var(--f-heading);
  font-size: 1.375rem;
  color: var(--c-deep-blue);
  font-weight: 700;
}

.page-home .gold-number {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
  font-size: 1.15em;
}

.page-home .download-support__text {
  margin: 0 0 1.25rem;
  max-width: 480px;
  color: #2A2A2A;
  line-height: 1.75;
}

.page-home .download-support__spec {
  border: 2px solid var(--c-line);
  border-left: 6px solid var(--c-cinnabar);
  padding: 1.25rem;
  background: var(--c-white);
}

.page-home .download-support__spec-title {
  margin: 0 0 0.75rem;
  font-family: var(--f-heading);
  font-size: 1.125rem;
  color: var(--c-deep-blue);
}

.page-home .download-support__spec-list {
  margin: 0 0 0.875rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.page-home .download-support__spec-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.page-home .download-support__spec-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.625rem;
  height: 0.625rem;
  background: var(--gradient-gold);
  transform: rotate(45deg);
}

.page-home .download-support__spec-list .mono-inline {
  color: var(--c-deep-blue);
  font-weight: 700;
  background: var(--c-tag);
  padding: 0.1em 0.4em;
  border-radius: 2px;
}

.page-home .download-support__spec-note {
  margin: 0;
  font-size: 0.8125rem;
  color: #3D3A36;
}

.page-home .download-support__spec-note a {
  color: var(--c-deep-blue);
  font-weight: 700;
}

.page-home .download-support__visual {
  border: var(--border-w) solid var(--c-deep-blue);
  background: var(--c-deep-blue);
  box-shadow: var(--shadow-hard);
  padding: 0.375rem;
}

.page-home .download-support__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--c-gold-dark);
  object-fit: cover;
}

.page-home .brand-story {
  padding: 2.5rem 1.25rem;
  background: var(--gradient-blue);
  color: var(--c-white);
  border-top: var(--border-w) solid var(--c-gold-light);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-home .brand-story__kicker {
  margin: 0 0 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--c-gold-light);
  text-transform: uppercase;
}

.page-home .brand-story__title {
  margin: 0 0 1rem;
  font-family: var(--f-heading);
  font-size: 1.75rem;
  color: var(--c-white);
  line-height: 1.25;
}

.page-home .brand-story__text {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
}

.page-home .brand-story__content .section-heading__index {
  color: var(--c-gold-light);
}

.page-home .brand-story__content .text-link {
  color: var(--c-gold-light);
  font-weight: 700;
}

.page-home .brand-story__content .text-link:hover {
  color: var(--c-white);
}

.page-home .brand-story__visual {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: start;
}

.page-home .brand-story__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 480px;
  border: var(--border-w) solid var(--c-gold-dark);
  box-shadow: var(--shadow-hard);
  background: var(--c-deep-blue);
}

.page-home .brand-story__caption {
  margin: 0;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 480px;
  line-height: 1.5;
}

.page-home .old-version-help {
  padding: 2.5rem 1.25rem;
  background: var(--c-cream);
}

.page-home .old-version-help__inner {
  border: var(--border-w) solid var(--c-deep-blue);
  background: var(--c-white);
  padding: 1.75rem;
  box-shadow: var(--shadow-hard);
  max-width: 900px;
}

.page-home .old-version-help__title {
  margin: 0 0 0.75rem;
  font-family: var(--f-heading);
  font-size: 1.75rem;
  color: var(--c-deep-blue);
  line-height: 1.3;
}

.page-home .old-version-help__text {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  line-height: 1.75;
  color: #2A2A2A;
  max-width: 680px;
}

.page-home .old-version-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

@media (max-width: 640px) {
  .page-home .home-brief h1 {
    max-width: 100%;
  }
  .page-home .version-latest__toggle {
    font-size: 0.9375rem;
  }
  .page-home .version-latest__date {
    width: 100%;
  }
  .page-home .brand-story__visual {
    width: 100%;
  }
  .page-home .old-version-help__inner {
    padding: 1.25rem;
  }
  .page-home .cases-strip {
    grid-auto-columns: minmax(240px, 82%);
  }
}

@media (min-width: 768px) {
  .page-home .home-brief {
    padding: 3.5rem 3rem 0;
  }
  .page-home .version-tree {
    padding: 3.5rem 3rem;
  }
  .page-home .version-tree__layout {
    grid-template-columns: 1.6fr 1fr;
    gap: 2rem;
  }
  .page-home .cases-band {
    padding: 3.5rem 3rem;
  }
  .page-home .cases-band__header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
  .page-home .cases-strip {
    grid-auto-columns: minmax(280px, 42%);
  }
  .page-home .download-support {
    padding: 3.5rem 3rem;
  }
  .page-home .download-support__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }
  .page-home .download-support__visual {
    grid-column: 2;
    grid-row: 1 / span 3;
    align-self: stretch;
    display: flex;
    align-items: center;
  }
  .page-home .brand-story {
    padding: 3.5rem 3rem;
  }
  .page-home .old-version-help {
    padding: 3.5rem 3rem;
  }
  .page-home .old-version-help__inner {
    padding: 2.25rem;
  }
}

@media (min-width: 1080px) {
  .page-home .home-brief {
    padding: 4.5rem 5vw 0;
  }
  .page-home .version-tree {
    padding: 4.5rem 5vw;
  }
  .page-home .cases-band {
    padding: 4.5rem 5vw;
  }
  .page-home .download-support {
    padding: 4.5rem 5vw;
  }
  .page-home .brand-story {
    padding: 4.5rem 5vw;
    grid-template-columns: 1.3fr 1fr;
    gap: 3rem;
    align-items: center;
  }
  .page-home .old-version-help {
    padding: 4.5rem 5vw;
  }
  .page-home .cases-strip {
    grid-auto-columns: minmax(300px, 34%);
  }
  .page-home .section-heading {
    margin-bottom: 2.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .version-tree__svg path {
    animation: none !important;
  }
  .page-home .btn,
  .page-home .case-card {
    transition: none;
  }
}

@keyframes treeDashFlow {
  0% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -180; }
}