.download-hero {
  padding-top: 18px;
  padding-bottom: clamp(40px, 6vw, 72px);
}

.download-hero-panel {
  position: relative;
  display: grid;
  min-height: 430px;
  overflow: hidden;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: clamp(30px, 5vw, 72px);
  border-radius: var(--radius-banner);
  background: var(--color-ink-panel);
  color: var(--color-on-dark);
  padding: clamp(34px, 5vw, 64px);
  box-shadow: var(--shadow-banner);
}

.download-hero-panel::before,
.download-hero-panel::after {
  position: absolute;
  pointer-events: none;
  content: "";
}

.download-hero-panel::before {
  inset: 0;
  background-image:
    linear-gradient(var(--color-guide-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-guide-faint) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: .6;
}

.download-hero-panel::after {
  top: 0;
  right: 0;
  width: 48%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--color-guide-faint));
}

.download-hero-copy,
.download-transition {
  position: relative;
  z-index: 1;
}

.download-kicker {
  display: inline-flex;
  margin-bottom: 16px;
  align-items: center;
  gap: 10px;
  color: var(--color-on-dark-soft);
  font-family: var(--font-mono);
  font-size: .8rem;
}

.download-hero h1 {
  max-width: 12em;
  margin-bottom: 18px;
  color: var(--color-on-dark);
  font-size: clamp(34px, 4vw, 48px);
}

.download-hero-lede {
  max-width: 40em;
  margin-bottom: 0;
  color: var(--color-on-dark-soft);
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 1.75;
}

.download-hero-lede strong {
  color: var(--color-on-dark);
}

.download-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.download-facts span {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  border: 1px solid var(--color-chip-border);
  border-radius: var(--radius-pill);
  padding: 5px 11px;
  color: var(--color-on-dark-soft);
  font-size: .76rem;
}

.download-transition {
  display: grid;
  grid-template-columns: minmax(104px, 1fr) minmax(110px, 1.3fr) minmax(124px, 1fr);
  align-items: center;
}

.transition-old,
.transition-core {
  display: grid;
  min-height: 170px;
  place-content: center;
  border-radius: var(--radius-card);
  text-align: center;
}

.transition-old {
  border: 1px solid var(--color-line-ghost);
  color: var(--color-on-dark-faint);
}

.transition-core {
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-ink-panel);
  box-shadow: var(--shadow-button);
}

.transition-old span,
.transition-core span {
  font-family: var(--font-mono);
  font-size: .67rem;
  letter-spacing: .16em;
}

.transition-old strong,
.transition-core strong {
  display: block;
  margin-block: 8px;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.transition-old small,
.transition-core small {
  font-size: .74rem;
}

.transition-arrow {
  width: 100%;
  overflow: visible;
}

.transition-arrow path {
  stroke: var(--color-accent);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.download-catalog {
  background: var(--color-surface);
}

.download-tab-nav {
  position: sticky;
  z-index: 25;
  top: 10px;
  margin-bottom: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  padding: 6px;
  box-shadow: var(--shadow-card);
}

.platform-tabs svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.download-platform-panel {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-banner);
  background: var(--color-canvas);
  padding: clamp(22px, 4vw, 44px);
  box-shadow: var(--shadow-card);
}

.download-platform-panel[hidden] {
  display: none;
}

.platform-panel-head {
  display: flex;
  margin-bottom: 30px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.platform-panel-head > div {
  max-width: 760px;
}

.platform-panel-head p:last-child {
  color: var(--color-text-muted);
}

.platform-mark {
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  padding: 7px 12px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: .72rem;
}

.download-grid--single {
  grid-template-columns: minmax(0, 720px);
}

.download-card {
  position: relative;
  overflow: hidden;
}

.download-card--featured {
  border-color: var(--color-accent-strong);
}

.download-card--featured::before {
  position: absolute;
  top: 0;
  right: 28px;
  width: 72px;
  height: 6px;
  border-radius: 0 0 var(--radius-pill) var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.download-card--archived {
  background: var(--color-surface);
}

.download-card-head img {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
}

.download-card-title h3 {
  margin-top: 8px;
  margin-bottom: 0;
}

.download-card-title .client-badge + h3 {
  margin-top: 8px;
}

.download-card-body p {
  color: var(--color-text-muted);
}

.client-points {
  display: grid;
  gap: 5px;
  margin-top: 18px;
  margin-bottom: 0;
  padding-left: 1.15em;
  color: var(--color-text);
  font-size: .88rem;
}

.download-card-actions {
  align-items: stretch;
  flex-direction: column;
}

.download-card-actions .button {
  width: 100%;
  min-height: 50px;
}

.download-card-actions .button--primary {
  font-size: .96rem;
}

.official-site-line a {
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-weight: 750;
}

.requirements-block {
  margin-top: 38px;
  border-top: 1px solid var(--color-border);
  padding-top: 30px;
}

.requirements-block h3 {
  margin-bottom: 18px;
}

.requirements-block code {
  white-space: nowrap;
}

.core-callout {
  margin-bottom: 28px;
}

.core-table table {
  min-width: 820px;
}

.button--table {
  min-width: 92px;
  min-height: 42px;
  padding: 8px 16px;
  font-size: .84rem;
}

.core-notes {
  display: grid;
  margin-top: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.selection-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-banner);
  background: var(--color-surface);
  padding: clamp(26px, 5vw, 54px);
  box-shadow: var(--shadow-card);
}

.selection-steps {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-border);
}

.selection-steps li {
  display: grid;
  min-width: 0;
  gap: 18px;
  background: var(--color-canvas);
  padding: clamp(22px, 3vw, 32px);
}

.selection-index {
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 800;
}

.selection-steps h3 {
  font-size: 1.1rem;
}

.selection-steps p {
  color: var(--color-text-muted);
  font-size: .92rem;
}

.after-download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.after-download-grid .card {
  position: relative;
  padding-left: clamp(72px, 8vw, 92px);
}

.process-number {
  position: absolute;
  top: 28px;
  left: 26px;
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-ink-panel);
  font-family: var(--font-mono);
  font-weight: 800;
}

.guide-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

@media (max-width: 980px) {
  .download-hero-panel {
    grid-template-columns: 1fr;
  }

  .download-transition {
    max-width: 680px;
  }

  .selection-steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .download-hero {
    padding-top: 8px;
  }

  .download-hero-panel {
    min-height: 0;
    gap: 34px;
    border-radius: var(--radius-card);
    padding: 30px 22px;
  }

  .download-hero h1 {
    font-size: clamp(24px, 7.5vw, 30px);
  }

  .download-transition {
    grid-template-columns: minmax(84px, 1fr) minmax(74px, .8fr) minmax(98px, 1fr);
  }

  .transition-old,
  .transition-core {
    min-height: 132px;
  }

  .transition-old strong,
  .transition-core strong {
    font-size: .96rem;
  }

  .download-tab-nav {
    top: 6px;
    border-radius: var(--radius-sm);
  }

  .platform-panel-head {
    flex-direction: column;
  }

  .platform-mark {
    align-self: flex-start;
  }

  .core-notes,
  .after-download-grid {
    grid-template-columns: 1fr;
  }

  .after-download-grid .card {
    padding-left: 76px;
  }
}

@media (max-width: 480px) {
  .download-transition {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .transition-arrow {
    width: 94px;
    margin-inline: auto;
    transform: rotate(90deg);
  }

  .transition-old,
  .transition-core {
    min-height: 112px;
  }

  .download-platform-panel {
    border-radius: var(--radius-card);
    padding: 20px 16px;
  }

  .download-card-head img {
    width: 48px;
    height: 48px;
  }

  .after-download-grid .card {
    padding: 72px 22px 24px;
  }

  .process-number {
    top: 22px;
    left: 22px;
  }

  .guide-link-row {
    align-items: stretch;
    flex-direction: column;
  }

  .guide-link-row .button {
    width: 100%;
  }
}