:root {
  --download-icon-size: 48px;
  --download-route-width: 420px;
  --download-card-min: 330px;
  --download-table-min: 720px;
}

.download-hero {
  padding-top: clamp(58px, 8vw, 104px);
  padding-bottom: clamp(64px, 9vw, 112px);
  overflow-x: clip;
  position: relative;
  background:
    radial-gradient(circle at 15% 18%, var(--color-error-glow), transparent 27%),
    radial-gradient(circle at 85% 78%, var(--color-accent-glow), transparent 31%),
    var(--color-bg);
}

.download-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, var(--color-text), transparent 88%);
  -webkit-mask-image: linear-gradient(to bottom, var(--color-text), transparent 88%);
  pointer-events: none;
}

.download-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, var(--download-route-width));
  align-items: center;
  gap: clamp(38px, 7vw, 88px);
  position: relative;
  z-index: 1;
}

.download-hero-copy {
  max-width: 750px;
}

.download-hero-copy h1 {
  font-size: clamp(54px, 6vw, 72px);
}

.download-hero-actions {
  margin-top: 26px;
}

.download-fact-row {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.download-route-card {
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  box-shadow: var(--shadow-device);
  transform: rotate(0.6deg);
}

.download-route-card::before {
  content: "";
  height: 3px;
  margin: 0 16px 10px;
  border-radius: var(--radius-pill);
  display: block;
  background: var(--gradient-edge);
}

.route-card-top {
  padding: 8px 11px 14px;
  border-bottom: 1px solid var(--color-border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.route-status {
  color: var(--color-accent-dark);
  font-weight: 750;
  letter-spacing: 0.08em;
}

.route-list {
  margin: 0;
  padding: 12px 0 0;
  list-style: none;
  display: grid;
}

.route-list li {
  padding: 14px 12px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  position: relative;
}

.route-list li + li {
  border-top: 1px dashed var(--color-border);
}

.route-index {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
}

.route-list strong {
  display: block;
  color: var(--color-text);
  font-size: 14px;
}

.route-list p {
  margin-top: 3px;
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.55;
}

.platform-download-shell {
  padding: clamp(14px, 2.5vw, 24px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  box-shadow: var(--shadow-device);
}

.download-tabs {
  position: sticky;
  top: calc(var(--nav-height) + 10px);
  z-index: 15;
}

.download-tabs [role="tab"] {
  flex: 1 0 auto;
}

.platform-intro {
  margin-top: 28px;
  padding: clamp(22px, 4vw, 36px);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  background: var(--color-panel);
}

.platform-intro > div {
  max-width: 770px;
}

.platform-intro h3 {
  margin: 8px 0;
  font-size: clamp(25px, 3vw, 36px);
}

.platform-intro p {
  color: var(--color-muted);
}

.platform-code {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.client-download-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(var(--download-card-min), 1fr));
  gap: 18px;
}

.single-client-grid {
  grid-template-columns: minmax(0, 760px);
}

.client-card {
  align-content: start;
}

.client-card.is-featured {
  position: relative;
}

.client-card.is-featured::before {
  content: "";
  position: absolute;
  top: -1px;
  right: 28px;
  left: 28px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--gradient-edge);
}

.client-icon {
  width: var(--download-icon-size);
  height: var(--download-icon-size);
  flex-shrink: 0;
}

.client-title .badge {
  margin-bottom: 9px;
}

.archived-client {
  background: var(--color-panel);
}

.package-specs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
}

.package-specs > span,
.package-specs > a {
  min-height: 29px;
  max-width: 100%;
  padding: 6px 10px;
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  background: var(--color-panel);
  color: var(--color-muted);
  font-size: 11px;
  line-height: 1.2;
}

.package-specs > a {
  color: var(--color-accent-dark);
  font-weight: 750;
}

.requirements-block {
  margin-top: 32px;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--nav-height) + 104px);
}

.requirements-block h3 {
  font-size: 23px;
}

.requirements-block .table-wrap table {
  min-width: var(--download-table-min);
}

.core-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  align-items: start;
  gap: clamp(30px, 6vw, 72px);
}

.core-copy {
  position: sticky;
  top: calc(var(--nav-height) + 28px);
}

.core-table-panel {
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.core-download-table {
  min-width: 660px;
  margin: 0;
  background: var(--color-bg);
}

.core-download-link {
  color: var(--color-accent-dark);
  font-weight: 750;
  white-space: nowrap;
}

.core-download-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.core-table-note {
  margin-top: 16px;
  color: var(--color-muted);
  font-size: 13px;
}

.selection-guide {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-border);
}

.selection-step {
  padding: clamp(24px, 4vw, 38px);
  background: var(--color-bg);
}

.selection-number {
  width: 38px;
  height: 38px;
  margin-bottom: 24px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  background: var(--color-warn-soft);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.selection-step h3 {
  font-size: 21px;
}

.selection-step p {
  color: var(--color-muted);
  font-size: 14px;
}

.format-reference {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.format-item {
  min-height: 106px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--color-bg);
}

.format-item strong {
  color: var(--color-accent-dark);
  font-size: 15px;
}

.format-item span {
  color: var(--color-muted);
  font-size: 12px;
}

.faq-followup {
  margin-top: 30px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: var(--color-panel);
}

.faq-followup > div:first-child {
  max-width: 520px;
}

.faq-followup h3 {
  margin-bottom: 6px;
  font-size: 22px;
}

.faq-followup p {
  color: var(--color-muted);
}

@media (max-width: 1080px) {
  .download-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
    gap: 40px;
  }

  .client-download-grid {
    grid-template-columns: 1fr;
  }

  .format-reference {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .download-hero-inner,
  .core-layout {
    grid-template-columns: 1fr;
  }

  .download-route-card {
    max-width: 680px;
    transform: none;
  }

  .core-copy {
    position: static;
  }

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

  .faq-followup {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .download-hero {
    padding-top: 44px;
  }

  .download-hero-copy h1 {
    font-size: clamp(36px, 11vw, 50px);
  }

  .platform-download-shell {
    padding: 10px;
    border-radius: var(--radius-lg);
  }

  .platform-intro {
    align-items: flex-start;
    flex-direction: column;
  }

  .platform-intro .button {
    width: 100%;
  }

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

@media (max-width: 640px) {
  .download-hero-actions .button {
    width: 100%;
  }

  .download-route-card {
    padding: 9px;
  }

  .route-list li {
    padding-inline: 8px;
  }

  .download-tabs [role="tab"] {
    flex: 0 0 auto;
  }

  .platform-intro {
    padding: 20px;
    border-radius: var(--radius-lg);
  }

  .client-download-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .client-card {
    border-radius: var(--radius-lg);
  }

  .package-specs {
    align-items: flex-start;
  }

  .core-table-panel {
    padding: 12px;
    border-radius: var(--radius-lg);
  }

  .format-reference {
    grid-template-columns: 1fr 1fr;
  }

  .format-item {
    min-height: 96px;
    padding: 13px;
  }

  .faq-followup .cluster,
  .faq-followup .button {
    width: 100%;
  }
}

@media (max-width: 360px) {
  .download-fact-row {
    align-items: stretch;
    flex-direction: column;
  }

  .download-fact-row .chip {
    width: 100%;
  }

  .format-reference {
    grid-template-columns: 1fr;
  }
}