.download-hero {
  position: relative;
  padding-top: clamp(48px, 7vw, 92px);
  padding-bottom: clamp(72px, 9vw, 118px);
  overflow-x: clip;
}

.download-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: clamp(44px, 7vw, 92px);
  align-items: center;
}

.download-hero-copy {
  max-width: 700px;
}

.download-hero-copy h1 {
  max-width: 760px;
  font-size: clamp(54px, 6vw, 72px);
}

.download-hero-copy .lead {
  max-width: 660px;
  margin-bottom: 30px;
}

.download-hero-actions {
  display: flex;
  margin-bottom: 28px;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.download-hero-actions .btn svg,
.package-download-button svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.download-fact-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.package-board {
  overflow: hidden;
  border-radius: var(--radius-window);
  background: var(--color-panel);
  box-shadow: var(--shadow-window);
}

.package-board-top {
  display: flex;
  padding: 18px 20px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--color-panel-muted);
}

.package-board-label {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
}

.package-route-list {
  display: grid;
  padding: 18px;
  gap: 10px;
}

.package-route {
  display: grid;
  min-height: 74px;
  padding: 12px 15px;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  border-radius: var(--radius-control);
  background: var(--color-panel-muted);
  color: var(--color-text);
  text-decoration: none;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.package-route:hover {
  transform: translateX(4px);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.package-platform-mark {
  display: inline-flex;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-small);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
}

.package-platform-primary {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.package-platform-success {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.package-platform-warning {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.package-route-copy {
  display: grid;
  gap: 1px;
}

.package-route-copy strong {
  font-family: var(--font-display);
  font-size: 0.94rem;
}

.package-route-copy small {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  overflow-wrap: anywhere;
}

.package-route-arrow {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-weight: 800;
}

.package-board-status {
  display: flex;
  padding: 14px 20px;
  align-items: center;
  gap: 9px;
  background: var(--color-panel-muted);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.platform-tab-shell {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

.platform-tab-list {
  position: sticky;
  top: calc(var(--header-height) + 12px);
  z-index: 20;
  box-shadow: var(--shadow-chip);
}

.platform-tab-list .tab-button {
  flex: 1 1 180px;
}

.platform-tab-list svg {
  width: 19px;
  height: 19px;
  flex-shrink: 0;
  fill: currentColor;
}

.platform-tab-list #tab-android svg,
.platform-tab-list #tab-linux svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.55;
}

.platform-panel {
  padding-top: 42px;
}

.platform-panel-heading {
  display: grid;
  margin-bottom: 28px;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 36px;
  align-items: end;
}

.platform-panel-heading .badge {
  margin-bottom: 12px;
}

.platform-panel-heading h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 3vw, 43px);
}

.platform-panel-heading p {
  margin-bottom: 2px;
  color: var(--color-text-muted);
}

.platform-download-grid {
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
}

.featured-download-card {
  box-shadow: var(--shadow-window);
}

.download-card {
  gap: 20px;
}

.download-card-head {
  align-items: center;
}

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

.download-card > p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.package-choice {
  display: grid;
  padding: 20px;
  gap: 17px;
  border-radius: var(--radius-control);
  background: var(--color-panel-muted);
}

.package-choice-primary {
  background: var(--color-primary-soft);
}

.package-choice-copy {
  display: grid;
  gap: 5px;
}

.package-choice-copy strong {
  font-family: var(--font-display);
  font-size: 1rem;
}

.package-choice-copy span {
  color: var(--color-text-muted);
  font-size: 0.84rem;
}

.package-choice-copy code,
.architecture-file-list code {
  max-width: 100%;
  color: var(--color-primary-dark);
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

.package-download-button {
  width: 100%;
  min-height: 52px;
}

.platform-notes {
  padding: 28px;
  border-radius: var(--radius-card);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.platform-notes h3 {
  font-size: 1.35rem;
}

.decision-list {
  margin-bottom: 24px;
  padding-left: 22px;
  color: var(--color-text-muted);
}

.decision-list li + li {
  margin-top: 14px;
}

.decision-list strong {
  color: var(--color-text);
}

.platform-notes .callout {
  margin-bottom: 0;
}

.requirements-block {
  margin-top: 30px;
  padding: clamp(22px, 4vw, 36px);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.requirements-block h3 {
  font-size: 1.4rem;
}

.linux-primary-packages {
  display: grid;
  gap: 16px;
}

.architecture-alternatives {
  padding-top: 6px;
}

.architecture-alternatives h4 {
  margin-bottom: 6px;
}

.architecture-alternatives p {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.architecture-link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.architecture-link-grid .btn {
  min-height: 48px;
}

.architecture-file-list {
  display: grid;
  margin-top: 12px;
  gap: 7px;
}

.download-checklist {
  display: grid;
  gap: 14px;
}

.download-check-item {
  display: grid;
  padding: clamp(22px, 3vw, 32px);
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  border-radius: var(--radius-card);
  background: var(--color-panel);
  box-shadow: var(--shadow-chip);
}

.download-check-index {
  display: inline-flex;
  width: 54px;
  height: 54px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-control);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
}

.download-check-item:nth-child(2) .download-check-index {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.download-check-item:nth-child(3) .download-check-index {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.download-check-item:nth-child(4) .download-check-index {
  background: var(--color-panel-muted);
  color: var(--color-text-muted);
}

.download-check-item h3 {
  margin-bottom: 7px;
  font-size: 1.3rem;
}

.download-check-item p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.install-next-step {
  display: grid;
  margin-top: 32px;
  padding: clamp(26px, 4vw, 42px);
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  border-radius: var(--radius-window);
  background: var(--color-text);
  box-shadow: var(--shadow-window);
}

.install-next-step h2 {
  margin-top: 12px;
  margin-bottom: 8px;
  color: var(--color-panel);
  font-size: clamp(28px, 3vw, 40px);
}

.install-next-step p {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--color-line);
}

.download-faq-section {
  background: var(--color-panel-muted);
}

.faq-reference-row {
  display: flex;
  margin-top: 26px;
  gap: 18px;
  flex-wrap: wrap;
}

.faq-reference-row a {
  font-weight: 750;
  text-decoration: none;
}

@media (max-width: 1040px) {
  .download-hero-grid {
    grid-template-columns: 1fr;
  }

  .package-board {
    max-width: 720px;
  }

  .platform-panel-heading {
    grid-template-columns: 1fr;
    gap: 14px;
  }

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

@media (max-width: 820px) {
  .install-next-step {
    grid-template-columns: 1fr;
  }

  .install-next-step .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .download-hero {
    padding-top: 30px;
    padding-bottom: 68px;
  }

  .download-hero-grid {
    gap: 38px;
  }

  .download-hero-copy h1 {
    font-size: clamp(1.75rem, 9vw, 2.5rem);
  }

  .download-hero-actions {
    align-items: stretch;
  }

  .download-hero-actions .btn {
    width: 100%;
  }

  .download-fact-row {
    align-items: stretch;
  }

  .download-fact-row .capsule {
    flex: 1 1 auto;
    justify-content: center;
  }

  .package-board-top {
    align-items: flex-start;
    flex-direction: column;
  }

  .package-route {
    padding-inline: 12px;
  }

  .package-route-copy small {
    font-size: 0.64rem;
  }

  .platform-tab-list {
    position: static;
  }

  .platform-tab-list .tab-button {
    flex: 0 0 auto;
  }

  .platform-panel {
    padding-top: 30px;
  }

  .platform-panel-heading {
    margin-bottom: 22px;
  }

  .download-card,
  .platform-notes,
  .requirements-block {
    padding: 20px;
  }

  .package-choice {
    padding: 16px;
  }

  .architecture-link-grid {
    grid-template-columns: 1fr;
  }

  .download-check-item {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 14px;
  }

  .download-check-index {
    width: 42px;
    height: 42px;
  }

  .install-next-step {
    padding: 24px 20px;
  }

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

@media (max-width: 380px) {
  .package-platform-mark {
    width: 34px;
    height: 34px;
  }

  .package-route {
    gap: 10px;
  }

  .package-route-arrow {
    display: none;
  }

  .download-card-head {
    align-items: flex-start;
  }

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