.download-hero {
  border-bottom: 1px solid var(--color-border);
}

.download-hero::before {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    90deg,
    var(--color-stripe) 0,
    var(--color-stripe) 1px,
    transparent 1px,
    transparent 18px
  );
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent,
    var(--color-overlay),
    transparent
  );
  mask-image: linear-gradient(
    90deg,
    transparent,
    var(--color-overlay),
    transparent
  );
  content: "";
  opacity: 0.35;
  pointer-events: none;
}

.download-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.72fr);
  align-items: center;
  gap: 72px;
}

.download-hero-copy {
  min-width: 0;
  max-width: 720px;
}

.download-hero-copy .lead {
  max-width: 690px;
  margin-bottom: 28px;
}

.package-section-map {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-card-glass);
  padding: 30px;
  box-shadow: var(--shadow-3);
  backdrop-filter: blur(3px);
}

.package-section-map > .mono-label {
  margin-bottom: 20px;
}

.package-section-map ol {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.package-section-map li {
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 15px;
  padding-top: 18px;
  padding-bottom: 18px;
  border-top: 1px solid var(--color-border);
}

.package-section-map li:last-child {
  padding-bottom: 0;
}

.package-map-index {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}

.package-section-map strong {
  display: block;
  margin-bottom: 3px;
  color: var(--color-text);
  font-size: 15px;
}

.package-section-map p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.download-tabs {
  align-items: start;
}

.download-tabs .tab-list {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.download-tabs .tab-panel {
  grid-column: 2;
  grid-row: 1;
  min-height: 680px;
}

.platform-panel-head {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.platform-panel-head h2 {
  margin-bottom: 8px;
  font-size: clamp(26px, 2.6vw, 36px);
}

.platform-panel-head p:last-child {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.platform-symbol {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-accent-dark);
}

.platform-symbol svg {
  width: 26px;
  height: 26px;
}

.platform-symbol-tux svg {
  width: 25px;
  height: 31px;
}

.client-title-line {
  display: flex;
  min-width: 0;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 5px;
}

.client-title-line h3 {
  margin-bottom: 0;
}

.package-choice {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 0.58fr);
  gap: 26px;
  align-items: center;
  margin-top: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  padding: 22px;
}

.package-choice-main {
  border-color: var(--color-accent);
  background: var(--color-accent-tint);
}

.package-choice-copy {
  min-width: 0;
}

.package-choice-copy h4 {
  margin-bottom: 6px;
  font-size: 19px;
}

.package-choice-copy p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.75;
}

.package-choice-tag {
  display: inline-block;
  max-width: 100%;
  margin-bottom: 8px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  overflow-wrap: anywhere;
}

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

.package-choice .button-secondary {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
}

.requirements-block {
  margin-top: 36px;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
}

.requirements-block h3 {
  font-size: 22px;
}

.requirements-block .data-table-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}

.requirements-block table {
  min-width: 620px;
}

.requirements-block td:first-child {
  width: 160px;
  color: var(--color-text);
  font-weight: 700;
}

.requirements-block td:last-child {
  color: var(--color-text-muted);
}

.linux-package-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  gap: 26px;
  align-items: center;
  margin-top: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  padding: 22px;
}

.linux-package-group:first-of-type {
  border-color: var(--color-accent);
  background: var(--color-accent-tint);
}

.linux-package-head h4 {
  margin-bottom: 6px;
  font-size: 19px;
}

.linux-package-head p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.architecture-actions {
  display: grid;
  gap: 10px;
}

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

.architecture-actions .button-secondary {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
}

.install-sequence {
  display: grid;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.sequence-layer {
  position: relative;
  display: grid;
  grid-template-columns: minmax(120px, 0.25fr) minmax(0, 1fr);
  gap: 32px;
  padding: 30px 34px;
  border-bottom: 1px solid var(--color-border);
}

.sequence-layer:last-child {
  border-bottom: 0;
}

.sequence-layer::before {
  position: absolute;
  top: 22px;
  bottom: 22px;
  left: 0;
  width: 3px;
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  background: var(--gradient-brand);
  content: "";
  opacity: 0;
  transform: scaleY(0.45);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.sequence-layer:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.sequence-index {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.sequence-layer h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.sequence-layer p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  line-height: 1.85;
}

.install-guide-actions {
  margin-top: 28px;
}

@media (max-width: 1080px) {
  .download-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
    gap: 42px;
  }

  .package-choice,
  .linux-package-group {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 960px) {
  .download-hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .package-section-map {
    max-width: 680px;
  }

  .download-tabs .tab-list {
    position: static;
  }

  .download-tabs .tab-panel {
    grid-column: 1;
    grid-row: 2;
  }
}

@media (max-width: 640px) {
  .download-hero-grid {
    gap: 34px;
  }

  .package-section-map {
    padding: 24px 20px;
  }

  .platform-panel-head {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 14px;
  }

  .platform-symbol {
    width: 44px;
    height: 44px;
  }

  .platform-symbol svg {
    width: 21px;
    height: 21px;
  }

  .platform-symbol-tux svg {
    width: 20px;
    height: 25px;
  }

  .package-choice,
  .linux-package-group {
    padding: 18px;
  }

  .sequence-layer {
    grid-template-columns: minmax(0, 1fr);
    gap: 9px;
    padding: 24px 22px;
  }

  .install-guide-actions .button {
    width: 100%;
  }
}

@media (max-width: 400px) {
  .package-section-map li {
    grid-template-columns: 38px minmax(0, 1fr);
  }

  .platform-panel-head {
    grid-template-columns: minmax(0, 1fr);
  }

  .platform-symbol {
    width: 42px;
    height: 42px;
  }
}