.download-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background:
    radial-gradient(circle at 12% 15%, var(--color-accent-soft), transparent 34%),
    radial-gradient(circle at 88% 78%, var(--color-panel-alt), transparent 38%),
    var(--color-bg);
}

.download-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 38px 38px;
  opacity: 0.28;
  pointer-events: none;
}

.download-hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(290px, 0.75fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  min-height: 480px;
  padding-top: 48px;
  padding-bottom: 48px;
}

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

.download-hero-copy h1 {
  max-width: 720px;
  margin-top: 17px;
}

.download-hero-lede {
  max-width: 720px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
}

.download-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.download-facts span {
  display: inline-flex;
  max-width: 100%;
  min-height: 34px;
  align-items: center;
  overflow: hidden;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
  font-size: 13px;
  font-weight: 700;
}

.download-route-card {
  position: relative;
  min-width: 0;
  padding: clamp(24px, 4vw, 34px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.download-route-card::after {
  content: "";
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border: 2px dashed var(--color-warning);
  border-radius: var(--radius-pill);
}

.download-route-card h2 {
  margin-top: 18px;
  font-size: clamp(24px, 3vw, 31px);
}

.download-route-card ol {
  margin-bottom: 18px;
  padding-left: 1.25em;
  color: var(--color-text-muted);
}

.download-route-card li + li {
  margin-top: 12px;
}

.download-route-card strong {
  color: var(--color-text);
}

.text-route {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-weight: 750;
  text-decoration: none;
}

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

.platform-download-tabs {
  min-width: 0;
}

.platform-tab-list {
  justify-content: center;
  border-radius: var(--radius-lg);
}

.platform-tab-list [role="tab"] {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.platform-tab-icon {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-accent-dark);
}

.platform-tab-icon svg {
  width: 16px;
  height: 16px;
}

.platform-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 28px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel-alt);
}

.platform-intro h3 {
  margin-top: 14px;
}

.platform-intro p {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.system-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

.system-card > strong {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: 16px;
}

.system-card dl {
  margin: 0;
}

.system-card dl div {
  display: grid;
  grid-template-columns: minmax(86px, 0.42fr) minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--color-border);
}

.system-card dt {
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
}

.system-card dd {
  margin: 0;
  color: var(--color-text);
  font-size: 13px;
  text-align: right;
}

.download-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.download-stack > * {
  min-width: 0;
}

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

.download-card.is-featured {
  position: relative;
  background:
    linear-gradient(135deg, var(--color-panel) 58%, var(--color-accent-soft));
}

.download-card.is-featured::before {
  content: "";
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: -1px;
  width: 6px;
  border-radius: var(--radius-pill) 0 0 var(--radius-pill);
  background: var(--color-accent);
}

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

.download-card-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: auto;
}

.download-card-actions .button {
  width: 100%;
  min-height: 48px;
  white-space: normal;
  text-align: center;
}

.package-main {
  padding-top: 13px;
  padding-bottom: 13px;
  font-size: 16px;
}

.package-alt {
  min-height: 46px;
}

.version-slot:not([hidden]) {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  overflow: hidden;
  padding: 4px 9px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-code-bg);
  color: var(--color-text-muted);
  font: 600 12px/1.4 var(--font-mono);
}

.kernel-panel {
  overflow: hidden;
}

.kernel-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(280px, 0.82fr);
  gap: 30px;
  align-items: start;
  margin-bottom: 30px;
}

.kernel-heading h2 {
  margin-top: 15px;
}

.kernel-heading p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.kernel-callout {
  margin: 0;
  background: var(--color-panel);
}

.kernel-table-wrap {
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

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

.kernel-table td:last-child {
  width: 180px;
}

.kernel-button {
  width: 100%;
  min-height: 48px;
  padding-inline: 16px;
}

.kernel-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 28px;
}

.kernel-notes > div {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

.kernel-notes h3 {
  font-size: 21px;
}

.kernel-notes p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.install-guide-grid {
  counter-reset: guide-step;
}

.install-guide-card {
  position: relative;
  overflow: hidden;
  padding-top: 30px;
}

.install-guide-index {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--color-accent-dark);
  font: 800 14px/1 var(--font-mono);
}

.install-guide-index::after {
  content: "";
  width: 54px;
  margin-left: 10px;
  border-top: 2px dashed var(--color-warning);
  transform: translateY(6px);
}

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

@media (max-width: 900px) {
  .download-hero-layout,
  .platform-intro,
  .kernel-heading {
    grid-template-columns: minmax(0, 1fr);
  }

  .download-hero-layout {
    min-height: auto;
    padding-top: 52px;
  }

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

  .platform-tab-list {
    justify-content: flex-start;
  }

  .kernel-callout {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .download-hero-layout {
    padding-top: 38px;
    padding-bottom: 38px;
  }

  .download-hero-lede {
    font-size: 16px;
  }

  .download-route-card::after {
    width: 34px;
    height: 34px;
  }

  .platform-tab-list [role="tab"] {
    padding-inline: 12px;
  }

  .platform-tab-icon {
    width: 28px;
    height: 28px;
    flex-basis: 28px;
  }

  .platform-intro {
    padding: 20px;
  }

  .system-card dl div {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
  }

  .system-card dd {
    text-align: left;
  }

  .download-card-head {
    flex-wrap: wrap;
  }

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