:root {
  --download-hero-space: 82px;
  --download-icon-size: 48px;
  --download-tab-icon-size: 17px;
  --download-package-gap: 18px;
  --download-card-padding: 30px;
  --download-table-min-width: 680px;
}

.download-hero {
  position: relative;
  overflow-x: clip;
  padding-top: var(--download-hero-space);
  padding-bottom: var(--download-hero-space);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-page);
}

.download-hero::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 44%;
  height: 100%;
  background:
    repeating-linear-gradient(
      90deg,
      var(--color-line-focus) 0,
      var(--color-line-focus) 1px,
      transparent 1px,
      transparent 9px
    );
  content: "";
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(90deg, transparent, var(--color-ink));
  mask-image: linear-gradient(90deg, transparent, var(--color-ink));
  pointer-events: none;
}

.download-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.7fr);
  align-items: center;
  gap: 72px;
}

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

.download-hero h1 {
  max-width: 700px;
  font-size: clamp(34px, 3.4vw, 48px);
}

.download-lead {
  max-width: 700px;
  margin-bottom: 28px;
  color: var(--color-ink-muted);
  font-size: 18px;
  line-height: 1.8;
}

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

.download-hero .platform-chip {
  color: var(--color-ink);
  box-shadow: 0 1px 3px var(--color-shadow-faint);
}

.download-hero .platform-chip:hover {
  border-color: var(--color-line-focus);
  color: var(--color-brand-deep);
  box-shadow: var(--shadow-card);
}

.download-checklist {
  padding: 30px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
  background: var(--color-page);
  box-shadow: var(--shadow-deep);
  transform: rotate(1deg);
}

.download-checklist-label {
  margin-bottom: 20px;
  color: var(--color-brand-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.download-checklist ol {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.download-checklist li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.download-checklist li > span {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-control);
  background: var(--gradient-brand);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  box-shadow: var(--shadow-button);
}

.download-checklist strong {
  display: block;
  margin-bottom: 2px;
}

.download-checklist p {
  margin: 0;
  color: var(--color-ink-muted);
  font-size: 13px;
  line-height: 1.6;
}

.download-page .tab-list {
  position: sticky;
  top: 10px;
  z-index: 18;
  box-shadow: var(--shadow-card);
}

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

.download-page .tab-list svg {
  width: var(--download-tab-icon-size);
  height: var(--download-tab-icon-size);
  flex: 0 0 auto;
}

.download-page .tab-panel {
  grid-column: 1;
  grid-row: 1;
  padding-top: 38px;
}

.platform-intro {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 24px;
}

.platform-intro h3 {
  margin-bottom: 8px;
  font-size: 25px;
}

.platform-intro p:last-child {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--color-ink-muted);
}

.version-pill {
  display: inline-flex;
  min-height: 36px;
  max-width: 100%;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  overflow: hidden;
  border: 1px solid var(--color-line-focus);
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-brand-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.download-client-card {
  padding: var(--download-card-padding);
}

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

.download-client-card .badge-row {
  margin-bottom: 9px;
}

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

.package-choice {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-panel);
}

.package-choice-primary {
  border-color: var(--color-line-focus);
  background: var(--color-page);
  box-shadow: 0 2px 6px var(--color-shadow-faint);
}

.package-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.package-kicker {
  display: block;
  margin-bottom: 5px;
  color: var(--color-brand-deep);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.package-heading h4 {
  margin-bottom: 0;
  font-size: 19px;
}

.package-format {
  display: inline-flex;
  min-height: 28px;
  max-width: 100%;
  align-items: center;
  padding: 4px 9px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.package-choice p {
  margin-bottom: 22px;
  color: var(--color-ink-muted);
  font-size: 14px;
  line-height: 1.75;
}

.package-button {
  width: 100%;
  min-height: 50px;
  margin-top: auto;
}

.architecture-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  margin-top: 12px;
  padding: 8px 12px;
  color: var(--color-brand-deep);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.architecture-link:hover {
  color: var(--color-brand);
  text-decoration: underline;
}

.requirements-block {
  margin-top: 34px;
  padding: 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-page);
  box-shadow: 0 2px 6px var(--color-shadow-faint);
}

.requirements-block h3 {
  margin-bottom: 20px;
  font-size: 20px;
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.requirements-block .data-table th:first-child,
.requirements-block .data-table td:first-child {
  width: 24%;
}

.android-client-stack {
  display: grid;
  gap: 24px;
}

.selection-guide {
  border-top: 1px solid var(--color-line);
}

.selection-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 26px;
  padding-top: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-line);
}

.selection-index {
  color: var(--color-brand);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.selection-row h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.selection-row p {
  max-width: 880px;
  margin-bottom: 0;
  color: var(--color-ink-muted);
}

.install-flow-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 72px;
  align-items: start;
}

.install-flow-layout .section-heading {
  position: sticky;
  top: 24px;
  margin-bottom: 0;
}

.install-flow-layout .button-row {
  margin-top: 28px;
}

.install-flow {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.install-flow li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-page);
  box-shadow: 0 2px 6px var(--color-shadow-faint);
}

.install-flow li > span {
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-control);
  background: var(--gradient-brand);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 750;
}

.install-flow h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.install-flow p {
  margin-bottom: 0;
  color: var(--color-ink-muted);
  font-size: 14px;
}

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

  .download-hero-layout {
    gap: 42px;
  }

  .download-checklist {
    max-width: 620px;
    transform: none;
  }

  .install-flow-layout {
    gap: 42px;
  }

  .install-flow-layout .section-heading {
    position: static;
  }
}

@media (max-width: 768px) {
  :root {
    --download-hero-space: 60px;
    --download-card-padding: 22px;
  }

  .download-hero h1 {
    font-size: clamp(26px, 7.5vw, 30px);
  }

  .download-lead {
    font-size: 16px;
  }

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

  .platform-intro {
    flex-direction: column;
  }

  .package-grid {
    grid-template-columns: 1fr;
  }

  .selection-row {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 16px;
  }
}

@media (max-width: 640px) {
  .download-hero::before {
    width: 72%;
    opacity: 0.34;
  }

  .download-checklist {
    padding: 22px;
  }

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

  .download-page .tab-list [role="tab"] {
    flex: 0 0 auto;
    padding-inline: 15px;
  }

  .platform-intro h3 {
    font-size: 22px;
  }

  .package-choice,
  .requirements-block {
    padding: 20px;
  }

  .package-heading {
    gap: 10px;
  }

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

  .install-flow li {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 14px;
    padding: 20px;
  }

  .install-flow li > span {
    width: 40px;
    height: 40px;
  }
}