.download-hero {
  padding-top: 82px;
  padding-bottom: 88px;
  overflow-x: clip;
}

.download-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 1.14fr);
  align-items: center;
  gap: clamp(48px, 7vw, 104px);
}

.download-hero-copy {
  max-width: 620px;
}

.download-hero-copy h1 {
  margin-bottom: 28px;
}

.download-facts {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.download-route-board {
  min-height: 510px;
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--color-accent-deep);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(var(--color-board-line), var(--color-board-line)) 0 33% / 100% 1px no-repeat,
    linear-gradient(var(--color-board-line), var(--color-board-line)) 0 66% / 100% 1px no-repeat,
    linear-gradient(135deg, var(--color-accent-black), var(--color-accent-dark));
  color: var(--color-cold-line);
  box-shadow: var(--shadow-window);
}

.route-board-head {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-board-line-strong);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--color-cold-line-soft);
  font-size: 11px;
  letter-spacing: 0.07em;
}

.route-board-status {
  color: var(--color-white-soft);
}

.route-steps {
  margin: 0;
  padding: 28px 0;
  display: grid;
  gap: 8px;
  list-style: none;
}

.route-steps li {
  min-height: 98px;
  padding: 18px 0;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
}

.route-step-index {
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-board-line-strong);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--color-cold-line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
}

.route-steps strong {
  color: var(--color-white-soft);
  font-weight: var(--weight-medium);
}

.route-steps p {
  margin: 5px 0 0;
  color: var(--color-cold-line-soft);
  font-size: 13px;
  line-height: 1.6;
}

.route-board-note {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--color-board-line-strong);
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--color-cold-line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
}

.route-line {
  width: 52px;
  height: 1px;
  position: relative;
  display: block;
  background: var(--color-cold-line);
}

.route-line::after {
  width: 6px;
  height: 6px;
  position: absolute;
  top: -2px;
  right: 0;
  border-radius: var(--radius-pill);
  background: var(--color-cold-line);
  content: "";
}

.download-tabs .tab-list {
  position: sticky;
  top: 8px;
  z-index: 12;
  box-shadow: var(--shadow-card);
}

.platform-intro {
  margin-bottom: 26px;
  padding: 24px 26px;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
  background: var(--color-accent-soft);
}

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

.platform-intro p {
  max-width: 860px;
  margin-bottom: 0;
  color: var(--color-muted);
}

.platform-code {
  padding-top: 5px;
  flex: 0 0 auto;
  color: var(--color-accent-dark);
  font-size: 10px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.download-client-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.download-card-head > div {
  min-width: 0;
}

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

.download-card-title {
  overflow-wrap: anywhere;
}

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

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

.ios-feature-card {
  min-height: 300px;
}

.official-site-line {
  margin-top: -7px;
  color: var(--color-muted);
  font-size: 13px;
}

.official-site-line a,
.core-download-link {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  text-decoration: underline;
  text-decoration-color: var(--color-cold-line-soft);
  text-underline-offset: 3px;
}

.requirement-block {
  margin-top: 42px;
}

.requirement-block h3 {
  margin-bottom: 18px;
}

.core-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  align-items: start;
  gap: clamp(42px, 7vw, 88px);
}

.core-copy {
  position: sticky;
  top: 28px;
}

.core-table-panel {
  min-width: 0;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.core-table {
  min-width: 640px;
}

.core-table td:last-child {
  white-space: nowrap;
}

.core-footnote {
  margin: 18px 2px 0;
  color: var(--color-muted);
  font-size: 13px;
}

.selection-strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.selection-step {
  padding: 32px;
  position: relative;
}

.selection-step + .selection-step {
  border-left: 1px solid var(--color-border);
}

.selection-number {
  margin-bottom: 30px;
  display: block;
  color: var(--color-accent);
  font-size: 12px;
}

.selection-step h3 {
  font-size: 22px;
}

.selection-step p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.install-reading {
  max-width: 900px;
  margin-top: 50px;
  padding-left: clamp(22px, 4vw, 48px);
  border-left: 1px solid var(--color-accent);
}

.install-reading p {
  color: var(--color-muted);
}

.faq-more {
  margin-top: 42px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--color-panel);
}

.faq-more p {
  margin-bottom: 0;
  color: var(--color-muted);
}

@media (max-width: 980px) {
  .download-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
    gap: 40px;
  }

  .download-route-board {
    min-height: 470px;
  }

  .core-layout {
    grid-template-columns: 1fr;
  }

  .core-copy {
    position: static;
  }

  .selection-step {
    padding: 26px 22px;
  }
}

@media (max-width: 760px) {
  .download-hero {
    padding-top: 58px;
    padding-bottom: 70px;
  }

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

  .download-route-board {
    min-height: 0;
  }

  .platform-intro {
    flex-direction: column;
    gap: 12px;
  }

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

  .selection-step + .selection-step {
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }

  .selection-number {
    margin-bottom: 18px;
  }

  .faq-more {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .download-hero {
    padding-top: 46px;
    padding-bottom: 58px;
  }

  .download-hero-copy .lead {
    font-size: 15px;
  }

  .download-route-board {
    padding: 22px;
  }

  .route-board-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .route-steps li {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 12px;
  }

  .route-step-index {
    width: 36px;
    height: 36px;
  }

  .platform-intro {
    padding: 20px;
  }

  .platform-code {
    max-width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .download-card-actions .button {
    width: 100%;
  }

  .core-table-panel {
    padding: 16px;
  }

  .install-reading {
    padding-left: 20px;
  }

  .faq-more .button {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .download-route-board {
    padding: 18px;
  }

  .route-steps li {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 9px;
  }

  .download-card-head {
    gap: 12px;
  }

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