.download-hero {
  position: relative;
  min-height: 680px;
  overflow: hidden;
  border-bottom: var(--line-medium) solid var(--color-border-bright);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--color-grid-minor) var(--line-thin), var(--color-transparent) var(--line-thin)),
    linear-gradient(90deg, var(--color-grid-minor) var(--line-thin), var(--color-transparent) var(--line-thin)),
    linear-gradient(var(--color-grid-major) var(--line-thin), var(--color-transparent) var(--line-thin)),
    linear-gradient(90deg, var(--color-grid-major) var(--line-thin), var(--color-transparent) var(--line-thin));
  background-size: 24px 24px, 24px 24px, 120px 120px, 120px 120px;
}

.download-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, var(--color-transparent), var(--color-panel-soft)),
    linear-gradient(180deg, var(--color-transparent), var(--color-bg));
  pointer-events: none;
}

.download-hero::after {
  position: absolute;
  right: -180px;
  bottom: -330px;
  width: 820px;
  height: 620px;
  content: "";
  border: var(--line-thin) solid var(--color-grid-focus);
  background:
    repeating-linear-gradient(90deg, var(--color-transparent) 0 58px, var(--color-grid-focus) 59px 60px),
    repeating-linear-gradient(0deg, var(--color-transparent) 0 44px, var(--color-grid-focus) 45px 46px);
  opacity: 0.34;
  transform: perspective(480px) rotateX(61deg);
  transform-origin: center bottom;
  pointer-events: none;
}

.download-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, 0.8fr);
  gap: var(--space-7);
  align-items: center;
  min-height: 680px;
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.download-hero-copy {
  max-width: 760px;
}

.download-hero-copy h1 {
  margin-bottom: var(--space-4);
  font-size: clamp(3.7rem, 7vw, 6.5rem);
  line-height: 0.94;
  text-shadow: 6px 6px 0 var(--color-panel-3);
}

.download-hero-lead {
  max-width: 680px;
  margin-bottom: var(--space-4);
  padding-left: var(--space-3);
  border-left: var(--line-heavy) solid var(--color-accent);
  font-size: 1.04rem;
}

.download-hero-copy .chip-row {
  margin-top: var(--space-4);
}

.download-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 17px;
  margin-top: var(--space-5);
}

.package-gate {
  position: relative;
  min-height: 510px;
  border: var(--line-medium) solid var(--color-text);
  background: var(--color-panel);
  box-shadow: var(--shadow-device);
}

.package-gate::before {
  position: absolute;
  inset: 10px;
  content: "";
  border: var(--line-thin) solid var(--color-grid-focus);
  background: repeating-linear-gradient(
    0deg,
    var(--color-scan) 0 2px,
    var(--color-transparent) 2px 10px
  );
  pointer-events: none;
}

.package-gate-head {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 54px;
  padding: 0 var(--space-3);
  border-bottom: var(--line-medium) solid var(--color-border-bright);
  background: var(--color-panel-2);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
}

.package-gate-body {
  position: relative;
  z-index: 2;
  padding: var(--space-4);
}

.gate-layer {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
  min-height: 82px;
  padding: var(--space-3);
  border: var(--line-thin) solid var(--color-border);
  border-bottom: 0;
  background: var(--color-panel-2);
}

.gate-layer:last-child {
  border-bottom: var(--line-thin) solid var(--color-border);
}

.gate-layer-current {
  border-left: var(--line-heavy) solid var(--color-accent);
  background: var(--color-accent-soft);
}

.gate-index {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: var(--line-thin) solid var(--color-success);
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.gate-layer strong,
.gate-layer small {
  display: block;
}

.gate-layer strong {
  margin-bottom: 4px;
}

.gate-layer small {
  line-height: 1.5;
}

.gate-route {
  position: relative;
  z-index: 2;
  width: calc(100% - (var(--space-4) * 2));
  height: 116px;
  margin: 0 var(--space-4) var(--space-3);
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel-2);
}

.gate-stamp {
  position: absolute;
  right: -18px;
  bottom: -28px;
  z-index: 4;
  display: grid;
  place-items: center;
  width: 116px;
  height: 116px;
  border: var(--line-heavy) solid var(--color-accent);
  color: var(--color-accent);
  background: var(--color-bg);
  font-family: var(--font-mono);
  line-height: 1.2;
  text-align: center;
  transform: rotate(-7deg);
  clip-path: polygon(9% 0, 91% 0, 100% 9%, 100% 91%, 91% 100%, 9% 100%, 0 91%, 0 9%);
}

.gate-stamp::before {
  position: absolute;
  inset: 7px;
  content: "";
  border: var(--line-medium) solid var(--color-accent);
}

.gate-stamp span,
.gate-stamp strong {
  position: relative;
  display: block;
}

.gate-stamp span {
  font-size: 0.52rem;
  letter-spacing: 0.1em;
}

.gate-stamp strong {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.06em;
}

.selection-rail {
  border-top: var(--line-medium) solid var(--color-border-bright);
}

.selection-step {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: var(--space-5);
  padding-top: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: var(--line-thin) solid var(--color-border);
}

.selection-step h3 {
  margin-bottom: var(--space-2);
}

.selection-step p {
  max-width: 900px;
  margin-bottom: 0;
}

.selection-number {
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.download-tabs {
  box-shadow: none;
}

.platform-intro {
  display: grid;
  grid-template-columns: minmax(220px, 0.48fr) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: end;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: var(--line-thin) solid var(--color-border);
}

.platform-intro h3 {
  margin-top: var(--space-2);
  margin-bottom: 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.platform-intro p {
  margin-bottom: 0;
}

.download-card {
  min-height: 390px;
}

.download-card p {
  line-height: 1.8;
}

.package-facts {
  display: grid;
  gap: 7px;
  margin: 0 0 var(--space-4);
  padding: var(--space-3);
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel-2);
  list-style: none;
}

.package-facts li {
  position: relative;
  padding-left: 15px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.55;
}

.package-facts li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 5px;
  height: 5px;
  content: "";
  background: var(--color-success);
}

.text-link {
  color: var(--color-success);
  text-decoration: underline;
  text-decoration-color: var(--color-border-bright);
  text-underline-offset: 0.2em;
}

.requirements-block {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--line-medium) solid var(--color-border-bright);
}

.requirements-block h3 {
  margin-bottom: var(--space-4);
}

.ios-single {
  max-width: 780px;
}

.ios-single .download-card {
  min-height: 330px;
}

.core-matrix {
  display: grid;
  gap: var(--space-3);
}

.core-lane {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: center;
  padding: var(--space-4);
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.core-lane:nth-child(2) {
  background: var(--color-panel-2);
}

.core-lane-head p {
  margin-bottom: 0;
}

.core-os {
  display: inline-flex;
  margin-bottom: var(--space-2);
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.core-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.core-requirements {
  margin-top: var(--space-5);
}

.install-sequence {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: var(--line-medium) solid var(--color-border-bright);
  counter-reset: install-step;
  list-style: none;
}

.install-sequence li {
  position: relative;
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: var(--space-4);
  padding-top: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: var(--line-thin) solid var(--color-border);
  counter-increment: install-step;
}

.install-sequence li::before {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  content: counter(install-step, decimal-leading-zero);
  border: var(--line-medium) solid var(--color-success);
  color: var(--color-success);
  background: var(--color-success-soft);
  font-family: var(--font-mono);
  font-weight: 800;
}

.install-sequence h3 {
  margin-bottom: var(--space-2);
}

.install-sequence p {
  max-width: 920px;
  margin-bottom: 0;
}

.install-links {
  margin-top: var(--space-5);
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.faq-heading {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-4));
}

.faq-heading p:last-child {
  margin-bottom: 0;
}

@media (max-width: 1100px) {
  .download-hero-grid {
    grid-template-columns: minmax(0, 1fr) 410px;
    gap: var(--space-5);
  }

  .download-hero-copy h1 {
    font-size: clamp(3.3rem, 6.5vw, 5rem);
  }

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

  .download-card {
    min-height: 0;
  }
}

@media (max-width: 900px) {
  .download-hero {
    min-height: 1020px;
  }

  .download-hero-grid {
    display: block;
    min-height: 1020px;
    padding-top: var(--space-6);
  }

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

  .package-gate {
    max-width: 560px;
    min-height: 510px;
    margin-top: var(--space-6);
  }

  .platform-intro,
  .core-lane,
  .faq-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .core-actions {
    justify-content: flex-start;
  }

  .faq-heading {
    position: static;
  }
}

@media (max-width: 640px) {
  .download-hero {
    min-height: 1010px;
  }

  .download-hero-grid {
    min-height: 1010px;
    padding-top: var(--space-5);
    padding-bottom: var(--space-5);
  }

  .download-hero-copy h1 {
    font-size: clamp(2.75rem, 14vw, 4rem);
  }

  .download-hero-lead {
    font-size: 0.96rem;
  }

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

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

  .package-gate {
    min-height: 480px;
    margin-top: var(--space-5);
    box-shadow: var(--shadow-panel);
  }

  .package-gate-head {
    font-size: 0.57rem;
  }

  .package-gate-body {
    padding: var(--space-3);
  }

  .gate-layer {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: var(--space-2);
    min-height: 76px;
    padding: var(--space-2);
  }

  .gate-index {
    width: 36px;
    height: 36px;
  }

  .gate-route {
    width: calc(100% - (var(--space-3) * 2));
    margin-right: var(--space-3);
    margin-left: var(--space-3);
  }

  .gate-stamp {
    right: 4px;
    bottom: -22px;
    width: 96px;
    height: 96px;
    transform: none;
  }

  .selection-step {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

  .selection-number {
    font-size: 1.4rem;
  }

  .platform-intro {
    gap: var(--space-3);
  }

  .download-card-actions {
    align-items: stretch;
    flex-direction: column;
  }

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

  .package-facts {
    padding: var(--space-2);
  }

  .core-lane {
    gap: var(--space-4);
    padding: var(--space-3);
  }

  .core-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .core-actions .button {
    width: 100%;
  }

  .install-sequence li {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

  .install-sequence li::before {
    width: 50px;
    height: 50px;
  }

  .install-links .button {
    width: 100%;
  }
}