.page-app-download {
  --cad-rail: 232px;
  --cad-soft: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
  --cad-tint: color-mix(in srgb, var(--color-primary) 9%, var(--color-surface));
  background-color: var(--color-surface);
  color: var(--color-ink);
}

/* ============ 首屏：深色版本对照 ============ */
.page-app-download .cad-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) 0 var(--space-8);
}

.page-app-download .cad-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-app-download .cad-hero__bg img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 30%;
}

.page-app-download .cad-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.page-app-download .cad-hero__inner {
  position: relative;
  z-index: 2;
}

.page-app-download .cad-hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  font-size: var(--text-sm);
}

.page-app-download .cad-hero .breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-1);
  color: var(--cad-soft);
}

.page-app-download .cad-hero .breadcrumb a {
  color: var(--color-contrast-accent);
  text-decoration: none;
}

.page-app-download .cad-hero .breadcrumb a:hover,
.page-app-download .cad-hero .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-app-download .cad-hero .breadcrumb li[aria-current="page"] {
  color: var(--cad-soft);
}

/* 关键数字带 */
.page-app-download .cad-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  margin-bottom: var(--space-6);
}

.page-app-download .cad-stat {
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download .cad-stat:first-child {
  border-top: 0;
}

.page-app-download .cad-stat__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-contrast-ink);
}

.page-app-download .cad-stat__unit {
  margin-left: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-contrast-accent);
}

.page-app-download .cad-stat__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--cad-soft);
}

@media (min-width: 700px) {
  .page-app-download .cad-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-app-download .cad-stat {
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-contrast-line);
    padding: var(--space-3);
  }
  .page-app-download .cad-stat:first-child {
    border-left: 0;
    padding-left: 0;
  }
}

/* 主标题 + 版本块 */
.page-app-download .cad-hero__main {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-app-download .cad-hero__eyebrow {
  margin: 0 0 var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-app-download .cad-hero__copy h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.06;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-app-download .cad-hero__lead {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--cad-soft);
}

.page-app-download .cad-hero__versions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-app-download .cad-vcard {
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  background-color: color-mix(in srgb, var(--color-contrast-surface) 74%, transparent);
  padding: var(--space-3);
}

.page-app-download .cad-vcard__no {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-app-download .cad-vcard__name {
  margin: var(--space-1) 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-app-download .cad-vcard__device {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  padding-bottom: var(--space-1);
}

.page-app-download .cad-vcard__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--cad-soft);
}

@media (min-width: 640px) {
  .page-app-download .cad-hero__versions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }
  .page-app-download .cad-vcard {
    border-radius: 0;
  }
  .page-app-download .cad-vcard:nth-child(2) {
    transform: translateY(-16px);
  }
  .page-app-download .cad-vcard:nth-child(3) {
    transform: translateY(-32px);
  }
}

@media (min-width: 960px) {
  .page-app-download .cad-hero {
    padding: var(--space-8) 0 var(--space-8);
  }
  .page-app-download .cad-hero__main {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: var(--space-8);
    align-items: end;
  }
}

/* ============ 正文骨架：目录 + 内容列 ============ */
.page-app-download .cad-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.page-app-download .cad-toc {
  border-top: var(--border-thick) solid var(--color-primary);
  padding-top: var(--space-2);
}

.page-app-download .cad-toc .toc__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-app-download .cad-toc .toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}

.page-app-download .cad-toc .toc__link {
  display: inline-block;
  padding: var(--space-1) 0;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
}

.page-app-download .cad-toc .toc__link:hover,
.page-app-download .cad-toc .toc__link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-app-download .cad-toc .toc__link[aria-current] {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

@media (min-width: 980px) {
  .page-app-download .cad-body {
    grid-template-columns: var(--cad-rail) minmax(0, 1fr);
    gap: var(--space-8);
  }
  .page-app-download .cad-toc {
    position: sticky;
    top: 112px;
    align-self: start;
  }
  .page-app-download .cad-toc .toc__list {
    display: block;
  }
  .page-app-download .cad-toc .toc__link {
    display: block;
    padding: var(--space-1) 0 var(--space-1) var(--space-2);
    border-left: var(--border-thin) solid var(--color-line);
    border-bottom: 0;
  }
  .page-app-download .cad-toc .toc__link[aria-current] {
    border-left-color: var(--color-accent);
    border-left-width: var(--border-thick);
    border-bottom: 0;
  }
}

/* ============ 章节 ============ */
.page-app-download .cad-content {
  min-width: 0;
}

.page-app-download .cad-section {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .cad-section:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-app-download .cad-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.page-app-download .cad-head__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--space-6);
  height: var(--space-6);
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
}

.page-app-download .cad-head__eyebrow {
  margin: 0 0 var(--space-1);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-app-download .cad-head__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-app-download .cad-head__lead {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (min-width: 760px) {
  .page-app-download .cad-head {
    grid-template-columns: var(--space-8) minmax(0, 1fr);
    gap: var(--space-3);
    align-items: start;
  }
  .page-app-download .cad-head__title {
    font-size: var(--text-4xl);
  }
}

/* ============ 获取渠道条目 ============ */
.page-app-download .cad-channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-app-download .cad-channel {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-3);
  background-color: var(--color-surface);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .cad-channel:first-child {
  border-top: 0;
}

.page-app-download .cad-channel:nth-child(even) {
  background-color: var(--color-surface-alt);
}

.page-app-download .cad-channel__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

.page-app-download .cad-channel__body {
  min-width: 0;
}

.page-app-download .cad-channel__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download .cad-channel__title a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-app-download .cad-channel__title a:hover,
.page-app-download .cad-channel__title a:focus-visible {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

.page-app-download .cad-channel__desc {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
}

@media (min-width: 700px) {
  .page-app-download .cad-channel {
    grid-template-columns: var(--space-6) minmax(0, 1fr);
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
  }
}

/* ============ 对照表 ============ */
.page-app-download .cad-tablewrap {
  min-width: 0;
}

.page-app-download .cad-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
}

.page-app-download .cad-table__caption {
  caption-side: top;
  text-align: left;
  padding: var(--space-2) 0;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-app-download .cad-table thead th {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  text-align: left;
  padding: var(--space-2);
  border-left: var(--border-thin) solid color-mix(in srgb, var(--color-primary-ink) 30%, transparent);
}

.page-app-download .cad-table thead th:first-child {
  border-left: 0;
}

.page-app-download .cad-table thead th .mono {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  opacity: 0.72;
}

.page-app-download .cad-table tbody th {
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  background-color: var(--color-surface-deep);
  padding: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .cad-table tbody td {
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
  padding: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thin) solid var(--color-line);
  vertical-align: top;
}

@media (max-width: 759px) {
  .page-app-download .cad-table,
  .page-app-download .cad-table tbody,
  .page-app-download .cad-table tr,
  .page-app-download .cad-table th,
  .page-app-download .cad-table td {
    display: block;
    width: 100%;
  }
  .page-app-download .cad-table thead {
    display: none;
  }
  .page-app-download .cad-table tr {
    border-top: var(--border-thick) solid var(--color-primary);
  }
  .page-app-download .cad-table tbody th {
    background-color: var(--color-primary-soft);
    color: var(--color-ink);
  }
  .page-app-download .cad-table tbody td {
    border-left: 0;
    border-top: var(--border-thin) solid var(--color-line);
  }
  .page-app-download .cad-table tbody td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: var(--space-1);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    color: var(--color-primary);
  }
}

/* ============ 图 ============ */
.page-app-download .cad-figure {
  margin: var(--space-4) 0 0;
}

.page-app-download .cad-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.page-app-download .cad-figure__cap {
  margin-top: var(--space-1);
  font-family: var(--font-heading);
  font-style: italic;
  font-size: var(--text-xs);
  line-height: 1.8;
  color: var(--color-ink-muted);
}

@media (min-width: 760px) {
  .page-app-download .cad-figure--right {
    max-width: 62%;
    margin-left: auto;
  }
}

/* ============ 准备清单 ============ */
.page-app-download .cad-prep-list {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download .cad-prep {
  position: relative;
  padding: var(--space-2) var(--space-3) var(--space-2) var(--space-4);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-app-download .cad-prep::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--border-thick);
  background-color: var(--color-primary);
}

.page-app-download .cad-prep__title {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download .cad-prep__tick {
  flex: none;
  width: var(--space-1);
  height: var(--space-1);
  background-color: var(--color-accent);
}

.page-app-download .cad-prep__desc {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
}

/* ============ 误区列表 ============ */
.page-app-download .cad-myths {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .cad-myth {
  padding: var(--space-3) 0 var(--space-3) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thick) solid var(--color-line);
}

.page-app-download .cad-myth__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.85;
  color: var(--color-ink-soft);
}

.page-app-download .cad-myth__text strong {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 4px;
}

/* ============ 出口 ============ */
.page-app-download .cad-exits {
  display: grid;
  gap: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-app-download .cad-exit {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--color-surface);
  border-top: var(--border-thin) solid var(--color-line);
  color: var(--color-ink);
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-app-download .cad-exit:first-child {
  border-top: 0;
}

.page-app-download .cad-exit__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.page-app-download .cad-exit__body {
  flex: 1 1 auto;
  min-width: 0;
  display: block;
}

.page-app-download .cad-exit__title {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: var(--leading-heading);
}

.page-app-download .cad-exit__desc {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-app-download .cad-exit__go {
  flex: none;
  font-size: var(--text-lg);
  color: var(--color-primary);
}

.page-app-download .cad-exit:hover,
.page-app-download .cad-exit:focus-visible {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: calc(var(--border-thin) * -1);
}

.page-app-download .cad-exit:hover .cad-exit__no,
.page-app-download .cad-exit:focus-visible .cad-exit__no,
.page-app-download .cad-exit:hover .cad-exit__desc,
.page-app-download .cad-exit:focus-visible .cad-exit__desc,
.page-app-download .cad-exit:hover .cad-exit__go,
.page-app-download .cad-exit:focus-visible .cad-exit__go {
  color: var(--color-primary-ink);
}

.page-app-download .cad-figure--end {
  max-width: 100%;
}

@media (min-width: 760px) {
  .page-app-download .cad-figure--end {
    max-width: 58%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download .cad-exit {
    transition: none;
  }
  .page-app-download .cad-vcard:nth-child(2),
  .page-app-download .cad-vcard:nth-child(3) {
    transform: none;
  }
}