.page-app-download {
  --ad-node-offset: 0px;
  background: var(--color-surface);
  color: var(--color-ink);
}

.page-app-download .section,
.page-app-download .section--lg,
.page-app-download .section--deep {
  padding-block: var(--space-8);
}

.page-app-download .ad-head {
  margin-bottom: var(--space-6);
}

.page-app-download .ad-head__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  color: var(--color-accent);
}

.page-app-download .ad-head__title {
  margin: var(--space-1) 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

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

.page-app-download .prose p {
  margin: 0 0 var(--space-3);
}

.page-app-download .prose p:last-child {
  margin-bottom: 0;
}

/* ---------- 首屏 ---------- */

.page-app-download .ad-hero {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-hero__grid {
  display: grid;
  gap: var(--space-4);
}

.page-app-download .ad-hero__lead {
  padding: var(--space-4) var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-app-download .ad-hero__lead .eyebrow {
  margin: 0;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-app-download .ad-hero__no {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--color-contrast-accent);
}

.page-app-download .ad-hero__lead .display {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-app-download .ad-hero__intro {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-app-download .ad-hero__flag {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-app-download .ad-hero__modes {
  background: var(--color-surface-alt);
  padding: var(--space-3);
}

.page-app-download .ad-hero__modes-label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-app-download .ad-modes {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-modes__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-modes__no {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.page-app-download .ad-modes__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download .ad-modes__desc {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .ad-hero__figures {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-app-download .ad-hero__fig img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 7 / 10;
  filter: grayscale(0.5) contrast(1.08);
}

.page-app-download .ad-figs {
  margin: var(--space-2) 0 0;
}

/* ---------- 对照表 ---------- */

.page-app-download .ad-table-scroll {
  overflow-x: auto;
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-table {
  width: 100%;
  min-width: 920px;
  border-collapse: collapse;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}

.page-app-download .ad-table__caption {
  caption-side: top;
  text-align: left;
  padding: var(--space-2) 0;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-app-download .ad-table th,
.page-app-download .ad-table td {
  text-align: left;
  vertical-align: top;
  padding: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-table thead th {
  background: var(--color-surface-deep);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-app-download .ad-table__corner {
  color: var(--color-ink-muted);
}

.page-app-download .ad-col-head {
  cursor: default;
}

.page-app-download .ad-col-head__no {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-app-download .ad-group th[scope="colgroup"] {
  background: var(--color-surface-alt);
  padding-block: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.18em;
  color: var(--color-ink-muted);
}

.page-app-download .ad-row__label {
  width: 210px;
  font-size: var(--text-sm);
  font-weight: var(--weight-body);
  color: var(--color-ink);
}

.page-app-download .ad-row__note {
  display: block;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
  transition: max-height 240ms ease, opacity 240ms ease, margin-top 240ms ease;
}

.page-app-download .ad-table tbody tr:hover .ad-row__note,
.page-app-download .ad-table tbody tr:focus-within .ad-row__note {
  max-height: 8em;
  margin-top: var(--space-1);
  opacity: 1;
}

.page-app-download .ad-table tbody tr:hover th[scope="row"] {
  background: var(--color-highlight);
}

.page-app-download .ad-table tbody td {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-app-download .ad-table:has(.ad-col-head[data-col="web"]:hover) [data-col="web"],
.page-app-download .ad-table:has(.ad-col-head[data-col="web"]:focus-visible) [data-col="web"],
.page-app-download .ad-table:has(.ad-col-head[data-col="cal"]:hover) [data-col="cal"],
.page-app-download .ad-table:has(.ad-col-head[data-col="cal"]:focus-visible) [data-col="cal"],
.page-app-download .ad-table:has(.ad-col-head[data-col="msg"]:hover) [data-col="msg"],
.page-app-download .ad-table:has(.ad-col-head[data-col="msg"]:focus-visible) [data-col="msg"],
.page-app-download .ad-table:has(.ad-col-head[data-col="screen"]:hover) [data-col="screen"],
.page-app-download .ad-table:has(.ad-col-head[data-col="screen"]:focus-visible) [data-col="screen"] {
  background: var(--color-primary-soft);
}

.page-app-download .ad-wide-fig {
  margin-top: var(--space-6);
}

.page-app-download .ad-wide-fig img {
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  filter: grayscale(0.45) contrast(1.1);
}

/* ---------- 字段范围 ---------- */

.page-app-download .ad-fields__grid {
  display: grid;
  gap: var(--space-6);
}

.page-app-download .ad-fields__side .prose {
  margin-top: var(--space-2);
}

.page-app-download .ad-fields__side .frame {
  margin: var(--space-4) 0 var(--space-2);
}

.page-app-download .ad-fields__side img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: grayscale(0.5) contrast(1.08);
}

.page-app-download .ad-field-list {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-field {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0 var(--space-3) var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-field__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
}

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

/* ---------- 推送节奏（深色区块） ---------- */

.page-app-download .ad-rhythm {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-app-download .ad-rhythm__grid {
  display: grid;
  gap: var(--space-6);
}

.page-app-download .ad-rhythm .ad-head__title {
  color: var(--color-contrast-ink);
}

.page-app-download .ad-rhythm .ad-head__no {
  color: var(--color-contrast-accent);
}

.page-app-download .ad-rhythm .prose {
  color: var(--color-contrast-ink);
}

.page-app-download .ad-rhythm__side {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-app-download .ad-rhythm__side img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: grayscale(0.55) contrast(1.12);
}

.page-app-download .ad-rhythm .plate {
  color: var(--color-contrast-ink);
  border-left-color: var(--color-contrast-line);
  opacity: 0.72;
}

.page-app-download .ad-rhythm__list {
  margin: var(--space-2) 0 0;
}

.page-app-download .ad-rhythm .data-row {
  border-bottom-color: var(--color-contrast-line);
}

.page-app-download .ad-rhythm .data-row__label {
  color: var(--color-contrast-ink);
}

.page-app-download .ad-rhythm .data-row__value {
  color: var(--color-contrast-accent);
}

/* ---------- 准备条件技能树 ---------- */

.page-app-download .ad-tree {
  border-left: var(--border-thin) solid var(--color-line);
  padding-left: var(--space-3);
}

.page-app-download .ad-node {
  position: relative;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-node:first-child {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-node::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-3) - 1px);
  top: var(--space-3);
  width: var(--space-2);
  height: var(--border-thin);
  background: var(--color-primary);
}

.page-app-download .ad-node__head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  cursor: pointer;
  list-style: none;
}

.page-app-download .ad-node__head::-webkit-details-marker {
  display: none;
}

.page-app-download .ad-node__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-primary);
}

.page-app-download .ad-node[open] .ad-node__head::after {
  content: "–";
}

.page-app-download .ad-node__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.page-app-download .ad-node__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download .ad-node__body {
  padding: 0 0 var(--space-3) var(--space-4);
}

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

/* ---------- 选择路径 ---------- */

.page-app-download .ad-paths {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .ad-path-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

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

.page-app-download .ad-path__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  color: var(--color-accent);
}

.page-app-download .ad-path__title {
  margin: var(--space-1) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.page-app-download .ad-tail {
  margin: var(--space-6) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-app-download .section,
  .page-app-download .section--lg {
    padding-block: var(--section-y);
  }

  .page-app-download .section--deep {
    padding-block: var(--section-y-lg);
  }

  .page-app-download .ad-head__title {
    font-size: var(--text-2xl);
  }

  .page-app-download .ad-hero__lead {
    padding: var(--space-6) var(--space-4);
  }

  .page-app-download .ad-fields__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .page-app-download .ad-rhythm__grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-app-download .ad-path-list {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }
}

@media (min-width: 1024px) {
  .page-app-download .ad-hero__grid {
    grid-template-columns: 5fr 4fr 3fr;
    gap: var(--space-3);
    align-items: start;
  }

  .page-app-download .ad-hero__modes {
    margin-top: var(--space-8);
  }

  .page-app-download .ad-hero__figures {
    margin-top: calc(var(--space-8) * 2);
  }

  .page-app-download .ad-field-list {
    grid-template-columns: 1fr 1fr;
  }

  .page-app-download .ad-field {
    padding-right: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download .ad-row__note {
    max-height: none;
    margin-top: var(--space-1);
    opacity: 1;
    transition: none;
  }

  .page-app-download .ad-node__head {
    scroll-behavior: auto;
  }
}