/* ===== 客户端与版本对比 /client/ ===== */

.page-app-download {
  --cmp-node: 8px;
}

.page-app-download .cmp-section {
  scroll-margin-top: calc(var(--space-6) + var(--space-4));
}

.page-app-download .cmp-head {
  max-width: var(--measure);
}

.page-app-download .cmp-section .section-title {
  font-size: var(--text-2xl);
  color: var(--color-ink);
  line-height: var(--leading-heading);
}

/* ---------- 首屏 ---------- */

.page-app-download .cmp-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) 0 var(--space-6);
}

.page-app-download .cmp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(90deg, color-mix(in srgb, var(--color-contrast-line) 62%, transparent) 1px, transparent 1px),
    linear-gradient(180deg, color-mix(in srgb, var(--color-contrast-line) 62%, transparent) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.45;
  pointer-events: none;
}

.page-app-download .cmp-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: -12%;
  width: 58%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(148deg, color-mix(in srgb, var(--color-accent) 26%, transparent) 0%, transparent 64%);
  pointer-events: none;
}

.page-app-download .cmp-hero .breadcrumb-link {
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

.page-app-download .cmp-hero .breadcrumb-link:hover,
.page-app-download .cmp-hero .breadcrumb-link:focus-visible {
  color: var(--color-contrast-accent);
}

.page-app-download .cmp-crumb-current {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
}

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

.page-app-download .cmp-kicker {
  margin: var(--space-3) 0 0;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-app-download .cmp-title {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  max-width: 15em;
}

.page-app-download .cmp-lede {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
  max-width: 46em;
}

.page-app-download .cmp-plan-heads {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-app-download .cmp-plan-head {
  position: relative;
  padding: var(--space-3) var(--space-2) var(--space-3) 0;
  border-top: var(--border-thick) solid var(--color-contrast-line);
}

.page-app-download .cmp-plan-head::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: var(--cmp-node);
  height: var(--cmp-node);
  background: var(--color-contrast-accent);
  transform: translateY(-50%);
}

.page-app-download .cmp-plan-code {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.page-app-download .cmp-plan-name {
  display: block;
  margin: var(--space-1) 0 calc(var(--space-1) / 2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-contrast-ink);
}

.page-app-download .cmp-plan-note {
  display: block;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-app-download .cmp-figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download .cmp-figure {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-1) / 2);
}

.page-app-download .cmp-figure-num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-contrast-accent);
}

.page-app-download .cmp-figure-label {
  font-size: var(--text-xs);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

/* ---------- 图片通用框 ---------- */

.page-app-download .cmp-frame {
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-alt);
}

.page-app-download .cmp-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 首屏下方并列骨架图 ---------- */

.page-app-download .cmp-strip {
  padding: var(--space-6) 0 0;
}

.page-app-download .cmp-strip-frame img {
  aspect-ratio: 16 / 10;
}

.page-app-download .cmp-strip-caption {
  margin: var(--space-1) 0 0;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 本页导航 ---------- */

.page-app-download .cmp-jump {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding-top: var(--space-6);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .cmp-jump-label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-app-download .cmp-jump-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 180ms ease-out, border-color 180ms ease-out;
}

.page-app-download .cmp-jump-link:hover,
.page-app-download .cmp-jump-link:focus-visible,
.page-app-download .cmp-jump-link[data-active] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 对比表 ---------- */

.page-app-download .cmp-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  margin: var(--space-3) 0 var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-app-download .cmp-legend-item {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space-1) * 0.75);
}

.page-app-download .cmp-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.page-app-download .cmp-table {
  width: 100%;
  min-width: 780px;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: var(--text-sm);
  line-height: 1.6;
}

.page-app-download .cmp-table-caption {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .cmp-table thead th {
  background: var(--color-surface-deep);
  text-align: left;
  vertical-align: bottom;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .cmp-table .cmp-th-cap {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
  font-weight: 500;
}

.page-app-download .cmp-th-code {
  display: block;
  margin-bottom: calc(var(--space-1) / 2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-app-download .cmp-table th:first-child,
.page-app-download .cmp-table td:first-child {
  width: 28%;
}

.page-app-download .cmp-table th:nth-child(n + 2),
.page-app-download .cmp-table td:nth-child(n + 2) {
  width: 24%;
}

.page-app-download .cmp-table th[scope="row"] {
  text-align: left;
  vertical-align: top;
  padding: var(--space-3);
  border-bottom: var(--border-thin) dotted var(--color-line);
  background: var(--color-surface);
}

.page-app-download .cmp-table td {
  vertical-align: top;
  padding: var(--space-3);
  border-bottom: var(--border-thin) dotted var(--color-line);
  color: var(--color-ink-soft);
  transition: background 180ms ease-out;
}

.page-app-download .cmp-table tbody tr:hover td,
.page-app-download .cmp-table tbody tr:hover th[scope="row"] {
  background: var(--color-surface-alt);
}

.page-app-download .cmp-table:has(tbody td:nth-child(2):hover) td:nth-child(2),
.page-app-download .cmp-table:has(tbody td:nth-child(3):hover) td:nth-child(3),
.page-app-download .cmp-table:has(tbody td:nth-child(4):hover) td:nth-child(4) {
  background: var(--color-highlight);
}

.page-app-download .cmp-group-row th {
  background: var(--color-surface-alt);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-align: left;
  color: var(--color-primary);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .cmp-cap {
  display: block;
  margin-bottom: calc(var(--space-1) / 2);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-ink);
}

.page-app-download .cmp-impact {
  display: block;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-ink-muted);
}

.page-app-download .cmp-cell {
  color: var(--color-ink-soft);
}

.page-app-download .cmp-dot {
  display: inline-block;
  width: var(--cmp-node);
  height: var(--cmp-node);
  margin-right: calc(var(--space-1) * 0.75);
  vertical-align: 1px;
  flex: none;
}

.page-app-download .cmp-dot--same {
  border-radius: 50%;
  background: var(--color-primary);
}

.page-app-download .cmp-dot--part {
  border-radius: 50%;
  background: transparent;
  box-shadow: inset 0 0 0 var(--border-thick) var(--color-accent);
}

.page-app-download .cmp-dot--diff {
  border-radius: 2px;
  background: var(--color-ink-muted);
}

.page-app-download .cmp-scroll-hint {
  margin: var(--space-1) 0 0;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 选择建议 ---------- */

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

.page-app-download .cmp-advice {
  position: relative;
  margin-left: var(--space-2);
  margin-bottom: var(--space-4);
  padding: var(--space-2) 0 var(--space-2) var(--space-3);
  border-left: var(--border-thick) solid var(--color-accent);
}

.page-app-download .cmp-advice-list .cmp-advice:last-of-type {
  margin-bottom: var(--space-3);
}

.page-app-download .cmp-advice-code {
  display: block;
  margin-bottom: calc(var(--space-1) / 2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

.page-app-download .cmp-advice-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-ink);
}

.page-app-download .cmp-advice-text {
  margin: 0 0 var(--space-1);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-app-download .cmp-advice-pick {
  display: inline-block;
  padding: calc(var(--space-1) / 2) var(--space-1);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

/* ---------- 获取与准备 ---------- */

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

.page-app-download .cmp-prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: prep;
}

.page-app-download .cmp-prep-item {
  counter-increment: prep;
  position: relative;
  padding: var(--space-3) 0 var(--space-3) var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .cmp-prep-item::before {
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  top: var(--space-3);
  left: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.page-app-download .cmp-prep-item::after {
  content: "";
  position: absolute;
  top: var(--space-3);
  left: 0;
  width: var(--cmp-node);
  height: var(--cmp-node);
  transform: translate(-50%, 0);
  background: transparent;
}

.page-app-download .cmp-prep-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-ink);
}

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

.page-app-download .cmp-prep-text a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-app-download .cmp-prep-text a:hover,
.page-app-download .cmp-prep-text a:focus-visible {
  color: var(--color-focus);
}

/* ---------- 兼容与适配 ---------- */

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

.page-app-download .cmp-compat-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-app-download .cmp-compat-item {
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .cmp-compat-key {
  display: block;
  margin-bottom: calc(var(--space-1) / 2);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.page-app-download .cmp-compat-val {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 前往帮助 ---------- */

.page-app-download .cmp-eyebrow-dark {
  color: var(--color-contrast-accent);
}

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

.page-app-download .cmp-support-title {
  color: var(--color-contrast-ink);
  max-width: 20em;
}

.page-app-download .cmp-support-text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: 1.8;
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}

.page-app-download .cmp-support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------- 响应式 ---------- */

@media (min-width: 660px) {
  .page-app-download .cmp-plan-heads {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 var(--space-3);
  }

  .page-app-download .cmp-compat-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3) var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-app-download .cmp-hero {
    padding: var(--space-8) 0 var(--space-6);
  }

  .page-app-download .cmp-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--space-8);
    align-items: end;
  }

  .page-app-download .cmp-section .section-title {
    font-size: var(--text-3xl);
  }

  .page-app-download .cmp-choose {
    grid-template-columns: minmax(0, 1.24fr) minmax(0, 0.76fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-app-download .cmp-prep {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-app-download .cmp-compat {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-app-download .cmp-support {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: var(--space-8);
  }

  .page-app-download .cmp-scroll-hint {
    display: none;
  }
}

@media (min-width: 1024px) {
  .page-app-download .cmp-figures {
    gap: var(--space-4);
  }
}