.page-downloads {
  --dl-sticky: calc(var(--space-8) + var(--space-4));
  --dl-index-w: 64px;
}

/* ---------- 路径 ---------- */
.page-downloads .page-downloads__path {
  padding-top: var(--space-6);
}

/* ---------- 首屏 ---------- */
.page-downloads .dl-hero {
  padding-block: var(--space-6) var(--space-8);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-downloads .dl-hero__title {
  margin: 0;
  color: var(--color-ink);
}

.page-downloads .dl-hero__intro {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* 成组数字 */
.page-downloads .dl-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-figure {
  display: grid;
  gap: var(--space-1);
  padding-bottom: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-figure__num {
  font-family: var(--font-mono);
  color: var(--color-accent);
}

.page-downloads .dl-figure__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-downloads .dl-figure__note {
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* 静态检索示意框 */
.page-downloads .dl-search {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 56px;
  margin-top: var(--space-6);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-downloads .dl-search__caret {
  flex: none;
  width: 2px;
  height: var(--space-3);
  background: var(--color-accent);
}

.page-downloads .dl-search__hint {
  min-width: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-downloads .dl-search__key {
  flex: none;
  margin-left: auto;
  padding: var(--space-1) var(--space-2);
  background: var(--color-highlight);
  color: var(--color-ink);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}

.page-downloads .dl-search__note {
  margin: var(--space-2) 0 0;
  color: var(--color-ink-muted);
}

/* 首屏右侧索引栏 */
.page-downloads .dl-hero__aside {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-surface-alt);
}

.page-downloads .dl-hero__media {
  margin: 0;
}

.page-downloads .dl-typeindex {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-typeindex li {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-typeindex a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-1);
  color: var(--color-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: background-color 150ms ease, color 150ms ease;
}

.page-downloads .dl-typeindex a:hover {
  background: var(--color-primary-soft);
  color: var(--color-accent);
}

.page-downloads .dl-typeindex a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.page-downloads .dl-typeindex__name {
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
}

.page-downloads .dl-typeindex__meta {
  flex: none;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 主体分栏 ---------- */
.page-downloads .dl-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  padding-block: var(--section-y);
}

.page-downloads .dl-main {
  min-width: 0;
}

.page-downloads .dl-section + .dl-section {
  margin-top: var(--section-y);
}

.page-downloads .dl-sechead {
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--space-3);
  margin-bottom: var(--space-6);
}

.page-downloads .dl-sechead .title-l {
  margin: 0;
}

.page-downloads .dl-sechead .annotation {
  margin: var(--space-2) 0 0;
  color: var(--color-ink-muted);
}

/* ---------- 五类资料 ---------- */
.page-downloads .dl-types__media {
  margin: 0 0 var(--space-6);
}

.page-downloads .dl-types {
  display: grid;
  gap: 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-type {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-type__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
}

.page-downloads .dl-type__num {
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.08em;
}

.page-downloads .dl-type__head .title-s {
  margin: 0;
}

.page-downloads .dl-type__desc {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink);
}

.page-downloads .dl-type__meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3) var(--space-4);
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-type__meta > div {
  min-width: 0;
}

.page-downloads .dl-type__meta dt {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.06em;
}

.page-downloads .dl-type__meta dd {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink);
}

/* ---------- 条目清单 ---------- */
.page-downloads .dl-entries {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-entry {
  position: relative;
  display: grid;
  grid-template-columns: var(--dl-index-w) minmax(0, 1fr);
  gap: var(--space-2) var(--space-3);
  padding: var(--space-4) var(--space-2) var(--space-4) var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 150ms ease;
}

.page-downloads .dl-entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--border-thin);
  background: var(--color-line);
  transition: width 150ms ease, background-color 150ms ease;
}

.page-downloads .dl-entry:hover {
  background: var(--color-primary-soft);
}

.page-downloads .dl-entry:hover::before {
  width: calc(var(--border-thin) * 4);
  background: var(--color-accent);
}

.page-downloads .dl-entry:target {
  background: var(--color-highlight);
}

.page-downloads .dl-entry:target::before {
  width: calc(var(--border-thin) * 4);
  background: var(--color-accent);
}

.page-downloads .dl-entry__index {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.06em;
  transition: color 150ms ease, font-size 150ms ease;
}

.page-downloads .dl-entry:hover .dl-entry__index {
  color: var(--color-accent);
  font-size: var(--text-base);
}

.page-downloads .dl-entry__main {
  min-width: 0;
}

.page-downloads .dl-entry__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
}

.page-downloads .dl-entry__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-downloads .dl-entry__fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2) var(--space-4);
  margin: var(--space-3) 0 0;
}

.page-downloads .dl-entry__fields > div {
  min-width: 0;
}

.page-downloads .dl-entry__fields dt {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.06em;
}

.page-downloads .dl-entry__fields dd {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 站内阅读 ---------- */
.page-downloads .dl-readout {
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.page-downloads .dl-readout__num {
  margin: 0;
}

.page-downloads .dl-readout__label {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.75;
}

.page-downloads .dl-readout__zones {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--space-4);
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-downloads .dl-readout__zones li {
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.page-downloads .dl-prose {
  max-width: var(--measure);
}

.page-downloads .dl-prose p {
  margin: 0 0 var(--space-4);
  color: var(--color-ink);
}

.page-downloads .dl-prose p:last-child {
  margin-bottom: 0;
}

.page-downloads .dl-faq {
  margin-top: var(--space-6);
}

.page-downloads .dl-faq__head {
  margin: 0;
}

.page-downloads .collapse__panel p {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

/* ---------- 右侧对照栏 ---------- */
.page-downloads .dl-rail {
  display: grid;
  gap: var(--space-4);
  align-self: start;
}

.page-downloads .dl-rail__card {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-rail__card--alt {
  background: var(--color-surface-deep);
}

.page-downloads .dl-rail__card .title-s {
  margin: 0;
}

.page-downloads .dl-rail__text {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-downloads .dl-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-downloads .dl-rail__list li {
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-downloads .dl-rail__list .mono {
  margin-right: var(--space-2);
  color: var(--color-accent);
  font-size: var(--text-xs);
}

.page-downloads .dl-rail__list--links a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: color 150ms ease, border-color 150ms ease;
}

.page-downloads .dl-rail__list--links a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.page-downloads .dl-rail__list--links a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 文档索引入口 ---------- */
.page-downloads .dl-docs {
  padding-block: var(--section-y);
  background: var(--color-surface-alt);
}

.page-downloads .dl-docs__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: center;
}

.page-downloads .dl-docs__media {
  margin: 0;
}

.page-downloads .dl-docs__text .title-l {
  margin: 0 0 var(--space-4);
}

.page-downloads .dl-docs__lead {
  margin: 0 0 var(--space-4);
  max-width: var(--measure);
  color: var(--color-ink);
}

.page-downloads .dl-docs__points {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-docs__points li {
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-downloads .dl-docs__text .btn {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 相关入口 ---------- */
.page-downloads .dl-related {
  padding-block: var(--section-y);
}

.page-downloads .dl-related__title {
  margin: 0 0 var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-related__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-related__list li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-4) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-related__list a {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  text-decoration: none;
  transition: color 150ms ease;
}

.page-downloads .dl-related__list a:hover {
  color: var(--color-accent);
}

.page-downloads .dl-related__list a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.page-downloads .dl-related__list span {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 图片基础 ---------- */
.page-downloads .media__frame {
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-downloads .media__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-downloads .dl-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-downloads .dl-type__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-downloads .dl-readout__zones {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-downloads .dl-entry__fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-downloads .dl-type {
    grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
    gap: var(--space-3) var(--space-6);
    align-items: start;
  }

  .page-downloads .dl-type__head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .page-downloads .dl-related__list li {
    grid-template-columns: minmax(0, 24ch) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-downloads .dl-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }

  .page-downloads .dl-docs__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: var(--space-8);
  }
}

@media (min-width: 1060px) {
  .page-downloads .dl-body {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: var(--space-8);
  }

  .page-downloads .dl-rail {
    position: sticky;
    top: var(--dl-sticky);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-downloads .dl-typeindex a,
  .page-downloads .dl-entry,
  .page-downloads .dl-entry::before,
  .page-downloads .dl-entry__index,
  .page-downloads .dl-rail__list--links a,
  .page-downloads .dl-related__list a {
    transition: none;
  }
}