.page-products {
  --cat-aside: 236px;
}

/* ---------- 首屏 ---------- */
.page-products .cat-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(36px, 5vw, 64px) clamp(72px, 9vw, 128px);
}

.page-products .cat-hero__wedge {
  position: absolute;
  z-index: -1;
  top: -16%;
  right: -8%;
  width: min(780px, 74vw);
  aspect-ratio: 1 / 1;
  background: linear-gradient(148deg, rgba(108, 75, 255, 0.42) 0%, rgba(34, 211, 238, 0.15) 46%, rgba(6, 11, 26, 0) 72%);
  clip-path: polygon(34% 0%, 100% 0%, 100% 74%, 0% 100%);
  pointer-events: none;
}

.page-products .cat-hero__inner {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-products .cat-hero__kicker {
  color: var(--nebula);
  margin: 0 0 18px;
}

.page-products .cat-hero__title {
  font-size: clamp(36px, 6.2vw, 84px);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
}

.page-products .cat-hero__lead {
  max-width: 58ch;
  margin: 0;
}

.page-products .cat-hero__meta {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .cat-hero__meta a {
  text-decoration: none;
}

.page-products .cat-hero__figure {
  margin: 0;
}

/* ---------- 章节标题组 ---------- */
.page-products .cat-head {
  display: grid;
  gap: 14px;
  max-width: 66ch;
  margin-bottom: clamp(32px, 4.5vw, 56px);
}

.page-products .cat-head h2 {
  margin: 0;
  font-size: clamp(27px, 3.5vw, 44px);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.page-products .cat-head .lead {
  margin: 0;
}

/* ---------- 目录总览：左索引 + 右详情 ---------- */
.page-products .cat-layout {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-products .cat-toc__label {
  margin: 0 0 14px;
  color: var(--fg-muted);
}

.page-products .cat-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-products .cat-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px 8px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--fg-muted);
  font-size: 13.5px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-products .cat-toc__link:hover {
  color: var(--fg);
  border-left-color: var(--nebula);
  background: rgba(108, 75, 255, 0.08);
}

.page-products .cat-toc__link:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 2px;
  border-left-color: var(--nebula);
}

.page-products .cat-toc__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--nebula);
}

.page-products .cat-entry {
  padding-block: clamp(20px, 2.6vw, 30px);
  border-bottom: 1px solid var(--line);
}

.page-products .cat-entry:last-child {
  border-bottom: 0;
}

.page-products .cat-entry__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}

.page-products .cat-entry__num {
  color: var(--nebula);
}

.page-products .cat-entry__name {
  margin: 0;
  font-size: clamp(19px, 2.1vw, 25px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  min-width: 0;
}

.page-products .cat-ver {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--fg-muted);
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-products .cat-entry__head .cat-ver,
.page-products .cat-version-row .cat-ver {
  margin-left: auto;
}

.page-products .cat-entry:hover .cat-ver,
.page-products .cat-version-row:hover .cat-ver {
  color: var(--fg);
  border-color: var(--nebula);
}

.page-products .cat-entry__desc {
  max-width: 62ch;
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--fg-muted);
}

.page-products .cat-entry__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 14px 22px;
  margin: 0;
}

.page-products .cat-fact dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--fg-muted);
  text-transform: uppercase;
}

.page-products .cat-fact dd {
  margin: 5px 0 0;
  font-size: 14.5px;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

/* ---------- 字段与口径 ---------- */
.page-products .cat-field-block {
  display: grid;
  gap: 18px;
  padding-block: clamp(26px, 3.4vw, 42px);
  border-top: 1px solid var(--line);
}

.page-products .cat-field-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .cat-field-block__aside h3 {
  margin: 10px 0 10px;
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 600;
  line-height: 1.3;
}

.page-products .cat-field-block__aside .index-type {
  margin: 0;
  color: var(--nebula);
}

.page-products .cat-field-block__note {
  margin: 0;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fg-muted);
}

.page-products .cat-field-figure {
  margin: 20px 0 0;
  max-width: 560px;
}

/* ---------- 表格 ---------- */
.page-products .cat-table {
  width: 100%;
  font-size: 13.5px;
  line-height: 1.6;
}

.page-products .cat-table th,
.page-products .cat-table td {
  text-align: left;
  padding: 10px 16px 10px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-products .cat-table th {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  white-space: nowrap;
}

.page-products .cat-table td:first-child {
  font-weight: 600;
  white-space: nowrap;
}

.page-products .cat-table tbody tr {
  transition: background-color 0.18s var(--ease);
}

.page-products .cat-table tbody tr:hover {
  background: rgba(108, 75, 255, 0.07);
}

.page-products .cat-table--cadence td:last-child {
  padding-right: 0;
}

/* ---------- 覆盖范围 ---------- */
.page-products .cat-scope {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-products .cat-scope__panel {
  min-width: 0;
}

.page-products .cat-accordion {
  margin-bottom: clamp(24px, 3vw, 36px);
}

.page-products .cat-tree {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-products .cat-tree__item {
  position: relative;
  padding: 10px 0 10px 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.6;
}

.page-products .cat-tree__item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-products .cat-tree__item:first-child::before {
  top: 50%;
}

.page-products .cat-tree__item:last-child::before {
  bottom: 50%;
}

.page-products .cat-tree__item::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 50%;
  width: 16px;
  height: 1px;
  background: var(--line);
}

.page-products .cat-tree__key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  flex: 0 0 auto;
}

.page-products .cat-tree__val {
  font-variant-numeric: tabular-nums;
  color: var(--fg);
}

.page-products .cat-scope__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 18px 24px;
}

.page-products .cat-scope__facts li {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-products .cat-scope__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  color: var(--fg);
}

.page-products .cat-scope__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
}

.page-products .cat-scope__figure {
  margin: 0;
}

/* ---------- 版本与修订 ---------- */
.page-products .cat-version {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-products .cat-version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.page-products .cat-version-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .cat-version-row:first-child {
  border-top: 1px solid var(--line);
}

.page-products .cat-version-row__name {
  flex: 1 1 160px;
  font-size: 14.5px;
  line-height: 1.5;
}

.page-products .cat-version__body p {
  margin: 0 0 1.4em;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-products .cat-version__body a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .cat-version__body a:hover {
  color: var(--nebula);
}

.page-products .cat-version__figure {
  margin: 24px 0 0;
}

/* ---------- 引用规范 ---------- */
.page-products .cat-cite {
  display: grid;
  gap: clamp(20px, 2.6vw, 28px);
}

.page-products .cat-cite__item {
  border-top: 2px solid var(--nebula);
  padding-top: 16px;
  min-width: 0;
}

.page-products .cat-cite__item .index-type {
  margin: 0 0 10px;
  color: var(--nebula);
}

.page-products .cat-cite__item p:not(.index-type) {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fg-muted);
}

.page-products .cat-cite__foot {
  margin: clamp(28px, 4vw, 44px) 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-products .cat-cite__item a,
.page-products .cat-cite__foot a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .cat-cite__item a:hover,
.page-products .cat-cite__foot a:hover {
  color: var(--nebula);
}

/* ---------- 图片响应式 ---------- */
.page-products .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-products .cat-cite {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .cat-field-block {
    grid-template-columns: minmax(0, var(--cat-aside)) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 60px);
  }

  .page-products .cat-scope,
  .page-products .cat-version {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
    column-gap: clamp(36px, 5vw, 72px);
  }
}

@media (min-width: 960px) {
  .page-products .cat-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    column-gap: clamp(32px, 5vw, 72px);
  }
}

@media (min-width: 1024px) {
  .page-products .cat-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    column-gap: clamp(40px, 5vw, 80px);
  }

  .page-products .cat-toc {
    position: sticky;
    top: calc(var(--topbar-h) + 32px);
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .cat-toc__link,
  .page-products .cat-ver,
  .page-products .cat-table tbody tr {
    transition: none;
  }
}