.page-products {
  --p-indent: 24px;
  --p-diag: 12deg;
  background: var(--ink-900);
  color: var(--text-primary);
}

/* ---------- 首屏 ---------- */
.page-products .p-hero {
  position: relative;
  padding: 36px 0 52px;
  background:
    repeating-linear-gradient(90deg, rgba(36, 64, 95, .55) 0 1px, transparent 1px 80px),
    linear-gradient(180deg, rgba(12, 36, 64, .82) 0%, var(--ink-900) 68%);
}

.page-products .p-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--line-400) 0 1px, transparent 1px 16px);
  opacity: .8;
}

.page-products .crumb-nav {
  margin-bottom: 30px;
}

.page-products .crumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--f-xs);
  letter-spacing: .06em;
  color: var(--text-muted);
}

.page-products .crumb-list li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--slate-600);
}

.page-products .crumb-list a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-products .crumb-list a:hover,
.page-products .crumb-list a:focus-visible {
  color: var(--gold-400);
  border-bottom-color: var(--gold-600);
}

.page-products .crumb-list [aria-current="page"] {
  color: var(--gold-400);
}

.page-products .hero-collage {
  display: grid;
  gap: 30px;
}

.page-products .hero-main {
  position: relative;
}

.page-products .hero-main .eyebrow {
  margin: 0;
}

.page-products .p-hero h1 {
  margin: 14px 0 20px;
  font-family: var(--sans);
  font-weight: 900;
  font-size: var(--f-3xl);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 14em;
}

.page-products .hero-lede {
  margin: 0;
  max-width: 38em;
  font-size: var(--f-sm);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-products .hero-meta {
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-400);
  font-size: var(--f-2xs);
  letter-spacing: .12em;
  color: var(--gold-400);
}

.page-products .hero-panel {
  position: relative;
  padding: 22px 20px 18px;
  background: rgba(12, 36, 64, .66);
  border: 1px solid var(--line-400);
  border-left: 2px solid var(--vermilion-500);
}

.page-products .hero-panel::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 22px;
  height: 3px;
  background: var(--gold-400);
}

.page-products .panel-label {
  margin: 0 0 14px;
  color: var(--gold-400);
}

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

.page-products .hero-outline li a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line-400);
  color: var(--text-primary);
  text-decoration: none;
  font-size: var(--f-xs);
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-products .hero-outline li:last-child a {
  border-bottom: none;
}

.page-products .hero-outline li a .mono {
  font-size: var(--f-2xs);
  color: var(--gold-400);
  letter-spacing: .1em;
}

.page-products .hero-outline li a:hover,
.page-products .hero-outline li a:focus-visible {
  color: var(--vermilion-500);
  padding-left: 6px;
}

.page-products .hero-outline li a:hover .mono,
.page-products .hero-outline li a:focus-visible .mono {
  color: var(--vermilion-500);
}

.page-products .panel-foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-400);
  font-size: var(--f-2xs);
  letter-spacing: .12em;
  color: var(--text-muted);
}

/* ---------- 通用区块标记 ---------- */
.page-products .p-section {
  position: relative;
  padding: 56px 0;
  border-top: 1px solid var(--line-400);
}

.page-products .section-head {
  margin-bottom: 26px;
}

.page-products .sec-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: var(--f-2xs);
  letter-spacing: .16em;
  color: var(--text-muted);
}

.page-products .sec-mark-num {
  font-size: var(--f-xs);
  letter-spacing: .08em;
  color: var(--gold-400);
}

.page-products .sec-mark-slash {
  display: inline-block;
  width: 3px;
  height: 12px;
  background: var(--vermilion-500);
  transform: skewX(calc(var(--p-diag) * -1));
}

.page-products .p-section h2 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 900;
  font-size: var(--f-xl);
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 20em;
}

.page-products .prose {
  margin: 0 0 16px;
  font-size: var(--f-sm);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-products .prose:last-child {
  margin-bottom: 0;
}

/* ---------- 01 入口层 ---------- */
.page-products .entry-grid {
  display: grid;
  gap: 30px;
}

.page-products .entry-points {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-products .entry-points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  font-size: var(--f-xs);
  line-height: 1.7;
  color: var(--text-primary);
}

.page-products .entry-points .dot {
  width: 7px;
  height: 7px;
  margin-top: 9px;
  background: var(--vermilion-500);
  transform: rotate(45deg);
}

.page-products .entry-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-400);
  background: var(--ink-800);
  aspect-ratio: 4 / 3;
}

.page-products .entry-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .94;
}

/* ---------- 02 标签总表 ---------- */
.page-products .p-tags {
  position: relative;
  overflow: hidden;
  padding: 60px 0 68px;
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-950) 100%);
}

.page-products .tags-backdrop {
  position: absolute;
  inset: 0;
  opacity: .15;
  pointer-events: none;
}

.page-products .tags-backdrop img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .p-tags > .shell {
  position: relative;
  z-index: 1;
}

.page-products .tags-legend {
  margin: 0 0 22px;
  font-size: var(--f-xs);
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 46em;
}

.page-products .tag-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-400);
  border: 1px solid var(--line-400);
}

.page-products .tag-cell {
  background: var(--ink-900);
  transition: background .18s var(--ease);
}

.page-products .tag-cell[open] {
  background: var(--ink-800);
}

.page-products .tag-cell-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-products .tag-cell-head::-webkit-details-marker {
  display: none;
}

.page-products .tag-cell-head::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--gold-400);
  border-bottom: 1px solid var(--gold-400);
  transform: rotate(45deg);
  transition: transform .2s var(--ease);
}

.page-products .tag-cell[open] .tag-cell-head::after {
  transform: rotate(-135deg);
}

.page-products .tag-num {
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--vermilion-500);
}

.page-products .tag-name {
  font-size: var(--f-sm);
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--text-primary);
}

.page-products .tag-count {
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--text-muted);
  border: 1px solid var(--line-400);
  padding: 2px 7px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-products .tag-cell[open] .tag-count,
.page-products .tag-cell[open] .tag-num {
  color: var(--gold-400);
}

.page-products .tag-cell[open] .tag-count {
  border-color: var(--gold-600);
}

.page-products .tag-cell-body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--line-400);
}

.page-products .tag-purpose {
  margin: 14px 0 12px;
  font-size: var(--f-xs);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-products .tag-sub-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-products .tag-sub-list li {
  font-size: var(--f-2xs);
  letter-spacing: .06em;
  color: var(--text-primary);
  background: rgba(74, 95, 120, .22);
  border: 1px solid var(--line-400);
  padding: 4px 9px;
}

/* ---------- 03 内容层 ---------- */
.page-products .layers-top {
  display: grid;
  gap: 30px;
  margin-bottom: 34px;
}

.page-products .drawer-stack {
  border-left: 2px solid var(--vermilion-500);
  padding-left: 16px;
  display: grid;
  gap: 12px;
}

.page-products .drawer {
  position: relative;
  padding: 14px 16px;
  background: var(--ink-800);
  border: 1px solid var(--line-400);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-products .drawer::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 14px;
  height: 2px;
  background: var(--gold-400);
  opacity: .7;
}

.page-products .drawer:hover {
  border-color: var(--slate-600);
  transform: translateX(2px);
}

.page-products .drawer--2 {
  margin-left: 18px;
}

.page-products .drawer--3 {
  margin-left: 36px;
}

.page-products .drawer-key {
  margin: 0 0 6px;
  font-size: var(--f-2xs);
  letter-spacing: .12em;
  color: var(--gold-400);
}

.page-products .drawer-text {
  margin: 0;
  font-size: var(--f-xs);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-products .layers-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-400);
  background: var(--ink-800);
  aspect-ratio: 4 / 3;
}

.page-products .layers-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .content-split {
  display: grid;
  gap: 24px;
}

.page-products .content-card {
  position: relative;
  padding: 22px;
  background: var(--ink-800);
  border: 1px solid var(--line-400);
}

.page-products .content-card h3 {
  margin: 0 0 10px;
  font-family: var(--sans);
  font-weight: 900;
  font-size: var(--f-md);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-products .content-card p {
  margin: 0;
  font-size: var(--f-xs);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-products .card-figure {
  margin: -22px -22px 18px;
  overflow: hidden;
  background: var(--ink-950);
  border-bottom: 1px solid var(--line-400);
}

.page-products .card-figure--wide {
  aspect-ratio: 16 / 9;
}

.page-products .card-figure--lean {
  aspect-ratio: 3 / 2;
}

.page-products .card-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .card-spec {
  margin: 16px 0 0;
  display: grid;
  gap: 8px;
}

.page-products .card-spec div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--line-400);
}

.page-products .card-spec div:last-child {
  border-bottom: none;
}

.page-products .card-spec dt {
  font-size: var(--f-2xs);
  letter-spacing: .1em;
  color: var(--text-muted);
}

.page-products .card-spec dd {
  margin: 0;
  font-size: var(--f-2xs);
  letter-spacing: .06em;
  color: var(--gold-400);
}

/* ---------- 04 版本对照条 ---------- */
.page-products .compare-lede {
  margin: 0 0 22px;
  max-width: 46em;
  font-size: var(--f-xs);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-products .compare-bar {
  border: 1px solid var(--line-400);
  background: var(--ink-800);
}

.page-products .compare-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--line-400);
  background: rgba(5, 19, 31, .5);
}

.page-products .compare-head span {
  padding: 11px 14px;
  font-size: var(--f-2xs);
  letter-spacing: .14em;
  color: var(--text-muted);
}

.page-products .compare-head span:first-child {
  border-right: 1px solid var(--line-400);
}

.page-products .compare-row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--line-400);
  transition: background .18s var(--ease);
}

.page-products .compare-row:last-child {
  border-bottom: none;
}

.page-products .compare-row::after {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 50%;
  width: 2px;
  background: var(--vermilion-500);
  opacity: .55;
  transform: translateX(-50%) skewX(calc(var(--p-diag) * -1));
  pointer-events: none;
  transition: opacity .18s var(--ease);
}

.page-products .compare-cell {
  padding: 15px 14px;
  transition: background .18s var(--ease), color .18s var(--ease);
}

.page-products .compare-cell--old {
  border-right: 1px solid var(--line-400);
}

.page-products .cmp-line {
  margin: 0 0 4px;
  font-size: var(--f-xs);
}

.page-products .cmp-tag {
  color: var(--text-muted);
  letter-spacing: .06em;
  transition: color .18s var(--ease);
}

.page-products .compare-cell--new .cmp-tag {
  color: var(--text-primary);
  font-weight: 500;
}

.page-products .cmp-note {
  margin: 0;
  font-size: var(--f-2xs);
  line-height: 1.6;
  color: var(--slate-600);
  transition: color .18s var(--ease);
}

.page-products .compare-row:hover,
.page-products .compare-row:focus-within {
  background: rgba(255, 106, 43, .08);
}

.page-products .compare-row:hover::after,
.page-products .compare-row:focus-within::after {
  opacity: 1;
}

.page-products .compare-row:hover .cmp-tag,
.page-products .compare-row:focus-within .cmp-tag {
  color: var(--gold-400);
}

.page-products .compare-row:hover .cmp-note,
.page-products .compare-row:focus-within .cmp-note {
  color: var(--text-muted);
}

.page-products .compare-foot {
  margin: 18px 0 0;
  font-size: var(--f-xs);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-products .compare-foot a {
  color: var(--gold-400);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-600);
}

.page-products .compare-foot a:hover,
.page-products .compare-foot a:focus-visible {
  color: var(--vermilion-500);
  border-bottom-color: var(--vermilion-500);
}

/* ---------- 05 术语索引 ---------- */
.page-products .terms-grid {
  display: grid;
  gap: 32px;
}

.page-products .naming-rules {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .naming-rules li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--line-400);
  font-size: var(--f-xs);
  line-height: 1.7;
  color: var(--text-muted);
  transition: border-color .18s var(--ease);
}

.page-products .naming-rules li:hover {
  border-left-color: var(--vermilion-500);
}

.page-products .rule-id {
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--gold-400);
}

.page-products .fold-hint {
  margin: 0 0 10px;
  color: var(--text-muted);
}

.page-products .stroke-group {
  border-bottom: 1px solid var(--line-400);
}

.page-products .stroke-group:first-of-type {
  border-top: 1px solid var(--line-400);
}

.page-products .stroke-group > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-size: var(--f-sm);
  color: var(--text-primary);
  transition: color .18s var(--ease);
}

.page-products .stroke-group > summary::-webkit-details-marker {
  display: none;
}

.page-products .stroke-group > summary::after {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--gold-400);
  border-bottom: 1px solid var(--gold-400);
  transform: rotate(45deg);
  transition: transform .2s var(--ease);
}

.page-products .stroke-group[open] > summary::after {
  transform: rotate(-135deg);
}

.page-products .stroke-group > summary:hover {
  color: var(--gold-400);
}

.page-products .fold-count {
  margin-left: auto;
  margin-right: 12px;
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--text-muted);
}

.page-products .stroke-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .stroke-list li {
  font-size: var(--f-2xs);
  letter-spacing: .06em;
  color: var(--text-muted);
  background: rgba(74, 95, 120, .16);
  border: 1px solid var(--line-400);
  padding: 4px 10px;
}

/* ---------- 收束 ---------- */
.page-products .p-tail {
  padding: 48px 0 64px;
  border-top: 1px solid var(--line-400);
}

.page-products .tail-bar {
  display: grid;
  gap: 22px;
}

.page-products .tail-text {
  margin: 0;
  max-width: 44em;
  font-size: var(--f-xs);
  line-height: 1.75;
  color: var(--text-muted);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .tag-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .drawer--2 {
    margin-left: 24px;
  }

  .page-products .drawer--3 {
    margin-left: 48px;
  }
}

@media (min-width: 900px) {
  .page-products .p-section {
    padding: 76px 0;
  }

  .page-products .hero-collage {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
    align-items: end;
  }

  .page-products .entry-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .entry-figure {
    aspect-ratio: 3 / 4;
  }

  .page-products .layers-top {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .content-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    gap: 32px;
    align-items: start;
  }

  .page-products .terms-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 44px;
  }

  .page-products .tail-bar {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: 44px;
  }
}

@media (min-width: 1120px) {
  .page-products .tag-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}