.page-products {
  --p-gap: clamp(0.9rem, 2vw, 1.6rem);
  --p-edge: clamp(1rem, 2.4vw, 1.75rem);
}

/* ---------- 首屏 ---------- */

.page-products .catalog-hero {
  padding-top: clamp(1.5rem, 4vw, 3.5rem);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

.page-products .catalog-hero__title {
  margin: 0.6rem 0 1.4rem;
  line-height: 1.06;
  letter-spacing: -0.01em;
  max-width: 22ch;
}

.page-products .catalog-hero__split {
  display: grid;
  gap: var(--p-gap);
  align-items: end;
  border-top: 2px solid var(--c-steel);
  padding-top: clamp(1rem, 2.4vw, 1.6rem);
}

.page-products .catalog-hero__lead {
  margin: 0;
  max-width: 46ch;
  color: var(--c-paper);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.8;
}

.page-products .catalog-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  border: 2px solid var(--c-steel);
  background: var(--c-charcoal);
  box-shadow: var(--shadow-soft);
}

.page-products .catalog-fact {
  padding: 0.85rem 0.9rem;
  border-right: 1px solid var(--c-steel);
}

.page-products .catalog-fact:last-child {
  border-right: 0;
}

.page-products .catalog-fact dt {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--c-gray);
  text-transform: uppercase;
}

.page-products .catalog-fact dd {
  margin: 0.35rem 0 0;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  color: var(--c-lime);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* ---------- 通用章节内间距 ---------- */

.page-products .section {
  padding-top: clamp(2rem, 4.5vw, 3.5rem);
}

.page-products .catalog-banner {
  margin: 0 0 clamp(1.4rem, 3vw, 2.2rem);
  border: 2px solid var(--c-steel);
  box-shadow: var(--shadow-hard);
}

.page-products .catalog-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 01 入口矩阵 ---------- */

.page-products .catalog-matrix {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--p-gap);
}

.page-products .catalog-node__link {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  height: 100%;
  padding: clamp(1rem, 2vw, 1.35rem);
  border: 2px solid var(--c-steel);
  background: var(--c-charcoal);
  color: var(--c-paper);
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .catalog-node__link:hover,
.page-products .catalog-node__link:focus-visible {
  border-color: var(--c-lime);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
  outline: none;
}

.page-products .catalog-node__link:focus-visible {
  outline: 2px solid var(--c-signal);
  outline-offset: 3px;
}

.page-products .catalog-node__idx {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--c-gray);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .catalog-node__link:hover .catalog-node__idx,
.page-products .catalog-node__link:focus-visible .catalog-node__idx {
  color: var(--c-lime);
  transform: translateY(-2px);
}

.page-products .catalog-node__title {
  margin: 0;
  font-size: clamp(1.1rem, 1.9vw, 1.35rem);
  font-weight: 700;
  line-height: 1.3;
}

.page-products .catalog-node__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--c-paper-dim);
}

.page-products .catalog-node__who {
  margin-top: auto;
  padding-top: 0.7rem;
  border-top: 1px solid var(--c-steel);
  font-size: 0.8rem;
  color: var(--c-cyan);
  letter-spacing: 0.02em;
}

/* ---------- 02 场景路径 ---------- */

.page-products .catalog-pathmap {
  margin: 0 0 clamp(1.4rem, 3vw, 2rem);
  border-left: 3px solid var(--c-cyan);
}

.page-products .catalog-pathmap img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .catalog-paths {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 2px solid var(--c-steel);
}

.page-products .catalog-path {
  padding: clamp(1rem, 2.2vw, 1.5rem) 0;
  border-bottom: 2px solid var(--c-steel);
  transition: background-color var(--dur) var(--ease);
}

.page-products .catalog-path:hover {
  background: rgba(53, 224, 208, 0.05);
}

.page-products .catalog-path__name {
  margin: 0 0 0.9rem;
  font-size: clamp(1.02rem, 1.7vw, 1.2rem);
  font-weight: 700;
  color: var(--c-paper);
}

.page-products .catalog-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-products .catalog-step {
  display: grid;
  grid-template-columns: 1.9rem 1fr;
  align-items: baseline;
  gap: 0.6rem;
  position: relative;
}

.page-products .catalog-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 0.72rem;
  top: 1.5rem;
  bottom: -0.5rem;
  width: 1px;
  background: var(--c-steel);
}

.page-products .catalog-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.55rem;
  height: 1.55rem;
  border: 1px solid var(--c-lime);
  color: var(--c-lime);
  font-size: 0.72rem;
  line-height: 1;
}

.page-products .catalog-step__body {
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--c-paper-dim);
}

.page-products .catalog-step__body .mono {
  color: var(--c-paper);
}

/* ---------- 03 案例带 ---------- */

.page-products .catalog-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(15rem, 78vw);
  gap: var(--p-gap);
  overflow-x: auto;
  padding: 0.25rem 0 1rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-products .catalog-rail:focus-visible {
  outline: 2px solid var(--c-signal);
  outline-offset: 4px;
}

.page-products .catalog-rail::-webkit-scrollbar {
  height: 6px;
}

.page-products .catalog-rail::-webkit-scrollbar-thumb {
  background: var(--c-steel);
}

.page-products .catalog-case {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  border: 2px solid var(--c-steel);
  background: var(--c-indigo);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .catalog-case:hover,
.page-products .catalog-case:focus-within {
  border-color: var(--c-cyan);
  box-shadow: var(--shadow-hard);
}

.page-products .catalog-case__figure {
  margin: 0;
  border-bottom: 2px solid var(--c-steel);
}

.page-products .catalog-case__figure .figure__media {
  border: 0;
}

.page-products .catalog-case__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .catalog-case__body {
  padding: clamp(0.9rem, 1.8vw, 1.2rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.page-products .catalog-case__idx {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--c-signal);
}

.page-products .catalog-case__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-paper);
}

.page-products .catalog-case__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--c-paper-dim);
}

.page-products .catalog-case__meta {
  margin: auto 0 0;
  padding-top: 0.6rem;
  border-top: 1px solid var(--c-steel);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--c-gray);
}

.page-products .catalog-cases__more {
  margin: clamp(0.6rem, 1.6vw, 1rem) 0 0;
  max-width: 52ch;
  font-size: 0.92rem;
  color: var(--c-paper-dim);
}

/* ---------- 04 新旧对照 ---------- */

.page-products .catalog-mapping {
  display: grid;
  gap: var(--p-gap);
}

.page-products .catalog-mapping__table {
  overflow-x: auto;
  border: 2px solid var(--c-steel);
  background: var(--c-charcoal);
  box-shadow: var(--shadow-hard);
}

.page-products .catalog-mapping__table table {
  width: 100%;
  min-width: 30rem;
  border-collapse: collapse;
}

.page-products .catalog-mapping__table caption {
  text-align: left;
  padding: 0.75rem 0.9rem;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--c-gray);
  border-bottom: 2px solid var(--c-steel);
}

.page-products .catalog-mapping__table th,
.page-products .catalog-mapping__table td {
  padding: 0.7rem 0.9rem;
  text-align: left;
  font-size: 0.88rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--c-steel);
}

.page-products .catalog-mapping__table thead th {
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
  text-transform: uppercase;
  background: var(--c-indigo);
}

.page-products .catalog-mapping__table tbody th {
  font-weight: 500;
  color: var(--c-paper-dim);
}

.page-products .catalog-mapping__table tbody td {
  color: var(--c-paper);
}

.page-products .catalog-mapping__table tbody td.mono {
  color: var(--c-lime);
  width: 5.5rem;
}

.page-products .catalog-mapping__table tbody tr {
  transition: background-color var(--dur) var(--ease);
}

.page-products .catalog-mapping__table tbody tr:hover {
  background: rgba(198, 255, 61, 0.07);
}

.page-products .catalog-mapping__table tbody tr:hover th {
  color: var(--c-lime);
}

.page-products .catalog-mapping__table tbody tr:last-child th,
.page-products .catalog-mapping__table tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .catalog-mapping__aside {
  display: grid;
  gap: var(--p-gap);
}

.page-products .catalog-region {
  margin: 0;
  border: 2px solid var(--c-steel);
}

.page-products .catalog-region img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .catalog-mapping__note {
  margin: 0;
  font-size: 0.92rem;
  color: var(--c-paper-dim);
}

.page-products .catalog-mapping__foot {
  margin: clamp(1.2rem, 2.5vw, 1.8rem) 0 0;
}

/* ---------- 05 两条退路 ---------- */

.page-products .catalog-fallback {
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-products .catalog-exits {
  display: grid;
  gap: var(--p-gap);
}

.page-products .catalog-exit {
  display: flex;
  flex-direction: column;
}

.page-products .catalog-exit .card__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--c-paper-dim);
}

.page-products .catalog-exit__idx {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--c-gray);
  margin-bottom: 0.4rem;
}

.page-products .catalog-exit__act {
  margin: auto 0 0;
  padding: clamp(0.9rem, 1.8vw, 1.2rem) clamp(1rem, 2vw, 1.35rem) 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-products .catalog-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .catalog-rail {
    grid-auto-columns: minmax(16rem, 42vw);
  }

  .page-products .catalog-mapping__aside {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-products .catalog-hero__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .catalog-matrix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .catalog-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.5rem, 4vw, 3.5rem);
  }

  .page-products .catalog-rail {
    grid-auto-columns: minmax(17rem, 26vw);
  }

  .page-products .catalog-mapping {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-products .catalog-mapping__aside {
    grid-template-columns: 1fr;
  }

  .page-products .catalog-exits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1280px) {
  .page-products .catalog-rail {
    grid-auto-columns: minmax(18rem, 22vw);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .catalog-node__link,
  .page-products .catalog-node__idx,
  .page-products .catalog-case,
  .page-products .catalog-path {
    transition: none;
  }

  .page-products .catalog-node__link:hover,
  .page-products .catalog-node__link:focus-visible {
    transform: none;
  }
}