.page-products {
  --prod-hair: 1px solid rgba(154, 166, 191, .22);
  --prod-edge: 2px solid rgba(154, 166, 191, .28);
  color: var(--fg);
  background: var(--bg);
}

.page-products [id] {
  scroll-margin-top: 104px;
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding: clamp(20px, 4vw, 40px) 0 clamp(34px, 6vw, 68px);
  background:
    linear-gradient(148deg, rgba(61, 123, 255, .16) 0%, rgba(7, 12, 28, 0) 46%),
    linear-gradient(0deg, var(--bg-deep), var(--bg-deep));
}

.page-products .prod-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 18px;
}

.page-products .prod-hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 10px 0 16px;
  max-width: 20ch;
}

.page-products .prod-lede {
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--mist);
  max-width: 62ch;
  margin: 0 0 24px;
}

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

.page-products .prod-jump a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .05em;
  padding: 6px 11px;
  border: 1px solid rgba(154, 166, 191, .34);
  color: var(--accent-2);
  text-decoration: none;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background 180ms var(--ease);
}

.page-products .prod-jump a:hover,
.page-products .prod-jump a:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 106, 26, .1);
}

.page-products .prod-rail {
  border: var(--prod-edge);
  background: var(--bg-alt);
  box-shadow: var(--shadow-hard);
  padding: 18px 18px 8px;
}

.page-products .prod-rail__title {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--graphite);
  margin: 0 0 12px;
}

.page-products .prod-figs {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .prod-fig {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-top: var(--prod-hair);
}

.page-products .prod-fig:first-child {
  border-top: 0;
}

.page-products .prod-fig__label {
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-products .prod-fig__val {
  font-size: var(--fs-16);
  font-variant-numeric: tabular-nums;
  color: var(--orange);
  white-space: nowrap;
}

/* ---------- 结构总览 ---------- */
.page-products .prod-overview-figure {
  margin: 0 0 26px;
}

.page-products .prod-layers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .prod-layer {
  position: relative;
  padding: 24px 20px 20px;
  background: var(--bg-deep);
  border: var(--prod-edge);
  box-shadow: var(--shadow-hard);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-products .prod-layer:hover,
.page-products .prod-layer:focus-within {
  border-color: var(--accent-2);
  transform: translateY(-2px);
}

.page-products .prod-layer__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-40);
  line-height: 1;
  color: var(--accent-3);
  margin-bottom: 14px;
}

.page-products .prod-layer__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--fs-20);
  letter-spacing: .01em;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-products .prod-layer__body {
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
  margin: 0 0 12px;
}

.page-products .prod-layer__note {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--graphite);
  margin: 0;
  padding-top: 12px;
  border-top: var(--prod-hair);
}

.page-products .prod-breathe {
  margin-top: 32px;
  padding-left: 16px;
  border-left: 3px solid var(--orange);
}

.page-products .prod-breathe p {
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
  max-width: 68ch;
  margin: 0;
}

/* ---------- 分区正文 ---------- */
.page-products .prod-split {
  align-items: start;
  gap: 26px;
}

.page-products .prod-copy p {
  font-size: var(--fs-16);
  line-height: 1.82;
  color: var(--mist);
  margin: 0 0 16px;
  max-width: 60ch;
}

.page-products .prod-copy p:last-child {
  margin-bottom: 0;
}

.page-products .prod-spec {
  margin: 30px 0 0;
  border-top: var(--prod-edge);
  border-bottom: var(--prod-edge);
  display: grid;
  grid-template-columns: 1fr;
}

.page-products .prod-spec__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 2px;
  border-top: var(--prod-hair);
}

.page-products .prod-spec__row:first-child {
  border-top: 0;
}

.page-products .prod-spec dt {
  font-size: var(--fs-14);
  color: var(--graphite);
  letter-spacing: .02em;
}

.page-products .prod-spec dd {
  margin: 0;
  font-size: var(--fs-16);
  font-variant-numeric: tabular-nums;
  color: var(--accent-2);
  white-space: nowrap;
}

/* ---------- 对照表 ---------- */
.page-products .prod-table-wrap {
  overflow-x: auto;
  border: var(--prod-edge);
  background: var(--bg-alt);
  box-shadow: var(--shadow-hard);
  -webkit-overflow-scrolling: touch;
}

.page-products .prod-cross {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
}

.page-products .prod-cross__caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--graphite);
  border-bottom: var(--prod-hair);
}

.page-products .prod-cross th {
  text-align: left;
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--paper);
  background: var(--ink-900);
  padding: 12px 16px;
  border-bottom: 2px solid var(--ink-700);
  white-space: nowrap;
}

.page-products .prod-cross td {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
  padding: 14px 16px;
  border-bottom: var(--prod-hair);
  vertical-align: top;
}

.page-products .prod-cross tbody tr:nth-child(odd) {
  background: rgba(22, 38, 79, .5);
}

.page-products .prod-cross tbody tr:hover {
  background: rgba(255, 106, 26, .12);
}

.page-products .prod-cross td.num {
  font-variant-numeric: tabular-nums;
  color: var(--orange);
  font-weight: 700;
  white-space: nowrap;
}

.page-products .prod-cross-figure {
  margin: 26px 0 0;
}

/* ---------- 两端同步 ---------- */
.page-products .prod-sync {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-products .prod-sync__col {
  border: var(--prod-edge);
  background: var(--bg-deep);
  padding: 20px 18px;
  box-shadow: var(--shadow-hard);
}

.page-products .prod-sync__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--paper);
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-3);
}

.page-products .prod-sync__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-sync__list li {
  position: relative;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
  padding: 8px 0 8px 20px;
  border-top: var(--prod-hair);
}

.page-products .prod-sync__list li:first-child {
  border-top: 0;
}

.page-products .prod-sync__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--accent-2);
}

/* ---------- 使用场景 ---------- */
.page-products .prod-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.page-products .prod-scenarios {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .prod-scenario {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px;
  border: var(--prod-edge);
  background: var(--bg-alt);
  box-shadow: var(--shadow-hard);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-products .prod-scenario:hover,
.page-products .prod-scenario:focus-within {
  border-color: var(--accent-2);
  transform: translateY(-2px);
}

.page-products .prod-scenario .tag {
  align-self: flex-start;
}

.page-products .prod-scenario .card-title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--paper);
}

.page-products .prod-scenario p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-products .prod-scene-figure {
  margin: 30px 0 0;
}

/* ---------- 边界 ---------- */
.page-products .prod-limits {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--prod-edge);
}

.page-products .prod-limit {
  padding: 20px 0;
  border-bottom: var(--prod-hair);
}

.page-products .prod-limit__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--accent-2);
  letter-spacing: .02em;
  margin: 0 0 8px;
}

.page-products .prod-limit p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--mist);
  max-width: 64ch;
}

.page-products .prod-close {
  margin: 30px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--orange);
  background: rgba(22, 38, 79, .6);
  font-size: var(--fs-14);
  line-height: 1.82;
  color: var(--mist);
  max-width: 74ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 36px;
    align-items: start;
  }

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

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

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

  .page-products .prod-scenario:nth-child(2),
  .page-products .prod-scenario:nth-child(4) {
    margin-top: 26px;
  }

  .page-products .prod-limits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }

  .page-products .prod-spec {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-products .prod-spec__row:nth-child(2) {
    border-top: 0;
  }
}

@media (min-width: 1040px) {
  .page-products .prod-hero {
    padding-top: 44px;
  }

  .page-products .prod-layers {
    gap: 20px;
  }

  .page-products .prod-limits {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 26px;
  }

  .page-products .prod-limit {
    border-bottom: 0;
    border-top: var(--prod-hair);
  }

  .page-products .prod-limit:first-child {
    border-top: var(--prod-hair);
  }
}
<<<END>>>