.page-products {
  --prod-panel: rgba(6, 16, 31, 0.62);
  --prod-panel-soft: rgba(10, 26, 47, 0.55);
  --prod-hair: rgba(184, 134, 59, 0.28);
  --prod-hair-soft: rgba(232, 228, 220, 0.12);
  --prod-ink: #0A1A2F;
}

/* ---------- 封面首屏 ---------- */

.page-products .prod-masthead {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(115% 90% at 88% -10%, rgba(46, 42, 74, 0.9), transparent 60%),
    linear-gradient(158deg, var(--ink-900) 0%, var(--ink-800) 56%, var(--teal) 100%);
}

.page-products .prod-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(184, 134, 59, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(184, 134, 59, 0.07) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
}

.page-products .prod-masthead-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding: clamp(26px, 4vw, 52px) 0 clamp(30px, 4vw, 60px);
}

.page-products .prod-eyebrow {
  margin-top: 18px;
}

.page-products .prod-title {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--warm);
  max-width: 18em;
}

.page-products .prod-lede {
  margin-top: 18px;
  max-width: 44em;
}

.page-products .prod-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .prod-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--prod-hair);
  border: 1px solid var(--line);
}

.page-products .prod-metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: rgba(6, 16, 31, 0.88);
}

.page-products .prod-metric-num {
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--brass-2);
  letter-spacing: -0.02em;
}

.page-products .prod-metric-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- 主体骨架 ---------- */

.page-products .prod-layout {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  padding: clamp(26px, 4vw, 52px) 0 clamp(44px, 6vw, 84px);
}

.page-products .prod-index {
  border: 1px solid var(--line);
  background: var(--prod-panel);
}

.page-products .prod-index-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--prod-hair);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--brass-2);
}

.page-products .prod-index-head .mono {
  color: var(--grey);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-products .prod-index-list {
  list-style: none;
  margin: 0;
  padding: 6px 0;
}

.page-products .prod-index-item + .prod-index-item {
  border-top: 1px solid var(--prod-hair-soft);
}

.page-products .prod-index-link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 14px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--text);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background var(--speed) ease, border-color var(--speed) ease, color var(--speed) ease;
}

.page-products .prod-index-link .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--brass);
}

.page-products .prod-index-link:hover,
.page-products .prod-index-link:focus-visible {
  background: rgba(184, 134, 59, 0.1);
  border-left-color: var(--brass-2);
  color: var(--paper);
}

.page-products .prod-index-foot {
  margin: 0;
  padding: 12px 14px;
  border-top: 1px solid var(--prod-hair);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-products .prod-index-foot .mono {
  color: var(--brass-2);
}

.page-products .prod-stream {
  min-width: 0;
}

/* ---------- 章节 ---------- */

.page-products .prod-section {
  padding-top: clamp(28px, 4vw, 46px);
  margin-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--prod-hair-soft);
  scroll-margin-top: calc(var(--header-h) + 22px);
}

.page-products .prod-section:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-products .prod-section-head {
  max-width: 62em;
}

.page-products .prod-section-title {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.28;
  color: var(--warm);
  letter-spacing: -0.005em;
}

.page-products .prod-section-lede {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-products .prod-section--teal {
  padding: clamp(22px, 3.4vw, 34px) clamp(16px, 2.6vw, 30px) clamp(24px, 3.4vw, 36px);
  border-top: 1px solid var(--prod-hair);
  background:
    linear-gradient(180deg, rgba(18, 60, 70, 0.9), rgba(10, 26, 47, 0.86));
}

.page-products .prod-section--indigo {
  padding: clamp(22px, 3.4vw, 34px) clamp(16px, 2.6vw, 30px) clamp(24px, 3.4vw, 36px);
  border-top: 1px solid var(--prod-hair);
  background:
    linear-gradient(180deg, rgba(46, 42, 74, 0.92), rgba(10, 26, 47, 0.88));
}

.page-products .prod-section--paper {
  padding: clamp(22px, 3.4vw, 34px) clamp(16px, 2.6vw, 30px) clamp(24px, 3.4vw, 36px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--paper), var(--warm));
}

.page-products .prod-section--paper .prod-section-title {
  color: var(--prod-ink);
}

.page-products .prod-section--paper .prod-section-lede {
  color: rgba(10, 26, 47, 0.76);
}

/* ---------- 图片 ---------- */

.page-products .prod-media-specs,
.page-products .prod-media-scenes,
.page-products .prod-media-delivery,
.page-products .prod-media-versions {
  margin: clamp(20px, 3vw, 30px) 0 0;
  border: 1px solid var(--prod-hair);
}

.page-products .prod-media-certs {
  margin: 0;
  border: 1px solid rgba(184, 134, 59, 0.4);
}

.page-products .prod-media-specs img,
.page-products .prod-media-scenes img,
.page-products .prod-media-delivery img,
.page-products .prod-media-versions img,
.page-products .prod-media-certs img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 参数分组 ---------- */

.page-products .prod-groups {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .spec-group {
  border: 1px solid var(--prod-hair);
  background: var(--prod-panel-soft);
}

.page-products .spec-group + .spec-group {
  margin-top: 12px;
}

.page-products .spec-group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  transition: background var(--speed) ease;
}

.page-products .spec-group-head::-webkit-details-marker {
  display: none;
}

.page-products .spec-group-head:hover {
  background: rgba(184, 134, 59, 0.09);
}

.page-products .spec-group-head::after {
  content: "";
  width: 8px;
  height: 8px;
  margin-left: auto;
  border-right: 1.5px solid var(--brass-2);
  border-bottom: 1.5px solid var(--brass-2);
  transform: rotate(45deg);
  transition: transform var(--speed) ease;
}

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

.page-products .spec-group-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  border: 1px solid var(--brass);
  font-size: 12px;
  font-weight: 700;
  color: var(--brass-2);
}

.page-products .spec-group-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--warm);
}

.page-products .spec-group-count {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.page-products .spec-group .table-scroll {
  border-top: 1px solid var(--prod-hair-soft);
}

.page-products .ver-table {
  background: rgba(6, 16, 31, 0.34);
}

.page-products .prod-ver-scroll {
  margin-top: clamp(20px, 3vw, 30px);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-note {
  margin-top: 18px;
}

/* ---------- 九类场景 ---------- */

.page-products .prod-scene-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--prod-hair-soft);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-scene {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 15px;
  background: rgba(6, 16, 31, 0.42);
  transition: background var(--speed) ease;
}

.page-products .prod-scene:hover {
  background: rgba(184, 134, 59, 0.09);
}

.page-products .prod-scene-code {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass);
}

.page-products .prod-scene-name {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--warm);
}

.page-products .prod-scene-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 交付方式 ---------- */

.page-products .prod-delivery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .prod-delivery-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px;
  border: 1px solid rgba(184, 134, 59, 0.36);
  border-top: 3px solid var(--brass);
  background: rgba(6, 16, 31, 0.56);
}

.page-products .prod-delivery-tag {
  align-self: flex-start;
  padding: 3px 9px;
  border: 1px solid var(--brass);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--brass-2);
}

.page-products .prod-delivery-name {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  color: var(--warm);
}

.page-products .prod-delivery-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-products .prod-delivery-list {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--prod-hair-soft);
}

.page-products .prod-delivery-list li {
  padding: 8px 0 0 14px;
  position: relative;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-products .prod-delivery-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 1px;
  background: var(--brass);
}

/* ---------- 电脑端选型四维 ---------- */

.page-products .prod-dims {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--prod-hair-soft);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-dim {
  padding: 20px 18px;
  background: rgba(6, 16, 31, 0.42);
}

.page-products .prod-dim-index {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass);
}

.page-products .prod-dim-name {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  color: var(--warm);
}

.page-products .prod-dim-text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text);
}

.page-products .prod-dim-hint {
  margin: 12px 0 0;
  padding: 9px 11px;
  border-left: 2px solid var(--brass);
  background: rgba(184, 134, 59, 0.09);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 四类认证编号 ---------- */

.page-products .prod-cert-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.6vw, 26px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .prod-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(184, 134, 59, 0.34);
  border: 1px solid rgba(184, 134, 59, 0.34);
}

.page-products .prod-cert-card {
  padding: 18px 16px;
  background: var(--paper);
}

.page-products .prod-cert-code {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
}

.page-products .prod-cert-name {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  color: var(--prod-ink);
}

.page-products .prod-cert-text {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(10, 26, 47, 0.76);
}

/* ---------- 流程 ---------- */

.page-products .prod-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--prod-hair-soft);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-flow-step {
  position: relative;
  padding: 18px 16px 18px 18px;
  background: rgba(6, 16, 31, 0.42);
  border-left: 2px solid transparent;
  transition: border-color var(--speed) ease, background var(--speed) ease;
}

.page-products .prod-flow-step:hover {
  border-left-color: var(--brass-2);
  background: rgba(184, 134, 59, 0.08);
}

.page-products .prod-flow-num {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--brass-2);
}

.page-products .prod-flow-name {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--warm);
}

.page-products .prod-flow-text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--text-dim);
}

/* ---------- 收口 CTA ---------- */

.page-products .prod-cta {
  display: grid;
  gap: 18px;
  margin-top: clamp(24px, 3.6vw, 36px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--brass);
  background:
    linear-gradient(135deg, rgba(46, 42, 74, 0.9), rgba(10, 26, 47, 0.92) 60%, rgba(18, 60, 70, 0.9));
}

.page-products .prod-cta-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1.35;
  color: var(--warm);
}

.page-products .prod-cta-lede {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
  max-width: 40em;
}

.page-products .prod-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: center;
}

.page-products .prod-crosslinks {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--prod-hair-soft);
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-products .prod-crosslinks a {
  color: var(--brass-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 166, 92, 0.4);
}

.page-products .prod-crosslinks a:hover,
.page-products .prod-crosslinks a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 平板 ---------- */

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

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

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

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

  .page-products .prod-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 桌面：左侧固定索引 + 右侧参数流 ---------- */

@media (min-width: 1024px) {
  .page-products .prod-masthead-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
    align-items: end;
  }

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

  .page-products .prod-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 3.4vw, 52px);
  }

  .page-products .prod-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

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

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

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

  .page-products .prod-cert-layout {
    grid-template-columns: minmax(280px, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }

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

@media (min-width: 1240px) {
  .page-products .prod-layout {
    grid-template-columns: 260px minmax(0, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-index-link,
  .page-products .spec-group-head,
  .page-products .spec-group-head::after,
  .page-products .prod-scene,
  .page-products .prod-flow-step {
    transition: none;
  }
}
<<<END>>>