.page-products {
  --prod-gap: clamp(16px, 2.4vw, 28px);
  --prod-line-soft: rgba(143, 163, 184, .26);
  --prod-ink-text: #2c4058;
  background: var(--paper);
  color: var(--ink-800);
  overflow-x: hidden;
}

/* ---------- Hero ---------- */
.page-products .prod-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--paper);
  padding-block: clamp(26px, 5vw, 54px) clamp(40px, 7vw, 92px);
}

.page-products .prod-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-products .prod-hero__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.65) contrast(1.05);
}

.page-products .prod-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(115deg, rgba(8, 19, 31, .96) 42%, rgba(8, 19, 31, .58) 78%, rgba(18, 49, 74, .5) 100%);
  pointer-events: none;
}

.page-products .prod-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 60px);
}

.page-products .prod-hero .breadcrumb__link,
.page-products .prod-hero .breadcrumb__current,
.page-products .prod-hero .breadcrumb__sep {
  color: rgba(246, 241, 231, .68);
}

.page-products .prod-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-products .prod-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.2;
  letter-spacing: .01em;
  margin: .34em 0 .5em;
  text-wrap: balance;
}

.page-products .prod-hero .lede {
  max-width: 40ch;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.82;
  color: rgba(246, 241, 231, .8);
  margin: 0 0 clamp(22px, 3.4vw, 34px);
}

.page-products .prod-hero__wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-content: start;
  padding-top: 4px;
}

.page-products .prod-code {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 11px;
  border: 1px solid rgba(192, 138, 78, .42);
  border-radius: var(--radius-sm);
  background: rgba(11, 27, 43, .62);
  min-height: 58px;
}

.page-products .prod-code:nth-child(3n + 2) {
  transform: translateY(12px);
}

.page-products .prod-code__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper-soft);
}

.page-products .prod-code__name {
  font-size: 12.5px;
  line-height: 1.4;
  color: rgba(246, 241, 231, .84);
}

@media (min-width: 640px) {
  .page-products .prod-hero__wall {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-products .prod-code:nth-child(3n + 2) {
    transform: none;
  }

  .page-products .prod-code:nth-child(4n + 2),
  .page-products .prod-code:nth-child(4n + 3) {
    transform: translateY(14px);
  }
}

@media (min-width: 960px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
  }

  .page-products .prod-hero__wall {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-products .prod-code:nth-child(4n + 2),
  .page-products .prod-code:nth-child(4n + 3) {
    transform: none;
  }

  .page-products .prod-code:nth-child(3n + 2) {
    transform: translateY(18px);
  }

  .page-products .prod-code {
    padding: 13px 14px;
    min-height: 68px;
  }

  .page-products .prod-code__no {
    font-size: 13px;
  }

  .page-products .prod-code__name {
    font-size: 13.5px;
  }
}

/* ---------- 三层结构 ---------- */
.page-products .prod-structure {
  background: var(--ink-800);
  color: var(--paper);
}

.page-products .prod-structure__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4.6vw, 56px);
}

.page-products .prod-structure__head h2,
.page-products .prod-states__head h2,
.page-products .prod-path__head h2,
.page-products .prod-ios__copy h2,
.page-products .prod-code__copy h2,
.page-products .prod-history__copy h2,
.page-products .prod-cta__copy h2,
.page-products .prod-cats__head h2 {
  font-family: var(--font-head);
  font-size: clamp(25px, 3.6vw, 36px);
  line-height: 1.26;
  margin: .3em 0 .55em;
  text-wrap: balance;
}

.page-products .prod-structure__text {
  margin: 0;
  max-width: 44ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(246, 241, 231, .74);
}

.page-products .prod-structure__media {
  margin: clamp(22px, 3vw, 34px) 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-products .prod-structure__media img,
.page-products .prod-states__media img,
.page-products .prod-ios__media img,
.page-products .prod-history__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .prod-layers {
  list-style: none;
  margin: 0;
  padding: 0;
  align-self: start;
}

.page-products .prod-layer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: clamp(18px, 3vw, 28px) 0;
  border-top: 1px solid var(--prod-line-soft);
}

.page-products .prod-layer:last-child {
  border-bottom: 1px solid var(--prod-line-soft);
}

.page-products .prod-layer__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--copper-soft);
  padding-top: 5px;
}

.page-products .prod-layer h3 {
  font-family: var(--font-head);
  font-size: clamp(19px, 2.4vw, 22px);
  margin: 0 0 .4em;
  line-height: 1.35;
}

.page-products .prod-layer p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(246, 241, 231, .7);
}

@media (min-width: 960px) {
  .page-products .prod-structure__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ---------- 分类速查 ---------- */
.page-products .prod-cats {
  background: var(--paper);
}

.page-products .prod-cats__head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-products .prod-cats__head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--prod-ink-text);
}

.page-products .prod-cats__rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(228px, 76%);
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 14px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-products .prod-cat {
  scroll-snap-align: start;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 16px 18px;
  background: var(--paper-dim);
  border: 1px solid rgba(215, 222, 229, .95);
  border-radius: var(--radius-sm);
}

.page-products .prod-cat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16px;
  width: 34px;
  height: 2px;
  background: var(--copper);
}

.page-products .prod-cat__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.page-products .prod-cat__name {
  font-family: var(--font-head);
  font-size: 19px;
  margin: 2px 0 0;
  color: var(--ink-800);
}

.page-products .prod-cat__meta {
  margin: 0;
  display: grid;
  gap: 6px;
  font-size: 13px;
  line-height: 1.6;
}

.page-products .prod-cat__meta div {
  display: grid;
  grid-template-columns: 3em minmax(0, 1fr);
  gap: 8px;
}

.page-products .prod-cat__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--copper);
  padding-top: 2px;
}

.page-products .prod-cat__meta dd {
  margin: 0;
  color: var(--prod-ink-text);
}

.page-products .prod-cats__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper-ink);
}

@media (min-width: 720px) {
  .page-products .prod-cats__rail {
    grid-auto-flow: row;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
    padding-bottom: 0;
  }
}

@media (min-width: 1060px) {
  .page-products .prod-cats__rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .prod-cat {
    padding: 22px 18px 20px;
  }
}

/* ---------- 状态与条目卡 ---------- */
.page-products .prod-states {
  background: var(--ink-900);
  color: var(--paper);
}

.page-products .prod-states__head {
  max-width: 58ch;
  margin-bottom: clamp(22px, 3.2vw, 36px);
}

.page-products .prod-states__head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(246, 241, 231, .74);
}

.page-products .prod-legend {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-products .prod-legend__item {
  padding: 20px 18px;
  border: 1px solid var(--prod-line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 49, 74, .55);
}

.page-products .prod-legend__swatch {
  display: block;
  width: 34px;
  height: 6px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.page-products .prod-legend__swatch--updated {
  background: var(--celadon);
  box-shadow: 0 0 10px rgba(111, 191, 162, .5);
}

.page-products .prod-legend__swatch--review {
  background: var(--copper);
}

.page-products .prod-legend__swatch--archived {
  background: var(--slate);
}

.page-products .prod-legend__item h3 {
  font-family: var(--font-head);
  font-size: 18px;
  margin: 0 0 .45em;
}

.page-products .prod-legend__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(246, 241, 231, .72);
}

.page-products .prod-states__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 44px);
  align-items: start;
}

.page-products .prod-states__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-products .prod-entries {
  display: grid;
  gap: 12px;
}

.page-products .prod-entry {
  background: var(--paper);
  color: var(--ink-800);
  border: 1px solid rgba(215, 222, 229, .8);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-products .prod-entry__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-products .prod-entry__summary::-webkit-details-marker {
  display: none;
}

.page-products .prod-entry__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--copper);
  line-height: 1;
}

.page-products .prod-entry[open] .prod-entry__summary::after {
  content: "–";
}

.page-products .prod-entry__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--copper);
}

.page-products .prod-entry__title {
  flex: 1 1 11ch;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.5;
}

.page-products .prod-entry__body {
  padding: 0 16px 18px;
  border-top: 1px dashed var(--line);
}

.page-products .prod-entry__body p {
  margin: 14px 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--prod-ink-text);
}

.page-products .prod-entry__facts {
  margin: 0;
  display: grid;
  gap: 8px;
  font-size: 13px;
}

.page-products .prod-entry__facts div {
  display: grid;
  grid-template-columns: 5.5em minmax(0, 1fr);
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(215, 222, 229, .8);
}

.page-products .prod-entry__facts dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--paper-ink);
}

.page-products .prod-entry__facts dd {
  margin: 0;
  color: var(--prod-ink-text);
}

@media (min-width: 720px) {
  .page-products .prod-legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 980px) {
  .page-products .prod-states__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
  }

  .page-products .prod-states__media {
    position: sticky;
    top: 96px;
  }
}

/* ---------- 三步定位 ---------- */
.page-products .prod-path {
  background: var(--paper);
}

.page-products .prod-path__head {
  max-width: 58ch;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-products .prod-path__head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--prod-ink-text);
}

.page-products .prod-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  counter-reset: step;
}

.page-products .prod-step {
  padding: 22px 20px 24px;
  background: var(--paper-dim);
  border: 1px solid rgba(215, 222, 229, .95);
  border-radius: var(--radius-sm);
}

.page-products .prod-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  color: var(--copper);
  opacity: .55;
  margin-bottom: 14px;
}

.page-products .prod-step h3 {
  font-family: var(--font-head);
  font-size: 19px;
  margin: 0 0 .5em;
  color: var(--ink-800);
}

.page-products .prod-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--prod-ink-text);
}

@media (min-width: 820px) {
  .page-products .prod-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

/* ---------- iOS 阅读 ---------- */
.page-products .prod-ios {
  background: var(--ink-700);
  color: var(--paper);
}

.page-products .prod-ios__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-products .prod-ios__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-products .prod-ios__copy p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(246, 241, 231, .76);
}

.page-products .prod-ios__list {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .prod-ios__list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(246, 241, 231, .8);
}

.page-products .prod-ios__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--celadon);
  box-shadow: 0 0 0 3px rgba(111, 191, 162, .16);
}

.page-products .prod-ios__list strong {
  color: var(--paper);
  font-weight: 600;
}

@media (min-width: 900px) {
  .page-products .prod-ios__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

/* ---------- 编号规则 ---------- */
.page-products .prod-code__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-products .prod-code__copy p {
  margin: 0 0 4px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--prod-ink-text);
  max-width: 46ch;
}

.page-products .prod-code__copy .btn-row {
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-products .prod-code__panel {
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-800);
  color: var(--paper);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--copper);
}

.page-products .prod-code__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--copper-soft);
}

.page-products .prod-code__fmt {
  margin: 0 0 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.6vw, 36px);
  letter-spacing: .02em;
  line-height: 1.2;
  word-break: break-word;
}

.page-products .prod-code__seg--brand {
  color: var(--paper);
}

.page-products .prod-code__seg--cat {
  color: var(--copper-soft);
}

.page-products .prod-code__seg--no {
  color: var(--celadon);
}

.page-products .prod-code__sep {
  color: rgba(246, 241, 231, .4);
}

.page-products .prod-code__legend {
  margin: 0 0 16px;
  display: grid;
  gap: 9px;
  font-size: 13.5px;
}

.page-products .prod-code__legend div {
  display: grid;
  grid-template-columns: 4.5em minmax(0, 1fr);
  gap: 12px;
  padding-top: 9px;
  border-top: 1px solid var(--prod-line-soft);
}

.page-products .prod-code__legend dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--copper-soft);
}

.page-products .prod-code__legend dd {
  margin: 0;
  color: rgba(246, 241, 231, .74);
  line-height: 1.6;
}

.page-products .prod-code__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(246, 241, 231, .6);
}

@media (min-width: 940px) {
  .page-products .prod-code__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
  }
}

/* ---------- 版本与回访 ---------- */
.page-products .prod-history {
  background: var(--ink-800);
  color: var(--paper);
}

.page-products .prod-history__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-products .prod-history__copy p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(246, 241, 231, .74);
}

.page-products .prod-history__steps {
  list-style: none;
  margin: clamp(18px, 2.8vw, 26px) 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: hstep;
}

.page-products .prod-history__steps li {
  position: relative;
  padding-left: 30px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(246, 241, 231, .78);
  counter-increment: hstep;
}

.page-products .prod-history__steps li::before {
  content: counter(hstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .12em;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--copper-soft);
}

.page-products .prod-history__side {
  display: grid;
  gap: clamp(22px, 3vw, 30px);
}

.page-products .prod-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 2px solid var(--copper);
  display: grid;
  gap: 20px;
}

.page-products .prod-timeline li {
  position: relative;
}

.page-products .prod-timeline li::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--celadon);
  box-shadow: 0 0 0 4px rgba(111, 191, 162, .16);
}

.page-products .prod-timeline__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--copper-soft);
}

.page-products .prod-timeline li h3 {
  font-family: var(--font-head);
  font-size: 17px;
  margin: 6px 0 .4em;
  line-height: 1.4;
}

.page-products .prod-timeline li p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(246, 241, 231, .68);
}

.page-products .prod-history__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (min-width: 920px) {
  .page-products .prod-history__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }
}

/* ---------- 收尾 ---------- */
.page-products .prod-cta {
  background: var(--ink-900);
  color: var(--paper);
  border-top: 1px solid rgba(192, 138, 78, .34);
}

.page-products .prod-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: center;
  padding-block: clamp(30px, 5vw, 52px);
}

.page-products .prod-cta__copy p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(246, 241, 231, .76);
}

.page-products .prod-cta__copy h2 {
  margin-bottom: .4em;
}

.page-products .prod-cta__actions {
  justify-content: flex-start;
}

@media (min-width: 860px) {
  .page-products .prod-cta__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-products .prod-cta__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-code,
  .page-products .prod-cat,
  .page-products .prod-legend__swatch {
    transition: none;
    transform: none;
  }
}
<<<END>>>