.page-products {
  --prod-line: var(--line-500);
  --prod-soft: rgba(42, 66, 88, 0.55);
  --prod-body: rgba(237, 231, 220, 0.86);
}

.page-products img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-products figure {
  margin: 0;
}

.page-products .section {
  padding-block: clamp(32px, 5vw, 64px);
}

/* ---------- 首屏 ---------- */

.page-products .prod-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-950);
  border-bottom: 1px solid var(--prod-line);
  padding-block: clamp(24px, 4.5vw, 52px) clamp(32px, 5vw, 64px);
}

.page-products .prod-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block: -40%;
  inset-inline-end: 4%;
  width: 34%;
  display: none;
  background: linear-gradient(180deg, rgba(225, 166, 59, 0.16), rgba(200, 74, 53, 0.10) 55%, transparent 100%);
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-products .prod-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: min(52%, 380px);
  height: 3px;
  background: linear-gradient(90deg, var(--amber-450), transparent);
  pointer-events: none;
}

.page-products .prod-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-products .prod-hero .breadcrumb {
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-products .prod-hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(29px, 4.6vw, 50px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--smoke-100);
  margin: 14px 0 16px;
  max-width: 18ch;
}

.page-products .prod-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--prod-body);
}

.page-products .prod-hero__meta {
  margin: 18px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--smoke-400);
}

.page-products .prod-hero__meta .mono {
  color: var(--amber-450);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-products .prod-hero__index {
  border: 1px solid var(--prod-line);
  border-top: 2px solid var(--amber-450);
  background: var(--ink-850);
  padding: clamp(16px, 2.4vw, 24px);
}

.page-products .prod-hero__index-title {
  margin: 0 0 12px;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--smoke-400);
}

.page-products .prod-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-products .prod-legend li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--prod-soft);
  font-size: 14px;
}

.page-products .prod-legend li:last-child {
  border-bottom: none;
}

.page-products .prod-legend__key {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--celadon-400);
}

.page-products .prod-legend__name {
  color: var(--smoke-100);
}

.page-products .prod-legend__n {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--smoke-400);
}

.page-products .prod-hero__index-note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--prod-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--smoke-400);
}

/* ---------- 区块标题 ---------- */

.page-products .prod-head {
  max-width: var(--measure);
  margin-bottom: clamp(22px, 3.5vw, 38px);
}

.page-products .prod-head h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(23px, 3vw, 33px);
  line-height: 1.32;
  color: var(--smoke-100);
  margin: 10px 0 12px;
}

.page-products .prod-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--smoke-400);
}

/* ---------- 分区列表 ---------- */

.page-products .zone-list {
  display: grid;
}

.page-products .zone {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: clamp(12px, 2.4vw, 28px);
  padding-block: clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--prod-line);
}

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

.page-products .zone__key {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-products .zone__letter {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  color: var(--celadon-400);
}

.page-products .zone__count {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--smoke-400);
}

.page-products .zone__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.35;
  color: var(--smoke-100);
  margin: 0 0 8px;
}

.page-products .zone__desc {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--smoke-400);
}

.page-products .zone__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .zone__items li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--prod-soft);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--prod-body);
  transition: background var(--dur) var(--ease), padding-inline-start var(--dur) var(--ease);
}

.page-products .zone__items li:hover {
  background: rgba(225, 166, 59, 0.07);
  padding-inline-start: 6px;
}

.page-products .zone__code {
  flex: 0 0 auto;
  min-width: 3.2em;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--amber-450);
}

.page-products .zone-figure {
  margin-top: clamp(24px, 3.5vw, 40px);
}

/* ---------- 编号规则 ---------- */

.page-products .prod-number {
  background: var(--ink-950);
  border-top: 1px solid var(--prod-line);
}

.page-products .prod-number__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-products .prod-number__text h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(23px, 3vw, 33px);
  line-height: 1.32;
  color: var(--smoke-100);
  margin: 10px 0 14px;
}

.page-products .prod-number__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--smoke-400);
}

.page-products .num-demo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--paper-50);
  border-left: 3px solid var(--cinnabar-500);
}

.page-products .num-demo__chip {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--mono);
  color: var(--ink-950);
  line-height: 1;
}

.page-products .num-demo__letter {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-products .num-demo__digits {
  font-size: 26px;
  font-weight: 400;
  opacity: 0.5;
}

.page-products .num-demo__read {
  margin: 0;
  flex: 1 1 200px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-800);
}

.page-products .prod-number__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .prod-number__list li {
  position: relative;
  padding: 10px 0 10px 18px;
  border-bottom: 1px solid var(--prod-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--prod-body);
}

.page-products .prod-number__list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 19px;
  width: 8px;
  height: 1px;
  background: var(--celadon-400);
}

.page-products .prod-number__figure {
  align-self: center;
}

/* ---------- 玩法升级版 ---------- */

.page-products .prod-upgrade {
  background: var(--ink-950);
  border-top: 1px solid var(--prod-line);
}

.page-products .upgrade {
  border: 1px solid var(--prod-line);
  background: var(--ink-850);
  padding: clamp(16px, 2.6vw, 28px);
}

.page-products .upgrade__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 28px);
  padding-bottom: clamp(14px, 2vw, 20px);
  border-bottom: 1px solid var(--prod-line);
}

.page-products .upgrade__tabs .tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.page-products .tab-btn__idx {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  opacity: 0.75;
}

.page-products .tab-btn__label {
  font-size: 14px;
}

.page-products .upgrade__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-products .upgrade__panel[hidden] {
  display: none;
}

.page-products .diff-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--prod-line);
}

.page-products .diff-list li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--prod-line);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--prod-body);
}

.page-products .diff-list__n {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber-450);
  padding-top: 3px;
}

/* ---------- 三步核对法 ---------- */

.page-products .prod-check {
  background: var(--ink-950);
  border-top: 1px solid var(--prod-line);
}

.page-products .check-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-products .check-flow__item {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--ink-850);
  border: 1px solid var(--prod-line);
  border-top: 2px solid var(--celadon-400);
}

.page-products .check-flow__item:nth-child(2) {
  border-top-color: var(--amber-450);
}

.page-products .check-flow__item:nth-child(3) {
  border-top-color: var(--cinnabar-500);
}

.page-products .check-flow__num {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--smoke-400);
}

.page-products .check-flow__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--smoke-100);
  margin: 8px 0 10px;
}

.page-products .check-flow__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--smoke-400);
}

/* ---------- 适用场景 ---------- */

.page-products .prod-scene {
  background: var(--ink-950);
  border-top: 1px solid var(--prod-line);
}

.page-products .scene-figure {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .scene-grid {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-products .scene {
  padding: 20px;
  background: var(--ink-850);
  border: 1px solid var(--prod-line);
  border-left: 3px solid var(--amber-450);
}

.page-products .scene__tag {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--celadon-400);
}

.page-products .scene h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  color: var(--smoke-100);
  margin: 0 0 8px;
}

.page-products .scene p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--smoke-400);
}

.page-products .scene__tag + h3 {
  margin-top: 0;
}

/* ---------- 版本 ---------- */

.page-products .prod-version {
  background: var(--ink-950);
  border-top: 1px solid var(--prod-line);
}

.page-products .prod-version__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-products .prod-version__grid h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(23px, 3vw, 33px);
  line-height: 1.32;
  color: var(--smoke-100);
  margin: 10px 0 14px;
}

.page-products .prod-version__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--smoke-400);
}

.page-products .prod-version__note {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--smoke-400);
}

.page-products .prod-inline-link {
  color: var(--amber-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(225, 166, 59, 0.5);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .prod-inline-link:hover,
.page-products .prod-inline-link:focus-visible {
  color: var(--amber-450);
  border-color: var(--amber-450);
}

.page-products .fact-list {
  margin: 0;
  display: grid;
  border-top: 1px solid var(--prod-line);
}

.page-products .fact-list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--prod-line);
}

.page-products .fact-list dt {
  margin: 0;
  font-size: 13.5px;
  color: var(--smoke-400);
}

.page-products .fact-list dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--amber-200);
  text-align: right;
}

.page-products .prod-version__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-products .prod-version__hint {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--smoke-400);
}

.page-products .prod-version__hint .mono {
  color: var(--amber-200);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-products .zone__items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(18px, 3vw, 32px);
  }
}

@media (min-width: 760px) {
  .page-products .prod-hero::before {
    display: block;
  }

  .page-products .zone {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .page-products .zone__key {
    position: sticky;
    top: 24px;
    align-self: start;
  }
}

@media (min-width: 900px) {
  .page-products .prod-number__grid,
  .page-products .prod-version__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

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

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

@media (min-width: 960px) {
  .page-products .prod-hero__inner {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.58fr);
  }

  .page-products .zone {
    grid-template-columns: 88px minmax(0, 1fr);
  }
}

@media (min-width: 1000px) {
  .page-products .upgrade__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .zone__items li,
  .page-products .prod-inline-link {
    transition: none;
  }
}
<<<END>>>