.page-products {
  --pd-idx-w: 232px;
  --pd-hover: #EDE6D2;
  --pd-seam: 6px;
  background: var(--paper-50);
}

.page-products section[id],
.page-products article[id] {
  scroll-margin-top: calc(var(--header-h-shrink) + 24px);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  background: var(--paper-50);
  padding-block: clamp(28px, 4vw, 48px) clamp(56px, 8vw, 104px);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink-900);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 72px), 0 100%);
  z-index: 0;
}

.page-products .pd-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
}

.page-products .pd-hero__copy {
  color: var(--paper-50);
  max-width: 62ch;
}

.page-products .pd-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 22px;
}

.page-products .pd-hero .breadcrumb a {
  color: var(--gray-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-products .pd-hero .breadcrumb a:hover,
.page-products .pd-hero .breadcrumb a:focus-visible {
  color: var(--gold-500);
  border-bottom-color: var(--gold-500);
}

.page-products .pd-hero .breadcrumb__sep {
  margin-inline: 8px;
  color: var(--ink-400);
}

.page-products .pd-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.page-products .pd-lede {
  margin: 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--gray-400);
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pd-hero__panel {
  align-self: start;
  border-left: 3px solid var(--gold-500);
  padding: 4px 0 4px 20px;
}

.page-products .pd-hero__panelLabel {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
}

.page-products .pd-hero__facts {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-products .pd-hero__fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid rgba(154, 163, 181, 0.28);
  padding-bottom: 10px;
}

.page-products .pd-hero__fact dt {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gray-400);
}

.page-products .pd-hero__fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--paper-50);
  white-space: nowrap;
}

.page-products .pd-hero__panelNote {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-400);
}

@media (min-width: 900px) {
  .page-products .pd-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 64px;
    align-items: end;
  }
}

/* ---------- 布局：左侧索引 + 右侧堆叠 ---------- */
.page-products .pd-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-block: clamp(28px, 4vw, 52px) clamp(52px, 7vw, 104px);
}

.page-products .pd-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray-600);
}

.page-products .pd-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 10px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .pd-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 16px;
  border-radius: var(--pill);
  border: 1px solid var(--paper-200);
  background: transparent;
  color: var(--ink-900);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-products .pd-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold-700);
}

.page-products .pd-index__link:hover,
.page-products .pd-index__link:focus-visible {
  border-color: var(--gold-700);
  background: var(--paper-200);
  outline: none;
}

@media (min-width: 1000px) {
  .page-products .pd-layout {
    grid-template-columns: var(--pd-idx-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-products .pd-index {
    position: sticky;
    top: calc(var(--header-h-shrink) + 24px);
  }

  .page-products .pd-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .pd-index__link {
    border: none;
    border-left: 2px solid var(--paper-200);
    border-radius: 0;
    padding: 9px 12px;
    width: 100%;
    transition: border-color 320ms var(--ease), color 200ms var(--ease);
  }

  .page-products .pd-index__link:hover,
  .page-products .pd-index__link:focus-visible {
    border-left-color: var(--gold-500);
    background: transparent;
    color: var(--gold-700);
  }
}

/* ---------- 堆叠面板 ---------- */
.page-products .pd-flow {
  display: flex;
  flex-direction: column;
  gap: var(--pd-seam);
  min-width: 0;
}

.page-products .pd-flow > .panel {
  background: var(--paper-50);
  border-radius: var(--radius-panel);
  padding: clamp(24px, 3.2vw, 48px);
  min-width: 0;
}

@media (min-width: 1280px) {
  .page-products .pd-flow > .panel {
    width: calc(100% - 48px);
  }

  .page-products .pd-flow > .panel:nth-child(even) {
    margin-inline-start: 48px;
  }
}

.page-products .pd-flow > .panel::before {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  background: var(--gold-500);
  margin-bottom: 20px;
}

.page-products .section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.page-products .section-number {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1;
  font-weight: 700;
  color: var(--gold-700);
  letter-spacing: -0.02em;
}

.page-products .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink-900);
}

.page-products .pd-text {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--ink-900);
  margin: 0 0 1.2em;
}

.page-products .pd-text a {
  color: var(--teal-700);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-700);
}

.page-products .pd-text a:hover,
.page-products .pd-text a:focus-visible {
  color: var(--gold-700);
  border-bottom-color: var(--gold-700);
}

/* ---------- 01 系列切换 ---------- */
.page-products .pd-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 28px;
}

.page-products .pd-switch__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 22px;
  border-radius: var(--pill);
  border: 1px solid var(--ink-400);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-products .pd-switch__code {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.page-products .pd-switch__btn--h:hover,
.page-products .pd-switch__btn--h:focus-visible {
  background: var(--gold-700);
  border-color: var(--gold-700);
  color: var(--paper-50);
  outline: none;
}

.page-products .pd-switch__btn--c:hover,
.page-products .pd-switch__btn--c:focus-visible {
  background: var(--teal-700);
  border-color: var(--teal-700);
  color: var(--paper-50);
  outline: none;
}

.page-products .pd-switch__btn--u:hover,
.page-products .pd-switch__btn--u:focus-visible {
  background: var(--ink-700);
  border-color: var(--ink-700);
  color: var(--paper-50);
  outline: none;
}

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

@media (min-width: 760px) {
  .page-products .pd-seriesCards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .pd-seriesCard {
  border: 1px solid var(--paper-200);
  border-top: 4px solid var(--ink-400);
  border-radius: var(--radius-card);
  padding: 22px 20px;
  background: var(--paper-50);
}

.page-products .pd-seriesCard--h { border-top-color: var(--gold-500); }
.page-products .pd-seriesCard--c { border-top-color: var(--teal-500); }
.page-products .pd-seriesCard--u { border-top-color: var(--ink-400); }

.page-products .pd-seriesCard__title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-900);
}

.page-products .pd-seriesCard__num {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 42px;
  line-height: 1;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--gold-700);
}

.page-products .pd-seriesCard__num .pd-seriesCard__unit {
  font-size: 14px;
  font-weight: 400;
  margin-left: 4px;
  color: var(--gray-600);
  font-family: var(--font-body);
}

.page-products .pd-seriesCard__facts {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-products .pd-seriesCard__facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gray-600);
  margin-bottom: 2px;
}

.page-products .pd-seriesCard__facts dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-900);
}

/* ---------- 02 参数总表 ---------- */
.page-products .pd-specs__intro {
  margin: 0 0 26px;
}

.page-products .fig-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-products .pd-specs__intro figcaption,
.page-products .pd-replace__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-600);
  max-width: 68ch;
}

.page-products .pd-block {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--gold-500);
}

.page-products .pd-block__head {
  margin-bottom: 20px;
}

.page-products .pd-block__title {
  margin: 0 0 8px;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-products .pd-block__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--gray-600);
}

.page-products .pd-block__body {
  display: grid;
  gap: 24px;
  min-width: 0;
}

.page-products .pd-block__figure {
  margin: 0;
}

.page-products .pd-block__table {
  min-width: 0;
  overflow-x: auto;
}

@media (min-width: 1040px) {
  .page-products .pd-block--media-left .pd-block__body,
  .page-products .pd-block--media-right .pd-block__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 8fr);
    gap: 32px;
    align-items: start;
  }

  .page-products .pd-block--media-right .pd-block__figure {
    order: 2;
  }
}

.page-products .pd-table,
.page-products .pd-repTable {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.page-products .pd-repTable {
  min-width: 660px;
}

.page-products .pd-table caption,
.page-products .pd-repTable caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-600);
  padding-bottom: 10px;
  caption-side: top;
}

.page-products .pd-table th,
.page-products .pd-table td,
.page-products .pd-repTable th,
.page-products .pd-repTable td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--paper-200);
  vertical-align: top;
  line-height: 1.55;
}

.page-products .pd-table thead th,
.page-products .pd-repTable thead th {
  background: var(--ink-900);
  color: var(--paper-50);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  white-space: nowrap;
  border-bottom: 2px solid var(--gold-500);
}

.page-products .pd-table tbody th,
.page-products .pd-repTable tbody th {
  font-weight: 700;
  color: var(--ink-900);
  white-space: nowrap;
}

.page-products .pd-table tbody tr:nth-child(even),
.page-products .pd-repTable tbody tr:nth-child(even) {
  background: var(--paper-200);
}

.page-products .pd-table tbody tr:hover,
.page-products .pd-repTable tbody tr:hover {
  background: var(--pd-hover);
}

.page-products .pd-w {
  color: var(--gold-700);
  font-weight: 700;
  white-space: nowrap;
}

.page-products .pd-w .unit {
  font-size: 12px;
  margin-left: 1px;
}

.page-products .pd-if {
  color: var(--teal-700);
  white-space: nowrap;
}

.page-products .pd-change {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red-500);
  margin-left: 6px;
  vertical-align: middle;
  cursor: help;
}

.page-products .pd-block__foot {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-600);
  max-width: 68ch;
}

.page-products .pd-block__foot a {
  color: var(--gold-700);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-700);
}

.page-products .pd-block__foot a:hover,
.page-products .pd-block__foot a:focus-visible {
  color: var(--teal-700);
  border-bottom-color: var(--teal-700);
}

/* ---------- 03 适配场景 ---------- */
.page-products .pd-sceneGrid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .page-products .pd-sceneGrid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .pd-scene {
  border: 1px solid var(--paper-200);
  border-left: 4px solid var(--ink-400);
  border-radius: var(--radius-card);
  padding: 22px 20px;
}

.page-products .pd-scene--h { border-left-color: var(--gold-500); }
.page-products .pd-scene--c { border-left-color: var(--teal-500); }
.page-products .pd-scene--u { border-left-color: var(--ink-400); }

.page-products .pd-scene__title {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-products .pd-sceneList {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  counter-reset: pd-scene;
}

.page-products .pd-sceneList li {
  counter-increment: pd-scene;
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-900);
}

.page-products .pd-sceneList li::before {
  content: counter(pd-scene, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold-700);
}

.page-products .pd-sceneList strong {
  font-weight: 700;
}

.page-products .pd-scene__limit {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--paper-200);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-600);
}

/* ---------- 04 替代关系 ---------- */
.page-products .pd-replace__figure {
  margin: 0 0 26px;
}

.page-products .pd-repRow--peer { border-left: 4px solid var(--teal-500); }
.page-products .pd-repRow--down { border-left: 4px solid var(--gray-600); }
.page-products .pd-repRow--up { border-left: 4px solid var(--gold-500); }

.page-products .pd-repRow td:last-child {
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.01em;
}

.page-products .pd-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--pill);
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-products .pd-tag--peer {
  background: var(--teal-700);
  color: var(--paper-50);
}

.page-products .pd-tag--down {
  background: var(--gray-600);
  color: var(--paper-50);
}

.page-products .pd-tag--up {
  background: var(--gold-700);
  color: var(--paper-50);
}

/* ---------- 05 目录规模 ---------- */
.page-products .pd-scaleGrid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  margin-bottom: 32px;
}

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

.page-products .pd-scaleCard {
  position: relative;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
  background: var(--ink-900);
  border-radius: var(--radius-card);
  padding: 26px 22px 30px;
}

.page-products .pd-scaleCard .readout__value {
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 6vw, 3.6rem);
  line-height: 1;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--gold-500);
}

.page-products .pd-scaleCard .readout__unit {
  font-size: 14px;
  color: var(--gray-400);
  margin-left: 4px;
}

.page-products .pd-scaleCard .readout__label {
  flex-basis: 100%;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--paper-50);
}

.page-products .pd-scaleCard__tick {
  position: absolute;
  left: 22px;
  bottom: 18px;
  width: 40px;
  height: 1px;
  background: var(--gold-500);
}

.page-products .pd-compare {
  border: 1px solid var(--paper-200);
  border-radius: var(--radius-card);
  padding: 24px 22px;
}

.page-products .pd-compare__title {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-products .pd-compare__list {
  margin: 0 0 22px;
  padding-left: 1.1em;
  display: grid;
  gap: 10px;
  max-width: 68ch;
}

.page-products .pd-compare__list li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-900);
}

/* ---------- 06 变更记录 ---------- */
.page-products .pd-logTypes {
  margin: 0 0 32px;
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .page-products .pd-logTypes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .pd-logType {
  border-top: 1px solid var(--paper-200);
  padding-top: 16px;
}

.page-products .pd-logType dt {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 8px;
}

.page-products .pd-logType dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--gray-600);
}

.page-products .pd-logType__dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red-500);
}

.page-products .pd-logFlow {
  background: var(--paper-200);
  border-radius: var(--radius-card);
  padding: 24px 22px;
  margin-bottom: 28px;
}

.page-products .pd-logFlow__title {
  margin: 0 0 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-products .pd-logFlow__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

@media (min-width: 900px) {
  .page-products .pd-logFlow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }
}

.page-products .pd-logFlow__steps li {
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-900);
}

.page-products .pd-logFlow__no {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--gold-700);
}

.page-products .pd-back {
  margin: 8px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--gold-500);
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray-600);
}

.page-products .pd-back a {
  color: var(--ink-900);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--gold-500);
}

.page-products .pd-back a:hover,
.page-products .pd-back a:focus-visible {
  color: var(--gold-700);
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 560px) {
  .page-products .pd-hero::before {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), 0 100%);
  }

  .page-products .pd-block__title {
    font-size: 1.05rem;
  }

  .page-products .pd-seriesCard__num {
    font-size: 34px;
  }

  .page-products .pd-scaleCard .readout__value {
    font-size: 2.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-switch__btn,
  .page-products .pd-index__link,
  .page-products .pd-table tbody tr,
  .page-products .pd-repTable tbody tr {
    transition-duration: 150ms;
  }
}
</main>