/* ===== 产品序列页 ===== */
.page-products {
  --p-line: 1px solid var(--sand);
  --p-gap: clamp(3rem, 7vw, 6rem);
  --p-radius: 6px;
  overflow-x: clip;
}

/* ---------- 面包屑上下文 ---------- */
.page-products .crumbs-row {
  padding-block: clamp(1.4rem, 4vw, 2.4rem) clamp(.4rem, 1.6vw, .8rem);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding-block: 0 var(--p-gap);
}

.page-products .prod-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.page-products .prod-hero__title {
  margin: .5rem 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 8.4vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -.032em;
  color: var(--ink);
}

.page-products .prod-hero__lead {
  margin: 0 0 1.6rem;
  max-width: 46ch;
  font-size: clamp(1rem, 2.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink);
}

.page-products .prod-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem clamp(1.5rem, 4vw, 2.6rem);
  padding: 1.15rem 0 1.35rem;
  border-top: var(--p-line);
  border-bottom: var(--p-line);
}

.page-products .fact {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  min-width: 0;
}

.page-products .fact__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 5vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--navy);
}

.page-products .fact__label {
  font-size: .82rem;
  letter-spacing: .02em;
  color: var(--steel);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.6rem;
}

/* ---------- 通用图片容器 ---------- */
.page-products .figure {
  margin: 0;
}

.page-products .figure__frame {
  overflow: hidden;
  border-radius: var(--p-radius);
  background: var(--sand);
}

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

.page-products .figure__caption {
  margin-top: .7rem;
  padding-left: .7rem;
  border-left: 2px solid var(--signal);
  font-size: .82rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-products .prod-hero__figure .figure__frame {
  border: var(--p-line);
  box-shadow: 14px 14px 0 var(--sage);
}

/* ---------- 年份刻度轴 ---------- */
.page-products .prod-axis {
  padding-block: 0 var(--p-gap);
}

.page-products .axis-bar {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .6rem;
}

.page-products .axis-bar__item {
  min-width: 0;
}

.page-products .axis-seg {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .25rem;
  padding: 1rem 1.05rem 1.35rem;
  border: var(--p-line);
  border-radius: var(--p-radius);
  background: var(--paper);
  color: inherit;
  text-decoration: none;
  transition: background-color .28s var(--ease), transform .28s var(--ease);
}

.page-products .axis-seg:hover,
.page-products .axis-seg:focus-visible {
  background: var(--sage);
  transform: translateY(-2px);
}

.page-products .axis-seg:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-products .axis-seg__code {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--signal);
}

.page-products .axis-seg__years {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .8rem;
  color: var(--steel);
}

.page-products .axis-seg__count {
  display: block;
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink);
}

.page-products .axis-seg--now {
  background: var(--navy);
  border-color: var(--navy);
}

.page-products .axis-seg--now .axis-seg__years {
  color: var(--signal-mist);
}

.page-products .axis-seg--now .axis-seg__count {
  color: var(--paper);
}

.page-products .axis-seg--now::after {
  content: "";
  position: absolute;
  left: 1.05rem;
  right: 1.05rem;
  bottom: .7rem;
  height: 2px;
  background: var(--signal);
}

.page-products .axis-seg--now:hover,
.page-products .axis-seg--now:focus-visible {
  background: var(--navy-panel);
}

/* ---------- 序列表格 ---------- */
.page-products .prod-table {
  padding-block: 0 var(--p-gap);
}

.page-products .table-scroll {
  margin-top: 1.8rem;
  max-height: 72vh;
  overflow: auto;
  border: var(--p-line);
  border-radius: var(--p-radius);
  background: var(--paper);
  -webkit-overflow-scrolling: touch;
}

.page-products .spec-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: .95rem;
}

.page-products .spec-table th,
.page-products .spec-table td {
  padding: .9rem 1rem;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid var(--sand);
}

.page-products .spec-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--navy);
  color: var(--paper);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .76rem;
  letter-spacing: .08em;
  white-space: nowrap;
}

.page-products .spec-table tbody tr:nth-child(even) {
  background: var(--sage);
}

.page-products .spec-table tbody tr:hover {
  background: var(--signal-mist);
}

.page-products .spec-table .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .88rem;
}

.page-products .spec-table .spec-code {
  font-weight: 700;
  color: var(--navy);
}

.page-products .table-note {
  margin: 1.1rem 0 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-products .table-note a {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .table-note a:hover {
  color: var(--signal);
}

/* ---------- 序列段落 ---------- */
.page-products .series {
  border-top: var(--p-line);
  padding-block: clamp(2.2rem, 6vw, 4rem);
}

.page-products .series__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

.page-products .series__index {
  line-height: 1;
}

.page-products .series__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 12vw, 3.4rem);
  line-height: .84;
  letter-spacing: -.04em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--signal);
}

@supports not (-webkit-text-stroke: 1px #000) {
  .page-products .series__num {
    color: var(--signal);
  }
}

.page-products .series__tag {
  display: inline-block;
  margin: 0 0 .9rem;
  padding: .25rem .7rem;
  border: var(--p-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--steel);
}

.page-products .series__title {
  margin: 0 0 .8rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 5.5vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -.025em;
  color: var(--ink);
}

.page-products .series__lede {
  margin: 0 0 1.2rem;
  max-width: 56ch;
  font-size: clamp(1rem, 2.5vw, 1.05rem);
  line-height: 1.85;
  color: var(--ink);
}

.page-products .series__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
}

.page-products .series__points li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .series__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 9px;
  border: 2px solid var(--signal);
  border-radius: 50%;
}

.page-products .series__figure {
  margin-top: 1.4rem;
}

.page-products .prod-break {
  padding-block: clamp(.8rem, 3vw, 1.8rem);
}

/* ---------- 三步选型法 ---------- */
.page-products .prod-steps {
  padding-block: var(--p-gap);
}

.page-products .prod-steps__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.6rem);
  margin-top: 1.8rem;
}

.page-products .steps-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-products .step {
  padding: 1.15rem 1.2rem 1.25rem 1.4rem;
  background: var(--paper);
  border: var(--p-line);
  border-left: 4px solid var(--signal);
  border-radius: 0 var(--p-radius) var(--p-radius) 0;
}

.page-products .step__num {
  margin: 0 0 .35rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-products .step__title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 3.4vw, 1.4rem);
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-products .step__text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 资料与清单 ---------- */
.page-products .prod-materials {
  background: var(--sage);
  padding-block: clamp(2.6rem, 7vw, 5rem);
}

.page-products .mat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  margin-top: 1.8rem;
}

.page-products .mat-card {
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: clamp(1.3rem, 3.4vw, 1.9rem);
  background: var(--paper);
  border: var(--p-line);
  border-radius: var(--p-radius);
}

.page-products .mat-card__tag {
  align-self: flex-start;
}

.page-products .mat-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 3.6vw, 1.55rem);
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-products .mat-card__text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .mat-card__fields {
  list-style: none;
  margin: .2rem 0 0;
  padding: .9rem 0 0;
  border-top: 1px solid var(--sand);
  display: grid;
  gap: .6rem;
}

.page-products .mat-card__fields li {
  position: relative;
  padding-left: 1.4rem;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-products .mat-card__fields li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--verify);
}

.page-products .mat-card__fields .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--navy);
}

.page-products .mat-strip {
  margin-top: 1.4rem;
  padding: clamp(1.3rem, 3.4vw, 1.9rem);
  background: var(--navy);
  border-radius: var(--p-radius);
  display: grid;
  gap: 1rem;
}

.page-products .mat-strip__text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--paper);
}

.page-products .mat-strip__text a {
  color: var(--signal-mist);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .mat-strip__text a:hover {
  color: var(--signal);
}

.page-products .mat-strip__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

/* ---------- 收尾行动区 ---------- */
.page-products .prod-cta {
  padding-block: var(--p-gap);
}

.page-products .prod-cta__inner {
  display: grid;
  gap: .9rem;
  padding-top: clamp(1.8rem, 5vw, 3rem);
  border-top: var(--p-line);
}

.page-products .prod-cta__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-products .prod-cta__title {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 5.4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -.028em;
  color: var(--ink);
}

.page-products .prod-cta__text {
  margin: 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: .5rem;
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-products .axis-bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .8rem;
  }

  .page-products .mat-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.4rem;
  }

  .page-products .mat-strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.8rem;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-products .prod-hero__figure {
    margin-top: .8rem;
  }

  .page-products .series__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: clamp(1.6rem, 4vw, 3rem);
    align-items: start;
  }

  .page-products .series__main {
    grid-column: 1;
    grid-row: 1;
  }

  .page-products .series__index {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
  }

  .page-products .series__num {
    font-size: clamp(4.5rem, 9vw, 7.5rem);
    -webkit-text-stroke-width: 2px;
  }

  .page-products .series__body--s4 > .series__banner {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .page-products .series__body--s4 > .series__index {
    grid-column: 2;
    grid-row: 2;
  }

  .page-products .series__body--s4 > .series__main {
    grid-column: 1;
    grid-row: 2;
  }

  .page-products .prod-steps__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .prod-break {
    margin-left: -2.5%;
    margin-right: 5%;
  }

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

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .axis-seg {
    transition: none;
  }

  .page-products .axis-seg:hover,
  .page-products .axis-seg:focus-visible {
    transform: none;
  }
}