.page-products {
  background: var(--cream);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-products .spec-hero {
  background: var(--green-deep);
  color: var(--cream);
  padding-top: calc(var(--header-h) + clamp(30px, 5vw, 64px));
  padding-bottom: clamp(28px, 4.5vw, 52px);
}

.page-products .spec-hero .breadcrumb-link {
  color: rgba(244, 239, 228, 0.72);
  text-decoration: none;
}

.page-products .spec-hero .breadcrumb-link:hover,
.page-products .spec-hero .breadcrumb-link:focus-visible {
  color: var(--cream);
}

.page-products .spec-hero .breadcrumb-item {
  color: rgba(244, 239, 228, 0.58);
}

.page-products .spec-hero .breadcrumb-current {
  color: var(--cream);
}

.page-products .hero-frame {
  margin-top: clamp(20px, 3vw, 34px);
  border: 1px solid rgba(244, 239, 228, 0.3);
  padding: clamp(20px, 3vw, 40px);
  display: grid;
  gap: clamp(24px, 3vw, 44px);
}

.page-products .hero-copy {
  min-width: 0;
}

.page-products .hero-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(244, 239, 228, 0.62);
}

.page-products .hero-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--cream);
  max-width: 19ch;
}

.page-products .hero-lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(244, 239, 228, 0.82);
}

.page-products .hero-actions {
  margin-top: clamp(22px, 3vw, 34px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .btn-paper,
.page-products .btn-wire,
.page-products .btn-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 0;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-products .btn-paper {
  background: var(--cream);
  color: var(--green-deep);
  border: 2px solid var(--cream);
  box-shadow: 4px 4px 0 rgba(244, 239, 228, 0.2);
}

.page-products .btn-paper:hover,
.page-products .btn-paper:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(244, 239, 228, 0.24);
}

.page-products .btn-wire {
  background: transparent;
  color: var(--cream);
  border: 2px solid rgba(244, 239, 228, 0.5);
}

.page-products .btn-wire:hover,
.page-products .btn-wire:focus-visible {
  border-color: var(--cream);
  transform: translate(-2px, -2px);
}

.page-products .hero-rail {
  min-width: 0;
}

.page-products .rail-caption {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(244, 239, 228, 0.62);
}

.page-products .type-rail {
  border-top: 1px solid rgba(244, 239, 228, 0.26);
}

.page-products .rail-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: 15px 2px;
  border-bottom: 1px solid rgba(244, 239, 228, 0.26);
}

.page-products .rail-key {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--cream);
}

.page-products .rail-name {
  font-size: 15px;
  color: rgba(244, 239, 228, 0.86);
}

.page-products .rail-cycle {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--cream);
  white-space: nowrap;
}

.page-products .hero-scale {
  display: block;
  width: 100%;
  height: auto;
  margin-top: clamp(24px, 3.6vw, 44px);
}

/* ---------- 编号章节里的通用小件 ---------- */
.page-products .rail-note {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
}

.page-products .read-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: rs;
}

.page-products .read-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-products .read-steps li::before {
  counter-increment: rs;
  content: counter(rs, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green);
  border-bottom: 2px solid var(--green);
  padding-bottom: 2px;
}

.page-products .scene-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .scene-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-products .scene-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 2px;
  background: var(--green);
}

/* ---------- 01 类型标签页 ---------- */
.page-products .overview-figure {
  margin: 0 0 clamp(28px, 4vw, 44px);
}

.page-products .split {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
}

.page-products .tabs {
  min-width: 0;
}

.page-products .tab-list {
  display: flex;
  flex-wrap: wrap;
  border: 2px solid var(--green-deep);
  background: var(--cream);
}

.page-products .tab {
  flex: 1 1 148px;
  min-height: 48px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--green-deep);
  border: 0;
  border-right: 2px solid var(--green-deep);
  border-radius: 0;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-products .tab:last-child {
  border-right: 0;
}

.page-products .tab[aria-selected="true"] {
  background: var(--green-deep);
  color: var(--cream);
}

.page-products .tab:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 2px;
}

.page-products .tab-key {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-products .tab-panel {
  border: 2px solid var(--green-deep);
  border-top: 0;
  background: var(--cream);
  padding: clamp(18px, 2.6vw, 32px);
}

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

.page-products .panel-label {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  background: var(--green);
  color: var(--cream);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-products .tab-panel > .panel-label:not(:first-child) {
  margin-top: 26px;
}

.page-products .spec-mini {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 24px;
  font-size: 14px;
}

.page-products .spec-mini th,
.page-products .spec-mini td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-products .spec-mini th {
  width: 46%;
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
}

.page-products .misfit {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--clay);
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-products .misfit .tag {
  flex: none;
  margin-top: 2px;
}

/* ---------- 02 并排对照 ---------- */
.page-products .sheet {
  background: var(--paper);
  border: 2px solid var(--green-deep);
  box-shadow: var(--shadow-hard);
  padding: clamp(12px, 2vw, 20px);
  overflow-x: auto;
}

.page-products .pair-table {
  min-width: 660px;
  font-size: 13.5px;
}

.page-products .pair-table th,
.page-products .pair-table td {
  vertical-align: top;
}

.page-products .pair-table th.col-service,
.page-products .pair-table td.col-service {
  border-left: 3px solid var(--green-deep);
}

.page-products .type-key {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  background: var(--green-deep);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-products .pair-foot {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(26px, 3.6vw, 42px);
}

.page-products .pair-foot .figure {
  margin: 0;
}

/* ---------- 03 刻度轴 ---------- */
.page-products .scale-band {
  background: var(--green);
  color: var(--cream);
}

.page-products .scale-band .section-index,
.page-products .handoff-band .section-index {
  color: rgba(244, 239, 228, 0.34);
}

.page-products .scale-band .section-title,
.page-products .handoff-band .section-title {
  color: var(--cream);
}

.page-products .scale-band .section-lede,
.page-products .handoff-band .section-lede {
  color: rgba(244, 239, 228, 0.78);
}

.page-products .scale-svg {
  display: block;
  width: 100%;
  height: auto;
  margin: clamp(20px, 3vw, 34px) 0 clamp(26px, 4vw, 44px);
}

.page-products .node-list {
  border-top: 1px solid rgba(244, 239, 228, 0.3);
}

.page-products .node-list details {
  border-bottom: 1px solid rgba(244, 239, 228, 0.3);
}

.page-products .node-list summary {
  list-style: none;
  cursor: pointer;
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 4px;
  font-size: 15px;
  color: rgba(244, 239, 228, 0.9);
}

.page-products .node-list summary::-webkit-details-marker {
  display: none;
}

.page-products .node-list summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: rgba(244, 239, 228, 0.6);
}

.page-products .node-list details[open] summary::after {
  content: "–";
}

.page-products .node-list summary:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 2px;
}

.page-products .node-mark {
  flex: none;
  min-width: 84px;
  padding: 4px 8px;
  text-align: center;
  background: var(--cream);
  color: var(--green-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.page-products .node-body {
  padding: 0 4px 22px;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 239, 228, 0.8);
}

.page-products .node-body p {
  margin: 0 0 10px;
}

.page-products .node-body p:last-child {
  margin-bottom: 0;
}

.page-products .scale-figures {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-products .scale-figures .figure {
  margin: 0;
}

.page-products .scale-figures .figure-caption {
  color: rgba(244, 239, 228, 0.66);
}

/* ---------- 04 工况修正 ---------- */
.page-products .cond-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--green-deep);
}

.page-products .cond-row {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .cond-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.3;
  color: var(--green-deep);
}

.page-products .cond-rule {
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-products .cond-result {
  font-size: 14px;
  line-height: 1.7;
  font-weight: 600;
  color: var(--green);
}

.page-products .cond-row.is-down .cond-result {
  color: var(--clay);
}

/* ---------- 05 交接路径 ---------- */
.page-products .handoff-band {
  background: var(--green-deep);
  color: var(--cream);
}

.page-products .handoff-figure {
  margin: 0 0 clamp(28px, 4vw, 46px);
}

.page-products .handoff-figure .figure-caption {
  color: rgba(244, 239, 228, 0.66);
}

.page-products .path-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .path-node {
  min-width: 0;
  border: 1px solid rgba(244, 239, 228, 0.3);
  background: rgba(244, 239, 228, 0.04);
  padding: 16px;
}

.page-products .path-no {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 2px solid rgba(244, 239, 228, 0.5);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(244, 239, 228, 0.7);
}

.page-products .path-title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.3;
  color: var(--cream);
}

.page-products .path-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-products .check {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  min-height: 44px;
  padding: 9px 0;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(244, 239, 228, 0.84);
  cursor: pointer;
}

.page-products .check input {
  flex: none;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  accent-color: var(--cream);
  cursor: pointer;
}

/* ---------- 06 误配 ---------- */
.page-products .mis-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--green-deep);
}

.page-products .mis-row {
  display: grid;
  gap: 10px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .mis-no {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--clay);
}

.page-products .mis-pair {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
}

.page-products .mis-effect {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--clay);
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

/* ---------- 收束 ---------- */
.page-products .closing-band {
  background: var(--paper);
  border-top: 2px solid var(--green-deep);
  border-bottom: 2px solid var(--green-deep);
}

.page-products .closing-grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-products .closing-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.24;
  color: var(--green-deep);
}

.page-products .closing-text {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-products .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

.page-products .btn-solid {
  background: var(--green-deep);
  color: var(--cream);
  border: 2px solid var(--green-deep);
  box-shadow: var(--shadow-hard-sm);
}

.page-products .btn-solid:hover,
.page-products .btn-solid:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--green-deep);
}

.page-products .closing-band .btn-wire {
  color: var(--green-deep);
  border-color: var(--green-deep);
}

.page-products .link-inline {
  flex: 1 1 100%;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--green);
  text-decoration: none;
  border-bottom: 2px solid var(--line);
}

.page-products .link-inline:hover,
.page-products .link-inline:focus-visible {
  color: var(--green-deep);
  border-bottom-color: var(--green-deep);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-products .scale-figures {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-products .cond-row {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 10px 24px;
    align-items: start;
  }

  .page-products .cond-result {
    grid-column: 2;
  }

  .page-products .mis-row {
    grid-template-columns: 56px minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-products .hero-frame {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .split {
    grid-template-columns: minmax(0, 236px) minmax(0, 1fr);
    gap: clamp(28px, 3.6vw, 52px);
    align-items: start;
  }

  .page-products .pair-foot {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .closing-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .closing-actions {
    justify-content: flex-end;
  }

  .page-products .link-inline {
    flex: 0 1 auto;
    text-align: right;
  }
}

@media (min-width: 1000px) {
  .page-products .path-tree {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .path-node {
    position: relative;
  }

  .page-products .path-node:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 26px;
    left: 100%;
    width: 16px;
    height: 2px;
    background: rgba(244, 239, 228, 0.42);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .btn-paper,
  .page-products .btn-wire,
  .page-products .btn-solid,
  .page-products .tab {
    transition: none;
  }

  .page-products .btn-paper:hover,
  .page-products .btn-wire:hover,
  .page-products .btn-solid:hover {
    transform: none;
  }
}