.page-products {
  --prod-card: var(--paper-card);
  --prod-line: var(--edge);
  --prod-old-wash: rgba(60, 90, 122, 0.09);
  --prod-new-wash: rgba(182, 64, 46, 0.08);
  color: var(--ink);
}

.page-products .breadcrumb {
  padding-top: clamp(20px, 4vw, 36px);
}

.page-products .breadcrumb__item {
  display: inline-flex;
  align-items: center;
}

.page-products .prod-hero {
  padding: clamp(18px, 3.5vw, 40px) 0 clamp(30px, 5vw, 64px);
  border-bottom: 1px solid var(--prod-line);
}

.page-products .prod-hero .eyebrow {
  margin: 0 0 14px;
}

.page-products .prod-hero h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink-deep);
}

.page-products .prod-hero__lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--stone);
}

/* 章节骨架 */
.page-products .prod-section {
  padding: clamp(40px, 6vw, 88px) 0;
  border-bottom: 1px solid var(--prod-line);
}

.page-products .prod-section:last-of-type {
  border-bottom: 0;
}

.page-products .prod-section__head {
  max-width: 68ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-products .prod-section__head .eyebrow {
  margin: 0 0 10px;
}

.page-products .prod-section__head h2 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.3;
  color: var(--ink-deep);
}

.page-products .prod-section__head p:not(.eyebrow) {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--stone);
}

/* 通用图片 */
.page-products .prod-figure {
  margin: clamp(24px, 4vw, 44px) 0 0;
}

.page-products .prod-figure .figure__frame {
  background: var(--prod-card);
  border: 1px solid var(--prod-line);
  padding: 8px;
}

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

/* 双色版本分区 */
.page-products .versus {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-products .versus__col {
  --col: var(--ink);
  position: relative;
  background: var(--prod-card);
  border: 1px solid var(--prod-line);
  border-top: 6px solid var(--col);
  padding: clamp(20px, 3vw, 34px);
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.page-products .versus__col--old {
  --col: var(--indigo);
}

.page-products .versus__col--new {
  --col: var(--cinnabar);
}

.page-products .versus__col:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-paper);
}

.page-products .versus__mark {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
}

.page-products .versus__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

.page-products .versus__col h3 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: clamp(20px, 2.4vw, 25px);
  line-height: 1.4;
  color: var(--ink-deep);
}

.page-products .versus__body {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .versus__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-products .versus__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-products .versus__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  background: var(--col);
}

.page-products .versus__who {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--prod-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

/* 对照表 */
.page-products .cmp-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.page-products .cmp-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-products .cmp-legend__item::before {
  content: "";
  width: 14px;
  height: 14px;
  border: 1px solid var(--prod-line);
}

.page-products .cmp-legend__item--old::before {
  background: var(--prod-old-wash);
  border-color: var(--indigo);
}

.page-products .cmp-legend__item--new::before {
  background: var(--prod-new-wash);
  border-color: var(--cinnabar);
}

.page-products .compare {
  border: 1px solid var(--prod-line);
  background: var(--prod-card);
}

.page-products .compare__row {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--prod-line);
}

.page-products .compare__row:first-child {
  border-top: 0;
}

.page-products .compare__row--head {
  display: none;
}

.page-products .compare__cell {
  padding: 14px 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-products .compare__cell--label {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink-deep);
  background: rgba(198, 161, 91, 0.12);
  border-bottom: 1px solid var(--prod-line);
}

.page-products .compare__cell--old::before,
.page-products .compare__cell--new::before {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--indigo);
}

.page-products .compare__cell--old::before {
  content: "旧版 V2.X";
}

.page-products .compare__cell--new::before {
  content: "新版 V3.X";
  color: var(--cinnabar);
}

.page-products .compare__cell--new {
  border-top: 1px dashed var(--prod-line);
}

/* 资料库 */
.page-products .library-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-products .lib-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.page-products .lib-stat {
  border: 1px solid var(--prod-line);
  background: var(--prod-card);
  padding: 14px 16px;
}

.page-products .lib-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-deep);
}

.page-products .lib-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--stone);
}

.page-products .lib-flow {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 20px;
}

.page-products .lib-flow__box {
  fill: var(--prod-card);
  stroke: var(--prod-line);
  stroke-width: 1.5;
}

.page-products .lib-flow__box--result {
  fill: var(--prod-new-wash);
  stroke: var(--cinnabar);
}

.page-products .lib-flow__link {
  fill: none;
  stroke: var(--stone);
  stroke-width: 1.5;
}

.page-products .lib-flow__text {
  font-family: var(--font-sans);
  font-size: 15px;
  fill: var(--ink);
}

.page-products .lib-flow__text--result {
  font-family: var(--font-mono);
  font-size: 14px;
  fill: var(--cinnabar);
}

.page-products .lib-points {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-products .lib-points li {
  padding-left: 14px;
  border-left: 2px solid var(--bamboo);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-products .lib-points strong {
  color: var(--ink-deep);
}

.page-products .lib-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.page-products .lib-copy__hint {
  font-size: 13px;
  color: var(--stone);
}

/* 批次卡片墙 */
.page-products .batch-wall {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-products .batch-card {
  background: var(--prod-card);
  border: 1px solid var(--prod-line);
  border-left: 3px solid var(--gold);
  padding: 20px;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.page-products .batch-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-paper);
}

.page-products .batch-card__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink-deep);
}

.page-products .batch-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-title);
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink-deep);
}

.page-products .batch-card p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

/* 设备 */
.page-products .device-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .device-card {
  background: var(--prod-card);
  border: 1px solid var(--prod-line);
  padding: 22px;
}

.page-products .device-card__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--bamboo);
}

.page-products .device-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 21px;
  color: var(--ink-deep);
}

.page-products .device-card p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-products .device-card__meta {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--prod-line);
  font-size: 13px;
  color: var(--stone);
}

.page-products .device-more {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

.page-products .device-detail {
  background: var(--prod-card);
  border: 1px solid var(--prod-line);
}

.page-products .device-detail summary {
  cursor: pointer;
  padding: 16px 18px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink-deep);
  list-style: none;
}

.page-products .device-detail summary::-webkit-details-marker {
  display: none;
}

.page-products .device-detail summary::before {
  content: "+";
  display: inline-block;
  width: 18px;
  font-family: var(--font-mono);
  color: var(--cinnabar);
}

.page-products .device-detail[open] summary::before {
  content: "−";
}

.page-products .device-detail summary:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: -2px;
}

.page-products .device-steps {
  margin: 0;
  padding: 0 18px 18px 40px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .device-steps li {
  margin-bottom: 6px;
}

.page-products .device-detail p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

/* 选择路径 */
.page-products .path-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
}

.page-products .path-card {
  background: var(--prod-card);
  border: 1px solid var(--prod-line);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.page-products .path-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-paper);
}

.page-products .path-card h3 {
  margin: 0;
  font-family: var(--font-title);
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink-deep);
}

.page-products .path-card p:not(.tag) {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .path-card__next {
  font-size: 13.5px;
  color: var(--stone);
}

.page-products .path-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

.page-products .path-card--b {
  border-top: 4px solid var(--cinnabar);
}

.page-products .path-card--a {
  border-top: 4px solid var(--indigo);
}

.page-products .path-card--c {
  border-top: 4px solid var(--bamboo);
}

.page-products .choose-side {
  margin-top: clamp(24px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-products .choose-side .prod-figure {
  margin: 0;
}

.page-products .choose-note {
  background: var(--prod-new-wash);
  border: 1px solid var(--edge);
  border-left: 3px solid var(--cinnabar);
  padding: 22px;
}

.page-products .choose-note h3 {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--ink-deep);
}

.page-products .choose-note p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

/* 收束 */
.page-products .prod-coda {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-products .prod-coda .prod-figure {
  margin: 0;
  order: 2;
}

.page-products .prod-coda__text h2 {
  margin: 0 0 14px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.32;
  color: var(--ink-deep);
}

.page-products .prod-coda__text p {
  margin: 0 0 14px;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--stone);
}

.page-products .prod-coda__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0 0;
}

/* 响应式 */
@media (min-width: 640px) {
  .page-products .lib-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .batch-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .batch-card--offset {
    margin-top: 28px;
  }

  .page-products .batch-wall .batch-card:nth-child(3) {
    margin-top: -12px;
  }
}

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

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

  .page-products .path-card--b {
    padding-bottom: 34px;
  }

  .page-products .choose-side {
    grid-template-columns: 300px minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-products .versus {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-products .compare__row {
    grid-template-columns: 190px minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-products .compare__row--head {
    display: grid;
    background: rgba(198, 161, 91, 0.14);
  }

  .page-products .compare__cell--label {
    border-bottom: 0;
    background: transparent;
    display: flex;
    align-items: center;
  }

  .page-products .compare__cell--new {
    border-top: 0;
  }

  .page-products .compare__cell + .compare__cell {
    border-left: 1px solid var(--prod-line);
  }

  .page-products .compare__cell--old::before,
  .page-products .compare__cell--new::before {
    display: none;
  }

  .page-products .compare__row--head .compare__cell {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-bottom: 2px solid var(--gold);
  }

  .page-products .compare__row--head .compare__cell--old {
    color: var(--indigo);
    background: var(--prod-old-wash);
  }

  .page-products .compare__row--head .compare__cell--new {
    color: var(--cinnabar);
    background: var(--prod-new-wash);
  }

  .page-products .compare__row:not(.compare__row--head) .compare__cell--old {
    background: var(--prod-old-wash);
  }

  .page-products .compare__row:not(.compare__row--head) .compare__cell--new {
    background: var(--prod-new-wash);
  }

  .page-products .compare__row:not(.compare__row--head) {
    transition: background-color 160ms ease;
  }

  .page-products .compare__row:not(.compare__row--head):hover {
    background: rgba(198, 161, 91, 0.16);
  }

  .page-products .library-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .library-grid .prod-figure {
    margin: 0;
  }

  .page-products .prod-coda {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 48px;
  }

  .page-products .prod-coda .prod-figure {
    order: 0;
  }
}

@media (min-width: 1100px) {
  .page-products .prod-hero__lead {
    font-size: 17px;
  }

  .page-products .versus__col {
    padding: 36px 38px;
  }

  .page-products .lib-stats {
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .versus__col,
  .page-products .batch-card,
  .page-products .path-card,
  .page-products .compare__row:not(.compare__row--head) {
    transition: none;
  }

  .page-products .versus__col:hover,
  .page-products .batch-card:hover,
  .page-products .path-card:hover {
    transform: none;
  }
}