.page-products {
  --pr-gap: clamp(18px, 3vw, 34px);
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  padding: 18px 0 4px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--graphite);
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-products .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
}
.page-products .breadcrumb a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-products .pr-hero {
  position: relative;
  padding: clamp(26px, 5vw, 64px) 0 clamp(28px, 4vw, 52px);
  background:
    radial-gradient(118% 138% at 88% -12%, rgba(11, 95, 255, .15), transparent 58%),
    linear-gradient(180deg, var(--paper) 0%, #FBF8F2 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-products .pr-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(11, 95, 255, .09) 1px, transparent 1px),
    linear-gradient(0deg, rgba(11, 95, 255, .07) 1px, transparent 1px);
  background-size: 48px 48px, 48px 48px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .55), transparent 84%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .55), transparent 84%);
  pointer-events: none;
}
.page-products .pr-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1000px;
}
.page-products .pr-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--ink);
  margin: 14px 0 18px;
  max-width: 15ch;
}
.page-products .pr-hero-lede {
  margin: 0;
  font-size: clamp(16px, 1.9vw, 18.5px);
  line-height: 1.85;
  color: var(--graphite);
  max-width: 62ch;
}
.page-products .pr-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 30px;
}
.page-products .pr-hero-facts {
  list-style: none;
  margin: 0;
  padding: 20px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 52px);
  border-top: 1px solid rgba(16, 22, 31, .12);
}
.page-products .pr-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-products .pr-hero-facts .num {
  font-size: clamp(20px, 2.8vw, 28px);
  color: var(--blue);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}
.page-products .pr-hero-facts em {
  font-style: normal;
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--graphite);
}

/* ---------- 通用节头 ---------- */
.page-products .pr-sec-head {
  max-width: 740px;
  margin-bottom: clamp(22px, 3vw, 34px);
}
.page-products .pr-sec-head .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -.008em;
  color: var(--ink);
  margin: 10px 0 12px;
}
.page-products .pr-sec-head .section-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--graphite);
}

/* ---------- 图注 ---------- */
.page-products .pr-figcap {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--graphite);
}
.page-products .pr-figcap-no {
  display: inline-block;
  margin-right: 8px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--blue);
}

/* ---------- 产品线总览 ---------- */
.page-products .pr-lines {
  background: linear-gradient(180deg, #FBF8F2 0%, var(--paper) 100%);
}
.page-products .pr-lines-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
}
.page-products .pr-line-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(228px, 250px);
  gap: 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
  padding-bottom: 14px;
}
.page-products .pr-line-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 18px 16px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  scroll-snap-align: start;
  transition: transform .22s ease-out, box-shadow .22s ease-out, border-color .22s ease-out;
}
.page-products .pr-line-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--blue);
  opacity: .85;
}
.page-products .pr-line-card:hover,
.page-products .pr-line-card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-island);
  border-color: rgba(11, 95, 255, .38);
}
.page-products .pr-line-idx {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--blue);
}
.page-products .pr-line-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.2;
  color: var(--ink);
}
.page-products .pr-line-src {
  margin: 0;
  flex: 1;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--graphite);
}
.page-products .pr-line-spec {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-products .pr-line-spec > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.page-products .pr-line-spec dt {
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--graphite);
  white-space: nowrap;
}
.page-products .pr-line-spec dd {
  margin: 0;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
  text-align: right;
  white-space: nowrap;
}

@media (min-width: 760px) {
  .page-products .pr-line-rail {
    grid-auto-flow: row;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-columns: auto;
    overflow-x: visible;
    padding-bottom: 0;
  }
}
@media (min-width: 1280px) {
  .page-products .pr-line-rail {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .page-products .pr-line-card {
    padding: 18px 14px 16px 18px;
  }
  .page-products .pr-line-card h3 {
    font-size: 19px;
  }
  .page-products .pr-line-spec {
    flex-direction: column;
  }
  .page-products .pr-line-spec > div {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .page-products .pr-line-spec dd {
    text-align: left;
  }
}

/* ---------- 对照工作台 ---------- */
.page-products .pr-workbench {
  background: var(--paper);
}
.page-products .pr-wb {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-island);
  overflow: hidden;
}
.page-products .pr-wb-switch {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px clamp(16px, 2.4vw, 26px);
  background: linear-gradient(180deg, #FFFFFF 0%, #F8F6F1 100%);
  border-bottom: 1px solid var(--line);
}
.page-products .pr-ver-list {
  display: flex;
  gap: 5px;
  padding: 5px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
}
.page-products .pr-ver-btn {
  display: flex;
  align-items: center;
  gap: 9px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  color: var(--graphite);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1;
  transition: background .2s ease-out, color .2s ease-out;
}
.page-products .pr-ver-btn:hover {
  background: rgba(11, 95, 255, .08);
}
.page-products .pr-ver-btn .pr-ver-no {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .02em;
}
.page-products .pr-ver-btn .pr-ver-tag {
  font-size: 12px;
  opacity: .85;
}
.page-products .pr-ver-btn[aria-selected="true"] {
  background: var(--ink);
  color: #FFFFFF;
}
.page-products .pr-ver-btn[aria-selected="true"] .pr-ver-no {
  color: var(--orange);
}
.page-products .pr-ver-btn[aria-selected="true"] .pr-ver-tag {
  opacity: .95;
}
.page-products .pr-wb-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--graphite);
}
.page-products .pr-wb-legend li {
  display: flex;
  align-items: center;
}
.page-products .pr-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 3px;
  margin-right: 6px;
  background: #9AA3B2;
}
.page-products .pr-dot--new { background: var(--orange); }
.page-products .pr-dot--edit { background: var(--teal); }
.page-products .pr-dot--keep { background: #9AA3B2; }

.page-products .pr-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-products .pr-table {
  min-width: 780px;
  width: 100%;
}
.page-products .pr-table thead th {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--graphite);
  background: #F7F5F0;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.page-products .pr-table tbody th,
.page-products .pr-table tbody td {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.page-products .pr-table tbody tr:hover th,
.page-products .pr-table tbody tr:hover td {
  background: #FAFBFF;
}
.page-products .pr-table th:first-child,
.page-products .pr-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  box-shadow: 1px 0 0 var(--line);
}
.page-products .pr-table thead th:first-child {
  z-index: 3;
}
.page-products .pr-row-id {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--blue);
  text-align: left;
}
.page-products .pr-flag {
  display: inline-flex;
  align-items: center;
  padding: 3px 11px;
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.6;
}
.page-products .pr-flag--new {
  background: var(--orange-soft);
  color: var(--orange-deep);
}
.page-products .pr-flag--edit {
  background: rgba(15, 140, 122, .13);
  color: var(--teal);
}
.page-products .pr-flag--keep {
  background: #EDEFF3;
  color: var(--graphite);
}

/* ---------- 差异速查 ---------- */
.page-products .pr-diff {
  background: var(--paper);
}
.page-products .pr-diff-layout {
  display: grid;
  gap: var(--pr-gap);
  align-items: start;
  grid-template-columns: minmax(0, 1fr);
}
.page-products .pr-diff-figure {
  margin: 0;
}
@media (min-width: 920px) {
  .page-products .pr-diff-layout {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  }
  .page-products .pr-diff-figure {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}
.page-products .pr-diff-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-products .pr-diff-list li {
  position: relative;
  padding: 16px 0 16px 16px;
  border-bottom: 1px solid var(--line);
}
.page-products .pr-diff-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 23px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
}
.page-products .pr-diff-line {
  display: block;
  margin-bottom: 5px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--blue);
}
.page-products .pr-diff-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 工况与参数 ---------- */
.page-products .pr-params-layout {
  display: grid;
  gap: var(--pr-gap);
  align-items: start;
  grid-template-columns: minmax(0, 1fr);
}
.page-products .pr-params-figure {
  margin: 0;
}
@media (min-width: 920px) {
  .page-products .pr-params-layout {
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
  }
  .page-products .pr-params-figure {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}
.page-products .pr-param-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 640px) and (max-width: 919px) {
  .page-products .pr-param-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1100px) {
  .page-products .pr-param-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.page-products .pr-param-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}
.page-products .pr-param-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.page-products .pr-param-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.25;
  color: var(--ink);
}
.page-products .pr-param-unit {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--orange-deep);
  background: var(--orange-soft);
  border-radius: var(--radius-pill);
  padding: 2px 9px;
  white-space: nowrap;
}
.page-products .pr-param-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--graphite);
}
.page-products .pr-gauge {
  position: relative;
  height: 22px;
  margin-top: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background:
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 18px),
    linear-gradient(90deg, var(--blue-soft), transparent 80%);
  overflow: hidden;
}
.page-products .pr-gauge::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 58%;
  background: linear-gradient(90deg, rgba(11, 95, 255, .52), rgba(11, 95, 255, .14));
  border-right: 2px solid var(--blue);
}
.page-products .pr-param-card:nth-child(1) .pr-gauge::after { width: 62%; }
.page-products .pr-param-card:nth-child(2) .pr-gauge::after { width: 48%; }
.page-products .pr-param-card:nth-child(3) .pr-gauge::after { width: 74%; }
.page-products .pr-param-card:nth-child(4) .pr-gauge::after { width: 36%; }
.page-products .pr-gauge-cap {
  margin: 0;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--blue-deep);
}

/* ---------- 选型与安装流程 ---------- */
.page-products .pr-install {
  background: linear-gradient(180deg, var(--paper) 0%, #EFEAE0 100%);
}
.page-products .pr-install-layout {
  display: grid;
  gap: var(--pr-gap);
  align-items: start;
  grid-template-columns: minmax(0, 1fr);
}
.page-products .pr-install-figure {
  margin: 0;
}
@media (min-width: 1000px) {
  .page-products .pr-install-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }
  .page-products .pr-install-figure {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}
.page-products .pr-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-products .pr-step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.page-products .pr-step[open] {
  border-color: rgba(11, 95, 255, .32);
}
.page-products .pr-step-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}
.page-products .pr-step-summary::-webkit-details-marker {
  display: none;
}
.page-products .pr-step-no {
  flex: none;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .06em;
  color: #FFFFFF;
  background: var(--blue);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  line-height: 1.3;
}
.page-products .pr-step[open] .pr-step-no {
  background: var(--ink);
  color: var(--orange);
}
.page-products .pr-step-title {
  flex: 1;
  min-width: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.3;
  color: var(--ink);
}
.page-products .pr-step-time {
  flex: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--orange-deep);
  background: var(--orange-soft);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  white-space: nowrap;
}
.page-products .pr-step-body {
  padding: 0 16px 16px 16px;
  border-top: 1px dashed var(--line);
  margin-top: 0;
  padding-top: 14px;
}
.page-products .pr-step-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--graphite);
}

/* ---------- 价格与变更入口 ---------- */
.page-products .pr-tail {
  background: var(--ink);
  color: #E9EDF3;
}
.page-products .pr-tail .eyebrow {
  color: #9FB6E8;
}
.page-products .pr-tail-card {
  display: grid;
  gap: var(--pr-gap);
  padding: clamp(22px, 3.4vw, 40px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 130% at 92% -20%, rgba(11, 95, 255, .38), transparent 62%),
    linear-gradient(150deg, #16202E 0%, #10161F 100%);
  border: 1px solid rgba(255, 255, 255, .09);
  position: relative;
  overflow: hidden;
}
.page-products .pr-tail-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 44px 44px, 44px 44px;
  -webkit-mask-image: linear-gradient(200deg, rgba(0, 0, 0, .9), transparent 78%);
  mask-image: linear-gradient(200deg, rgba(0, 0, 0, .9), transparent 78%);
  pointer-events: none;
}
.page-products .pr-tail-copy {
  position: relative;
  z-index: 1;
  max-width: 60ch;
}
.page-products .pr-tail-copy h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.18;
  color: #FFFFFF;
}
.page-products .pr-tail-copy p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #C6D0DF;
}
.page-products .pr-tail-hint {
  padding-left: 14px;
  border-left: 3px solid var(--orange);
  color: #E9EDF3 !important;
}
.page-products .pr-tail-facts {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 44px);
}
.page-products .pr-tail-facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.page-products .pr-tail-facts .num-accent {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1;
}
.page-products .pr-tail-facts em {
  font-style: normal;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: #9BA9BC;
}
@media (min-width: 960px) {
  .page-products .pr-tail-card {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    align-items: center;
  }
  .page-products .pr-tail-facts {
    flex-direction: column;
    gap: 20px;
  }
}

.page-products .pr-next {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 700px) {
  .page-products .pr-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1100px) {
  .page-products .pr-next {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-products .pr-next a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 15px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, .13);
  background: rgba(255, 255, 255, .04);
  text-decoration: none;
  transition: background .2s ease-out, border-color .2s ease-out, transform .2s ease-out;
}
.page-products .pr-next a:hover,
.page-products .pr-next a:focus-visible {
  background: rgba(11, 95, 255, .18);
  border-color: rgba(11, 95, 255, .55);
  transform: translateY(-2px);
}
.page-products .pr-next-k {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--orange);
}
.page-products .pr-next-v {
  font-size: 14.5px;
  line-height: 1.62;
  color: #E9EDF3;
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 560px) {
  .page-products .pr-hero-actions .btn {
    width: 100%;
    text-align: center;
  }
  .page-products .pr-line-rail {
    grid-auto-columns: minmax(210px, 82vw);
  }
  .page-products .pr-wb-switch {
    align-items: flex-start;
  }
  .page-products .pr-ver-btn {
    padding: 7px 12px;
  }
  .page-products .pr-ver-btn .pr-ver-tag {
    display: none;
  }
  .page-products .pr-step-summary {
    flex-wrap: wrap;
    row-gap: 8px;
  }
  .page-products .pr-step-time {
    margin-left: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pr-line-card,
  .page-products .pr-ver-btn,
  .page-products .pr-next a {
    transition: none;
  }
  .page-products .pr-line-card:hover,
  .page-products .pr-next a:hover {
    transform: none;
  }
}