.page-products {
  --row-accent: var(--blue-500);
  --row-soft: rgba(30, 122, 156, 0.08);
  --card-r: 12px;
  display: block;
  padding-bottom: 24px;
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 28px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
.page-products .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease-out, border-color 0.2s ease-out;
}
.page-products .breadcrumbs a:hover {
  color: var(--blue-700);
  border-bottom-color: currentColor;
}
.page-products .breadcrumbs span[aria-hidden] {
  color: var(--line-strong);
}

/* ---------- 通用媒体 ---------- */
.page-products .media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--card-r);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.page-products .media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero {
  padding: 22px 0 0;
}
.page-products .dl-hero-head {
  display: grid;
  gap: 20px;
}
.page-products .dl-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 300;
  letter-spacing: 0.02em;
  font-size: clamp(32px, 6.2vw, 62px);
  line-height: 1.14;
  color: var(--blue-900);
}
.page-products .dl-hero-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}
.page-products .dl-hero-media {
  margin-top: 34px;
}

/* ---------- 端别切换 ---------- */
.page-products .dl-switch {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 38px 0 4px;
}
.page-products .device-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-products .device-btn {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--blue-700);
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: 0.02em;
  padding: 10px 20px;
  border-radius: var(--pill);
  cursor: pointer;
  transition: border-color 0.2s ease-out, color 0.2s ease-out,
    background-color 0.2s ease-out, box-shadow 0.2s ease-out;
}
.page-products .device-btn:hover {
  border-color: var(--blue-500);
  color: var(--blue-900);
}
.page-products .device-btn.is-active {
  background: var(--blue-900);
  border-color: var(--blue-900);
  color: #fff;
  box-shadow: var(--shadow);
}
.page-products .dl-switch-hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 三条服务线 ---------- */
.page-products .dl-line {
  position: relative;
  padding: 52px 0;
  border-top: 1px solid var(--line);
  margin-top: 44px;
}
.page-products .dl-line::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(48px, 16%, 180px);
  height: 2px;
  background: var(--row-accent);
  transition: background-color 0.32s ease-out;
}
.page-products .dl-line--desktop {
  --row-accent: var(--blue-500);
  --row-soft: rgba(30, 122, 156, 0.08);
}
.page-products .dl-line--mobile {
  --row-accent: var(--teal-500);
  --row-soft: rgba(47, 182, 168, 0.1);
}
.page-products .dl-line--screen {
  --row-accent: var(--coral-500);
  --row-soft: rgba(255, 107, 74, 0.08);
}
.page-products .dl-line-inner {
  display: grid;
  gap: 30px;
  align-items: start;
}
.page-products .dl-line-media {
  box-shadow: var(--shadow);
}
.page-products .dl-line-body h2 {
  margin: 6px 0 16px;
}
.page-products .dl-line-body p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}
.page-products .chapter-num {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(52px, 9vw, 92px);
  font-weight: 300;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}
.page-products .chapter-title {
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.32;
  color: var(--blue-900);
}
.page-products .dl-facts {
  list-style: none;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 11px;
}
.page-products .dl-facts li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--blue-700);
}
.page-products .dl-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 13px;
  height: 1px;
  background: var(--row-accent);
}
.page-products .note-col {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: 14px;
}
.page-products .dl-line-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 24px;
}
.page-products .dl-line-actions .btn {
  text-decoration: none;
}

/* ---------- 区间矩阵 ---------- */
.page-products .range-section {
  margin-top: 44px;
  padding: 52px 0;
  border-top: 1px solid var(--line);
  position: relative;
}
.page-products .range-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(48px, 16%, 180px);
  height: 2px;
  background: var(--coral-500);
}
.page-products .section-head {
  display: grid;
  gap: 12px;
  max-width: 720px;
}
.page-products .range-intro {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}
.page-products .range-grid {
  display: grid;
  gap: 18px;
  margin-top: 36px;
}
.page-products .range-grid .card {
  border: 1px solid var(--line);
  border-radius: var(--card-r);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 22px 20px;
  transition: box-shadow 0.2s ease-out, transform 0.2s ease-out,
    border-color 0.2s ease-out;
}
.page-products .range-grid .card:hover {
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
  border-color: var(--line-strong);
}
.page-products .range-grid .card--price {
  border-top: 2px solid var(--coral-500);
}
.page-products .range-grid details.card {
  display: block;
}
.page-products .range-grid .panel-summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 6px;
  outline: none;
}
.page-products .range-grid .panel-summary::-webkit-details-marker {
  display: none;
}
.page-products .range-grid .panel-summary::after {
  content: "展开明细";
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-top: 6px;
  transition: color 0.2s ease-out;
}
.page-products .range-grid details[open] .panel-summary::after {
  content: "收起明细";
  color: var(--coral-deep);
}
.page-products .range-grid .panel-body {
  padding-top: 12px;
  border-top: 1px solid var(--line);
  margin-top: 14px;
}
.page-products .range-grid .panel-body p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--blue-700);
}
.page-products .range-grid .panel-body p:last-child {
  margin-bottom: 0;
}
.page-products .range-tag {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-500);
}
.page-products .range-tag--desktop {
  color: var(--blue-500);
}
.page-products .range-tag--screen {
  color: var(--coral-deep);
}
.page-products .card-price {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.page-products .price-num {
  font-family: var(--font-head);
  font-size: clamp(32px, 5vw, 44px);
  line-height: 1;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--coral-500);
  font-variant-numeric: tabular-nums;
}
.page-products .price-unit {
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--coral-deep);
}
.page-products .range-grid .card-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--blue-900);
}
.page-products .range-foot {
  display: grid;
  gap: 26px;
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px dashed var(--line-strong);
}
.page-products .range-foot-copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--blue-700);
}
.page-products .range-foot-copy p:last-child {
  margin-bottom: 0;
}

/* ---------- 版本 ---------- */
.page-products .version-section {
  margin-top: 44px;
  padding: 52px 0;
  border-top: 1px solid var(--line);
  position: relative;
}
.page-products .version-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(48px, 16%, 180px);
  height: 2px;
  background: var(--teal-500);
}
.page-products .version-list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-products .version-list li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.page-products .version-list li:first-child {
  border-top: 1px solid var(--line);
}
.page-products .version-num {
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--teal-500);
  padding-top: 6px;
  font-variant-numeric: tabular-nums;
}
.page-products .version-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--blue-900);
}
.page-products .version-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--blue-700);
}
.page-products .version-section .note-col {
  margin-top: 24px;
}

/* ---------- 选档 ---------- */
.page-products .choose-section {
  margin-top: 44px;
  padding: 52px 0 72px;
  border-top: 1px solid var(--line);
  position: relative;
}
.page-products .choose-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(48px, 16%, 180px);
  height: 2px;
  background: var(--blue-500);
}
.page-products .choose-grid {
  display: grid;
  gap: 18px;
  margin-top: 32px;
}
.page-products .choose-card {
  border: 1px solid var(--line);
  border-left: 2px solid var(--blue-500);
  border-radius: 6px;
  background: #fff;
  box-shadow: var(--shadow);
  padding: 24px 22px;
  transition: box-shadow 0.2s ease-out, transform 0.2s ease-out,
    border-left-color 0.2s ease-out;
}
.page-products .choose-card:hover {
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}
.page-products .choose-card--screen {
  border-left-color: var(--coral-500);
}
.page-products .choose-card h3 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--blue-900);
}
.page-products .choose-q {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}
.page-products .choose-a {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}
.page-products .choose-foot {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px dashed var(--line-strong);
}
.page-products .choose-foot p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--blue-700);
}
.page-products .choose-foot p:last-child {
  margin-bottom: 0;
}
.page-products .choose-foot a {
  color: var(--blue-500);
  text-decoration: none;
  border-bottom: 1px solid var(--coral-200);
  transition: color 0.2s ease-out, border-color 0.2s ease-out;
}
.page-products .choose-foot a:hover {
  color: var(--coral-deep);
  border-bottom-color: var(--coral-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .range-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .choose-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .version-list li {
    grid-template-columns: 72px 1fr;
    gap: 26px;
  }
}

@media (min-width: 900px) {
  .page-products .dl-hero-head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: end;
  }
  .page-products .dl-switch {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
  .page-products .dl-switch-hint {
    max-width: 420px;
    text-align: right;
  }
  .page-products .dl-line {
    padding: 84px 0;
  }
  .page-products .dl-line-inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 64px;
  }
  .page-products .dl-line--mobile .dl-line-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
  .page-products .dl-line--mobile .dl-line-media {
    order: 2;
  }
  .page-products .dl-line--mobile .dl-line-body {
    order: 1;
  }
  .page-products .dl-line--screen .dl-line-inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }
  .page-products .range-section,
  .page-products .version-section,
  .page-products .choose-section {
    padding-top: 84px;
    padding-bottom: 96px;
  }
  .page-products .range-foot {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
    align-items: center;
  }
  .page-products .choose-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-products .range-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .range-grid .card,
  .page-products .choose-card,
  .page-products .device-btn,
  .page-products .choose-foot a {
    transition: none;
  }
  .page-products .range-grid .card:hover,
  .page-products .choose-card:hover {
    transform: none;
  }
}