.page-products {
  --prod-card-bg: rgba(18, 42, 87, .58);
  --prod-gap: clamp(20px, 3vw, 36px);
  --prod-radius: 0px;
  background:
    radial-gradient(1200px 620px at 84% -12%, rgba(0, 229, 255, .10), transparent 62%),
    radial-gradient(900px 520px at 4% 34%, rgba(255, 107, 26, .07), transparent 64%),
    var(--c-deep);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding-block: clamp(36px, 6vw, 78px) clamp(28px, 4vw, 48px);
}

.page-products .prod-hero__title {
  font-size: clamp(2.1rem, 6.2vw, 4.25rem);
  line-height: 1.06;
  letter-spacing: -.035em;
  font-weight: 900;
  max-width: 17em;
  margin: 10px 0 20px;
  transform: skewX(-1.6deg);
  transform-origin: left bottom;
  color: var(--c-ice);
}

.page-products .prod-hero__lede {
  max-width: 40em;
  color: var(--c-mist);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .prod-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line-cyan);
  padding-top: 22px;
}

.page-products .prod-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-products .prod-hero__facts b {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.125rem);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
}

.page-products .prod-hero__facts span {
  font-size: var(--step-xs);
  letter-spacing: .08em;
  color: var(--c-mist);
}

/* ---------- 联赛标签带 ---------- */
.page-products .prod-rail-band {
  border-top: 2px solid var(--line-cyan);
  border-bottom: 2px solid var(--line-cyan);
  background: linear-gradient(180deg, rgba(7, 23, 51, .94), rgba(18, 42, 87, .72));
}

.page-products .prod-rail {
  display: flex;
  gap: 10px;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 14px var(--gutter) 16px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-products .prod-rail::-webkit-scrollbar {
  height: 4px;
}

.page-products .prod-rail::-webkit-scrollbar-thumb {
  background: var(--line-cyan);
}

.page-products .prod-rail__item {
  flex: 0 0 auto;
  scroll-snap-align: center;
  padding: 9px 18px;
  border: 2px solid var(--line-cyan);
  color: var(--c-ice);
  font-family: var(--font-mono);
  font-size: var(--step-xs);
  letter-spacing: .1em;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 160ms var(--ease), background-color 160ms var(--ease),
    color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-products .prod-rail__item:hover,
.page-products .prod-rail__item:focus-visible {
  transform: scale(1.06);
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-night);
  outline: none;
}

/* ---------- 通用小标题 ---------- */
.page-products .prod-head {
  max-width: 52em;
  margin-bottom: var(--prod-gap);
}

.page-products .prod-head__title {
  font-size: clamp(1.5rem, 3.6vw, 2.25rem);
  line-height: 1.18;
  letter-spacing: -.02em;
  font-weight: 800;
  margin: 8px 0 14px;
  color: var(--c-ice);
  max-width: 22em;
}

.page-products .prod-head .lede {
  color: var(--c-mist);
  max-width: 40em;
}

.page-products .prod-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

/* ---------- 四个板块 ---------- */
.page-products .prod-blocks__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .block-card {
  --shift: 0px;
  --lift: 0px;
  position: relative;
  border: 2px solid var(--line-cyan);
  background: var(--prod-card-bg);
  padding: 22px 20px 24px;
  transform: translateY(calc(var(--shift) + var(--lift)));
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease),
    border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-products .block-card:hover {
  --lift: -4px;
  border-color: var(--c-cyan);
  box-shadow: 8px 8px 0 rgba(0, 229, 255, .22);
}

.page-products .block-card__no {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .18em;
  color: var(--c-orange);
  margin-bottom: 12px;
}

.page-products .block-card__title {
  font-size: var(--step-h3);
  font-weight: 800;
  letter-spacing: -.01em;
  margin: 0 0 10px;
  color: var(--c-ice);
}

.page-products .block-card p {
  margin: 0;
  font-size: var(--step-sm);
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 数据面板 ---------- */
.page-products .panel-demo {
  position: relative;
}

.page-products .panel-demo__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .panel-demo__switch {
  display: inline-flex;
  flex-wrap: wrap;
  border: 2px solid var(--line-cyan);
  margin-bottom: 24px;
}

.page-products .panel-demo__tab {
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: var(--step-xs);
  letter-spacing: .08em;
  color: var(--c-mist);
  cursor: pointer;
  transition: background-color 140ms var(--ease), color 140ms var(--ease);
}

.page-products .panel-demo__tab + .panel-demo__tab {
  border-left: 2px solid var(--line-cyan);
}

.page-products .panel-demo__tab:hover {
  color: var(--c-ice);
}

.page-products #view-card:checked ~ .panel-demo__switch label[for="view-card"],
.page-products #view-table:checked ~ .panel-demo__switch label[for="view-table"] {
  background: var(--c-orange);
  color: var(--c-night);
}

.page-products .panel-view {
  display: none;
}

.page-products #view-card:checked ~ .panel-demo__stage .panel-view--card,
.page-products #view-table:checked ~ .panel-demo__stage .panel-view--table {
  display: block;
}

.page-products .glass-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .glass-card {
  border: 2px solid var(--line-cyan);
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-hard);
  padding: 18px 18px 20px;
}

.page-products .glass-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.page-products .glass-card__clock {
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .12em;
  color: var(--c-mist);
  font-variant-numeric: tabular-nums;
}

.page-products .glass-card__score {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 4.4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--c-ice);
  font-variant-numeric: tabular-nums;
}

.page-products .glass-card__meta {
  margin: 0;
  font-size: var(--step-xs);
  letter-spacing: .04em;
  color: var(--c-mist);
}

.page-products .panel-demo__note {
  margin: 16px 0 0;
  font-size: var(--step-xs);
  letter-spacing: .03em;
  color: var(--c-mist);
}

.page-products .table-scroll {
  overflow-x: auto;
  border: 2px solid var(--line-cyan);
  background: rgba(7, 23, 51, .55);
  -webkit-overflow-scrolling: touch;
}

.page-products .panel-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: var(--step-sm);
}

.page-products .panel-table thead th {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .12em;
  font-weight: 500;
  color: var(--c-orange);
  border-bottom: 2px solid var(--c-orange);
  white-space: nowrap;
}

.page-products .panel-table tbody td {
  padding: 12px 16px;
  color: var(--c-ice);
  border-bottom: 1px solid var(--line-soft);
}

.page-products .panel-table tbody tr:nth-child(even) {
  background: rgba(0, 229, 255, .045);
}

.page-products .panel-table tbody tr:hover {
  background: rgba(0, 229, 255, .1);
}

.page-products .panel-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .06em;
  color: var(--c-cyan-soft);
  white-space: nowrap;
}

.page-products .prod-figure--panel img {
  width: 100%;
  object-fit: cover;
}

/* ---------- 检索与索引 ---------- */
.page-products .prod-search__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-products .query-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  border-top: 2px solid var(--line-cyan);
}

.page-products .query-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "key name"
    "key val";
  gap: 2px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .query-list__key {
  grid-area: key;
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .14em;
  color: var(--c-orange);
  padding-top: 4px;
}

.page-products .query-list b {
  grid-area: name;
  font-size: var(--step-body);
  font-weight: 700;
  color: var(--c-ice);
}

.page-products .query-list__val {
  grid-area: val;
  font-size: var(--step-sm);
  color: var(--c-mist);
  line-height: 1.7;
}

.page-products .letter-fold {
  border: 2px solid var(--line-cyan);
  background: var(--prod-card-bg);
}

.page-products .letter-fold details + details {
  border-top: 1px solid var(--line-soft);
}

.page-products .letter-fold summary {
  cursor: pointer;
  padding: 13px 16px;
  font-family: var(--font-mono);
  font-size: var(--step-xs);
  letter-spacing: .16em;
  color: var(--c-cyan-soft);
  list-style: none;
}

.page-products .letter-fold summary::-webkit-details-marker {
  display: none;
}

.page-products .letter-fold summary::after {
  content: "+";
  float: right;
  color: var(--c-orange);
}

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

.page-products .letter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0 16px 16px;
}

.page-products .letter-grid li {
  display: grid;
  place-items: center;
  height: 40px;
  border: 1px solid var(--line-cyan);
  font-family: var(--font-mono);
  font-size: var(--step-xs);
  letter-spacing: .1em;
  color: var(--c-ice);
  transition: background-color 140ms var(--ease), color 140ms var(--ease),
    border-color 140ms var(--ease);
}

.page-products .letter-grid li:hover {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-night);
}

.page-products .prod-search__link {
  margin: 22px 0 0;
  font-size: var(--step-sm);
  color: var(--c-mist);
}

.page-products .prod-search__link a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 专家专栏 ---------- */
.page-products .prod-column__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-products .prod-column__lanes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .lane-card {
  border-left: 4px solid var(--c-orange);
  background: rgba(18, 42, 87, .45);
  padding: 18px 18px 20px;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-products .lane-card:hover {
  border-left-color: var(--c-cyan);
  background: rgba(18, 42, 87, .72);
}

.page-products .lane-card__title {
  font-size: var(--step-h3);
  font-weight: 800;
  margin: 0 0 8px;
  color: var(--c-ice);
}

.page-products .lane-card p {
  margin: 0;
  font-size: var(--step-sm);
  line-height: 1.75;
  color: var(--c-mist);
}

.page-products .prod-column .prod-figure {
  margin-top: 0;
}

/* ---------- 条目与收藏（左右长文 + 吸附数字列） ---------- */
.page-products .prod-flow__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-products .prod-head--inline {
  margin-bottom: 24px;
}

.page-products .prod-index {
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line-cyan);
}

.page-products .prod-index .list-index__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .prod-index .list-index__title {
  color: var(--c-ice);
  font-size: var(--step-sm);
  line-height: 1.6;
  text-decoration: none;
  transition: color 140ms var(--ease);
}

.page-products .prod-index .list-index__title:hover {
  color: var(--c-cyan);
}

.page-products .prod-index .list-index__date {
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .08em;
  color: var(--c-orange);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.page-products .prod-flow__subtitle {
  font-size: var(--step-h2);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -.02em;
  margin: 0 0 14px;
  color: var(--c-ice);
}

.page-products .prod-flow__main .measure,
.page-products .prod-flow__main p {
  color: var(--c-mist);
}

.page-products .prod-flow__main .measure {
  font-size: var(--step-body);
  line-height: 1.8;
}

.page-products .prod-figure--flow {
  margin-top: 30px;
}

.page-products .prod-stats {
  border: 2px solid var(--line-cyan);
  background: rgba(7, 23, 51, .72);
  padding: 22px 20px 24px;
  box-shadow: var(--shadow-hard);
}

.page-products .prod-stats__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .2em;
  color: var(--c-cyan);
}

.page-products .prod-stats__list {
  margin: 0 0 20px;
  padding: 0;
}

.page-products .prod-stats__list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .prod-stats__list dt {
  font-size: var(--step-xs);
  color: var(--c-mist);
  letter-spacing: .03em;
}

.page-products .prod-stats__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-body);
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--c-ice);
  font-variant-numeric: tabular-nums;
}

.page-products .prod-stats__list dd span {
  font-size: var(--step-mono);
  color: var(--c-mist);
  margin-left: 3px;
}

.page-products .prod-stats__fav {
  width: 100%;
  padding: 11px 16px;
  border: 2px solid var(--c-orange);
  background: transparent;
  color: var(--c-orange);
  font-family: var(--font-mono);
  font-size: var(--step-xs);
  letter-spacing: .12em;
  cursor: pointer;
  transition: background-color 140ms var(--ease), color 140ms var(--ease);
}

.page-products .prod-stats__fav:hover,
.page-products .prod-stats__fav[aria-pressed="true"] {
  background: var(--c-orange);
  color: var(--c-night);
}

/* ---------- 适配场景 ---------- */
.page-products .prod-scene__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .scene-card {
  border: 2px solid var(--line-cyan);
  background: rgba(18, 42, 87, .38);
  padding: 24px 20px 22px;
  display: flex;
  flex-direction: column;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease),
    box-shadow 160ms var(--ease);
}

.page-products .scene-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-cyan);
  box-shadow: 8px 8px 0 rgba(0, 229, 255, .2);
}

.page-products .scene-card--accent {
  background: linear-gradient(160deg, rgba(255, 107, 26, .16), rgba(18, 42, 87, .5));
  border-color: rgba(255, 107, 26, .6);
}

.page-products .scene-card__no {
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .18em;
  color: var(--c-orange);
  margin-bottom: 12px;
}

.page-products .scene-card__title {
  font-size: var(--step-h3);
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--c-ice);
}

.page-products .scene-card p {
  margin: 0 0 14px;
  font-size: var(--step-sm);
  line-height: 1.75;
  color: var(--c-mist);
}

.page-products .scene-card__pick {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: var(--step-mono);
  letter-spacing: .08em;
  color: var(--c-cyan-soft);
}

/* ---------- 版本与性能 ---------- */
.page-products .prod-version__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-products .prod-version p {
  color: var(--c-mist);
  font-size: var(--step-body);
  line-height: 1.8;
  margin: 0 0 16px;
}

.page-products .prod-version__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-products .version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 2px solid var(--line-cyan);
  background: rgba(7, 23, 51, .6);
}

.page-products .version-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .version-list li:last-child {
  border-bottom: none;
}

.page-products .version-list__k {
  font-size: var(--step-xs);
  letter-spacing: .04em;
  color: var(--c-mist);
}

.page-products .version-list__v {
  font-family: var(--font-mono);
  font-size: var(--step-sm);
  letter-spacing: .06em;
  color: var(--c-orange-soft);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---------- 收尾 CTA ---------- */
.page-products .prod-cta {
  padding-block: clamp(44px, 7vw, 84px);
  border-top: 2px solid var(--line-cyan);
  background: linear-gradient(180deg, rgba(7, 23, 51, .4), var(--c-night));
}

.page-products .prod-cta__inner {
  max-width: 52em;
}

.page-products .prod-cta__title {
  font-size: clamp(1.5rem, 3.6vw, 2.25rem);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -.025em;
  margin: 0 0 16px;
  color: var(--c-ice);
}

.page-products .prod-cta p {
  color: var(--c-mist);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-products .prod-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

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

  .page-products .prod-search__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
    gap: 40px;
  }

  .page-products .prod-column__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 40px;
  }

  .page-products .prod-flow__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr);
    gap: 44px;
  }

  .page-products .prod-flow__side {
    position: sticky;
    top: 104px;
  }

  .page-products .prod-version__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
    gap: 44px;
  }

  .page-products .glass-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-products .glass-card:nth-child(2) {
    margin-top: 32px;
  }

  .page-products .glass-card:nth-child(3) {
    margin-top: 64px;
  }

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

@media (min-width: 1080px) {
  .page-products .prod-blocks__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .block-card:nth-child(2) {
    --shift: 28px;
  }

  .page-products .block-card:nth-child(3) {
    --shift: 14px;
  }

  .page-products .block-card:nth-child(4) {
    --shift: 42px;
  }

  .page-products .prod-blocks .prod-figure {
    margin-top: 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .block-card,
  .page-products .scene-card,
  .page-products .prod-rail__item,
  .page-products .glass-card {
    transition: none;
  }

  .page-products .block-card:hover,
  .page-products .scene-card:hover,
  .page-products .prod-rail__item:hover,
  .page-products .prod-rail__item:focus-visible {
    transform: none;
  }
}