.page-products-standard {
  --ps-rail: calc(var(--space-4) * 3);
  display: block;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

/* ---------- 页首深底带 ---------- */
.page-products-standard .ps-band {
  position: relative;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-6) var(--space-8);
}

.page-products-standard .ps-band::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--color-contrast-line) 70%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--color-contrast-line) 70%, transparent) 1px, transparent 1px);
  background-size: calc(var(--space-4) * 2) calc(var(--space-4) * 2);
  opacity: 0.55;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9) 0%, transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9) 0%, transparent 88%);
}

.page-products-standard .ps-band .wrap {
  position: relative;
}

.page-products-standard .ps-band .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-products-standard .ps-band .crumbs a {
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  transition: border-color 160ms ease;
}

.page-products-standard .ps-band .crumbs a:hover {
  border-bottom-color: var(--color-contrast-accent);
}

.page-products-standard .ps-band-grid {
  display: grid;
  gap: var(--space-6);
}

.page-products-standard .ps-eyebrow {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-products-standard .ps-band h1 {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  max-width: 22ch;
}

.page-products-standard .ps-lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-products-standard .ps-band-facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-products-standard .ps-band-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}

.page-products-standard .ps-band-facts .mono {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-products-standard .ps-band-figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--border-thin) solid var(--color-contrast-line);
  background-color: var(--color-contrast-surface);
}

.page-products-standard .ps-band-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-products-standard .ps-band-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-contrast-surface) 8%, transparent) 0%,
    color-mix(in srgb, var(--color-contrast-surface) 58%, transparent) 100%
  );
}

.page-products-standard .ps-band-figure figcaption {
  position: relative;
  z-index: 1;
  margin-top: 0;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
  background-color: var(--color-contrast-surface);
}

@media (min-width: 900px) {
  .page-products-standard .ps-band-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
    gap: var(--space-8);
  }
}

/* ---------- 主路径：左侧刻度尺 + 右侧条目流 ---------- */
.page-products-standard .ps-trace {
  display: grid;
  gap: var(--space-4);
  padding-block: var(--section-y);
}

.page-products-standard .ps-rail-list {
  display: flex;
  gap: var(--space-2);
  margin: 0;
  padding: 0 0 var(--space-1);
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products-standard .ps-rail a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-products-standard .ps-rail a:hover,
.page-products-standard .ps-rail a:focus-visible {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary-soft);
}

.page-products-standard .ps-rail .mono {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
}

@media (min-width: 960px) {
  .page-products-standard .ps-trace {
    grid-template-columns: var(--ps-rail) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-products-standard .ps-rail {
    position: sticky;
    top: var(--space-6);
  }

  .page-products-standard .ps-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0 0 0 var(--space-3);
    position: relative;
  }

  .page-products-standard .ps-rail-list::before {
    content: "";
    position: absolute;
    left: 0;
    top: var(--space-1);
    bottom: var(--space-1);
    width: var(--border-thin);
    background-color: var(--color-line);
  }

  .page-products-standard .ps-rail a {
    display: block;
    position: relative;
    padding: var(--space-1) 0;
    border: 0;
    border-radius: 0;
    background-color: transparent;
  }

  .page-products-standard .ps-rail a::before {
    content: "";
    position: absolute;
    left: calc(var(--space-3) * -1);
    top: 50%;
    width: var(--space-1);
    height: var(--border-thin);
    background-color: var(--color-line);
    transform: translateY(-50%);
    transition: background-color 160ms ease, width 160ms ease;
  }

  .page-products-standard .ps-rail a:hover::before,
  .page-products-standard .ps-rail a:focus-visible::before {
    background-color: var(--color-primary);
    width: var(--space-2);
  }

  .page-products-standard .ps-rail .ps-rail-name {
    display: block;
    margin-top: 2px;
    font-size: var(--text-xs);
  }
}

/* ---------- 条目块 ---------- */
.page-products-standard .ps-flow {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
}

.page-products-standard .ps-block {
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
}

.page-products-standard .ps-block--plain {
  background-color: var(--color-surface);
}

.page-products-standard .ps-block--alt {
  background-color: var(--color-surface-alt);
  border-color: transparent;
}

.page-products-standard .ps-block--deep {
  background-color: var(--color-surface-deep);
  border-color: transparent;
}

@media (min-width: 640px) {
  .page-products-standard .ps-block {
    padding: var(--space-6);
  }
}

.page-products-standard .ps-block-head {
  margin-bottom: var(--space-4);
}

.page-products-standard .seq-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-products-standard .ps-block h2 {
  margin: var(--space-1) 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-products-standard .ps-block-lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-products-standard .ps-entries {
  display: grid;
  gap: var(--space-2);
}

.page-products-standard .ps-entry {
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-products-standard .ps-entry:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-products-standard .ps-entry h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-products-standard .ps-entry-idx {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.page-products-standard .ps-entry p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-products-standard .ps-num {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
}

/* ---------- 正文插图 ---------- */
.page-products-standard .ps-figure {
  margin: 0 0 var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-surface);
}

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

.page-products-standard .ps-figure figcaption {
  padding: var(--space-2) var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

.page-products-standard .ps-close-figure {
  margin-bottom: var(--space-4);
}

.page-products-standard .ps-close-figure .ps-figure {
  margin-bottom: 0;
  border-radius: var(--radius-md);
}

/* ---------- 相邻主题窄条 ---------- */
.page-products-standard .ps-next {
  display: grid;
  gap: var(--space-2);
}

.page-products-standard .ps-next a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-alt);
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.page-products-standard .ps-next a:hover,
.page-products-standard .ps-next a:focus-visible {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.page-products-standard .ps-next-text {
  display: block;
  min-width: 0;
}

.page-products-standard .ps-next-title {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-products-standard .ps-next-desc {
  display: block;
  margin-top: 2px;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
}

.page-products-standard .ps-next-go {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-primary);
}

@media (min-width: 720px) {
  .page-products-standard .ps-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-products-standard .ps-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 639px) {
  .page-products-standard .ps-band {
    padding-block: var(--space-4) var(--space-6);
  }

  .page-products-standard .ps-band h1 {
    font-size: var(--text-2xl);
    max-width: none;
  }

  .page-products-standard .ps-trace {
    padding-block: var(--space-6);
  }

  .page-products-standard .ps-block h2 {
    font-size: var(--text-lg);
  }

  .page-products-standard .ps-entry h3 {
    font-size: var(--text-base);
  }

  .page-products-standard .ps-band-facts .mono {
    font-size: var(--text-lg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products-standard .ps-rail a,
  .page-products-standard .ps-rail a::before,
  .page-products-standard .ps-next a,
  .page-products-standard .ps-band .crumbs a {
    transition: none;
  }
}