.page-products {
  --pp-line: rgba(8, 20, 24, 0.14);
  --pp-line-soft: rgba(8, 20, 24, 0.08);
  --pp-muted: rgba(8, 20, 24, 0.66);
  --pp-rail-w: 300px;
  --pp-gap: clamp(32px, 4vw, 64px);
  overflow-x: clip;
  background: var(--bb-sand);
  color: var(--bb-ink);
  font-family: var(--bb-font-zh);
}

/* ---------- hero ---------- */
.page-products .pp-hero {
  position: relative;
  overflow: hidden;
  margin-top: calc(-1 * var(--bb-header-h));
  padding: calc(var(--bb-header-h) + 32px) 0 clamp(40px, 6vw, 68px);
  background: var(--bb-deep);
  color: var(--bb-sand);
}

.page-products .pp-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(191, 227, 232, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(191, 227, 232, 0.09) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.85;
  pointer-events: none;
}

.page-products .pp-hero__slash {
  position: absolute;
  top: -18%;
  right: -12%;
  width: 62%;
  height: 150%;
  background: linear-gradient(150deg, rgba(255, 107, 53, 0.92), rgba(255, 209, 102, 0.12) 62%, transparent);
  clip-path: polygon(38% 0, 100% 0, 100% 100%, 6% 100%);
  opacity: 0.32;
  pointer-events: none;
}

.page-products .pp-hero__inner {
  position: relative;
  z-index: 1;
}

.page-products .pp-hero__title {
  margin: 16px 0 0;
  max-width: 20em;
  font-size: clamp(1.9rem, 5.4vw, 3.5rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--bb-sand);
}

.page-products .pp-hero__en {
  display: block;
  margin-bottom: 10px;
  font-family: var(--bb-font-display);
  font-weight: 200;
  font-size: clamp(2rem, 8.5vw, 5.4rem);
  line-height: 0.86;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: rgba(191, 227, 232, 0.42);
}

.page-products .pp-hero__lead {
  margin: 20px 0 0;
  max-width: 54ch;
  color: rgba(246, 241, 231, 0.86);
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
  line-height: 1.78;
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pp-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 36px 0 0;
  background: rgba(191, 227, 232, 0.18);
  border: 1px solid rgba(191, 227, 232, 0.18);
}

.page-products .pp-stat {
  padding: 14px 16px 16px;
  background: rgba(5, 43, 59, 0.86);
}

.page-products .pp-stat__label {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: rgba(191, 227, 232, 0.82);
}

.page-products .pp-stat__num {
  margin: 6px 0 0;
  font-family: var(--bb-font-mono);
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 600;
  line-height: 1;
  color: var(--bb-yellow);
}

/* ---------- jump bar ---------- */
.page-products .pp-jump {
  background: var(--bb-sand);
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-jump__inner {
  display: flex;
  gap: 10px;
  padding-top: 14px;
  padding-bottom: 14px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .pp-jump__tag {
  flex: 0 0 auto;
  text-decoration: none;
  white-space: nowrap;
}

/* ---------- layout ---------- */
.page-products .pp-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-products .pp-rail {
  padding: 28px 0 8px;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-rail__title {
  margin: 0 0 12px;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bb-coral);
}

.page-products .pp-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-products .pp-rail__link {
  display: inline-block;
  padding: 4px 0;
  font-size: 0.88rem;
  color: var(--bb-trench);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-products .pp-rail__link:hover,
.page-products .pp-rail__link:focus-visible {
  border-bottom-color: var(--bb-coral);
}

.page-products .pp-spec {
  border-top: 1px solid var(--pp-line);
}

.page-products .pp-spec__row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--pp-line-soft);
}

.page-products .pp-spec__key {
  font-size: 0.82rem;
  color: var(--pp-muted);
}

.page-products .pp-spec__val {
  font-family: var(--bb-font-mono);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--bb-deep);
}

.page-products .pp-rail__note {
  margin: 18px 0 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--pp-muted);
}

.page-products .pp-rail__note a {
  color: var(--bb-trench);
}

/* ---------- sections ---------- */
.page-products .pp-board {
  padding-top: 8px;
}

.page-products .pp-sec {
  padding: clamp(36px, 5.5vw, 64px) 0;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-sec:last-child {
  border-bottom: 0;
}

.page-products .pp-sec__index {
  margin: 0 0 8px;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--bb-coral);
}

.page-products .pp-sec h2 {
  margin: 0 0 16px;
  font-size: clamp(1.45rem, 3.6vw, 2.2rem);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--bb-deep);
}

.page-products .pp-sec__lead {
  max-width: 62ch;
  margin: 0 0 24px;
  font-size: 1rem;
  line-height: 1.82;
  color: var(--pp-muted);
}

.page-products .pp-subhead {
  margin: 32px 0 14px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--bb-deep);
}

.page-products .pp-subhead::after {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  margin-top: 8px;
  background: var(--bb-coral);
}

.page-products .pp-note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--bb-foam);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--pp-muted);
}

.page-products .pp-note a {
  color: var(--bb-trench);
}

.page-products .pp-figure {
  margin: 24px 0 0;
}

/* ---------- indicators ---------- */
.page-products .pp-indicators {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--pp-line);
  border: 1px solid var(--pp-line);
}

.page-products .pp-ind {
  display: grid;
  gap: 4px;
  padding: 16px 16px 18px;
  background: #fff;
}

.page-products .pp-ind__num {
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--bb-green);
}

.page-products .pp-ind__name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--bb-deep);
}

.page-products .pp-ind__desc {
  font-size: 0.84rem;
  line-height: 1.66;
  color: var(--pp-muted);
}

/* ---------- timeline ---------- */
.page-products .pp-timeline {
  display: flex;
  gap: 0;
  margin-top: 8px;
  padding-bottom: 6px;
  overflow-x: auto;
  border-top: 2px solid var(--pp-line);
  scrollbar-width: thin;
}

.page-products .pp-node {
  position: relative;
  flex: 0 0 auto;
  width: 168px;
  padding: 24px 16px 8px 0;
}

.page-products .pp-node::after {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  background: var(--bb-foam);
  transform: rotate(45deg);
}

.page-products .pp-node--current::after {
  background: var(--bb-yellow);
  box-shadow: 0 0 0 4px rgba(255, 209, 102, 0.24);
}

.page-products .pp-node--coral::after {
  background: var(--bb-coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.18);
}

.page-products .pp-node__round {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--bb-deep);
}

.page-products .pp-node__meta {
  display: block;
  margin-top: 6px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--pp-muted);
}

/* ---------- tables ---------- */
.page-products .pp-table-wrap {
  margin-top: 14px;
  overflow-x: auto;
  border-top: 1px solid rgba(8, 20, 24, 0.28);
}

.page-products .pp-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.page-products .pp-table th,
.page-products .pp-table td {
  padding: 12px 12px 12px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--pp-line-soft);
  line-height: 1.62;
}

.page-products .pp-table thead th {
  padding-top: 10px;
  padding-bottom: 10px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bb-trench);
}

.page-products .pp-cell-mono {
  font-family: var(--bb-font-mono);
  font-size: 0.86rem;
  color: var(--bb-deep);
  white-space: nowrap;
}

.page-products .pp-ok {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #04654a;
  background: rgba(0, 196, 140, 0.14);
  border: 1px solid rgba(0, 196, 140, 0.42);
}

/* ---------- release panel ---------- */
.page-products .pp-panel {
  margin-top: 8px;
  background: #fff;
  border: 1px solid var(--pp-line);
}

.page-products .pp-notice-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-notice {
  border-bottom: 1px solid var(--pp-line-soft);
}

.page-products .pp-notice:last-child {
  border-bottom: 0;
}

.page-products .pp-notice summary,
.page-products .pp-notice__top {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-products .pp-notice__top {
  cursor: default;
}

.page-products .pp-notice summary::-webkit-details-marker {
  display: none;
}

.page-products .pp-notice summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--bb-font-mono);
  font-size: 1rem;
  color: var(--bb-trench);
}

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

.page-products .pp-notice__num {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--bb-trench);
}

.page-products .pp-notice__title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--bb-deep);
}

.page-products .pp-notice--hot {
  background: linear-gradient(180deg, rgba(255, 209, 102, 0.16), rgba(246, 241, 231, 0.4));
  border-left: 3px solid var(--bb-coral);
}

.page-products .pp-notice--hot .pp-notice__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  font-size: 13px;
  font-weight: 600;
  color: var(--bb-ink);
  background: var(--bb-yellow);
  border-radius: var(--bb-radius);
  transform: translateY(4px);
}

.page-products .pp-notice__body {
  padding: 4px 18px 22px;
}

.page-products .pp-notice__body p {
  margin: 0;
  max-width: 60ch;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--pp-muted);
}

.page-products .pp-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: ppstep;
}

.page-products .pp-step {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--pp-line);
}

.page-products .pp-step:last-child {
  border-bottom: 0;
}

.page-products .pp-step__num {
  font-family: var(--bb-font-mono);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--bb-coral);
}

.page-products .pp-step__text {
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--bb-ink);
}

.page-products .pp-step__text strong {
  color: var(--bb-deep);
}

.page-products .pp-copy {
  display: inline-block;
  margin-top: 8px;
  padding: 7px 12px;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  color: var(--bb-deep);
  background: transparent;
  border: 1px solid rgba(5, 43, 59, 0.34);
  border-radius: var(--bb-radius);
  cursor: pointer;
}

.page-products .pp-copy:hover,
.page-products .pp-copy:focus-visible {
  border-color: var(--bb-coral);
  color: var(--bb-coral);
}

.page-products .pp-copy[data-copied]::after {
  content: " 已复制";
  color: var(--bb-green);
}

/* ---------- version evolution ---------- */
.page-products .pp-sec--versions {
  background: linear-gradient(180deg, rgba(191, 227, 232, 0.28), transparent 72%);
  margin-left: calc(-1 * var(--bb-gutter));
  margin-right: calc(-1 * var(--bb-gutter));
  padding-left: var(--bb-gutter);
  padding-right: var(--bb-gutter);
}

.page-products .pp-evo {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 20px;
}

.page-products .pp-evo__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--pp-line);
}

.page-products .pp-evo__item {
  position: relative;
  display: grid;
  gap: 4px;
  padding: 0 0 18px 20px;
}

.page-products .pp-evo__item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -5px;
  width: 9px;
  height: 9px;
  background: var(--bb-foam);
  transform: rotate(45deg);
}

.page-products .pp-evo__item--now::before {
  background: var(--bb-coral);
}

.page-products .pp-evo__year {
  font-family: var(--bb-font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--bb-deep);
}

.page-products .pp-evo__item--now .pp-evo__year {
  color: var(--bb-coral);
}

.page-products .pp-evo__text {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--pp-muted);
}

.page-products .pp-evo__media {
  margin: 0;
}

/* ---------- route cards ---------- */
.page-products .pp-route {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 8px;
  background: var(--pp-line);
  border: 1px solid var(--pp-line);
}

.page-products .pp-route__card {
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  background: #fff;
  text-decoration: none;
  transition: background 180ms ease, transform 180ms ease;
}

.page-products .pp-route__card:hover,
.page-products .pp-route__card:focus-visible {
  background: var(--bb-deep);
  transform: translateY(-2px);
}

.page-products .pp-route__kicker {
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--bb-coral);
}

.page-products .pp-route__title {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--bb-deep);
}

.page-products .pp-route__desc {
  font-size: 0.84rem;
  line-height: 1.66;
  color: var(--pp-muted);
}

.page-products .pp-route__card:hover .pp-route__title,
.page-products .pp-route__card:focus-visible .pp-route__title {
  color: var(--bb-sand);
}

.page-products .pp-route__card:hover .pp-route__desc,
.page-products .pp-route__card:focus-visible .pp-route__desc {
  color: rgba(246, 241, 231, 0.82);
}

.page-products .pp-route__card:hover .pp-route__kicker,
.page-products .pp-route__card:focus-visible .pp-route__kicker {
  color: var(--bb-yellow);
}

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

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

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

@media (min-width: 900px) {
  .page-products .pp-indicators {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-products .pp-route {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-products .pp-layout {
    grid-template-columns: var(--pp-rail-w) minmax(0, 1fr);
    gap: var(--pp-gap);
  }

  .page-products .pp-rail {
    position: sticky;
    top: calc(var(--bb-header-h) + 20px);
    align-self: start;
    padding-bottom: 0;
    border-bottom: 0;
    border-right: 1px solid var(--pp-line);
    padding-right: 26px;
  }

  .page-products .pp-rail__list {
    display: block;
  }

  .page-products .pp-rail__list li + li {
    margin-top: 2px;
  }

  .page-products .pp-rail__link {
    padding: 6px 0;
    font-size: 0.9rem;
  }

  .page-products .pp-sec--versions {
    margin-left: calc(-1 * var(--pp-gap) - 26px);
    margin-right: calc(-1 * 24px);
    padding-left: calc(var(--pp-gap) + 26px);
    padding-right: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-route__card {
    transition: none;
  }

  .page-products .pp-route__card:hover {
    transform: none;
  }
}
<<<END>>>