.page-products {
  --prd-rail-w: 272px;
  --prd-hair: rgba(46, 74, 104, .78);
  --prd-hair-soft: rgba(46, 74, 104, .5);
  --prd-panel-bg: rgba(18, 38, 63, .58);
  position: relative;
  display: block;
  padding-bottom: clamp(52px, 8vw, 104px);
  font-family: var(--xb-font-cn);
  color: var(--xb-snow);
  background:
    radial-gradient(1180px 540px at 10% -6%, rgba(27, 58, 92, .58), transparent 64%),
    radial-gradient(900px 460px at 96% 14%, rgba(255, 106, 31, .07), transparent 60%),
    var(--xb-deep);
}

.page-products .xb-num,
.page-products .xb-mono,
.page-products .prd-hero__num {
  font-variant-numeric: tabular-nums;
}

/* ---------- 顶部索引带 ---------- */
.page-products .prd-topbar {
  max-width: var(--xb-max);
  margin: 0 auto;
  padding: 22px var(--xb-gutter) 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--prd-hair);
}

.page-products .prd-topbar__meta {
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--xb-mist);
  text-transform: uppercase;
  margin: 0;
}

/* ---------- 框景首屏 ---------- */
.page-products .prd-hero {
  padding-top: clamp(26px, 4.6vw, 52px);
}

.page-products .prd-frame {
  position: relative;
  padding: clamp(22px, 3.4vw, 48px);
  border: 1px solid var(--prd-hair);
  border-radius: var(--xb-radius);
  background:
    linear-gradient(152deg, rgba(27, 58, 92, .62) 0%, rgba(10, 26, 46, .82) 58%, rgba(10, 26, 46, .96) 100%);
  box-shadow: var(--xb-shadow);
  overflow: hidden;
}

.page-products .prd-frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 9px;
  background-image: repeating-linear-gradient(to right, var(--xb-rule) 0 1px, transparent 1px 18px);
  opacity: .8;
}

.page-products .prd-frame::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 168px;
  height: 168px;
  background: linear-gradient(225deg, rgba(255, 106, 31, .16), transparent 68%);
  pointer-events: none;
}

.page-products .prd-hero__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 52px);
  align-items: center;
  margin-top: 8px;
}

.page-products .prd-hero__lead {
  max-width: 62ch;
  color: var(--xb-snow);
  opacity: .9;
}

.page-products .prd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-products .prd-hero__facts {
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-products .prd-hero__facts li {
  padding-top: 12px;
  border-top: 1px solid var(--xb-rule);
}

.page-products .prd-hero__num {
  display: block;
  font-family: var(--xb-font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--xb-orange);
}

.page-products .prd-hero__label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--xb-mist);
}

.page-products .prd-hero__media {
  margin: 0;
}

.page-products .prd-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  border: 1px solid var(--prd-hair);
  border-radius: calc(var(--xb-radius) - 4px);
}

/* ---------- 索引列 + 内容列 ---------- */
.page-products .prd-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
}

.page-products .prd-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .prd-rail__link {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 16px;
  border: 1px solid var(--prd-hair);
  border-left: 2px solid transparent;
  border-radius: 10px;
  color: var(--xb-snow);
  text-decoration: none;
  font-size: 15px;
  white-space: nowrap;
  transition: background-color .22s ease, border-color .22s ease, color .22s ease;
}

.page-products .prd-rail__link .xb-num {
  font-family: var(--xb-font-mono);
  font-size: 12px;
  color: var(--xb-mist);
  letter-spacing: .08em;
}

.page-products .prd-rail__link:hover {
  background: rgba(27, 58, 92, .6);
  border-left-color: var(--xb-orange);
}

.page-products .prd-rail__link:focus-visible {
  outline: 2px solid var(--xb-green);
  outline-offset: 2px;
}

.page-products .prd-panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  border: 1px solid var(--prd-hair);
  border-left: 2px solid transparent;
  border-radius: var(--xb-radius);
  background: var(--prd-panel-bg);
  scroll-margin-top: 96px;
  transition: border-color .25s ease, background-color .25s ease;
}

.page-products .prd-panel + .prd-panel {
  margin-top: 16px;
}

.page-products .prd-panel:target {
  border-left-color: var(--xb-orange);
  background: linear-gradient(120deg, rgba(27, 58, 92, .78), rgba(18, 38, 63, .62));
}

.page-products .prd-panel .xb-prose {
  margin-top: 12px;
  color: var(--xb-snow);
  opacity: .88;
}

.page-products .prd-spec {
  margin: 20px 0 0;
  display: grid;
  gap: 12px;
}

.page-products .prd-spec__row {
  padding-top: 12px;
  border-top: 1px dashed var(--prd-hair-soft);
}

.page-products .prd-spec dt {
  font-family: var(--xb-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--xb-mist);
}

.page-products .prd-spec dd {
  margin: 5px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--xb-snow);
}

/* ---------- 功能区 ---------- */
.page-products .prd-feature {
  padding: clamp(20px, 2.8vw, 34px);
  border-radius: var(--xb-radius);
  background: var(--prd-panel-bg);
  border: 1px solid var(--prd-hair);
}

.page-products .prd-feature .xb-prose {
  margin-top: 12px;
  color: var(--xb-snow);
  opacity: .88;
}

.page-products .prd-feature--pending {
  border-color: rgba(255, 194, 75, .42);
  background: linear-gradient(130deg, rgba(255, 194, 75, .08), rgba(18, 38, 63, .6));
}

.page-products .prd-feature__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-products .prd-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
}

.page-products .prd-tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--prd-hair);
  border-radius: 999px;
  font-family: var(--xb-font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--xb-mist);
}

.page-products .prd-alt {
  display: grid;
  gap: clamp(18px, 3vw, 42px);
  align-items: center;
  margin-top: clamp(24px, 3.4vw, 46px);
}

.page-products .prd-alt .xb-prose {
  margin-top: 12px;
  color: var(--xb-snow);
  opacity: .88;
}

.page-products .prd-alt__media {
  margin: 0;
  position: relative;
}

.page-products .prd-alt__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7.6;
  object-fit: cover;
  border: 1px solid var(--prd-hair);
  border-radius: calc(var(--xb-radius) - 4px);
}

.page-products .prd-alt--flip .prd-alt__media img {
  aspect-ratio: 12 / 7;
}

.page-products .prd-media__cap {
  display: block;
  margin-top: 8px;
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--xb-mist);
}

/* ---------- 版本对照 ---------- */
.page-products .prd-timeline-media {
  margin: 0 0 clamp(22px, 3vw, 36px);
}

.page-products .prd-timeline-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 5.6;
  object-fit: cover;
  border: 1px solid var(--prd-hair);
  border-radius: calc(var(--xb-radius) - 4px);
}

.page-products .xb-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .prd-table-caption {
  text-align: left;
  padding-bottom: 12px;
  font-family: var(--xb-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--xb-mist);
}

.page-products .prd-version-table {
  min-width: 720px;
}

.page-products .prd-version-table tbody tr {
  transition: background-color .2s ease, box-shadow .2s ease;
}

.page-products .prd-version-table tbody tr:hover {
  background: rgba(27, 58, 92, .5);
  box-shadow: inset 2px 0 0 var(--xb-orange);
}

.page-products .prd-version-table__row--pending {
  background: rgba(255, 194, 75, .05);
}

/* ---------- 字段与节奏 ---------- */
.page-products .prd-fields__lead {
  margin-bottom: clamp(20px, 2.6vw, 30px);
  color: var(--xb-snow);
  opacity: .9;
}

.page-products .prd-field-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .prd-field {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 18px 0;
  border-top: 1px solid var(--prd-hair-soft);
}

.page-products .prd-field__ix {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--xb-orange);
  padding-top: 4px;
}

.page-products .prd-field__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--xb-snow);
}

.page-products .prd-field__desc {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--xb-mist);
}

.page-products .prd-rhythm {
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--prd-hair);
  border-radius: var(--xb-radius);
  background: linear-gradient(165deg, rgba(27, 58, 92, .6), rgba(10, 26, 46, .7));
}

.page-products .prd-rhythm__lead {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--xb-snow);
  opacity: .85;
}

.page-products .prd-rhythm__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-products .prd-rhythm__item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 14px 0;
  border-top: 1px dashed var(--prd-hair-soft);
}

.page-products .prd-rhythm__time {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--xb-green);
}

.page-products .prd-rhythm__name {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--xb-snow);
}

.page-products .prd-rhythm__body p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--xb-mist);
}

.page-products .prd-rhythm__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--prd-hair);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--xb-mist);
}

/* ---------- 开通流程 ---------- */
.page-products .prd-flow-media {
  margin: 0 0 clamp(22px, 3vw, 36px);
}

.page-products .prd-flow-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 5.6;
  object-fit: cover;
  border: 1px solid var(--prd-hair);
  border-radius: calc(var(--xb-radius) - 4px);
}

.page-products .prd-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-products .prd-flow__step {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--prd-hair);
  border-radius: var(--xb-radius);
  background: var(--prd-panel-bg);
}

.page-products .prd-flow__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(18px, 2.4vw, 28px);
  width: 42px;
  height: 2px;
  background: var(--xb-orange);
}

.page-products .prd-flow__ix {
  display: block;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--xb-mist);
}

.page-products .prd-flow__name {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--xb-snow);
}

.page-products .prd-flow__step p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--xb-mist);
}

.page-products .prd-onboarding__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
  margin: clamp(24px, 3vw, 38px) 0 0;
}

.page-products .prd-onboarding__hint {
  flex: 1 1 320px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--xb-mist);
}

/* ---------- 运行环境 ---------- */
.page-products .prd-env {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
}

.page-products .prd-env__col .xb-prose {
  margin-top: 12px;
  color: var(--xb-snow);
  opacity: .86;
}

.page-products .prd-env__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-products .prd-env__list li {
  padding: 12px 0;
  border-top: 1px dashed var(--prd-hair-soft);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--xb-mist);
}

.page-products .prd-env__key {
  display: inline-block;
  min-width: 72px;
  margin-right: 12px;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--xb-orange);
}

.page-products .prd-code {
  margin-top: 18px;
  border: 1px solid var(--prd-hair);
  border-radius: 12px;
  background: rgba(10, 26, 46, .78);
  padding: 14px 16px;
}

.page-products .prd-codeblock {
  margin: 12px 0 0;
  padding: 16px;
  overflow-x: auto;
  border-left: 2px solid var(--xb-tactic);
  border-radius: 8px;
  background: rgba(27, 58, 92, .38);
  font-family: var(--xb-font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--xb-snow);
  white-space: pre;
}

.page-products .prd-help {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 3.4vw, 46px);
  padding: clamp(20px, 2.8vw, 34px);
  border: 1px solid var(--prd-hair);
  border-left: 2px solid var(--xb-orange);
  border-radius: var(--xb-radius);
  background: linear-gradient(120deg, rgba(27, 58, 92, .6), rgba(18, 38, 63, .45));
}

.page-products .prd-help__text p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--xb-snow);
  opacity: .86;
}

.page-products .prd-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-products .prd-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prd-spec {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 24px;
  }

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

@media (min-width: 900px) {
  .page-products .prd-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .prd-alt {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-products .prd-alt--flip .prd-alt__text {
    order: 2;
  }

  .page-products .prd-alt--flip .prd-alt__media {
    order: 1;
  }

  .page-products .prd-flow__step:nth-child(even) {
    transform: translateY(22px);
  }

  .page-products .prd-onboarding__cta {
    padding-bottom: 22px;
  }
}

@media (min-width: 960px) {
  .page-products .prd-split {
    grid-template-columns: var(--prd-rail-w) minmax(0, 1fr);
  }

  .page-products .prd-split--fields {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .prd-rail {
    position: sticky;
    top: 92px;
    align-self: start;
  }

  .page-products .prd-rail__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .prd-rail__link {
    white-space: normal;
  }

  .page-products .prd-rhythm {
    position: sticky;
    top: 92px;
  }

  .page-products .prd-env {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-products .prd-help {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-products .prd-help__actions {
    justify-content: flex-end;
  }
}

@media (max-width: 600px) {
  .page-products .prd-frame {
    padding: 20px 16px 24px;
  }

  .page-products .prd-rail__link {
    font-size: 14px;
    padding: 10px 12px;
  }

  .page-products .prd-rhythm__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-products .prd-onboarding__hint {
    flex-basis: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prd-rail__link,
  .page-products .prd-panel,
  .page-products .prd-version-table tbody tr {
    transition: none;
  }

  .page-products .prd-flow__step:nth-child(even) {
    transform: none;
  }
}
<<<END>>>