.page-products {
  background: var(--ink);
  color: var(--chalk);
  overflow-x: clip;
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.6vw, 24px);
  padding: clamp(22px, 4vw, 44px) 0 clamp(20px, 3.4vw, 34px);
}

.page-products .prod-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(36px, 7vw, 66px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: .07em;
  color: var(--chalk);
}

.page-products .prod-hero__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: clamp(14.5px, 1.6vw, 16.5px);
  line-height: 1.92;
  color: var(--concrete);
}

.page-products .prod-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-products .prod-hero__meta-v {
  color: var(--signal);
}

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

.page-products .prod-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 14px 18px;
  background: var(--ink);
}

.page-products .prod-hero__stat .data-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--lemon);
}

.page-products .prod-hero__stat-label {
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 图片 ---------- */
.page-products .prod-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

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

.page-products .prod-hero__figure {
  margin-top: 4px;
}

/* ---------- 主布局 ---------- */
.page-products .prod-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 36px);
  padding-top: clamp(24px, 4vw, 48px);
}

/* ---------- 侧边阶梯索引 ---------- */
.page-products .prod-rail {
  min-width: 0;
}

.page-products .prod-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: flex;
  gap: 2px;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.page-products .prod-rail__list::-webkit-scrollbar {
  display: none;
}

.page-products .prod-rail__link {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 13px 10px;
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-products .prod-rail__link:hover {
  color: var(--chalk);
}

.page-products .prod-rail__link:focus-visible {
  outline: 2px solid var(--lemon);
  outline-offset: -2px;
}

.page-products .prod-rail__link.is-active {
  color: var(--chalk);
  border-bottom-color: var(--signal);
}

.page-products .prod-rail__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--signal);
}

/* ---------- 章节 ---------- */
.page-products .prod-body {
  min-width: 0;
}

.page-products .prod-sec {
  padding: clamp(24px, 3.8vw, 42px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-products .prod-body > .prod-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-products .prod-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  align-items: baseline;
  margin-bottom: clamp(14px, 2.2vw, 22px);
}

.page-products .prod-sec__index {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.6vw, 26px);
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
}

.page-products .prod-sec__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: .035em;
  color: var(--chalk);
}

.page-products .prod-sec__lead {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: clamp(14.5px, 1.6vw, 16px);
  line-height: 1.9;
  color: var(--concrete);
}

/* ---------- 资料类型 ---------- */
.page-products .prod-types {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .prod-types__item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  padding: 18px 16px 20px;
  background: var(--ink);
}

.page-products .prod-types__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  line-height: 1.7;
  color: var(--signal);
}

.page-products .prod-types__name {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--chalk);
}

.page-products .prod-types__desc {
  margin: 0 0 10px;
  font-size: 13.6px;
  line-height: 1.8;
  color: var(--concrete);
}

.page-products .tag {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--concrete);
  background: rgba(92, 122, 99, .16);
  border: 1px solid var(--line-strong);
}

/* ---------- 产品线标签页 ---------- */
.page-products .prod-tabs {
  position: relative;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-products .prod-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-products .prod-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: 1px solid var(--line-mid);
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-products .prod-tabs__tab {
  padding: 10px 15px;
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
  font-family: var(--font-head);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--mist);
  cursor: pointer;
  user-select: none;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-products .prod-tabs__tab:hover {
  color: var(--chalk);
}

.page-products #pl-league:checked ~ .prod-tabs__bar [for="pl-league"],
.page-products #pl-team:checked ~ .prod-tabs__bar [for="pl-team"],
.page-products #pl-rule:checked ~ .prod-tabs__bar [for="pl-rule"],
.page-products #pl-history:checked ~ .prod-tabs__bar [for="pl-history"] {
  color: var(--chalk);
  border-bottom-color: var(--signal);
}

.page-products #pl-league:focus-visible ~ .prod-tabs__bar [for="pl-league"],
.page-products #pl-team:focus-visible ~ .prod-tabs__bar [for="pl-team"],
.page-products #pl-rule:focus-visible ~ .prod-tabs__bar [for="pl-rule"],
.page-products #pl-history:focus-visible ~ .prod-tabs__bar [for="pl-history"] {
  outline: 2px solid var(--lemon);
  outline-offset: -2px;
}

.page-products .prod-tabs__panel {
  display: none;
}

.page-products #pl-league:checked ~ .prod-tabs__panels #panel-league,
.page-products #pl-team:checked ~ .prod-tabs__panels #panel-team,
.page-products #pl-rule:checked ~ .prod-tabs__panels #panel-rule,
.page-products #pl-history:checked ~ .prod-tabs__panels #panel-history {
  display: block;
}

.page-products .prod-tabs__panel {
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--steel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
}

.page-products .prod-panel__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--chalk);
}

.page-products .prod-panel__desc {
  margin: 0 0 14px;
  max-width: 60ch;
  font-size: 14.2px;
  line-height: 1.88;
  color: var(--concrete);
}

.page-products .prod-panel__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .prod-panel__list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--concrete);
}

.page-products .prod-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 1px;
  background: var(--signal);
}

.page-products .prod-panel__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
}

/* ---------- 历史查询 ---------- */
.page-products .prod-history {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.6vw, 28px);
  align-items: start;
}

.page-products .prod-history__body {
  min-width: 0;
}

.page-products .prod-dims {
  margin: 0 0 16px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .prod-dims__row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .prod-dims__row dt {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-products .prod-dims__row dd {
  margin: 0;
  font-size: 14.2px;
  line-height: 1.78;
  color: var(--concrete);
}

.page-products .prod-history__note {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
  font-size: 13.4px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 下载流程 ---------- */
.page-products .prod-steps {
  list-style: none;
  margin: 0 0 clamp(18px, 2.8vw, 28px);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .prod-step {
  padding: 18px 16px 20px;
  background: var(--ink);
}

.page-products .prod-step__num {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink);
  background: var(--signal);
}

.page-products .prod-step__title {
  margin: 0 0 7px;
  font-family: var(--font-head);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--chalk);
}

.page-products .prod-step p {
  margin: 0;
  font-size: 13.6px;
  line-height: 1.78;
  color: var(--concrete);
}

.page-products .prod-formats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  margin-bottom: clamp(16px, 2.4vw, 22px);
}

.page-products .prod-format {
  padding: 14px 16px 16px;
  background: var(--ink);
  border: 1px solid var(--line-mid);
}

.page-products .prod-format summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--chalk);
}

.page-products .prod-format summary::-webkit-details-marker {
  display: none;
}

.page-products .prod-format summary::after {
  content: "+";
  font-size: 15px;
  line-height: 1;
  color: var(--signal);
}

.page-products .prod-format[open] summary::after {
  content: "−";
}

.page-products .prod-format summary:focus-visible {
  outline: 2px solid var(--lemon);
  outline-offset: 3px;
}

.page-products .prod-format p {
  margin: 11px 0 0;
  font-size: 13.6px;
  line-height: 1.82;
  color: var(--concrete);
}

.page-products .prod-naming {
  margin: 0 0 clamp(18px, 2.8vw, 26px);
  padding-left: 14px;
  border-left: 2px solid var(--signal);
  max-width: 66ch;
  font-size: 13.6px;
  line-height: 1.88;
  color: var(--mist);
}

/* ---------- 更新节律 ---------- */
.page-products .prod-cadence {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.6vw, 28px);
  align-items: start;
  margin-bottom: clamp(16px, 2.4vw, 22px);
}

.page-products .prod-cadence__body {
  min-width: 0;
}

.page-products .prod-cadence__stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.page-products .prod-cadence__stat .data-num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lemon);
}

.page-products .prod-cadence__unit {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-products .prod-use {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .prod-use li {
  position: relative;
  padding-left: 16px;
  font-size: 13.8px;
  line-height: 1.82;
  color: var(--concrete);
}

.page-products .prod-use li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 6px;
  height: 6px;
  background: var(--moss);
}

.page-products .prod-use strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-head);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--chalk);
}

.page-products .prod-sec__tail {
  margin: 0;
  max-width: 66ch;
  font-size: 13.8px;
  line-height: 1.88;
  color: var(--mist);
}

.page-products .prod-sec__tail a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-products .prod-sec__tail a:hover {
  color: var(--lemon);
}

/* ---------- 底部去向 ---------- */
.page-products .prod-next {
  margin-top: clamp(30px, 4.6vw, 52px);
  padding-top: clamp(22px, 3.2vw, 34px);
  border-top: 1px solid var(--line-mid);
}

.page-products .prod-next__title {
  margin: 8px 0 clamp(16px, 2.4vw, 22px);
  font-family: var(--font-head);
  font-size: clamp(19px, 2.6vw, 27px);
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--chalk);
}

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

.page-products .prod-next__item {
  display: grid;
}

.page-products .prod-next__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink);
  text-decoration: none;
  transition: background .2s var(--ease);
}

.page-products .prod-next__link:hover {
  background: var(--steel);
}

.page-products .prod-next__link:focus-visible {
  outline: 2px solid var(--lemon);
  outline-offset: -2px;
}

.page-products .prod-next__link span:first-child {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--chalk);
}

.page-products .prod-next__link span:last-child {
  font-size: 12.8px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-products .prod-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 860px) {
  .page-products .prod-history {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }

  .page-products .prod-cadence {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
  }

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

@media (min-width: 960px) {
  .page-products .prod-hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-products .prod-hero__meta {
    justify-content: flex-end;
    text-align: right;
    align-self: end;
    padding-top: 0;
    padding-bottom: 4px;
    border-top: 0;
  }

  .page-products .prod-hero__stats,
  .page-products .prod-hero__figure {
    grid-column: 1 / -1;
  }

  .page-products .prod-layout {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: clamp(32px, 4.4vw, 64px);
  }

  .page-products .prod-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-products .prod-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-products .prod-rail__link {
    margin: 0 0 0 -1px;
    padding: 9px 10px 9px 13px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    white-space: normal;
    line-height: 1.55;
  }

  .page-products .prod-rail__link.is-active {
    border-bottom-color: transparent;
    border-left-color: var(--signal);
    background: rgba(255, 107, 26, .07);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-rail__link,
  .page-products .prod-tabs__tab,
  .page-products .prod-next__link {
    transition: none;
  }
}
<<<END>>>