.page-products {
  --pp-gap: clamp(18px, 3vw, 32px);
}

.page-products .crumb {
  margin: 16px 0 14px;
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 58px) clamp(20px, 4vw, 54px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background:
    radial-gradient(130% 150% at 92% -14%, rgba(255, 106, 43, 0.24), transparent 60%),
    radial-gradient(110% 130% at 2% 112%, rgba(34, 211, 224, 0.2), transparent 58%),
    var(--c-panel);
  box-shadow: var(--shadow-panel);
}

.page-products .prod-hero::before {
  content: "";
  position: absolute;
  right: -6%;
  bottom: -40%;
  width: 48%;
  height: 130%;
  background: var(--grad);
  opacity: 0.13;
  clip-path: polygon(30% 0, 100% 0, 70% 100%, 0 100%);
  pointer-events: none;
}

.page-products .prod-hero__body {
  position: relative;
  z-index: 1;
  max-width: 48rem;
}

.page-products .prod-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
  text-transform: uppercase;
}

.page-products h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 5.6vw, 60px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.page-products .prod-hero__lede {
  margin: 0 0 26px;
  max-width: 34em;
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--c-muted);
}

.page-products .prod-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
  max-width: 40rem;
}

.page-products .prod-fact {
  padding: 12px 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: rgba(11, 18, 32, 0.55);
}

.page-products .prod-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.02em;
  color: var(--c-orange);
  line-height: 1.2;
}

.page-products .prod-fact__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--c-muted);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 控制台布局 ---------- */
.page-products .prod-console {
  margin-top: var(--pp-gap);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
}

.page-products .prod-rail {
  padding: 16px 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-panel);
  box-shadow: var(--shadow-panel);
}

.page-products .prod-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  text-transform: uppercase;
}

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

/* ---------- 章节 ---------- */
.page-products .prod-sec {
  scroll-margin-top: 96px;
}

.page-products .prod-sec + .prod-sec {
  margin-top: clamp(42px, 6vw, 76px);
  padding-top: clamp(30px, 4vw, 48px);
  border-top: 1px solid var(--c-line);
}

.page-products .prod-sec__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-products .prod-sec__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-orange);
}

.page-products .prod-sec h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.page-products .prod-sec__lead {
  margin: 0;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-products .prod-sec h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--c-text);
}

/* ---------- 图 ---------- */
.page-products .prod-figure {
  margin: 0 0 clamp(20px, 3vw, 28px);
}

.page-products .prod-figure .figure__media {
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background:
    repeating-linear-gradient(90deg, rgba(42, 58, 87, 0.42) 0 1px, transparent 1px 42px),
    repeating-linear-gradient(0deg, rgba(42, 58, 87, 0.42) 0 1px, transparent 1px 42px),
    linear-gradient(140deg, rgba(255, 106, 43, 0.16), rgba(34, 211, 224, 0.16));
}

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

.page-products .prod-figure .figure__caption {
  margin-top: 9px;
  font-size: 12.5px;
  color: var(--c-muted);
  letter-spacing: 0.01em;
}

/* ---------- 下载区 ---------- */
.page-products .prod-dl-grid {
  display: grid;
  gap: clamp(16px, 2.6vw, 26px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .prod-dl-grid .prod-figure {
  margin-bottom: 0;
}

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

.page-products .prod-fold {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-panel);
  overflow: hidden;
  transition: border-color 0.24s var(--ease);
}

.page-products .prod-fold + .prod-fold {
  margin-top: 10px;
}

.page-products .prod-fold[open] {
  border-color: rgba(34, 211, 224, 0.42);
}

.page-products .prod-fold__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .prod-fold__name {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
}

.page-products .prod-fold__hint {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
}

.page-products .prod-fold__body {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--c-line);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-products .prod-fold__body p {
  margin: 0;
}

/* ---------- 版本节奏 ---------- */
.page-products .prod-cadence {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .prod-cadence__card {
  position: relative;
  padding: 20px 18px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-orange);
  border-radius: var(--radius-sm);
  background: var(--c-panel);
}

.page-products .prod-cadence__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 26px;
  height: 26px;
  background: var(--grad);
  opacity: 0.5;
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}

.page-products .prod-cadence__card--note {
  border-left-color: var(--c-cyan);
}

.page-products .prod-cadence__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
  text-transform: uppercase;
}

.page-products .prod-cadence__card p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------- 步骤 ---------- */
.page-products .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .steps__item {
  position: relative;
  padding: 20px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, rgba(34, 211, 224, 0.07), transparent 62%),
    var(--c-panel);
}

.page-products .steps__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-lime);
}

.page-products .steps__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------- 索引目录 ---------- */
.page-products .prod-index-grid {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  grid-template-columns: minmax(0, 1fr);
  margin-bottom: 22px;
}

.page-products .prod-index-grid .prod-figure {
  margin-bottom: 0;
}

.page-products .prod-index__hint {
  margin: 0 0 12px;
  font-size: 13.5px;
  color: var(--c-muted);
}

.page-products .prod-index__note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--c-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(34, 211, 224, 0.06);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-products .ver-switch {
  position: relative;
  min-width: 0;
}

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

.page-products .ver-switch__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.page-products .ver-switch__tab {
  padding: 7px 15px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
  border: 1px solid var(--c-line);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-products .ver-switch__tab:hover {
  border-color: var(--c-cyan);
  color: var(--c-text);
}

.page-products #pv-a:checked ~ .ver-switch__bar .ver-switch__tab[for="pv-a"],
.page-products #pv-b:checked ~ .ver-switch__bar .ver-switch__tab[for="pv-b"],
.page-products #pv-c:checked ~ .ver-switch__bar .ver-switch__tab[for="pv-c"] {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-base);
  font-weight: 700;
}

.page-products .ver-switch__panel {
  display: none;
}

.page-products #pv-a:checked ~ .ver-switch__panels .ver-switch__panel[data-ver="a"],
.page-products #pv-b:checked ~ .ver-switch__panels .ver-switch__panel[data-ver="b"],
.page-products #pv-c:checked ~ .ver-switch__panels .ver-switch__panel[data-ver="c"] {
  display: block;
}

.page-products .prod-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-panel);
}

.page-products .prod-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .prod-table__cap {
  padding: 12px 14px 6px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}

.page-products .prod-table th,
.page-products .prod-table td {
  padding: 11px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--c-line);
}

.page-products .prod-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
  background: rgba(34, 211, 224, 0.06);
  white-space: nowrap;
}

.page-products .prod-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .prod-table td:nth-child(2),
.page-products .prod-table td:nth-child(3) {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-cyan);
  white-space: nowrap;
}

.page-products .prod-table td:nth-child(4) {
  color: var(--c-muted);
}

/* ---------- 五类面板 ---------- */
.page-products .prod-panels {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(178px, 1fr));
}

.page-products .prod-panel-card {
  padding: 18px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-panel);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-products .prod-panel-card:hover {
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

.page-products .prod-panel-card__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-orange);
}

.page-products .prod-panel-card p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--c-muted);
}

/* ---------- 旧版本 ---------- */
.page-products .prod-legacy {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .prod-legacy__item {
  padding: 20px 18px;
  border: 1px solid var(--c-line);
  border-top: 2px solid rgba(255, 106, 43, 0.65);
  border-radius: var(--radius-sm);
  background: var(--c-panel);
}

.page-products .prod-legacy__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
}

.page-products .prod-legacy__item p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------- 结尾 CTA ---------- */
.page-products .prod-cta {
  margin-top: clamp(34px, 5vw, 54px);
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 160% at 100% 0%, rgba(34, 211, 224, 0.15), transparent 62%),
    radial-gradient(120% 160% at 0% 100%, rgba(255, 106, 43, 0.15), transparent 62%),
    var(--c-panel);
  box-shadow: var(--shadow-panel);
}

.page-products .prod-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(21px, 2.6vw, 27px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.page-products .prod-cta p {
  margin: 0 0 20px;
  max-width: 36em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-products .prod-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-products .prod-dl-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-products .prod-cadence__card--note {
    grid-column: 1 / -1;
  }

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

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

  .page-products .steps__item::after {
    content: "";
    position: absolute;
    top: 32px;
    right: -14px;
    width: 14px;
    height: 1px;
    background: var(--c-line);
  }

  .page-products .steps__item:last-child::after {
    display: none;
  }
}

@media (min-width: 960px) {
  .page-products .prod-console {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: clamp(28px, 3.6vw, 48px);
    align-items: start;
  }

  .page-products .prod-rail {
    position: sticky;
    top: 86px;
    padding: 20px 16px;
  }

  .page-products .prod-index-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

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

  .page-products .prod-cadence__card--note {
    grid-column: auto;
  }

  .page-products .prod-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
  }

  .page-products .prod-cta__text {
    max-width: 40rem;
  }

  .page-products .prod-cta p {
    margin-bottom: 0;
  }
}

@media (min-width: 1180px) {
  .page-products .prod-dl-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-panel-card,
  .page-products .ver-switch__tab,
  .page-products .prod-fold {
    transition: none;
  }

  .page-products .prod-panel-card:hover {
    transform: none;
  }
}
<<<END>>>