.page-products {
  --pd-sticky-top: 92px;
  background:
    radial-gradient(880px 460px at 82% -6%, rgba(49, 230, 214, 0.10), transparent 62%),
    radial-gradient(680px 400px at 4% 6%, rgba(255, 106, 42, 0.08), transparent 60%),
    var(--ink-900);
  color: var(--ivory);
  font-family: var(--font-body);
}

.page-products img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-products .zk-figure {
  margin: 0;
}

/* ---------- 面包屑 ---------- */
.page-products .zk-breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-products .zk-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-products .zk-breadcrumb__sep {
  color: var(--line-strong);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 52px);
  padding-block: clamp(24px, 5vw, 56px) clamp(34px, 6vw, 72px);
  align-items: center;
}

.page-products .pd-hero__copy {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-products .pd-coord {
  list-style: none;
  margin: 10px 0 0;
  padding: 16px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 14px 20px;
  border-top: 1px solid var(--line);
}

.page-products .pd-coord li {
  display: grid;
  gap: 5px;
}

.page-products .pd-coord span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ash);
}

.page-products .pd-coord b {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: 0.03em;
}

.page-products .pd-hero__figure .zk-figure__frame {
  padding: 10px;
  border-radius: var(--r-xl);
  border: 1px solid var(--line-strong);
  background: var(--ink-800);
  box-shadow: 0 30px 64px -36px rgba(0, 0, 0, 0.92);
}

.page-products .pd-hero__figure img {
  width: 100%;
  border-radius: var(--r-lg);
}

.page-products .zk-figure__cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ash);
}

/* ---------- 章节标题 ---------- */
.page-products .pd-head {
  display: grid;
  gap: 13px;
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}

/* ---------- 两步路径 ---------- */
.page-products .pd-path {
  display: grid;
  gap: 20px;
}

.page-products .pd-rail {
  padding: 18px 20px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-products .pd-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .pd-rail__item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ash);
  font-size: 14px;
}

.page-products .pd-rail__item.is-active {
  color: var(--ivory);
}

.page-products .pd-rail__num {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  font-size: 12px;
  color: var(--ash);
}

.page-products .pd-rail__item.is-active .pd-rail__num {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--ink-900);
  font-weight: 600;
}

.page-products .pd-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ash);
}

.page-products .pd-steps {
  display: grid;
  gap: 14px;
}

.page-products .pd-step {
  display: grid;
  gap: 10px;
  padding: clamp(18px, 3vw, 28px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.page-products .pd-step:hover {
  background: var(--ink-700);
  border-color: var(--line-strong);
}

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

.page-products .pd-step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-products .pd-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ivory);
  opacity: 0.86;
}

.page-products .pd-path__figure {
  margin-top: clamp(24px, 4vw, 38px);
}

.page-products .pd-path__figure .zk-figure__frame {
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 8px;
}

.page-products .pd-path__figure img {
  width: 100%;
  border-radius: var(--r-md);
}

/* ---------- 目录树 ---------- */
.page-products .pd-catalog {
  display: grid;
  gap: 26px;
}

.page-products .pd-tree {
  display: grid;
  gap: 11px;
}

.page-products .pd-branch {
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-products .pd-branch:hover {
  border-color: var(--line-strong);
}

.page-products .pd-branch[open] {
  border-color: rgba(49, 230, 214, 0.34);
  background: var(--ink-700);
}

.page-products .pd-branch > summary {
  cursor: pointer;
  list-style: none;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
}

.page-products .pd-branch > summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-branch > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--ash);
  transition: color 0.16s ease;
}

.page-products .pd-branch[open] > summary::after {
  content: "−";
  color: var(--cyan);
}

.page-products .pd-branch > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-products .pd-branch__id {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-products .pd-branch__name {
  font-size: clamp(15px, 2vw, 17px);
  font-weight: 600;
  color: var(--ivory);
}

.page-products .pd-branch__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ash);
  white-space: nowrap;
}

.page-products .pd-branch__body {
  display: grid;
  gap: 12px;
  padding: 0 18px 18px;
}

.page-products .pd-branch__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ash);
}

.page-products .pd-sub {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .pd-sub li {
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--teal);
  color: var(--ivory);
  font-size: 13px;
  line-height: 1.5;
}

.page-products .pd-catalog__figure .zk-figure__frame {
  padding: 8px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-products .pd-catalog__figure img {
  width: 100%;
  border-radius: var(--r-md);
}

/* ---------- 版本状态 ---------- */
.page-products .pd-version {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-products .pd-version__copy {
  display: grid;
  gap: 14px;
}

.page-products .pd-version__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .pd-version__link {
  margin: 4px 0 0;
  font-size: 14px;
}

.page-products .pd-version__figure .zk-figure__frame {
  padding: 8px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(242, 184, 75, 0.28);
  background: var(--ink-800);
}

.page-products .pd-version__figure img {
  width: 100%;
  border-radius: var(--r-md);
}

.page-products .pd-scalebar {
  margin-top: clamp(22px, 4vw, 34px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 16px;
}

.page-products .pd-scalebar__line {
  height: 20px;
  border-bottom: 1px solid var(--line-strong);
  background-image: repeating-linear-gradient(
    to right,
    var(--line-strong) 0 1px,
    transparent 1px 16px
  );
}

.page-products .pd-scalebar__mark {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- 设备适配 ---------- */
.page-products .pd-device {
  display: grid;
  gap: 26px;
}

.page-products .pd-matrix {
  display: grid;
  gap: 11px;
}

.page-products .pd-matrix__row {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
  transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.page-products .pd-matrix__row:hover {
  background: var(--ink-700);
  border-color: rgba(49, 230, 214, 0.36);
  transform: translateY(-2px);
}

.page-products .pd-matrix__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--cyan);
}

.page-products .pd-matrix__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ivory);
}

.page-products .pd-matrix__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--ash);
}

.page-products .pd-device__figure .zk-figure__frame {
  padding: 8px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-products .pd-device__figure img {
  width: 100%;
  border-radius: var(--r-md);
}

/* ---------- 常见问题与客服 ---------- */
.page-products .pd-faq {
  display: grid;
  gap: 10px;
}

.page-products .pd-faq__item {
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--ink-800);
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-products .pd-faq__item:hover {
  border-color: var(--line-strong);
}

.page-products .pd-faq__item[open] {
  background: var(--ink-700);
  border-color: rgba(49, 230, 214, 0.30);
}

.page-products .pd-faq__item > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ivory);
}

.page-products .pd-faq__item > summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-faq__item > summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--ash);
}

.page-products .pd-faq__item[open] > summary::after {
  content: "−";
  color: var(--cyan);
}

.page-products .pd-faq__item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-products .pd-faq__item p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ash);
}

.page-products .pd-help {
  margin-top: clamp(28px, 4vw, 44px);
  display: grid;
  gap: 18px;
  padding: clamp(22px, 4vw, 34px);
  border-radius: var(--r-xl);
  border: 1px solid rgba(49, 230, 214, 0.28);
  background: linear-gradient(140deg, rgba(49, 230, 214, 0.13), rgba(11, 34, 51, 0.94) 58%);
}

.page-products .pd-help__copy {
  display: grid;
  gap: 10px;
}

.page-products .pd-help__copy h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 24px);
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-products .pd-help__copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ivory);
  opacity: 0.86;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-products .pd-catalog {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-products .pd-catalog__figure {
    position: sticky;
    top: var(--pd-sticky-top);
  }

  .page-products .pd-device {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-products .pd-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-products .pd-path {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
    gap: 28px;
  }

  .page-products .pd-rail {
    position: sticky;
    top: var(--pd-sticky-top);
  }

  .page-products .pd-matrix__row {
    grid-template-columns: 168px minmax(0, 1fr) 216px;
    align-items: start;
    gap: 22px;
  }
}

@media (min-width: 900px) {
  .page-products .pd-version {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-products .pd-help {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-products .pd-help__actions {
    flex-wrap: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-step,
  .page-products .pd-branch,
  .page-products .pd-matrix__row,
  .page-products .pd-faq__item,
  .page-products .pd-branch > summary::after {
    transition: none;
  }

  .page-products .pd-matrix__row:hover {
    transform: none;
  }
}
<<<END>>>