.page-products {
  --pg-rail: 232px;
}

/* ---------- 首屏 ---------- */
.page-products .pg-hero {
  padding: clamp(36px, 5vw, 64px) 0 clamp(36px, 4.5vw, 56px);
}

.page-products .pg-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.8vw, 54px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 18px 0 0;
  max-width: 20ch;
}

.page-products .pg-gold {
  background: linear-gradient(115deg, var(--gold-lite) 0%, var(--gold) 72%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-products .pg-hero__lead {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pg-hero__readout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 0;
  margin-top: 30px;
  padding: 12px 0;
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-products .pg-hero__readout span + span::before {
  content: "/";
  margin: 0 14px;
  color: var(--grid);
}

/* ---------- 双栏骨架 ---------- */
.page-products .pg-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-bottom: clamp(60px, 8vw, 120px);
}

.page-products .pg-rail {
  padding: 16px 0 8px;
  border-top: 1px solid var(--grid);
  margin-bottom: 8px;
}

.page-products .pg-rail__meta {
  margin: 0 0 12px;
}

.page-products .pg-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-products .pg-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 2px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .pg-rail__link:hover,
.page-products .pg-rail__link[aria-current] {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-products .pg-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  opacity: 0.8;
}

/* ---------- 章节 ---------- */
.page-products .pg-sec {
  padding: clamp(52px, 7vw, 92px) 0;
  border-top: 1px solid var(--grid-soft);
  scroll-margin-top: calc(var(--head-h) + 24px);
}

.page-products .pg-sec:first-child {
  border-top: 0;
  padding-top: clamp(32px, 4vw, 48px);
}

.page-products .pg-num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 6.5vw, 62px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-products .pg-h2 {
  font-family: var(--font-display);
  font-size: clamp(23px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 14px;
}

.page-products .pg-sec p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  margin: 0 0 18px;
  max-width: 64ch;
}

.page-products .pg-sec .pg-lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 30px;
  max-width: 52ch;
}

/* ---------- 图文分栏 ---------- */
.page-products .pg-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

/* ---------- 图片 ---------- */
.page-products .figure {
  margin: 0;
  border: 1px solid var(--grid);
  background: var(--ink-2);
  max-width: 100%;
}

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

.page-products .pg-fig-tall img {
  aspect-ratio: 3 / 4;
}

.page-products .pg-fig-wide img {
  aspect-ratio: 12 / 7;
}

.page-products .pg-fig-sq img {
  aspect-ratio: 1 / 1;
}

.page-products .figure__caption {
  border-top: 1px solid var(--grid);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 参数列表 ---------- */
.page-products .pg-spec {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-products .pg-spec li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--grid-soft);
  font-size: 14px;
}

.page-products .pg-spec__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-products .pg-spec__v {
  color: var(--paper);
}

/* ---------- 额度附注三级缩进 ---------- */
.page-products .pg-annot {
  margin-top: 32px;
  border: 1px solid var(--grid);
  background: var(--ink-2);
}

.page-products .pg-annot__row1 {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding: 16px 16px 16px 20px;
  border-bottom: 1px solid var(--grid-soft);
}

.page-products .pg-annot__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  border: 1px solid var(--grid);
  padding: 2px 6px;
}

.page-products .pg-annot__name {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
}

.page-products .pg-annot__row2 {
  padding: 14px 16px 14px 40px;
  border-left: 2px solid var(--grid);
  border-bottom: 1px solid var(--grid-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-products .pg-annot details {
  border-left: 2px solid var(--grid-soft);
}

.page-products .pg-annot summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px 12px 64px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--muted);
  transition: color 180ms var(--ease);
}

.page-products .pg-annot summary::-webkit-details-marker {
  display: none;
}

.page-products .pg-annot summary::before {
  content: "+";
  flex: none;
  width: 12px;
  font-size: 14px;
  line-height: 1;
  color: var(--cyan);
}

.page-products .pg-annot details[open] summary::before {
  content: "\2212";
}

.page-products .pg-annot summary:hover {
  color: var(--gold-lite);
}

.page-products .pg-sec .pg-annot details p {
  padding: 0 16px 16px 64px;
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  border-left: 0;
}

/* ---------- 双图并排 ---------- */
.page-products .pg-duo {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

/* ---------- 筛选示意 ---------- */
.page-products .pg-diagram {
  margin: 0 0 28px;
  padding: 20px 16px;
  border: 1px solid var(--grid);
  background: var(--ink-2);
}

.page-products .pg-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pg-tablewrap {
  overflow-x: auto;
  border: 1px solid var(--grid);
  background: var(--ink-2);
}

.page-products .pg-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pg-table th {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}

.page-products .pg-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--grid-soft);
  color: var(--paper);
}

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

.page-products .pg-table td:first-child {
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-products .pg-table td:nth-child(3) {
  font-family: var(--font-mono);
  color: var(--coral);
}

/* ---------- 版本轨迹 ---------- */
.page-products .pg-track {
  margin: 30px 0 0;
  border-left: 1px solid var(--grid);
}

.page-products .pg-node {
  position: relative;
  padding: 0 0 26px 24px;
}

.page-products .pg-node:last-child {
  padding-bottom: 0;
}

.page-products .pg-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--gold);
}

.page-products .pg-node__ver {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
  color: var(--gold);
}

.page-products .pg-node__year {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-products .pg-sec .pg-node__txt {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  max-width: 34ch;
}

/* ---------- 安装步骤 ---------- */
.page-products .pg-steps {
  margin-top: 4px;
  border-top: 1px solid var(--grid);
}

.page-products .pg-step {
  border-bottom: 1px solid var(--grid-soft);
}

.page-products .pg-step summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  color: var(--paper);
  transition: color 180ms var(--ease);
}

.page-products .pg-step summary::-webkit-details-marker {
  display: none;
}

.page-products .pg-step summary:hover {
  color: var(--gold);
}

.page-products .pg-step__n {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold);
  border: 1px solid var(--grid);
  padding: 2px 6px;
}

.page-products .pg-sec .pg-step__body {
  margin: 0;
  padding: 0 0 18px 44px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 52ch;
}

/* ---------- 按钮组 ---------- */
.page-products .pg-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 640px) {
  .page-products .pg-duo {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-products .pg-hero__readout span + span::before {
    margin: 0 18px;
  }
}

@media (min-width: 768px) {
  .page-products .pg-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 40px;
  }

  .page-products .pg-diagram {
    padding: 26px 28px;
  }
}

@media (min-width: 900px) {
  .page-products .pg-track {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    border-left: 0;
    border-top: 1px solid var(--grid);
  }

  .page-products .pg-node {
    padding: 30px 22px 0 0;
  }

  .page-products .pg-node:last-child {
    padding-bottom: 0;
  }

  .page-products .pg-node::before {
    left: 0;
    top: -5px;
  }

  .page-products .pg-sec .pg-node__txt {
    max-width: none;
  }
}

@media (min-width: 1024px) {
  .page-products .pg-layout {
    grid-template-columns: var(--pg-rail) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-products .pg-rail {
    position: sticky;
    top: calc(var(--head-h) + 24px);
    align-self: start;
    border-top: 1px solid var(--grid);
    padding-top: 20px;
    margin-bottom: 0;
  }

  .page-products .pg-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-products .pg-rail__link {
    padding: 10px 0 10px 12px;
    border-bottom: 0;
    border-left: 1px solid transparent;
  }

  .page-products .pg-rail__link:hover,
  .page-products .pg-rail__link[aria-current] {
    border-bottom-color: transparent;
    border-left-color: var(--gold);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pg-rail__link,
  .page-products .pg-step summary,
  .page-products .pg-annot summary {
    transition: none;
  }
}
<<<END>>>