.page-products {
  background: var(--white);
  color: var(--ink);
}

.page-products .pd-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gut);
}

.page-products .breadcrumb {
  padding: 26px 0 0;
}

/* ---------- 首屏 ---------- */

.page-products .pd-intro {
  padding: 28px 0 48px;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-products .pd-kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--blue);
  flex: none;
}

.page-products h1 {
  margin: 0;
  font-size: clamp(30px, 5.4vw, 62px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.page-products .pd-lead {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.75;
  color: var(--gray);
}

.page-products .pd-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 36px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-stat {
  background: var(--white);
  padding: 18px 16px 20px;
}

.page-products .pd-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-products .pd-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--gray);
}

/* ---------- 主布局 ---------- */

.page-products .pd-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "tree"
    "content";
  gap: 34px;
  padding: 44px 0 96px;
}

.page-products .pd-aside {
  grid-area: tree;
}

.page-products .pd-content {
  grid-area: content;
  min-width: 0;
}

/* ---------- 目录树 ---------- */

.page-products .pd-tree {
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow-s);
}

.page-products .pd-tree-head {
  margin: 0;
  padding: 12px 16px;
  background: var(--snow);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy-mid);
}

.page-products .pd-tree-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .pd-tree-item {
  flex: 0 0 auto;
}

.page-products .pd-tree-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px;
  border-right: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
}

.page-products .pd-tree-link:hover,
.page-products .pd-tree-link:focus-visible {
  background: var(--snow);
  color: var(--blue);
  box-shadow: inset 0 -2px 0 var(--orange);
}

.page-products .pd-tree-no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-products .pd-aside-card {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--snow), var(--white) 70%);
}

.page-products .pd-aside-card-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
}

.page-products .pd-aside-card-body {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 章节 ---------- */

.page-products .pd-section {
  padding: 0 0 72px;
  margin-bottom: 72px;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-section:last-of-type {
  margin-bottom: 0;
}

.page-products .pd-head {
  margin-bottom: 28px;
}

.page-products .section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-products .section-title {
  margin: 12px 0 0;
  font-size: clamp(23px, 2.9vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 26ch;
}

.page-products .section-note {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 媒体框 ---------- */

.page-products .pd-figure {
  margin: 0 0 32px;
  border: 1px solid var(--line);
  background: var(--white);
}

.page-products .pd-figure--dark {
  background: var(--navy);
  border-color: var(--navy-mid);
}

.page-products .pd-figure--dark .media-frame-caption {
  color: var(--mist);
}

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

/* ---------- 三层结构 ---------- */

.page-products .pd-layers {
  display: grid;
  gap: 16px;
}

.page-products .pd-layer {
  padding: 22px 22px 24px 26px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  background: linear-gradient(140deg, var(--white), var(--snow) 92%);
  box-shadow: var(--shadow-s);
}

.page-products .pd-layer:nth-child(2) {
  border-left-color: var(--mist);
}

.page-products .pd-layer:nth-child(3) {
  border-left-color: var(--orange);
}

.page-products .pd-layer-no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-products .pd-layer h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--navy);
}

.page-products .pd-layer p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
  max-width: 58ch;
}

/* ---------- 筛选与大项列表 ---------- */

.page-products .pd-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 0 0 20px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--snow);
}

.page-products .pd-filter-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--navy-mid);
}

.page-products .pd-filter .filter-input {
  flex: 1 1 220px;
  min-width: 0;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
}

.page-products .pd-filter .filter-input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: inset 0 0 0 1px var(--blue);
}

.page-products .pd-filter-count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-products .pd-major-list {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-major-item {
  padding: 14px 16px;
  background: var(--white);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-products .pd-major-item::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--blue);
}

.page-products .pd-major-item.is-hidden,
.page-products .pd-major-item[hidden] {
  display: none;
}

/* ---------- 分组说明 ---------- */

.page-products .pd-group-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-group {
  padding: 22px 20px 24px;
  background: var(--white);
}

.page-products .pd-group h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--mist);
  display: inline-block;
}

.page-products .pd-group p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 同步 ---------- */

.page-products .pd-sync-grid {
  display: grid;
  gap: 16px;
}

.page-products .pd-sync-card {
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow-s);
}

.page-products .pd-sync-no {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.page-products .pd-sync-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
}

.page-products .pd-sync-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 移动端 ---------- */

.page-products .pd-mobile {
  display: grid;
  gap: 24px;
}

.page-products .pd-mobile-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--navy);
}

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

.page-products .pd-mobile-figure .media-frame-caption {
  color: var(--mist);
}

.page-products .pd-mobile-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-mobile-step {
  padding: 20px 20px 22px;
  background: var(--white);
}

.page-products .pd-mobile-no {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--blue);
}

.page-products .pd-mobile-step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
}

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

/* ---------- 旧版本 ---------- */

.page-products .pd-legacy {
  display: grid;
  gap: 24px;
}

.page-products .pd-legacy-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--navy);
}

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

.page-products .pd-legacy-figure .media-frame-caption {
  color: var(--mist);
}

.page-products .pd-legacy-body p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
  max-width: 60ch;
}

.page-products .pd-version-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .pd-version-item {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-version-no {
  flex: none;
  min-width: 62px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

.page-products .pd-version-desc {
  flex: 1 1 220px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 流程 ---------- */

.page-products .pd-section--flow .section-head {
  margin-bottom: 36px;
}

.page-products .pd-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-left: 1px solid var(--line);
}

.page-products .pd-step {
  position: relative;
  padding: 0 0 32px 26px;
}

.page-products .pd-step:last-child {
  padding-bottom: 0;
}

.page-products .pd-step::before {
  content: "";
  position: absolute;
  left: -3.5px;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

.page-products .pd-step-no {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--blue);
}

.page-products .pd-step h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
}

.page-products .pd-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
  max-width: 56ch;
}

/* ---------- 延伸入口 ---------- */

.page-products .pd-next {
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.page-products .pd-next-kicker {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-products .pd-next-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-next-card {
  display: block;
  padding: 22px 20px 24px;
  background: var(--white);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 160ms ease-out, background-color 160ms ease-out;
}

.page-products .pd-next-card:hover,
.page-products .pd-next-card:focus-visible {
  background: var(--snow);
  box-shadow: inset 0 0 0 2px var(--orange);
  outline: none;
}

.page-products .pd-next-no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--blue);
}

.page-products .pd-next-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
}

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

.page-products .pd-next-card .link-more {
  font-size: 13px;
  color: var(--orange);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-products .pd-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 860px) {
  .page-products .pd-sync-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .pd-mobile {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-products .pd-legacy {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
    gap: 32px;
  }

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

  .page-products .pd-layers {
    gap: 0;
  }

  .page-products .pd-layer + .pd-layer {
    margin-top: -1px;
  }
}

@media (min-width: 1024px) {
  .page-products .pd-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    grid-template-areas: "content tree";
    column-gap: 56px;
    row-gap: 0;
    align-items: start;
  }

  .page-products .pd-aside {
    position: sticky;
    top: 32px;
  }

  .page-products .pd-tree-list {
    display: block;
    overflow: visible;
  }

  .page-products .pd-tree-item {
    flex: none;
  }

  .page-products .pd-tree-link {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    white-space: normal;
    padding: 12px 16px;
  }

  .page-products .pd-tree-item:last-child .pd-tree-link {
    border-bottom: 0;
  }

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

  .page-products .pd-layer {
    padding: 26px 28px 28px 32px;
  }

  .page-products .pd-layer:nth-child(2) {
    margin-left: 28px;
  }

  .page-products .pd-layer:nth-child(3) {
    margin-left: 56px;
  }
}

@media (min-width: 1240px) {
  .page-products h1 {
    font-size: 62px;
  }

  .page-products .pd-intro {
    padding: 40px 0 64px;
  }

  .page-products .pd-body {
    column-gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-next-card {
    transition: none;
  }
}