.page-products {
  --pd-gap: clamp(48px, 6vw, 80px);
  --pd-panel-pad: clamp(24px, 3.4vw, 46px);
  background: var(--paper);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper-white);
  padding: clamp(36px, 6vw, 76px) 0 clamp(40px, 6vw, 78px);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  top: -25%;
  right: -12%;
  width: min(620px, 78vw);
  height: min(620px, 78vw);
  background: linear-gradient(140deg, rgba(217, 164, 65, 0.26), rgba(217, 164, 65, 0));
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  pointer-events: none;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(217, 164, 65, 0.1) 62%, transparent 100%);
  pointer-events: none;
}

.page-products .pd-hero .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-products .pd-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  align-items: end;
}

.page-products .pd-hero-copy h1 {
  font-size: clamp(30px, 6.4vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper-white);
  margin: 10px 0 18px;
  max-width: 17em;
}

.page-products .pd-hero-copy .kicker {
  color: var(--gold-bright);
}

.page-products .pd-hero-copy .lead {
  color: var(--on-ink);
  max-width: 40em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
}

.page-products .pd-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .pd-hero-mark {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 6px;
}

.page-products .pd-hero-ver {
  font-family: var(--font-mono);
  font-size: clamp(64px, 15vw, 150px);
  line-height: 0.82;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 2px var(--gold);
  display: block;
}

.page-products .pd-hero-ver-note {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold-bright);
  white-space: nowrap;
}

.page-products .pd-hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 22px;
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--line-dark);
}

.page-products .pd-hero-stats dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--on-ink-soft);
  margin-bottom: 6px;
}

.page-products .pd-hero-stats dd {
  margin: 0;
  font-size: 17px;
  color: var(--paper-white);
}

.page-products .pd-hero-stats .mono {
  font-size: 30px;
  line-height: 1;
  color: var(--gold);
  margin-right: 4px;
}

/* ---------- 主体骨架：左索引 + 右内容 ---------- */
.page-products .pd-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  padding-top: clamp(40px, 5vw, 72px);
  padding-bottom: clamp(48px, 6vw, 88px);
}

.page-products .pd-index {
  border-top: 2px solid var(--gold);
  padding-top: 14px;
}

.page-products .pd-index-title {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--grey);
  margin: 0 0 10px;
}

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

.page-products .pd-index-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border-bottom: 2px solid var(--line);
  color: var(--text-soft);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-products .pd-index-list a .mono {
  font-size: 12px;
  color: var(--gold-deep);
  letter-spacing: 0.08em;
}

.page-products .pd-index-list a:hover,
.page-products .pd-index-list a:focus-visible {
  color: var(--text);
  border-color: var(--gold);
  background: rgba(217, 164, 65, 0.08);
}

.page-products .pd-main {
  display: grid;
  gap: var(--pd-gap);
  min-width: 0;
}

.page-products .pd-block {
  min-width: 0;
}

/* ---------- 章节头 ---------- */
.page-products .pd-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 2vw, 26px);
  margin-bottom: clamp(20px, 2.6vw, 32px);
}

.page-products .pd-head .section-index {
  flex: none;
  line-height: 0.9;
}

.page-products .pd-head h2 {
  font-size: clamp(25px, 3.4vw, 36px);
  line-height: 1.2;
  color: var(--text);
  margin: 6px 0 0;
}

.page-products .pd-head .kicker {
  color: var(--gold-deep);
}

.page-products .pd-sub {
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
  max-width: 40em;
}

/* ---------- 图片容器 ---------- */
.page-products .pd-media {
  margin: 0 0 clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  background: var(--paper-white);
}

.page-products .pd-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-products .media-caption {
  display: block;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--grey);
  border-top: 1px solid var(--line);
}

/* ---------- 01 服务清单 ---------- */
.page-products .pd-svc-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-products .pd-svc {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 20px 18px;
  border-top: 2px solid var(--gold);
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-products .pd-svc:hover {
  transform: translateY(-3px);
  border-top-color: var(--gold-bright);
  box-shadow: 0 16px 38px rgba(13, 12, 10, 0.14);
}

.page-products .pd-svc-no {
  font-size: 30px;
  line-height: 1;
  color: var(--gold-deep);
  letter-spacing: -0.03em;
  display: block;
}

.page-products .pd-svc h3 {
  font-size: 18px;
  line-height: 1.35;
  color: var(--text);
  margin: 0;
}

.page-products .pd-svc > p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-products .pd-svc-entry {
  font-size: 13px;
  color: var(--grey);
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  margin-top: auto;
}

.page-products .pd-svc-entry .mono {
  display: inline-block;
  margin-right: 8px;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}

.page-products .pd-svc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
}

/* ---------- 02 深色面板 ---------- */
.page-products .pd-dark-panel {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  background-image: linear-gradient(200deg, rgba(217, 164, 65, 0.1), rgba(217, 164, 65, 0) 56%);
  color: var(--paper-white);
  padding: var(--pd-panel-pad);
}

.page-products .pd-dark-panel::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -70px;
  width: 250px;
  height: 250px;
  background: var(--glass);
  border: 1px solid var(--line-dark);
  transform: rotate(14deg);
  pointer-events: none;
}

.page-products .pd-dark-panel > * {
  position: relative;
  z-index: 1;
}

.page-products .pd-dark-panel h2 {
  color: var(--paper-white);
}

.page-products .pd-kicker-dark {
  color: var(--gold-bright) !important;
}

.page-products .pd-sub-dark {
  color: var(--on-ink);
}

.page-products .pd-media--dark {
  border-color: var(--line-dark);
  background: rgba(251, 247, 241, 0.04);
}

.page-products .pd-caption-dark {
  color: var(--on-ink-soft);
  border-top-color: var(--line-dark);
}

.page-products .pd-table {
  display: grid;
  border-top: 1px solid var(--line-dark);
}

.page-products .pd-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .pd-row--head {
  padding: 10px 0;
}

.page-products .pd-row--head span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-products .pd-cell-key {
  color: var(--paper-white);
  font-weight: 600;
}

.page-products .pd-cell-old {
  color: var(--on-ink-soft);
}

.page-products .pd-cell-new {
  color: var(--paper-white);
  position: relative;
  padding-left: 16px;
}

.page-products .pd-cell-new::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jade);
}

.page-products .pd-note-dark {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--on-ink-soft);
  padding-top: 16px;
  border-top: 1px dashed var(--line-dark);
  max-width: 46em;
}

/* ---------- 03 资源分类 ---------- */
.page-products .pd-cat-tabs {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
}

.page-products .pd-cat-tabs a {
  text-decoration: none;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-products .pd-cat-tabs a:hover,
.page-products .pd-cat-tabs a:focus-visible {
  background: var(--ink);
  color: var(--gold-bright);
  border-color: var(--ink);
}

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

.page-products .pd-cat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px;
  border-left: 3px solid var(--line);
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-products .pd-cat:target,
.page-products .pd-cat:hover {
  border-left-color: var(--gold);
  box-shadow: 0 14px 34px rgba(13, 12, 10, 0.11);
  transform: translateY(-2px);
}

.page-products .pd-cat-icon {
  color: var(--gold-deep);
  margin-bottom: 4px;
}

.page-products .pd-cat-dim {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--grey);
  margin: 0;
}

.page-products .pd-cat h3 {
  font-size: 18px;
  color: var(--text);
  margin: 0;
}

.page-products .pd-cat p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 04 步骤 ---------- */
.page-products .pd-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pd-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  background: var(--paper-white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  transition: background-color 0.24s var(--ease), border-left-color 0.24s var(--ease);
}

.page-products .pd-step:hover {
  background: #fff;
  border-left-color: var(--gold-bright);
}

.page-products .pd-step-no {
  font-size: 24px;
  line-height: 1.1;
  color: var(--gold-deep);
  letter-spacing: -0.02em;
}

.page-products .pd-step h3 {
  font-size: 17px;
  color: var(--text);
  margin: 0 0 6px;
}

.page-products .pd-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 05 入口差异 ---------- */
.page-products .pd-diff {
  display: grid;
  gap: 12px;
}

.page-products .pd-diff-item {
  background: var(--paper-white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--jade);
  padding: 18px 20px;
}

.page-products .pd-diff-item h3 {
  font-size: 17px;
  color: var(--text);
  margin: 0;
}

.page-products .pd-diff-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.page-products .pd-diff-pair p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-products .pd-diff-pair .tag {
  margin-right: 8px;
}

.page-products .pd-diff-note {
  margin: 16px 0 0;
}

/* ---------- 06 折叠处理顺序 ---------- */
.page-products .pd-acc {
  display: grid;
  gap: 10px;
}

.page-products .pd-acc .collapse {
  background: var(--paper-white);
  border: 1px solid var(--line);
}

.page-products .pd-acc .collapse-trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 20px;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  color: var(--text);
  transition: background-color 0.22s var(--ease);
}

.page-products .pd-acc .collapse-trigger:hover {
  background: rgba(217, 164, 65, 0.09);
}

.page-products .pd-acc-no {
  font-size: 15px;
  color: var(--gold-deep);
  letter-spacing: 0.08em;
  flex: none;
}

.page-products .pd-acc-title {
  flex: 1 1 auto;
  font-weight: 600;
}

.page-products .pd-acc .collapse-panel {
  padding: 0 20px 18px 20px;
}

.page-products .pd-fix-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.page-products .pd-fix-list li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 延伸阅读 ---------- */
.page-products .pd-next {
  border-top: 2px solid var(--gold);
  padding-top: 22px;
}

.page-products .pd-next-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-products .pd-next-list a {
  display: block;
  padding: 12px 16px;
  background: var(--paper-white);
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease), padding-left 0.22s var(--ease);
}

.page-products .pd-next-list a:hover,
.page-products .pd-next-list a:focus-visible {
  border-color: var(--gold);
  color: var(--gold-deep);
  padding-left: 22px;
}

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

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

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

  .page-products .pd-diff-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .pd-row {
    grid-template-columns: 0.85fr 1fr 1.25fr;
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-products .pd-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(180px, 0.6fr);
    gap: clamp(30px, 4vw, 60px);
  }

  .page-products .pd-hero-mark {
    justify-content: flex-end;
  }

  .page-products .pd-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pd-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-products .pd-index-list {
    display: block;
    overflow: visible;
    padding: 0;
    gap: 0;
  }

  .page-products .pd-index-list li + li {
    margin-top: 2px;
  }

  .page-products .pd-index-list a {
    border-bottom: 0;
    border-left: 2px solid var(--line);
    padding: 10px 12px;
  }

  .page-products .pd-index-list a:hover,
  .page-products .pd-index-list a:focus-visible {
    border-left-color: var(--gold);
  }

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

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

@media (min-width: 1180px) {
  .page-products .pd-main {
    gap: clamp(64px, 6vw, 96px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-svc,
  .page-products .pd-cat,
  .page-products .pd-step,
  .page-products .pd-next-list a {
    transition: none;
  }

  .page-products .pd-svc:hover,
  .page-products .pd-cat:hover,
  .page-products .pd-cat:target {
    transform: none;
  }
}