.page-products {
  --pd-glass: rgba(22, 35, 58, .62);
  --pd-cyan-soft: rgba(53, 230, 210, .14);
  --pd-orange-soft: rgba(255, 122, 47, .18);
  --pd-rhythm: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ===== 首屏 ===== */
.page-products .pd-hero {
  position: relative;
  padding-top: clamp(14px, 3vw, 30px);
  overflow: hidden;
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(600px, 78vw);
  height: min(600px, 78vw);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, var(--pd-cyan-soft), transparent 64%);
  pointer-events: none;
}

.page-products .pd-hero__grid {
  position: relative;
  align-items: start;
  gap: clamp(24px, 4vw, 52px);
}

.page-products .pd-hero__title {
  margin: 14px 0 20px;
  font-size: clamp(1.85rem, 5.4vw, 3.35rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--text);
  max-width: 18ch;
  position: relative;
  padding-bottom: 16px;
}

.page-products .pd-hero__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(220px, 46%);
  height: 4px;
  background: var(--pulse);
  border-radius: 2px;
}

.page-products .pd-hero__lead {
  max-width: 60ch;
  color: var(--muted);
}

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

/* ===== 索引卡 ===== */
.page-products .pd-index {
  position: relative;
  padding: 22px 20px 16px;
  background: var(--pd-glass);
  border: 1px solid var(--line);
  border-radius: var(--rad);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
}

.page-products .pd-index::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--pulse);
}

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

.page-products .pd-index__title {
  margin: 8px 0 14px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-products .pd-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pd-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-products .pd-index__link:hover,
.page-products .pd-index__link:focus-visible {
  color: var(--cyan);
  padding-left: 8px;
}

.page-products .pd-index__no {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .06em;
}

/* ===== 总览图 ===== */
.page-products .pd-overview {
  margin: clamp(26px, 4vw, 46px) 0 0;
}

/* ===== 章节骨架 ===== */
.page-products .pd-cap {
  padding-top: var(--pd-rhythm);
}

.page-products .pd-cap__grid {
  gap: clamp(22px, 3.5vw, 44px);
  align-items: start;
}

.page-products .pd-cap__body {
  margin: 0;
}

.page-products .pd-cap__body p + p {
  margin-top: 1.1em;
}

.page-products .pd-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 16px 18px;
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(53, 230, 210, .08), transparent 72%);
  color: var(--text);
  font-size: 15px;
  line-height: 1.75;
}

.page-products .pd-side-note {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
}

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

.page-products .pd-side-note__key {
  display: block;
  margin-bottom: 8px !important;
  color: var(--cyan) !important;
  font-size: 12px !important;
  letter-spacing: .1em;
}

.page-products .pd-anchor {
  position: relative;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding-left: 24px;
}

.page-products .pd-anchor::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--pd-cyan-soft);
  transform: translateY(-50%);
}

/* ===== 01 两个入口 ===== */
.page-products .pd-entrances {
  display: grid;
  gap: 14px;
}

.page-products .pd-entrance {
  position: relative;
  padding: 20px 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
}

.page-products .pd-entrance--w {
  background: var(--glass);
}

.page-products .pd-entrance__tag {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 9px;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
  border: 1px solid rgba(53, 230, 210, .34);
  border-radius: 999px;
}

.page-products .pd-entrance--w .pd-entrance__tag {
  color: var(--orange);
  border-color: rgba(255, 122, 47, .38);
}

.page-products .pd-entrance__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

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

/* ===== 02 检索步骤 ===== */
.page-products .pd-steps {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .pd-step {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-products .pd-step:hover {
  border-color: rgba(53, 230, 210, .42);
  transform: translateY(-3px);
}

.page-products .pd-step__no {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-products .pd-step__title {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-products .pd-step__code {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--orange);
  background: var(--pd-orange-soft);
  border-radius: 999px;
}

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

.page-products .pd-flow {
  margin: clamp(24px, 3.6vw, 40px) 0 0;
}

/* ===== 03 版本对比 ===== */
.page-products .pd-diff {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-products .pd-diff__col {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
}

.page-products .pd-diff__col--new {
  background: var(--glass);
  border-color: rgba(53, 230, 210, .3);
}

.page-products .pd-diff__ver {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-products .pd-diff__col--new .pd-diff__ver {
  color: var(--cyan);
}

.page-products .pd-diff__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pd-diff__list li {
  display: grid;
  gap: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-products .pd-diff__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pd-diff__key {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-products .pd-diff__hit {
  color: var(--text);
  border-left: 2px solid var(--orange);
  padding-left: 10px;
}

.page-products .pd-diff__mark {
  display: none;
}

.page-products .pd-compare-fig {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

/* ===== 04 资料 ===== */
.page-products .pd-doc-types {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .pd-doc {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
  border-top: 2px solid rgba(53, 230, 210, .5);
}

.page-products .pd-doc__no {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-products .pd-doc__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

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

.page-products .pd-doc-fig {
  margin: 0;
}

.page-products .pd-format-grid {
  gap: 16px;
  margin-top: clamp(22px, 3.2vw, 36px);
}

.page-products .pd-format {
  padding: 20px;
}

.page-products .pd-format .card__no {
  color: var(--orange);
}

.page-products .pd-export {
  margin-top: clamp(22px, 3.2vw, 36px);
  padding: 22px 20px;
  border: 1px dashed var(--line);
  border-radius: var(--rad);
  background: linear-gradient(140deg, rgba(53, 230, 210, .06), transparent 60%);
}

.page-products .pd-export__title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-products .pd-export__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pd-export__list li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pd-export__list .mono {
  color: var(--cyan);
  margin-right: 6px;
}

/* ===== 05 订阅组 ===== */
.page-products .pd-groups {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3.4vw, 36px);
}

.page-products .pd-group {
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
  padding: 4px 20px;
}

.page-products .pd-group .group__head {
  padding: 16px 0;
}

.page-products .pd-group .group__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.page-products .pd-group .group__toggle {
  font-size: 13px;
  color: var(--cyan);
}

.page-products .pd-group .group__body p {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 68ch;
}

/* ===== 06 适配表 ===== */
.page-products .pd-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
  -webkit-overflow-scrolling: touch;
}

.page-products .pd-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pd-table__cap {
  text-align: left;
  padding: 14px 16px 10px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-products .pd-table th,
.page-products .pd-table td {
  padding: 14px 16px;
  text-align: left;
  border-top: 1px solid var(--line);
  vertical-align: top;
}

.page-products .pd-table thead th {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

.page-products .pd-table tbody th {
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}

.page-products .pd-table tbody td {
  color: var(--muted);
  line-height: 1.7;
}

.page-products .pd-fit-fig {
  margin: 0;
}

.page-products .pd-fit-notes {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 3.2vw, 34px);
}

.page-products .pd-fit-notes p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  padding-left: 34px;
  position: relative;
}

.page-products .pd-fit-notes .mono {
  position: absolute;
  left: 0;
  top: 3px;
  font-size: 12px;
  color: var(--cyan);
}

/* ===== 结尾 ===== */
.page-products .pd-cta {
  padding-top: clamp(38px, 6vw, 72px);
}

.page-products .pd-cta__panel {
  position: relative;
  padding: clamp(26px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--rad);
  background: var(--hull);
  overflow: hidden;
}

.page-products .pd-cta__panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--pulse);
}

.page-products .pd-cta__panel::after {
  content: "";
  position: absolute;
  bottom: -40%;
  right: -12%;
  width: min(420px, 70vw);
  height: min(420px, 70vw);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(76, 139, 255, .16), transparent 66%);
  pointer-events: none;
}

.page-products .pd-cta__eyebrow {
  position: relative;
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-products .pd-cta__title {
  position: relative;
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 3.6vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
  line-height: 1.24;
}

.page-products .pd-cta__text {
  position: relative;
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .pd-cta__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .page-products .pd-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-products .pd-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 46px;
    right: -14px;
    width: 12px;
    height: 2px;
    background: var(--pulse);
  }

  .page-products .pd-diff {
    grid-template-columns: 1fr 46px 1fr;
    align-items: stretch;
    gap: 0;
  }

  .page-products .pd-diff__mark {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
    position: relative;
    padding: 34px 0;
  }

  .page-products .pd-diff__mark::before {
    content: "";
    position: absolute;
    top: 12px;
    bottom: 12px;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--line) 18%, var(--line) 82%, transparent);
  }

  .page-products .pd-diff__dot {
    position: relative;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--orange);
    box-shadow: 0 0 0 4px var(--pd-orange-soft);
  }

  .page-products .pd-doc-types {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-products .pd-doc:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .page-products .pd-cap {
    position: relative;
    padding-left: clamp(24px, 3.4vw, 48px);
    margin-left: clamp(4px, 1vw, 14px);
    border-left: 1px solid var(--line);
  }

  .page-products .pd-cap::before {
    content: "";
    position: absolute;
    left: -1px;
    top: var(--pd-rhythm);
    width: 2px;
    height: 76px;
    background: var(--pulse);
    border-radius: 1px;
  }

  .page-products .pd-entrance--w {
    transform: translate(-30px, -20px);
  }

  .page-products .pd-entrances {
    padding-bottom: 20px;
  }

  .page-products .pd-doc-types {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .pd-doc:first-child {
    grid-column: auto;
  }

  .page-products .pd-fit-notes {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-index__link,
  .page-products .pd-step {
    transition: none;
  }

  .page-products .pd-step:hover {
    transform: none;
  }
}
```