.page-products {
  --pp-line: var(--rule);
  --pp-space: clamp(2rem, 4vw, 3.25rem);
  --pp-soft: rgba(169, 203, 224, 0.18);
  background: var(--snow-50);
  color: var(--ink-900);
  font-family: var(--font-sans);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-products .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-products .prose {
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--slate);
  max-width: 38em;
}

.page-products .prose a {
  color: var(--blue-600);
  text-decoration-color: var(--blue-300);
  text-underline-offset: 3px;
}

.page-products .prose a:hover,
.page-products .prose a:focus-visible {
  color: var(--maple-dark);
}

/* ---------- 首屏 ---------- */
.page-products .ph {
  display: grid;
  gap: 1.75rem;
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2.5rem, 5vw, 4rem);
}

.page-products .ph h1 {
  margin: 0.5rem 0 0;
  font-size: var(--fs-56);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  max-width: 15em;
}

.page-products .ph .lede {
  margin: 1.1rem 0 0;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--slate);
  max-width: 34em;
}

.page-products .ph__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.6rem 0 0;
}

.page-products .rhythm {
  background: var(--ink-900);
  color: var(--paper);
  border-radius: var(--radius);
  border-top: 3px solid var(--maple);
  padding: 1.35rem 1.25rem 1rem;
}

.page-products .rhythm__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-latin);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-300);
}

.page-products .rhythm dl {
  margin: 0;
}

.page-products .rhythm__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.2rem 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  font-size: var(--fs-15);
}

.page-products .rhythm__row:last-child {
  border-bottom: 0;
  padding-bottom: 0.3rem;
}

.page-products .rhythm__row dt {
  color: rgba(255, 255, 255, 0.72);
}

.page-products .rhythm__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  white-space: nowrap;
}

/* ---------- 索引 + 详情双栏 ---------- */
.page-products .svc-layout {
  display: grid;
  gap: 1.25rem;
}

.page-products .svc-index {
  padding: 0.75rem 0;
  border-top: 1px solid var(--mist);
  border-bottom: 1px solid var(--mist);
}

.page-products .svc-index__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-latin);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-products .svc-index__list {
  display: flex;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .svc-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.7rem;
  border-left: 2px solid transparent;
  color: var(--slate);
  font-size: var(--fs-15);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .svc-index__link .mono {
  font-size: var(--fs-13);
  color: var(--blue-600);
}

.page-products .svc-index__link:hover,
.page-products .svc-index__link:focus-visible {
  border-left-color: var(--maple);
  background: var(--paper);
  color: var(--ink-900);
}

/* ---------- 章节 ---------- */
.page-products .section {
  padding-block: var(--pp-space);
}

.page-products .section:first-child {
  padding-top: 0.5rem;
}

.page-products .section + .section {
  border-top: 1px solid var(--mist);
}

.page-products .section__title {
  margin: 0.35rem 0 0;
  font-size: var(--fs-32);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  max-width: 22em;
}

.page-products .section__head + .prose {
  margin-top: 0.9rem;
}

/* ---------- 示意图容器 ---------- */
.page-products .shot {
  margin: 1.5rem 0 0;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, var(--pp-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--pp-soft) 1px, transparent 1px);
  background-size: 32px 32px;
  overflow: hidden;
}

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

.page-products .shot--tablet {
  margin-top: 1.5rem;
  border: 8px solid var(--ink-800);
  border-radius: 14px;
  background-color: var(--snow-50);
}

/* ---------- 表格 ---------- */
.page-products .table-frame {
  margin-top: 1.75rem;
}

.page-products .data-table caption {
  caption-side: top;
  text-align: left;
  padding: 0 0 0.85rem;
  font-size: var(--fs-15);
  font-weight: 500;
  color: var(--slate);
}

.page-products .data-table th,
.page-products .data-table td {
  font-size: var(--fs-15);
  line-height: 1.55;
}

.page-products .data-table tbody th[scope="row"] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--blue-600);
  font-weight: 500;
  white-space: nowrap;
}

.page-products .data-table thead th:nth-child(4),
.page-products .data-table tbody td:nth-child(4) {
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ---------- 分步 ---------- */
.page-products .steps {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-products .step {
  height: 100%;
  background: var(--paper);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease);
}

.page-products .step[open] {
  border-color: var(--blue-300);
}

.page-products .step__summary {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--ink-800);
}

.page-products .step__summary::-webkit-details-marker {
  display: none;
}

.page-products .step__summary::marker {
  content: "";
}

.page-products .step__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--blue-600);
}

.page-products .step[open] .step__summary::after {
  content: "\2212";
}

.page-products .step__summary:focus-visible {
  outline: 2px solid var(--blue-600);
  outline-offset: -2px;
}

.page-products .step__no {
  font-size: var(--fs-13);
  color: var(--maple);
  font-weight: 500;
}

.page-products .step__body {
  padding: 0 1rem 1rem;
  font-size: var(--fs-15);
  line-height: 1.7;
  color: var(--slate);
}

.page-products .step__body p {
  margin: 0 0 0.6rem;
}

.page-products .step__body p:last-child {
  margin-bottom: 0;
}

.page-products .step__note {
  padding-left: 0.6rem;
  border-left: 2px solid var(--maple);
  color: var(--ink-800);
}

.page-products .footnote {
  margin: 1rem 0 0;
  padding-left: 0.75rem;
  border-left: 2px solid var(--mist);
  font-size: var(--fs-15);
  line-height: 1.65;
  color: var(--slate);
}

/* ---------- 评测指标卡 ---------- */
.page-products .spec-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.page-products .spec {
  background: var(--paper);
  border: 1px solid var(--mist);
  border-top: 3px solid var(--ink-800);
  border-radius: var(--radius);
  padding: 1.1rem 1.05rem 1.15rem;
}

.page-products .spec h3 {
  margin: 0 0 0.6rem;
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-products .spec dl {
  margin: 0;
}

.page-products .spec__row {
  padding: 0.65rem 0;
  border-top: 1px solid var(--mist);
}

.page-products .spec__row dt {
  font-size: var(--fs-15);
  font-weight: 700;
  color: var(--ink-800);
}

.page-products .spec__row dd {
  margin: 0.2rem 0 0;
  font-size: var(--fs-15);
  line-height: 1.6;
  color: var(--slate);
}

.page-products .brief {
  margin-top: 1.75rem;
  padding: 1.25rem 1.3rem 1.35rem;
  background: var(--paper);
  border: 1px solid var(--mist);
  border-left: 3px solid var(--blue-600);
  border-radius: var(--radius);
}

.page-products .brief h3 {
  margin: 0 0 0.5rem;
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--ink-900);
}

.page-products .brief p {
  margin: 0 0 1rem;
  font-size: var(--fs-15);
  line-height: 1.75;
  color: var(--slate);
  max-width: 42em;
}

/* ---------- 图文分栏 ---------- */
.page-products .split {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.page-products .split .shot {
  margin-top: 0;
}

.page-products .split__body .prose {
  margin: 0 0 0.9rem;
}

.page-products .split__body .prose:first-child {
  margin-top: 0;
}

.page-products .facts {
  list-style: none;
  margin: 1.25rem 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-products .facts li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: baseline;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--mist);
}

.page-products .facts__num {
  font-size: var(--fs-32);
  line-height: 1;
  color: var(--ink-800);
  font-weight: 500;
}

.page-products .facts__txt {
  font-size: var(--fs-15);
  line-height: 1.65;
  color: var(--slate);
}

/* ---------- 四步流程 ---------- */
.page-products .flow {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-products .flow__node {
  position: relative;
  padding-left: 3.4rem;
  min-height: 2.5rem;
}

.page-products .flow__no {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--blue-300);
  color: var(--maple);
  font-size: var(--fs-13);
  font-weight: 500;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-products .flow__node:hover .flow__no,
.page-products .flow__node:focus-within .flow__no,
.page-products .flow__node:focus .flow__no {
  background: var(--maple);
  border-color: var(--maple);
  color: var(--paper);
}

.page-products .flow__node:focus {
  outline: none;
}

.page-products .flow__node:focus-visible {
  outline: 2px solid var(--blue-600);
  outline-offset: 4px;
}

.page-products .flow__name {
  display: block;
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--ink-900);
}

.page-products .flow__txt {
  margin: 0.25rem 0 0;
  font-size: var(--fs-15);
  line-height: 1.65;
  color: var(--slate);
}

.page-products #svc-assist .prose {
  margin-bottom: 0.5rem;
}

.page-products #svc-assist .shot + .prose {
  margin-top: 1.5rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 48em) {
  .page-products .spec-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .page-products .steps {
    gap: 1rem;
  }
}

@media (min-width: 52em) {
  .page-products .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
}

@media (min-width: 56em) {
  .page-products .split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-products .split--rev {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .flow {
    position: relative;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
  }

  .page-products .flow::before {
    content: "";
    position: absolute;
    top: 1.2rem;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--blue-300);
  }

  .page-products .flow__node {
    padding-left: 0;
    padding-top: 3.2rem;
  }

  .page-products .flow__no {
    top: 0;
    left: 0;
  }
}

@media (min-width: 62em) {
  .page-products .ph {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-products .rhythm {
    margin-top: 0.4rem;
  }

  .page-products .svc-layout {
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-products .svc-index {
    position: sticky;
    top: 6.5rem;
    align-self: start;
    padding: 0 0 0 1rem;
    border-top: 0;
    border-bottom: 0;
    border-left: 1px solid var(--mist);
  }

  .page-products .svc-index__list {
    flex-direction: column;
    overflow: visible;
  }

  .page-products .svc-index__link {
    width: 100%;
    padding: 0.5rem 0.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .svc-index__link,
  .page-products .flow__no,
  .page-products .step {
    transition: none;
  }
}
<<<END>>>