.page-products {
  --biz-gap: clamp(18px, 3vw, 34px);
}

.page-products .biz-head {
  padding: 18px 0 34px;
}

.page-products .biz-head h1 {
  margin: 12px 0 0;
  max-width: 24ch;
  font-family: var(--font-head);
  font-size: clamp(30px, 6.2vw, 58px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--gold-light);
}

.page-products .biz-head__lead {
  margin: 20px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .biz-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

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

/* 仪表板：左窄栏 + 右内容 */
.page-products .biz-board {
  display: grid;
  gap: 26px;
  padding: 26px 0 6px;
  border-top: 1px solid var(--hair-soft);
}

.page-products .biz-rail {
  border-left: 1px solid var(--hair-soft);
  padding-left: 16px;
}

.page-products .biz-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-products .biz-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .biz-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 13px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-pill);
  color: var(--silver);
  font-size: 13.5px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color .25s var(--ease), color .25s var(--ease), background .25s var(--ease);
}

.page-products .biz-rail__list a:hover,
.page-products .biz-rail__list a:focus-visible {
  border-color: var(--hair);
  background: var(--veil);
  color: var(--gold-light);
}

.page-products .biz-rail__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold-deep);
}

.page-products .biz-rail__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver);
}

/* 章节 */
.page-products .biz-sec {
  padding: 32px 0;
  border-top: 1px solid var(--hair-soft);
}

.page-products .biz-body > .biz-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-products .biz-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}

.page-products .biz-sec__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cinnabar);
}

.page-products .biz-sec h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--gold-light);
}

.page-products .biz-sec__text {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .biz-sec__text:last-of-type {
  margin-bottom: 20px;
}

/* 配图 */
.page-products .biz-figure {
  margin: 22px 0;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--umber);
}

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

.page-products .biz-figure figcaption {
  padding: 10px 18px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver);
  border-top: 1px solid var(--hair-soft);
}

.page-products .split__media .biz-figure {
  margin: 0;
}

/* 服务卡片 */
.page-products .svc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 4px;
}

.page-products .svc-card {
  background: var(--obsidian);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);
}

.page-products .svc-card:hover {
  border-color: var(--hair);
  box-shadow: 0 20px 44px -30px var(--shadow-gold);
  transform: translateY(-2px);
}

.page-products .svc-card summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.page-products .svc-card summary::-webkit-details-marker {
  display: none;
}

.page-products .svc-card summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--gold);
}

.page-products .svc-card[open] summary::after {
  content: "–";
  color: var(--cinnabar);
}

.page-products .svc-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--gold-light);
}

.page-products .svc-card__body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--hair-soft);
}

.page-products .svc-card__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--silver);
}

.page-products .svc-card__link {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
  padding-bottom: 2px;
}

.page-products .svc-card__link:hover,
.page-products .svc-card__link:focus-visible {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

/* 数据条 */
.page-products .biz-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
}

.page-products .biz-stats li {
  padding: 4px 0 4px 14px;
  border-left: 2px solid var(--hair);
}

.page-products .biz-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.4vw, 32px);
  letter-spacing: .02em;
  color: var(--gold);
}

.page-products .biz-stats__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver);
}

/* 图文分栏 */
.page-products .split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.page-products .split__text p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .biz-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-products .biz-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .biz-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 7px;
  height: 1px;
  background: var(--gold);
}

.page-products .biz-list strong {
  font-weight: 600;
  color: var(--gold-light);
}

/* 设备列表 */
.page-products .device-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .device-list li {
  display: grid;
  gap: 4px;
  padding: 13px 16px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-md);
  background: var(--obsidian);
}

.page-products .device-list__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-products .device-list__v {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

/* 流程 */
.page-products .flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-products .flow__step {
  position: relative;
  padding: 18px 18px 20px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--obsidian), var(--umber));
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-products .flow__step:hover,
.page-products .flow__step:focus-within {
  border-color: var(--hair);
  transform: translateY(-3px);
}

.page-products .flow__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--cinnabar);
}

.page-products .flow__step h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--gold-light);
}

.page-products .flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .flow-result {
  display: grid;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: var(--veil);
}

.page-products .flow-result__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .flow-result .btn {
  justify-self: start;
}

/* 合作场景 */
.page-products .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .partner-card {
  padding: 16px 18px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-md);
  background: var(--umber);
}

.page-products .partner-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--gold-light);
}

.page-products .partner-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .biz-cta {
  display: grid;
  gap: 16px;
  margin-top: 20px;
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair);
  background: linear-gradient(120deg, var(--obsidian), var(--umber));
}

.page-products .biz-cta p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

.page-products .biz-cta .btn {
  justify-self: start;
}

/* 回到顶部 */
.page-products .top-link-wrap {
  margin: 8px 0 0;
  padding: 26px 0 8px;
  border-top: 1px solid var(--hair-soft);
  text-align: right;
}

.page-products .top-link {
  display: inline-block;
  padding: 9px 18px;
  border: 1px solid var(--hair);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
  text-decoration: none;
  transition: background .25s var(--ease), color .25s var(--ease);
}

.page-products .top-link:hover,
.page-products .top-link:focus-visible {
  background: var(--veil);
  color: var(--gold-light);
}

/* 平板与桌面 */
@media (min-width: 620px) {
  .page-products .biz-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-products .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .flow__step:not(:last-child)::after {
    content: "›";
    position: absolute;
    top: 50%;
    right: -13px;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 18px;
    line-height: 1;
    color: var(--gold);
  }

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

@media (min-width: 860px) {
  .page-products .biz-board {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 44px;
    padding-top: 40px;
  }

  .page-products .biz-rail {
    position: sticky;
    top: calc(var(--rail-top-h) + 24px);
    align-self: start;
  }

  .page-products .biz-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-products .biz-rail__list a {
    border-radius: var(--radius-md);
    padding: 9px 13px;
  }

  .page-products .split {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: var(--biz-gap);
  }

  .page-products .split--reverse .split__media {
    order: 2;
  }

  .page-products .svc-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .svc-card:nth-child(3n+2) {
    margin-top: 20px;
  }

  .page-products .biz-sec {
    padding: 44px 0;
  }

  .page-products .biz-cta,
  .page-products .flow-result {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}
<<<END>>>