.page-products {
  --ch-gap: clamp(20px, 3vw, 32px);
  color: var(--titanium);
}

/* ---------- 首屏 ---------- */
.page-products .ch-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 64px) 0 clamp(24px, 4vw, 52px);
}

.page-products .ch-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
}

.page-products .ch-hero__inner {
  position: relative;
  display: grid;
  gap: var(--ch-gap);
}

.page-products .ch-hero__lead .display {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--titanium);
}

.page-products .lede {
  max-width: 46ch;
  margin: 0 0 24px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--slate);
}

.page-products .ch-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.page-products .ch-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .ch-stats__item {
  padding: 12px 14px;
  border-left: 2px solid var(--ink-500);
  background: rgba(22, 41, 74, 0.5);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
}

.page-products .ch-stats__item dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-products .ch-stats__item dd {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--titanium);
}

.page-products .ch-stats__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--signal);
  letter-spacing: 0.04em;
}

.page-products .ch-fig {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--ink-700);
}

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

.page-products .ch-hero__fig {
  align-self: end;
}

/* ---------- 章节通用 ---------- */
.page-products .ch-overview__intro,
.page-products .ch-docsec__intro {
  max-width: 68ch;
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate);
}

.page-products .ch-overview {
  padding-top: clamp(24px, 4vw, 40px);
}

/* ---------- 快速定位胶囊 ---------- */
.page-products .ch-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  list-style: none;
}

.page-products .ch-jump a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line-mid);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--titanium);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .ch-jump a:hover,
.page-products .ch-jump a:focus-visible {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-900);
}

/* ---------- 通道卡片错落排布 ---------- */
.page-products .ch-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ch-gap);
}

.page-products .ch-card {
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: var(--ink-700);
  scroll-margin-top: 84px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .ch-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-card);
}

.page-products .ch-card__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--signal);
  line-height: 1;
}

.page-products .ch-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--titanium);
}

.page-products .ch-card__who {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-products .ch-card__meta {
  margin: 0 0 16px;
  padding: 10px 12px;
  border-radius: var(--r-xs);
  background: rgba(11, 27, 51, 0.55);
  font-size: 13px;
  color: var(--slate);
}

.page-products .ch-card__meta dt {
  display: inline;
  color: var(--signal-soft);
}

.page-products .ch-card__meta dd {
  display: inline;
  margin: 0;
}

.page-products .ch-card__steps {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  counter-reset: chstep;
}

.page-products .ch-card__steps li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--titanium);
  counter-increment: chstep;
}

.page-products .ch-card__steps li::before {
  content: counter(chstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mint);
}

.page-products .ch-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 14px;
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .ch-card__link:hover,
.page-products .ch-card__link:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 访问准备窄带 ---------- */
.page-products .ch-ribbon {
  position: relative;
}

.page-products .ch-ribbon__inner {
  display: grid;
  gap: var(--ch-gap);
  align-items: center;
  padding: clamp(20px, 3vw, 30px);
  border: 1px dashed var(--line-mid);
  border-radius: var(--r-lg);
  background: rgba(22, 41, 74, 0.42);
}

.page-products .ch-ribbon__title {
  margin: 8px 0 10px;
  font-family: var(--font-editorial);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  color: var(--titanium);
}

.page-products .ch-ribbon__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 对照表 ---------- */
.page-products .ch-fig--wide {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-products .ch-tablewrap {
  overflow-x: auto;
  border: 1px solid var(--line-mid);
  border-radius: var(--r-md);
  background: var(--ink-700);
  -webkit-overflow-scrolling: touch;
}

.page-products .ch-tablewrap:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-products .ch-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .ch-table caption {
  padding: 14px 18px 10px;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-products .ch-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 12px 18px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--signal-soft);
  background: var(--ink-500);
  border-bottom: 1px solid var(--line-mid);
}

.page-products .ch-table tbody tr {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .ch-table tbody tr:nth-child(even) {
  background: rgba(246, 247, 249, 0.035);
}

.page-products .ch-table tbody th,
.page-products .ch-table tbody td {
  padding: 14px 18px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  color: var(--titanium);
}

.page-products .ch-table tbody th {
  font-weight: 600;
  color: var(--titanium);
}

.page-products .ch-table tbody td {
  color: var(--slate);
}

.page-products .ch-table a {
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-mid);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .ch-table a:hover,
.page-products .ch-table a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-products .ch-code {
  display: inline-block;
  min-width: 34px;
  padding: 3px 8px;
  border-radius: var(--r-xs);
  background: rgba(255, 106, 43, 0.14);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--signal);
  text-align: center;
}

/* ---------- 场景折叠 ---------- */
.page-products .ch-scenes {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-products .ch-scenes__title {
  margin: 0 0 16px;
  font-family: var(--font-editorial);
  font-size: clamp(20px, 2.6vw, 26px);
  color: var(--titanium);
}

.page-products .ch-fold {
  margin-bottom: 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  background: var(--ink-700);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-products .ch-fold[open] {
  border-color: var(--line-strong);
}

.page-products .ch-fold > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  color: var(--titanium);
}

.page-products .ch-fold > summary::-webkit-details-marker {
  display: none;
}

.page-products .ch-fold > summary::after {
  content: "展开";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal-soft);
  white-space: nowrap;
}

.page-products .ch-fold[open] > summary::after {
  content: "收起";
  color: var(--slate);
}

.page-products .ch-fold > summary:hover,
.page-products .ch-fold > summary:focus-visible {
  background: rgba(36, 64, 110, 0.4);
}

.page-products .ch-fold__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-products .ch-fold__name {
  font-weight: 600;
}

.page-products .ch-fold__count {
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}

.page-products .ch-fold__body {
  padding: 0 18px 18px;
}

.page-products .ch-fold__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 文档中心 ---------- */
.page-products .ch-docsec .sec-head__title,
.page-products .ch-docsec .ch-docsec__intro {
  color: var(--brown);
}

.page-products .ch-docsec__intro {
  color: rgba(36, 28, 22, 0.78);
}

.page-products .ch-docs {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .ch-fold--doc {
  background: var(--titanium);
  border-color: rgba(36, 28, 22, 0.14);
}

.page-products .ch-fold--doc[open] {
  border-color: rgba(255, 106, 43, 0.6);
}

.page-products .ch-fold--doc > summary {
  color: var(--brown);
}

.page-products .ch-fold--doc > summary:hover,
.page-products .ch-fold--doc > summary:focus-visible {
  background: rgba(255, 106, 43, 0.08);
}

.page-products .ch-fold--doc .ch-fold__num {
  color: var(--signal);
}

.page-products .ch-fold--doc .ch-fold__count,
.page-products .ch-fold--doc > summary::after {
  color: rgba(36, 28, 22, 0.55);
}

.page-products .ch-doclist {
  margin: 0;
  padding: 4px 18px 18px;
  list-style: none;
}

.page-products .ch-doclist li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding: 12px 0;
  border-top: 1px solid rgba(36, 28, 22, 0.1);
}

.page-products .ch-doclist__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--signal);
}

.page-products .ch-doclist__name {
  flex: 1 1 200px;
  font-size: 15px;
  color: var(--brown);
}

.page-products .ch-doclist__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(36, 28, 22, 0.55);
}

.page-products .ch-docsec__foot {
  margin-top: clamp(20px, 3vw, 28px);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(36, 28, 22, 0.7);
}

.page-products .ch-docsec__foot a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 43, 0.4);
}

.page-products .ch-docsec__foot a:hover,
.page-products .ch-docsec__foot a:focus-visible {
  border-bottom-color: var(--signal);
}

/* ---------- 通道状态 ---------- */
.page-products .ch-state__grid {
  display: grid;
  gap: var(--ch-gap);
  align-items: start;
}

.page-products .ch-state__text .prose {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--slate);
}

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

.page-products .ch-legend__item {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .ch-dot {
  width: 12px;
  height: 12px;
  margin-top: 5px;
  border-radius: 50%;
  grid-row: span 2;
}

.page-products .ch-dot--ok {
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(31, 185, 138, 0.18);
}

.page-products .ch-dot--fix {
  background: var(--alert);
  box-shadow: 0 0 0 4px rgba(217, 69, 43, 0.18);
}

.page-products .ch-legend__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--titanium);
}

.page-products .ch-legend__desc {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-products .ch-state__note {
  margin: 0;
  padding: 14px 16px;
  border-left: 2px solid var(--mint);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
  background: rgba(31, 185, 138, 0.08);
  font-size: 14px;
  line-height: 1.75;
  color: var(--titanium);
}

.page-products .ch-state__fig {
  max-width: 420px;
}

/* ---------- 人工协助 ---------- */
.page-products .ch-human {
  color: var(--brown);
}

.page-products .ch-human__inner {
  display: grid;
  gap: var(--ch-gap);
  align-items: start;
}

.page-products .ch-human__title {
  margin: 10px 0 14px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--brown);
}

.page-products .ch-human__lead .prose {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(36, 28, 22, 0.78);
}

.page-products .ch-human__panel {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--r-lg);
  background: var(--ink-900);
  color: var(--titanium);
}

.page-products .ch-human__panelTitle {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--signal-soft);
}

.page-products .ch-human__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-products .ch-human__list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--titanium);
}

.page-products .ch-human__meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

.page-products .ch-human__meta a {
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-mid);
}

.page-products .ch-human__meta a:hover,
.page-products .ch-human__meta a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .ch-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .ch-ribbon__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-products .ch-cards {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-products .ch-card {
    grid-column: span 12;
  }

  .page-products .ch-card--wide {
    grid-column: span 12;
  }
}

@media (min-width: 980px) {
  .page-products .ch-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 5vw, 56px);
  }

  .page-products .ch-card {
    grid-column: span 5;
  }

  .page-products .ch-card--wide {
    grid-column: span 7;
  }

  .page-products .ch-card:nth-child(3) {
    grid-column: span 4;
  }

  .page-products .ch-card:nth-child(5) {
    grid-column: span 8;
  }

  .page-products .ch-state__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(28px, 4vw, 48px);
  }

  .page-products .ch-human__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(28px, 4vw, 48px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .ch-card,
  .page-products .ch-jump a,
  .page-products .ch-card__link,
  .page-products .ch-fold {
    transition: none;
  }

  .page-products .ch-card:hover {
    transform: none;
  }
}
<<<END>>>