.page-products {
  --fc-toc-w: 230px;
  --fc-rule: 1px solid var(--line);
  --fc-rule-soft: 1px solid var(--line-soft);
}

/* ===== 首屏 ===== */
.page-products .fc-hero {
  padding: clamp(26px, 5vw, 54px) 0 clamp(38px, 6vw, 68px);
  background:
    radial-gradient(120% 90% at 82% 0%, rgba(200, 162, 74, .10) 0%, rgba(200, 162, 74, 0) 58%),
    var(--ink);
  border-bottom: var(--fc-rule);
}

.page-products .fc-hero .breadcrumbs {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-products .fc-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-products .fc-hero__lead h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(32px, 5.6vw, 68px);
  line-height: 1.08;
  letter-spacing: .01em;
  color: var(--paper);
  margin: 0 0 20px;
}

.page-products .fc-hero__lede {
  max-width: 60ch;
  font-size: clamp(15px, 1.1vw, 16.5px);
  line-height: 1.85;
  color: var(--paper);
  opacity: .84;
  margin: 0 0 18px;
}

.page-products .fc-hero__meta {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  margin: 0;
}

.page-products .fc-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--fc-rule);
}

.page-products .fc-stat {
  background: var(--ink);
  padding: 18px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products .fc-stat__num {
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1;
  color: var(--gold-lt);
  letter-spacing: .02em;
}

.page-products .fc-stat__label {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ===== 主体骨架 ===== */
.page-products .fc-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-products .fc-flow {
  min-width: 0;
}

/* ===== 右侧索引 ===== */
.page-products .fc-toc {
  order: -1;
  margin: 0 0 8px;
  padding-top: 18px;
}

.page-products .fc-toc__title {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gold);
  margin: 0 0 10px;
}

.page-products .fc-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .fc-toc__link {
  display: block;
  white-space: nowrap;
  padding: 7px 12px;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--mist);
  text-decoration: none;
  border: var(--fc-rule);
  border-radius: var(--radius);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-products .fc-toc__link:hover,
.page-products .fc-toc__link:focus-visible {
  color: var(--gold-lt);
  border-color: var(--line-strong);
  outline: none;
}

/* ===== 章节通用 ===== */
.page-products .fc-sec {
  padding: clamp(40px, 6vw, 76px) 0;
  border-bottom: var(--fc-rule-soft);
  position: relative;
}

.page-products .fc-sec--last {
  border-bottom: 0;
}

.page-products .fc-sec__label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-products .fc-sec__label::before {
  content: "";
  display: block;
  width: 26px;
  height: 1px;
  background: var(--gold);
}

.page-products .fc-sec h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(23px, 3.1vw, 36px);
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--paper);
  margin: 0 0 16px;
}

.page-products .fc-sec__intro {
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--mist);
  margin: 0;
}

.page-products .fc-sec h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-products .fc-sec__foot {
  margin: 28px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
  border-left: 2px solid var(--gold-deep);
  padding-left: 14px;
}

.page-products .fc-sec__foot a {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-products .fc-sec__foot a:hover,
.page-products .fc-sec__foot a:focus-visible {
  color: var(--paper);
  border-color: var(--gold-lt);
}

/* ===== 图片 ===== */
.page-products .fc-fig {
  margin: 0;
  border: var(--fc-rule-soft);
  background: var(--slate);
  overflow: hidden;
}

.page-products .fc-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: brightness(.82) contrast(1.04);
}

.page-products .fc-fig .fig__cap {
  display: block;
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
  border-top: var(--fc-rule-soft);
  background: var(--ink);
}

.page-products .fc-fig--rules {
  margin-top: 26px;
}

.page-products .fc-fig--ruler,
.page-products .fc-fig--portico {
  margin-top: 26px;
}

.page-products .fc-fig--ruler img,
.page-products .fc-fig--portico img {
  aspect-ratio: 16 / 6;
}

/* ===== 规则档案卡 ===== */
.page-products .fc-dossiers {
  margin-top: 28px;
  border-top: var(--fc-rule);
}

.page-products .fc-dossier {
  border-bottom: var(--fc-rule-soft);
  transition: background 200ms var(--ease);
}

.page-products .fc-dossier[open] {
  background: var(--slate);
}

.page-products .fc-dossier__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 18px 12px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .fc-dossier__sum:focus-visible {
  outline: 1px solid var(--line-strong);
  outline-offset: -1px;
}

.page-products .fc-dossier__no {
  min-width: 38px;
  text-align: center;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--gold);
  border: 1px solid var(--gold-deep);
  padding: 3px 6px;
  border-radius: var(--radius);
}

.page-products .fc-dossier__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--paper);
  line-height: 1.4;
}

.page-products .fc-dossier__count {
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-products .fc-dossier__mark {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--gold);
  transition: transform 220ms var(--ease);
}

.page-products .fc-dossier[open] .fc-dossier__mark {
  transform: rotate(180deg);
}

.page-products .fc-dossier__body {
  padding: 2px 14px 22px;
  border-left: 1px solid var(--gold-deep);
  margin-left: 30px;
  padding-left: 18px;
}

.page-products .fc-dossier__body p {
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.86;
  color: var(--mist);
  margin: 0 0 10px;
}

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

/* ===== 版本 ===== */
.page-products .fc-version-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 26px;
}

.page-products .fc-version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--fc-rule);
}

.page-products .fc-version-item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: var(--fc-rule-soft);
}

.page-products .fc-version-item::before {
  content: "";
  width: 7px;
  height: 7px;
  margin-top: 8px;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(200, 162, 74, .14);
}

.page-products .fc-version-item h3 {
  margin: 0 0 6px;
}

.page-products .fc-version-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

/* ===== 记录字段 ===== */
.page-products .fc-field-list {
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: var(--fc-rule-soft);
}

.page-products .fc-field {
  background: var(--ink);
  padding: 20px 20px 22px;
}

.page-products .fc-field dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gold-lt);
  margin: 0 0 9px;
}

.page-products .fc-field dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

.page-products .fc-table-wrap {
  margin-top: 30px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: var(--fc-rule-soft);
}

.page-products .fc-table-wrap .data-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
}

.page-products .fc-table-wrap .data-table caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  background: var(--slate);
  border-bottom: var(--fc-rule-soft);
}

.page-products .fc-table-wrap .data-table th,
.page-products .fc-table-wrap .data-table td {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  line-height: 1.6;
  vertical-align: top;
}

.page-products .fc-table-wrap .data-table thead th {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
  background: var(--slate);
  border-bottom: var(--fc-rule);
}

.page-products .fc-table-wrap .data-table tbody th {
  color: var(--paper);
  font-weight: 500;
  white-space: nowrap;
}

.page-products .fc-table-wrap .data-table tbody td {
  color: var(--mist);
}

/* ===== 筛选 ===== */
.page-products .fc-filter-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 30px;
  background: var(--line-soft);
  border: var(--fc-rule-soft);
}

.page-products .fc-filter-dim {
  background: var(--ink);
  padding: 22px 20px;
}

.page-products .fc-filter-dim h3 {
  color: var(--gold-lt);
  font-size: 15px;
  letter-spacing: .02em;
}

.page-products .fc-filter-dim p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.84;
  color: var(--mist);
}

.page-products .fc-combos {
  margin-top: 30px;
  padding: 22px 20px;
  background: var(--slate);
  border: var(--fc-rule-soft);
}

.page-products .fc-combos__title {
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--gold);
  margin: 0 0 16px;
}

.page-products .fc-combos ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .fc-combos li {
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
  padding-left: 0;
}

.page-products .fc-combos__tag {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 8px;
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--celadon);
  border: 1px solid rgba(110, 156, 134, .45);
  border-radius: var(--radius);
}

/* ===== 入口 ===== */
.page-products .fc-entry-grid {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: var(--fc-rule-soft);
}

.page-products .fc-entry {
  background: var(--ink);
  padding: 20px 20px 22px;
}

.page-products .fc-entry__k {
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--gold);
  margin: 0 0 10px;
}

.page-products .fc-entry__v {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

.page-products .fc-entry--wide {
  background: var(--slate);
  border-left: 2px solid var(--gold-deep);
}

/* ===== 双端 ===== */
.page-products .fc-device-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 26px;
}

.page-products .fc-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: var(--fc-rule-soft);
}

.page-products .fc-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  background: var(--ink);
  padding: 20px;
}

.page-products .fc-step__no {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--celadon);
  line-height: 1.7;
}

.page-products .fc-step h3 {
  font-size: 15.5px;
  margin: 0 0 6px;
  color: var(--paper);
}

.page-products .fc-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

/* ===== 场景 ===== */
.page-products .fc-scenes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 28px;
}

.page-products .fc-scene {
  border-top: 2px solid var(--gold-deep);
  padding-top: 18px;
}

.page-products .fc-scene h3 {
  font-size: 16.5px;
  margin: 0 0 10px;
  line-height: 1.55;
}

.page-products .fc-scene p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.84;
  color: var(--mist);
}

.page-products .fc-scene__path {
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--celadon);
  margin: 0;
}

/* ===== 断点 ===== */
@media (min-width: 620px) {
  .page-products .fc-field-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-products .fc-entry--wide {
    grid-column: 1 / -1;
  }

  .page-products .fc-dossier__sum {
    padding: 20px 16px;
  }

  .page-products .fc-dossier__body {
    margin-left: 58px;
    padding: 2px 20px 24px 20px;
  }
}

@media (min-width: 860px) {
  .page-products .fc-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 46px;
    align-items: end;
  }

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

  .page-products .fc-version-grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .fc-device-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 40px;
    align-items: start;
  }

  .page-products .fc-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

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

@media (min-width: 960px) {
  .page-products .fc-shell {
    grid-template-columns: minmax(0, 1fr) var(--fc-toc-w);
    gap: 58px;
    align-items: start;
  }

  .page-products .fc-toc {
    order: 0;
    position: sticky;
    top: calc(var(--beam-h) + 26px);
    align-self: start;
    margin: 0;
    padding-top: clamp(40px, 6vw, 76px);
  }

  .page-products .fc-toc__list {
    display: block;
    overflow: visible;
    padding: 0;
    border-left: var(--fc-rule);
  }

  .page-products .fc-toc__link {
    white-space: normal;
    border: 0;
    border-radius: 0;
    padding: 9px 0 9px 16px;
    position: relative;
    font-size: 13px;
  }

  .page-products .fc-toc__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 5px;
    bottom: 5px;
    width: 1px;
    background: transparent;
    transition: background 180ms var(--ease);
  }

  .page-products .fc-toc__link:hover::before,
  .page-products .fc-toc__link:focus-visible::before {
    background: var(--gold);
  }
}

@media (min-width: 1180px) {
  .page-products .fc-dossier__body {
    margin-left: 62px;
  }

  .page-products .fc-combos {
    padding: 26px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .fc-dossier__mark,
  .page-products .fc-toc__link,
  .page-products .fc-toc__link::before,
  .page-products .fc-dossier {
    transition: none;
  }
}
<<<END>>>