.page-products {
  background: var(--ink-900);
  color: var(--text-100);
  font-family: var(--font-body);
}

.page-products h1,
.page-products h2,
.page-products h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.01em;
  margin: 0;
}

.page-products p {
  margin: 0 0 14px;
}

.page-products a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-products .cat-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 44px) 0 clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--line-500);
}

.page-products .cat-hero::after {
  content: "";
  position: absolute;
  right: -18%;
  top: -55%;
  width: min(720px, 78%);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(0, 229, 208, 0.11), transparent 62%);
  pointer-events: none;
}

.page-products .cat-hero .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(22px, 4vw, 44px);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--text-300);
}

.page-products .cat-hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .cat-hero .breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--line-500);
}

.page-products .cat-hero .breadcrumb a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-products .cat-hero .breadcrumb a:hover,
.page-products .cat-hero .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-products .cat-hero__title {
  position: relative;
  z-index: 1;
  font-size: clamp(38px, 7.6vw, 86px);
  line-height: 0.98;
  color: var(--text-100);
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-products .cat-hero__lead {
  position: relative;
  z-index: 1;
  max-width: 34em;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--text-300);
}

.page-products .cat-jump {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-products .cat-jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid var(--line-500);
  background: var(--ink-800);
  color: var(--text-100);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-products .cat-jump a .num {
  color: var(--cyan);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
}

.page-products .cat-jump a:hover,
.page-products .cat-jump a:focus-visible {
  border-color: var(--cyan);
  background: var(--ink-700);
}

/* ---------- 目录总览 ---------- */
.page-products .cat-overview {
  padding: clamp(34px, 5vw, 64px) 0;
  background: var(--ink-800);
  border-bottom: 1px solid var(--line-500);
}

.page-products .cat-overview__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: clamp(22px, 3.5vw, 34px);
}

.page-products .cat-overview__head h2 {
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.2;
}

.page-products .cat-overview__head p {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--text-300);
  letter-spacing: 0.02em;
}

.page-products .cat-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-products .cat-card {
  position: relative;
  background: var(--ink-900);
  padding: 24px 20px;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-products .cat-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.24s var(--ease);
}

.page-products .cat-card:hover {
  transform: translateY(-2px);
  background: var(--ink-800);
}

.page-products .cat-card:hover::before,
.page-products .cat-card:focus-within::before {
  transform: scaleY(1);
}

.page-products .cat-card__tag {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-products .cat-card__h {
  font-size: var(--fs-22);
  line-height: 1.25;
  margin-bottom: 10px;
}

.page-products .cat-card__who {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-300);
}

.page-products .cat-card__out {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-100);
}

.page-products .cat-card__more {
  border-top: 1px solid var(--line-500);
  padding-top: 12px;
  margin-top: 4px;
}

.page-products .cat-card__more summary {
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--cyan);
  min-height: 24px;
}

.page-products .cat-card__more summary::-webkit-details-marker {
  display: none;
}

.page-products .cat-card__more summary::after {
  content: " +";
}

.page-products .cat-card__more[open] summary::after {
  content: " −";
}

.page-products .cat-card__more p {
  margin: 10px 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-300);
}

/* ---------- 主体布局 ---------- */
.page-products .cat-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-products .cat-index {
  border-bottom: 1px solid var(--line-500);
  padding: 18px 0 4px;
}

.page-products .cat-index__label {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--text-300);
}

.page-products .cat-index__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 14px;
  scrollbar-width: thin;
}

.page-products .cat-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 44px;
  padding: 11px 14px;
  border-left: 2px solid var(--line-500);
  color: var(--text-300);
  font-size: var(--fs-14);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-products .cat-index__link .num {
  font-size: var(--fs-12);
  color: var(--line-500);
  transition: color 0.16s var(--ease);
}

.page-products .cat-index__link:hover,
.page-products .cat-index__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--ink-800);
}

.page-products .cat-index__link:hover .num,
.page-products .cat-index__link:focus-visible .num {
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-products .cat-sec {
  padding: clamp(34px, 5.5vw, 68px) 0;
  border-bottom: 1px solid var(--line-500);
}

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

.page-products .cat-sec__head {
  display: flex;
  align-items: flex-start;
  gap: clamp(10px, 2vw, 20px);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .cat-sec__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(46px, 9vw, 88px);
  line-height: 0.82;
  color: rgba(0, 229, 208, 0.2);
  transform: translateY(-4px);
  letter-spacing: -0.02em;
}

.page-products .cat-sec__titles {
  padding-top: 4px;
}

.page-products .cat-sec__titles .eyebrow {
  color: var(--text-300);
  margin-bottom: 8px;
}

.page-products .cat-sec__titles h2 {
  font-size: clamp(23px, 3.8vw, 36px);
  line-height: 1.18;
}

.page-products .cat-sec__lead {
  max-width: 40em;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--text-300);
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-products .cat-sec__foot {
  margin-top: clamp(18px, 3vw, 26px);
  padding-top: 16px;
  border-top: 1px solid var(--line-500);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-300);
  max-width: 42em;
}

.page-products .cat-sec__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.5vw, 34px);
  align-items: start;
}

.page-products .cat-sec__text p {
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--text-100);
}

/* ---------- 图片 ---------- */
.page-products .cat-fig {
  margin: 0;
  border: 1px solid var(--line-500);
  background: var(--ink-800);
}

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

.page-products .cat-fig--wide {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-products .cat-fig .media__caption {
  display: block;
  padding: 10px 14px;
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--text-300);
  border-top: 1px solid var(--line-500);
}

/* ---------- 筛法列表 ---------- */
.page-products .cat-filters {
  margin: 20px 0;
  border-top: 1px solid var(--line-500);
}

.page-products .cat-filters__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-500);
}

.page-products .cat-filters__row dt {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: var(--fs-17);
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--text-100);
}

.page-products .cat-filters__row dt .num {
  font-size: var(--fs-12);
  color: var(--cyan);
  letter-spacing: 0.1em;
}

.page-products .cat-filters__row dd {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-300);
}

/* ---------- 字段清单 ---------- */
.page-products .cat-fields {
  margin-top: clamp(22px, 3.5vw, 34px);
  padding: 20px;
  border: 1px solid var(--line-500);
  border-left: 3px solid var(--orange);
  background: var(--ink-800);
}

.page-products .cat-fields .eyebrow {
  color: var(--orange);
  margin-bottom: 14px;
}

.page-products .cat-fields__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .cat-fields__list li {
  padding: 6px 12px;
  border: 1px solid var(--line-500);
  background: var(--ink-900);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--text-100);
}

/* ---------- 主题网格 ---------- */
.page-products .cat-topics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
  list-style: none;
  margin: 0 0 clamp(22px, 3.5vw, 32px);
  padding: 0;
}

.page-products .cat-topics__item {
  background: var(--ink-900);
  padding: 18px 18px 16px;
  transition: background 0.18s var(--ease);
}

.page-products .cat-topics__item:hover {
  background: var(--ink-800);
}

.page-products .cat-topics__no {
  margin: 0 0 8px;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-products .cat-topics__item h3 {
  font-size: var(--fs-17);
  margin-bottom: 8px;
}

.page-products .cat-topics__item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-300);
}

/* ---------- 要点列表 ---------- */
.page-products .cat-bullets {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-products .cat-bullets li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-300);
}

.page-products .cat-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-products .cat-bullets strong {
  color: var(--text-100);
  font-weight: 600;
}

/* ---------- 链接 ---------- */
.page-products .cat-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.4);
  padding-bottom: 1px;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
}

.page-products .cat-link:hover,
.page-products .cat-link:focus-visible {
  color: var(--text-100);
  border-bottom-color: var(--text-100);
}

.page-products .cat-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 适配表 ---------- */
.page-products .compat-scroll {
  overflow-x: auto;
  border: 1px solid var(--line-500);
  background: var(--ink-800);
  margin-bottom: clamp(22px, 3.5vw, 32px);
}

.page-products .compat {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: var(--fs-14);
}

.page-products .compat__caption {
  text-align: left;
  padding: 14px 16px;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--text-300);
  border-bottom: 1px solid var(--line-500);
}

.page-products .compat th,
.page-products .compat td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-500);
  vertical-align: middle;
}

.page-products .compat thead th {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--text-300);
  background: var(--ink-700);
  text-transform: uppercase;
}

.page-products .compat tbody th {
  font-weight: 600;
  color: var(--text-100);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
}

.page-products .compat tbody td {
  color: var(--text-300);
  font-variant-numeric: tabular-nums;
}

.page-products .compat tbody tr:last-child th,
.page-products .compat tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .compat tbody tr:hover {
  background: rgba(22, 38, 61, 0.7);
}

.page-products .dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 8px;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 208, 0.14);
  vertical-align: 1px;
}

.page-products .dot--warn {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 47, 0.16);
}

/* ---------- 说明卡 ---------- */
.page-products .cat-notes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .cat-note {
  padding: 18px 18px 16px;
  border: 1px solid var(--line-500);
  border-top: 2px solid var(--cyan);
  background: var(--ink-800);
}

.page-products .cat-note h3 {
  font-size: var(--fs-17);
  margin-bottom: 8px;
}

.page-products .cat-note p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-300);
}

/* ---------- 三问收束 ---------- */
.page-products .cat-decide {
  padding: clamp(34px, 5.5vw, 68px) 0 clamp(40px, 6vw, 76px);
  background:
    linear-gradient(180deg, rgba(0, 229, 208, 0.05), transparent 42%),
    var(--ink-800);
  border-top: 1px solid var(--line-500);
}

.page-products .cat-decide__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 36px);
  align-items: start;
}

.page-products .cat-decide__main .eyebrow {
  color: var(--orange);
  margin-bottom: 10px;
}

.page-products .cat-decide__main h2 {
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.18;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-products .cat-decide__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  counter-reset: q;
}

.page-products .cat-decide__list li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding: 18px 0;
  border-top: 1px solid var(--line-500);
}

.page-products .cat-decide__list li:last-child {
  border-bottom: 1px solid var(--line-500);
}

.page-products .cat-decide__q {
  font-size: var(--fs-14);
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-products .cat-decide__list h3 {
  font-size: var(--fs-17);
  line-height: 1.4;
  margin-bottom: 8px;
}

.page-products .cat-decide__list p {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-300);
  margin-bottom: 10px;
}

.page-products .cat-decide__tail {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-300);
  max-width: 40em;
}

.page-products .cat-decide__fig {
  margin: 0;
  border: 1px solid var(--line-500);
  overflow: hidden;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-products .cat-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-products .cat-filters__row {
    grid-template-columns: 180px 1fr;
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-products .cat-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    padding-top: clamp(28px, 4vw, 48px);
  }

  .page-products .cat-index {
    position: sticky;
    top: 88px;
    align-self: start;
    border-bottom: 0;
    padding: 6px 0 0;
  }

  .page-products .cat-index__nav {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-products .cat-index__link {
    border-left-width: 2px;
    padding: 12px 12px 12px 16px;
  }

  .page-products .cat-sec {
    padding-top: clamp(36px, 5vw, 64px);
  }

  .page-products .cat-sec:first-child {
    padding-top: 0;
  }

  .page-products .cat-sec__split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-products .cat-sec__split--rev {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  }

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

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

  .page-products .cat-decide__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.5fr);
  }

  .page-products .cat-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-products .cat-overview__head {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .cat-card,
  .page-products .cat-card::before,
  .page-products .cat-jump a,
  .page-products .cat-index__link,
  .page-products .cat-link {
    transition: none;
  }

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