.page-products {
  --cat-rail-w: 226px;
  --cat-radius: 4px;
  --cat-paper-line: rgba(26, 20, 16, 0.16);
}

/* ---------- 首屏 ---------- */
.page-products .cat-hero {
  padding: 26px 0 46px;
}

.page-products .cat-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 20px;
}

.page-products h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 7.4vw, 62px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.01em;
  color: var(--fog);
  transform: skewX(-2.5deg);
  transform-origin: left bottom;
}

.page-products .cat-hero__lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
}

.page-products .cat-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

/* 坐标索引面板 */
.page-products .cat-index {
  padding: 16px 14px 12px;
  border: 1px solid var(--line);
  border-radius: var(--cat-radius);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.page-products .cat-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--violet);
}

.page-products .cat-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-products .cat-index__list a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  border-radius: 3px;
  text-decoration: none;
  color: var(--fog);
  font-size: 14px;
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .cat-index__list a:hover,
.page-products .cat-index__list a:focus-visible {
  background: rgba(167, 139, 250, 0.12);
  border-left-color: var(--violet);
}

.page-products .cat-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

.page-products .cat-index__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--slate);
  white-space: nowrap;
}

/* 首图 */
.page-products .cat-figure {
  margin: 28px 0 0;
}

.page-products .cat-figure .media-frame {
  border-radius: var(--cat-radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

.page-products .cat-figure .caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate);
}

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

.page-products a:focus-visible,
.page-products button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 外壳 ---------- */
.page-products .cat-shell {
  display: grid;
  gap: 8px;
  padding-top: 6px;
  padding-bottom: 40px;
}

.page-products .cat-shell__main {
  min-width: 0;
}

.page-products .cat-block {
  padding: 34px 0 42px;
  border-top: 1px solid var(--line-soft);
}

.page-products .cat-block:first-child {
  border-top: 0;
  padding-top: 18px;
}

.page-products .cat-block .section-title {
  margin-top: 8px;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.12;
  color: var(--fog);
}

.page-products .cat-block .section-lede {
  margin-top: 14px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

/* 奶油纸章节 */
.page-products .cat-block--paper {
  margin: 10px 0;
  padding: 28px 18px 34px;
  border: 0;
  border-radius: var(--cat-radius);
  background: var(--paper);
  color: var(--brown);
}

.page-products .cat-block--paper .section-title {
  color: var(--brown);
}

.page-products .cat-block--paper .section-lede--paper {
  color: rgba(26, 20, 16, 0.76);
}

.page-products .kicker--paper {
  color: var(--violet-ink);
}

/* ---------- 六组目录 ---------- */
.page-products .cat-groups {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-products .cat-group {
  display: flex;
  flex-direction: column;
  padding: 18px 16px 16px;
  border: 1px solid var(--line);
  border-radius: var(--cat-radius);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .cat-group:hover {
  transform: translateY(-2px);
  border-color: rgba(167, 139, 250, 0.5);
  box-shadow: var(--glow-violet);
}

.page-products .cat-group__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .cat-group__no {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--violet);
  letter-spacing: -0.02em;
}

.page-products .cat-group__name {
  margin: 0;
  flex: 1 1 auto;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--fog);
}

.page-products .cat-group__desc {
  margin: 12px 0 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-products .cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
}

.page-products .cat-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 2px 10px;
  padding: 8px 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .cat-item:first-child {
  border-top: 0;
}

.page-products .cat-item__code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  padding-top: 2px;
}

.page-products .cat-item__name {
  font-size: 14px;
  color: var(--fog);
}

.page-products .cat-item__note {
  grid-column: 2;
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate);
}

.page-products .cat-group__more {
  margin-top: 14px;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-products .cat-group__more:hover {
  border-bottom-color: var(--orange);
}

/* ---------- 版本 ---------- */
.page-products .cat-ver__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.page-products .cat-fact {
  padding: 12px 12px 11px;
  border: 1px solid var(--cat-paper-line);
  border-radius: var(--cat-radius);
  background: rgba(255, 255, 255, 0.34);
}

.page-products .cat-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--violet-ink);
  letter-spacing: -0.02em;
}

.page-products .cat-fact__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.5;
  color: rgba(26, 20, 16, 0.66);
}

.page-products .cat-ver__scroll {
  margin-top: 22px;
  overflow-x: auto;
  border: 1px solid var(--cat-paper-line);
  border-radius: var(--cat-radius);
}

.page-products .cat-ver-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 13px;
}

.page-products .cat-ver-table__cap {
  padding: 10px 12px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(26, 20, 16, 0.6);
  background: rgba(26, 20, 16, 0.05);
}

.page-products .cat-ver-table th {
  padding: 10px 12px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(26, 20, 16, 0.62);
  border-bottom: 1px solid var(--cat-paper-line);
  white-space: nowrap;
}

.page-products .cat-ver-table td {
  padding: 11px 12px;
  border-bottom: 1px solid rgba(26, 20, 16, 0.1);
  color: var(--brown);
  vertical-align: top;
}

.page-products .cat-ver-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .cat-ver-table tbody tr:hover {
  background: rgba(109, 74, 224, 0.07);
}

.page-products .cat-ver {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--violet-ink);
}

.page-products .cat-block--paper .tag {
  color: var(--brown);
  border-color: rgba(26, 20, 16, 0.22);
  background: rgba(26, 20, 16, 0.05);
}

.page-products .cat-block--paper .tag--orange {
  color: var(--brown);
  background: rgba(251, 146, 60, 0.28);
  border-color: rgba(251, 146, 60, 0.6);
}

.page-products .cat-block--paper .tag--cyan {
  color: var(--brown);
  background: rgba(34, 211, 238, 0.24);
  border-color: rgba(34, 211, 238, 0.55);
}

.page-products .cat-block--paper .cat-figure .caption {
  color: rgba(26, 20, 16, 0.64);
}

.page-products .cat-block--paper .cat-figure {
  margin-top: 24px;
}

/* ---------- 工具 ---------- */
.page-products .cat-steps {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-products .cat-step {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--cat-radius);
  background: linear-gradient(165deg, rgba(34, 211, 238, 0.09), rgba(13, 27, 46, 0) 62%);
}

.page-products .cat-step__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-products .cat-step__title {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: var(--fog);
}

.page-products .cat-step__text {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-products .cat-tools {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.page-products .cat-tool {
  display: flex;
  flex-direction: column;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--cat-radius);
  background: var(--panel-2);
  box-shadow: var(--shadow-soft);
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-products .cat-tool:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-violet);
}

.page-products .cat-tool__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--fog);
}

.page-products .cat-tool__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-products .cat-tool__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  flex: 1 1 auto;
}

.page-products .cat-tool__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--fog);
}

.page-products .cat-tool__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-products .cat-tool__link {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
}

.page-products .cat-tool__link:hover {
  border-bottom-color: var(--orange);
}

/* ---------- 场景路径 ---------- */
.page-products .cat-scenes {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-products .cat-scene {
  position: relative;
  padding: 0 0 22px 26px;
  border-left: 1px solid var(--line);
}

.page-products .cat-scene:last-child {
  padding-bottom: 4px;
}

.page-products .cat-scene::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
}

.page-products .cat-scene__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-products .cat-scene__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  color: var(--fog);
}

.page-products .cat-scene__text {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 侧边快捷条说明 ---------- */
.page-products .cat-railshow {
  display: grid;
  gap: 22px;
  margin-top: 24px;
}

.page-products .cat-railshow__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  color: var(--fog);
}

.page-products .cat-railshow__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .cat-railshow__list li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog);
}

.page-products .cat-railshow__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--orange);
}

.page-products .cat-railshow__note {
  margin: 16px 0 18px;
  padding-left: 12px;
  border-left: 2px solid var(--violet);
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

.page-products .cat-railshow__visual {
  display: grid;
  gap: 14px;
  max-width: 340px;
}

.page-products .cat-mock {
  display: grid;
  gap: 8px;
  padding: 12px 12px 12px 10px;
  border: 1px solid var(--line);
  border-radius: var(--cat-radius);
  background: var(--panel);
}

.page-products .cat-mock__bar {
  display: block;
  height: 6px;
  border-radius: 3px;
  background: var(--line);
}

.page-products .cat-mock__bar--on {
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: 0 0 12px -2px rgba(34, 211, 238, 0.8);
}

.page-products .cat-railshow__visual .media-frame {
  border-radius: var(--cat-radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

/* ---------- 右侧快捷条 ---------- */
.page-products .cat-rail {
  display: none;
}

.page-products .cat-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--violet);
}

.page-products .cat-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.page-products .cat-rail__list a {
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  margin-left: -1px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate);
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-products .cat-rail__list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

.page-products .cat-rail__list a:hover {
  color: var(--fog);
  border-left-color: var(--violet);
  background: rgba(167, 139, 250, 0.08);
}

.page-products .cat-rail__list a:focus-visible {
  color: var(--fog);
  border-left-color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
}

.page-products .cat-rail__note {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate);
}

.page-products .cat-rail__back {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-products .cat-rail__back:hover {
  border-bottom-color: var(--orange);
}

/* ---------- 收尾 ---------- */
.page-products .cat-end {
  padding: 34px 0 46px;
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(109, 74, 224, 0.16), rgba(6, 16, 31, 0) 78%);
}

.page-products .cat-end__inner {
  display: grid;
  gap: 20px;
}

.page-products .cat-end__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 800;
  line-height: 1.12;
  color: var(--fog);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-products .cat-end__text {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-products .cat-end__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-products .cat-hero {
    padding-top: 32px;
  }

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

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

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

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

  .page-products .cat-block--paper {
    padding: 32px 26px 38px;
  }
}

@media (min-width: 900px) {
  .page-products .cat-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 34px;
  }

  .page-products .cat-hero__lede {
    font-size: 17px;
  }

  .page-products .cat-index {
    padding: 20px 18px 16px;
    margin-top: 6px;
  }

  .page-products .cat-railshow {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
    align-items: start;
    gap: 32px;
  }

  .page-products .cat-end__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 28px;
  }
}

@media (min-width: 1080px) {
  .page-products .cat-shell {
    grid-template-columns: minmax(0, 1fr) var(--cat-rail-w);
    gap: 40px;
    align-items: start;
  }

  .page-products .cat-shell__main {
    padding-right: 4px;
  }

  .page-products .cat-rail {
    display: block;
    position: sticky;
    top: 104px;
    padding-top: 18px;
  }

  .page-products .cat-block {
    padding: 40px 0 48px;
  }

  .page-products .cat-block--paper {
    padding: 36px 34px 44px;
  }
}

@media (min-width: 1240px) {
  .page-products .cat-groups {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .cat-group,
  .page-products .cat-tool,
  .page-products .cat-index__list a,
  .page-products .cat-rail__list a {
    transition: none;
  }

  .page-products .cat-group:hover,
  .page-products .cat-tool:hover {
    transform: none;
  }
}
<<<END>>>