.page-products {
  --cat-line: rgba(11, 31, 42, 0.13);
  --cat-line-strong: rgba(11, 31, 42, 0.3);
  --cat-line-dark: rgba(245, 247, 248, 0.16);
  --cat-tint: #eef2f4;
  color: var(--ink);
}

.page-products .cat-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--mist);
  border-bottom: 1px solid var(--cat-line-dark);
}

.page-products .cat-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, var(--rule-dark-soft) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-products .cat-hero__in {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  padding-top: 40px;
  padding-bottom: 44px;
}

.page-products .cat-hero__copy .eyebrow {
  color: var(--orange-lift);
}

.page-products .cat-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(28px, 7vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 800;
  max-width: 20ch;
}

.page-products .cat-hero__lead {
  margin: 20px 0 0;
  max-width: 60ch;
  color: rgba(245, 247, 248, 0.78);
  font-size: 15px;
  line-height: 1.85;
}

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

.page-products .cat-hero .btn--ghost {
  color: var(--mist);
  border-color: rgba(245, 247, 248, 0.4);
}

.page-products .cat-coord {
  margin: 0;
  border-top: 1px solid var(--cat-line-dark);
  border-left: 1px solid var(--cat-line-dark);
  display: grid;
  grid-template-columns: 1fr;
}

.page-products .cat-coord__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  border-right: 1px solid var(--cat-line-dark);
  border-bottom: 1px solid var(--cat-line-dark);
  background: rgba(18, 59, 74, 0.35);
}

.page-products .cat-coord dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(245, 247, 248, 0.6);
  text-transform: uppercase;
}

.page-products .cat-coord dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-products .cat-coord__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.02em;
}

.page-products .cat-coord__num--sm {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--mist);
  font-weight: 600;
}

.page-products .cat-coord__unit {
  font-size: 12px;
  color: rgba(245, 247, 248, 0.62);
}

/* ---------- 章节骨架 ---------- */
.page-products .cat-section {
  padding: clamp(52px, 8vw, 96px) 0;
  border-bottom: 1px solid var(--cat-line);
}

.page-products .cat-section--tree {
  background: var(--mist);
}

.page-products .cat-section--scenes {
  background: var(--fog);
}

.page-products .cat-section--groups,
.page-products .cat-section--reach {
  background: var(--mist);
}

.page-products .cat-section--notes {
  background: var(--teal-900);
  color: var(--mist);
}

.page-products .cat-section--version {
  background: var(--fog);
}

.page-products .cat-section--pick {
  background: var(--mist);
}

.page-products .cat-head {
  max-width: 760px;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-products .cat-head h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 4.4vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 800;
}

.page-products .cat-head__intro {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
  max-width: 66ch;
}

.page-products .cat-section--notes .eyebrow {
  color: var(--signal-soft);
}

.page-products .cat-section--notes .cat-head__intro,
.page-products .cat-section--notes p {
  color: rgba(245, 247, 248, 0.76);
}

/* ---------- 技能树 ---------- */
.page-products .cat-tree-map {
  position: relative;
  margin-bottom: 40px;
}

.page-products .cat-tree-root {
  position: relative;
  max-width: 420px;
  padding: 22px 24px 20px;
  background: var(--ink);
  color: var(--mist);
  border-radius: 2px;
}

.page-products .cat-tree-root::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -26px;
  width: 1px;
  height: 26px;
  background: var(--cat-line-strong);
}

.page-products .cat-tree-root h3 {
  margin: 8px 0 8px;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.page-products .cat-tree-root p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(245, 247, 248, 0.72);
}

.page-products .cat-tree-idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-products .cat-tree-branches {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--cat-line-strong);
}

.page-products .cat-tree-node {
  position: relative;
  padding: 26px 0 0;
  border-left: 0;
}

.page-products .cat-tree-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  width: 1px;
  height: 26px;
  background: var(--cat-line-strong);
}

.page-products .cat-tree-node h3 {
  margin: 8px 0 8px;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.page-products .cat-tree-node p {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 40ch;
}

.page-products .cat-tree-node--signal h3::before,
.page-products .cat-tree-node--orange h3::before,
.page-products .cat-tree-node--indigo h3::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  vertical-align: 2px;
}

.page-products .cat-tree-node--signal h3::before {
  background: var(--signal);
}

.page-products .cat-tree-node--orange h3::before {
  background: var(--orange);
}

.page-products .cat-tree-node--indigo h3::before {
  background: var(--indigo);
}

.page-products .cat-node-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 3px;
}

.page-products .cat-node-link:hover,
.page-products .cat-node-link:focus-visible {
  color: var(--teal-700);
  border-bottom-color: var(--teal-700);
}

/* ---------- 图 ---------- */
.page-products .cat-fig {
  margin: 0;
  border: 1px solid var(--cat-line);
  border-radius: 2px;
  background: var(--mist);
  overflow: hidden;
}

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

.page-products .cat-fig figcaption {
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
  border-top: 1px solid var(--cat-line);
  background: var(--tint);
}

.page-products .cat-fig--wide {
  margin-top: 40px;
}

.page-products .cat-fig--screen {
  margin-top: 20px;
}

/* ---------- 场景网格 ---------- */
.page-products .cat-scene-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--cat-line);
  border: 1px solid var(--cat-line);
}

.page-products .cat-scene {
  padding: 20px 18px 22px;
  background: var(--mist);
}

.page-products .cat-scene--lead {
  background: var(--teal-900);
  color: var(--mist);
}

.page-products .cat-scene--alert {
  background: var(--wine);
  color: var(--mist);
}

.page-products .cat-scene__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
  margin-bottom: 10px;
}

.page-products .cat-scene--lead .cat-scene__idx,
.page-products .cat-scene--alert .cat-scene__idx {
  color: var(--orange-lift);
}

.page-products .cat-scene h3 {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.page-products .cat-scene p {
  margin: 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--slate);
}

.page-products .cat-scene--lead p,
.page-products .cat-scene--alert p {
  color: rgba(245, 247, 248, 0.8);
}

/* ---------- 分组目录树 ---------- */
.page-products .cat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-products .cat-chip {
  display: inline-block;
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--teal-700);
  background: var(--fog);
  border: 1px solid var(--cat-line);
  border-radius: 2px;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .cat-chip:hover,
.page-products .cat-chip:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.page-products .cat-tree-list {
  border-top: 1px solid var(--cat-line-strong);
}

.page-products .cat-tree {
  border-bottom: 1px solid var(--cat-line);
  background: var(--mist);
}

.page-products .cat-tree summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 18px 14px 18px 0;
  position: relative;
}

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

.page-products .cat-tree summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--orange);
  line-height: 1;
}

.page-products .cat-tree[open] summary::after {
  content: "—";
  font-size: 13px;
}

.page-products .cat-tree__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  min-width: 34px;
}

.page-products .cat-tree__name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-products .cat-tree__count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--slate);
  border: 1px solid var(--cat-line);
  padding: 3px 8px;
}

.page-products .cat-tree__body {
  padding: 0 0 24px 34px;
}

.page-products .cat-tree__body p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 62ch;
}

.page-products .cat-tree__body ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--cat-line);
  border: 1px solid var(--cat-line);
}

.page-products .cat-tree__body li {
  background: var(--fog);
  padding: 10px 12px;
  font-size: 13px;
  color: var(--ink);
  border-left: 2px solid var(--signal);
}

/* ---------- 版本公告 ---------- */
.page-products .cat-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-products .cat-split__text h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 4.4vw, 36px);
  line-height: 1.26;
  letter-spacing: -0.015em;
  font-weight: 800;
}

.page-products .cat-split__text > p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  max-width: 62ch;
}

.page-products .cat-points {
  list-style: none;
  margin: 22px 0 26px;
  padding: 0;
  border-top: 1px solid var(--cat-line-dark);
}

.page-products .cat-points li {
  padding: 13px 0 13px 18px;
  border-bottom: 1px solid var(--cat-line-dark);
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(245, 247, 248, 0.78);
  position: relative;
}

.page-products .cat-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 9px;
  height: 1px;
  background: var(--orange);
}

.page-products .cat-points strong {
  color: var(--mist);
}

.page-products .cat-split__side {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-content: start;
}

.page-products .cat-note-card {
  border: 1px solid var(--cat-line-dark);
  border-left: 3px solid var(--orange);
  padding: 18px 18px 20px;
  background: rgba(11, 31, 42, 0.32);
}

.page-products .cat-note-card--signal {
  border-left-color: var(--signal);
}

.page-products .cat-note-card__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange-lift);
}

.page-products .cat-note-card--signal .cat-note-card__idx {
  color: var(--signal-soft);
}

.page-products .cat-note-card h3 {
  margin: 10px 0 8px;
  font-size: 16px;
  color: var(--mist);
}

.page-products .cat-note-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(245, 247, 248, 0.74);
}

/* ---------- 版本与设备 ---------- */
.page-products .cat-version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-products .cat-version-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--cat-line);
  border: 1px solid var(--cat-line);
  align-content: start;
}

.page-products .cat-device {
  background: var(--mist);
  padding: 18px 18px 20px;
}

.page-products .cat-device h3 {
  margin: 0 0 8px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.page-products .cat-device h3::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 1px;
  margin-right: 8px;
  vertical-align: 4px;
  background: var(--orange);
}

.page-products .cat-device p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 领取步骤 ---------- */
.page-products .cat-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--cat-line);
  border: 1px solid var(--cat-line);
}

.page-products .cat-step {
  background: var(--fog);
  padding: 20px 18px 22px;
  position: relative;
}

.page-products .cat-step__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-bottom: 10px;
}

.page-products .cat-step h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.page-products .cat-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate);
}

.page-products .cat-reach-bar {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 20px;
  border: 1px solid var(--cat-line-strong);
  border-left: 4px solid var(--orange);
  background: var(--fog);
}

.page-products .cat-reach-bar p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  max-width: 46ch;
}

/* ---------- 人群建议 ---------- */
.page-products .cat-pick-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .cat-pick {
  border: 1px solid var(--cat-line);
  border-top: 3px solid var(--teal-700);
  padding: 22px 20px 24px;
  background: var(--mist);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-products .cat-pick:hover {
  transform: translateY(-3px);
  border-color: var(--cat-line-strong);
}

.page-products .cat-pick h3 {
  margin: 14px 0 10px;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.page-products .cat-pick p {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--slate);
}

.page-products .cat-pick__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  border-top: 1px solid var(--cat-line);
  padding-top: 14px;
}

.page-products .cat-pick__links a {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--teal-700);
  text-decoration: none;
  border-bottom: 1px solid var(--cat-line-strong);
  padding-bottom: 2px;
}

.page-products .cat-pick__links a:hover,
.page-products .cat-pick__links a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--orange);
}

.page-products .cat-close {
  margin-top: 32px;
  padding: 26px 22px;
  background: var(--ink);
  color: var(--mist);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-radius: 2px;
}

.page-products .cat-close__line {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  max-width: 30ch;
}

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

.page-products .cat-close .btn--ghost {
  color: var(--mist);
  border-color: rgba(245, 247, 248, 0.4);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-products .cat-scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-products .cat-tree__body ul {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-products .cat-hero__in {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.75fr);
    align-items: start;
    gap: 48px;
    padding-top: 56px;
    padding-bottom: 64px;
  }

  .page-products .cat-coord {
    margin-top: 8px;
  }

  .page-products .cat-tree-branches {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 30px;
  }

  .page-products .cat-tree-node {
    padding: 30px 26px 4px;
    border-left: 1px solid var(--cat-line-strong);
  }

  .page-products .cat-tree-node:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-products .cat-tree-node::before {
    left: 26px;
    height: 30px;
  }

  .page-products .cat-tree-node:first-child::before {
    left: 0;
  }

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

  .page-products .cat-scene--lead {
    grid-column: span 2;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 28px 24px 26px;
  }

  .page-products .cat-scene--alert {
    grid-column: span 2;
  }

  .page-products .cat-tree__body {
    padding-left: 48px;
  }

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

  .page-products .cat-split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.7fr);
    gap: 56px;
  }

  .page-products .cat-version-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr) minmax(0, 0.62fr);
    align-items: start;
    gap: 26px;
  }

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

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

  .page-products .cat-pick:nth-child(2) {
    margin-top: 22px;
  }

  .page-products .cat-fig--tall img {
    max-height: 520px;
    object-fit: cover;
    object-position: top;
  }
}

@media (min-width: 1280px) {
  .page-products .cat-scene {
    padding: 24px 22px 26px;
  }

  .page-products .cat-scene--lead {
    padding: 32px 28px 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .cat-pick,
  .page-products .cat-chip {
    transition: none;
  }

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

.page-products {
  --tint: transparent;
}