.page-products {
  --cat-tree-w: 244px;
  --cat-board-gap: 28px;
  --cat-line: rgba(10, 22, 34, 0.12);
  --cat-line-soft: rgba(10, 22, 34, 0.08);
  --cat-ink-soft: #2c4457;
  --cat-teal: #0B5B74;

  background: var(--ink-deep);
  color: var(--text-on-ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-products .cat-hero {
  position: relative;
  padding: 26px 0 64px;
  overflow: clip;
}

.page-products .cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(166deg, #0E2C47 0%, rgba(14, 44, 71, 0) 78%);
  clip-path: polygon(0 0, 100% 0, 100% 66%, 0 100%);
  pointer-events: none;
}

.page-products .cat-hero-wedge {
  position: absolute;
  top: -16%;
  right: -10%;
  width: 44%;
  height: 76%;
  background: var(--neon);
  opacity: 0.075;
  transform: rotate(-11deg);
  clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
  pointer-events: none;
}

.page-products .cat-hero-inner {
  position: relative;
  z-index: 2;
}

.page-products .cat-crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-products .cat-crumb li {
  color: var(--text-on-ink-dim);
}

.page-products .cat-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-products .cat-crumb a {
  color: var(--mist);
  text-decoration: none;
}

.page-products .cat-crumb a:hover,
.page-products .cat-crumb a:focus-visible {
  color: var(--neon);
  text-decoration: underline;
}

.page-products .cat-hero-label {
  color: var(--neon);
  margin: 0 0 14px;
}

.page-products .cat-hero-title {
  margin: 0 0 20px;
  max-width: 17ch;
  font-size: clamp(32px, 5.6vw, 66px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .cat-hero-lead {
  margin: 0 0 34px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-on-ink);
}

.page-products .cat-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 44px;
  margin: 0 0 34px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .cat-hero-facts > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-products .cat-hero-facts dt {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-products .cat-hero-facts dd {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--neon);
}

.page-products .cat-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-products .btn--ghost {
  border-color: var(--line-strong);
  color: var(--paper);
}

.page-products .btn--ghost:hover,
.page-products .btn--ghost:focus-visible {
  border-color: var(--neon);
  color: var(--neon);
}

.page-products .btn--quiet {
  color: var(--electric);
}

.page-products .btn--quiet:hover,
.page-products .btn--quiet:focus-visible {
  color: var(--neon);
}

/* ---------- 区块标题 ---------- */

.page-products .cat-section-title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-products .cat-section-sub {
  margin: 0 0 40px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-on-ink-dim);
}

/* ---------- 模块区布局 ---------- */

.page-products .cat-modules {
  padding: 8px 0 76px;
}

.page-products .cat-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cat-board-gap);
  align-items: start;
}

/* ---------- 左树 ---------- */

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

.page-products .cat-tree-label {
  margin: 0 0 18px;
  color: var(--mist);
}

.page-products .cat-tree-lines {
  position: absolute;
  left: 6px;
  top: 48px;
  bottom: 12px;
  width: 2px;
  color: var(--line-strong);
  pointer-events: none;
}

.page-products .cat-tree-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .tree-node {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "dot name"
    "dot note";
  column-gap: 12px;
  row-gap: 3px;
  padding: 12px 14px 12px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.page-products .tree-dot {
  grid-area: dot;
  align-self: start;
  margin-top: 5px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--neon);
  border-radius: 50%;
  background: var(--ink-deep);
  transition: background-color 180ms ease;
}

.page-products .tree-name {
  grid-area: name;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .tree-note {
  grid-area: note;
  font-size: 12px;
  line-height: 1.55;
  color: var(--mist);
}

.page-products .tree-node:hover,
.page-products .tree-node:focus-visible {
  background: rgba(53, 240, 208, 0.07);
  border-color: rgba(53, 240, 208, 0.38);
}

.page-products .tree-node:hover .tree-dot,
.page-products .tree-node:focus-visible .tree-dot {
  background: var(--neon);
}

/* ---------- 右侧画板 ---------- */

.page-products .cat-boards {
  display: flex;
  flex-direction: column;
  gap: var(--cat-board-gap);
}

.page-products .board {
  position: relative;
  padding: 26px 20px;
  background: var(--paper);
  color: var(--ink-black);
  border: 1px solid rgba(10, 22, 34, 0.14);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  scroll-margin-top: 92px;
}

.page-products [data-reveal] {
  transition: opacity 400ms ease, transform 400ms ease;
}

.page-products [data-reveal][data-reveal-ready]:not(.is-visible) {
  opacity: 0;
  transform: translateY(8px);
}

@media (prefers-reduced-motion: reduce) {
  .page-products [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.page-products .board-index {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 9px;
  background: var(--neon);
  color: var(--ink-black);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  border-radius: var(--radius);
}

.page-products .board-title {
  margin: 0 0 12px;
  font-size: clamp(21px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink-black);
}

.page-products .board-lead {
  margin: 0 0 24px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cat-ink-soft);
}

.page-products .board-foot-note {
  margin: 0 0 18px;
  padding: 14px 16px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 209, 102, 0.14);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--cat-ink-soft);
}

/* 图 ---------- */

.page-products .board-figure {
  margin: 0 0 24px;
}

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

.page-products .board-figure figcaption {
  margin-top: 10px;
  padding-top: 9px;
  border-top: 1px solid var(--cat-line-soft);
  font-size: 12px;
  line-height: 1.62;
  color: #4d6478;
}

/* 字段列表 ---------- */

.page-products .field-grid {
  margin: 0 0 24px;
  border-top: 1px solid rgba(10, 22, 34, 0.18);
}

.page-products .field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--cat-line);
}

.page-products .field-key {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--ink-black);
}

.page-products .field-row--coral .field-key {
  color: #a83e12;
}

.page-products .field-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--cat-ink-soft);
}

.page-products .field-body abbr {
  text-decoration: underline dotted var(--cat-teal);
  text-underline-offset: 3px;
  cursor: help;
}

/* 图文分栏 ---------- */

.page-products .board-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
  margin: 0 0 24px;
}

.page-products .board-split .prose p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--cat-ink-soft);
}

.page-products .board-split .prose p:last-child {
  margin-bottom: 0;
}

/* 步骤列表 ---------- */

.page-products .step-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  counter-reset: cat-step;
}

.page-products .step-list li {
  counter-increment: cat-step;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--cat-line);
  font-size: 14px;
  line-height: 1.72;
  color: var(--cat-ink-soft);
}

.page-products .step-list li::before {
  content: counter(cat-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  padding-top: 3px;
  color: var(--cat-teal);
}

/* 提示条 ---------- */

.page-products .note-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 0 0 22px;
  padding: 16px 18px;
  background: rgba(53, 240, 208, 0.13);
  border: 1px solid rgba(11, 91, 116, 0.28);
  border-radius: var(--radius);
}

.page-products .note-strip-key {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cat-teal);
}

.page-products .note-strip-body {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--cat-ink-soft);
}

/* 三层结构 ---------- */

.page-products .layer-list {
  display: grid;
  gap: 1px;
  margin: 0 0 24px;
  background: var(--cat-line);
  border: 1px solid var(--cat-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .layer-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 18px;
  background: var(--paper);
}

.page-products .layer-item:nth-child(even) {
  background: #EDF2F5;
}

.page-products .layer-num {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cat-teal);
}

.page-products .layer-name {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-black);
}

.page-products .layer-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--cat-ink-soft);
}

/* 版本对照表 ---------- */

.page-products .table-scroll {
  margin: 0 0 22px;
  overflow-x: auto;
  border: 1px solid var(--cat-line);
  border-radius: var(--radius);
}

.page-products .cat-version {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 13px;
}

.page-products .cat-version caption {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cat-teal);
  background: var(--paper);
  border-bottom: 1px solid var(--cat-line);
}

.page-products .cat-version th,
.page-products .cat-version td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  border-bottom: 1px solid var(--cat-line);
}

.page-products .cat-version thead th {
  background: #E3EBF0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #16334a;
  border-bottom: 1px solid rgba(10, 22, 34, 0.26);
}

.page-products .cat-version tbody th {
  font-weight: 700;
  color: var(--ink-black);
  white-space: nowrap;
}

.page-products .cat-version tbody td {
  color: var(--cat-ink-soft);
}

.page-products .cat-version tbody tr {
  transition: background-color 160ms ease;
}

.page-products .cat-version tbody tr:hover {
  background: var(--wash);
}

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

/* 展开组 ---------- */

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

.page-products .expand-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 15px 0;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  text-align: left;
  color: var(--ink-black);
  transition: color 160ms ease;
}

.page-products .expand-btn:hover,
.page-products .expand-btn:focus-visible {
  color: var(--cat-teal);
}

.page-products .expand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  color: var(--cat-teal);
}

.page-products .expand-mark::before,
.page-products .expand-mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.page-products .expand-mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 1.5px;
}

.page-products .expand-mark::after {
  left: 7px;
  top: 0;
  width: 1.5px;
  height: 16px;
}

.page-products .expand-btn[aria-expanded="true"] .expand-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-products .expand-body {
  overflow: hidden;
}

.page-products .expand-inner {
  padding: 2px 0 20px;
  max-width: 68ch;
}

.page-products .expand-inner p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--cat-ink-soft);
}

.page-products .expand-inner p:last-child {
  margin-bottom: 0;
}

/* ---------- 横向主题带 ---------- */

.page-products .cat-band {
  padding: 52px 0;
  background: var(--ink-layer);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .cat-band-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  align-items: flex-end;
  justify-content: space-between;
}

.page-products .cat-band-copy {
  flex: 1 1 320px;
}

.page-products .cat-band-copy .label {
  color: var(--neon);
}

.page-products .cat-band-title {
  margin: 10px 0 12px;
  font-size: clamp(22px, 3.2vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--paper);
}

.page-products .cat-band-note {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-on-ink-dim);
}

.page-products .cat-band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 收尾入口 ---------- */

.page-products .cat-outro {
  padding: 60px 0 72px;
}

.page-products .cat-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 24px 0 28px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-products .cat-links li {
  border-bottom: 1px solid var(--line);
}

.page-products .cat-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 2px;
  font-size: 15px;
  color: var(--text-on-ink);
  text-decoration: none;
  transition: color 160ms ease, padding-left 160ms ease;
}

.page-products .cat-links a::after {
  content: "→";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--mist);
  transition: color 160ms ease, transform 160ms ease;
}

.page-products .cat-links a:hover,
.page-products .cat-links a:focus-visible {
  color: var(--neon);
  padding-left: 8px;
}

.page-products .cat-links a:hover::after,
.page-products .cat-links a:focus-visible::after {
  color: var(--coral);
}

.page-products .cat-outro-note {
  margin: 0;
  max-width: 66ch;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--text-on-ink-dim);
}

/* ---------- 断点 ---------- */

@media (max-width: 959px) {
  .page-products .cat-tree {
    padding-left: 0;
  }

  .page-products .cat-tree-lines {
    display: none;
  }

  .page-products .cat-tree-label {
    margin-bottom: 12px;
  }

  .page-products .cat-tree-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 10px;
    scrollbar-width: thin;
  }

  .page-products .cat-tree-list li {
    flex: 0 0 auto;
  }

  .page-products .tree-node {
    grid-template-areas: "dot name";
    grid-template-columns: auto auto;
    align-items: center;
    padding: 10px 14px;
    border-color: var(--line);
  }

  .page-products .tree-dot {
    margin-top: 0;
    align-self: center;
  }

  .page-products .tree-note {
    display: none;
  }
}

@media (min-width: 640px) {
  .page-products .board {
    padding: 30px 28px;
  }

  .page-products .field-row {
    grid-template-columns: 168px 1fr;
    gap: 24px;
    align-items: baseline;
  }

  .page-products .layer-item {
    grid-template-columns: 56px 1fr;
    gap: 18px;
    align-items: baseline;
  }

  .page-products .note-strip {
    grid-template-columns: auto 1fr;
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-products .cat-layout {
    grid-template-columns: var(--cat-tree-w) 1fr;
    gap: 44px;
  }

  .page-products .cat-tree {
    position: sticky;
    top: 96px;
  }

  .page-products .board {
    padding: 36px 34px;
  }
}

@media (min-width: 1100px) {
  .page-products .board-split {
    grid-template-columns: 258px 1fr;
    gap: 30px;
  }

  .page-products .board-split--reverse {
    grid-template-columns: 1fr 258px;
  }
}

@media (min-width: 760px) and (max-width: 1099px) {
  .page-products .board-split {
    grid-template-columns: 220px 1fr;
    gap: 24px;
  }
}

@media (min-width: 720px) {
  .page-products .cat-links {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 32px;
  }
}
<<<END>>>