.page-products {
  --cat-hair: rgba(199, 211, 209, 0.62);
  --cat-card: #FBFAF5;
  --cat-tile: #E9E6DC;
  --cat-body: #3A4B4F;
  --cat-body-soft: rgba(244, 242, 236, 0.74);
  background: var(--c-paper);
  color: var(--c-graphite);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-products p {
  margin: 0;
}

.page-products ul,
.page-products ol,
.page-products dl,
.page-products figure {
  margin: 0;
  padding: 0;
}

.page-products li {
  list-style: none;
}

.page-products i {
  display: block;
}

/* ---------- 首屏 ---------- */
.page-products .cat-hero {
  padding-top: clamp(22px, 4vw, 42px);
}

.page-products .cat-hero .eyebrow {
  margin-top: clamp(18px, 3vw, 30px);
}

.page-products .cat-hero h1 {
  margin-top: 12px;
  font-size: clamp(2.05rem, 6.4vw, 4.4rem);
  line-height: 1.02;
  max-width: 18ch;
}

.page-products .cat-lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 64ch;
  font-size: clamp(0.98rem, 1.6vw, 1.12rem);
  line-height: 1.85;
  color: var(--cat-body);
}

.page-products .cat-hero__frame {
  position: relative;
  margin-top: clamp(26px, 4vw, 48px);
  background: var(--c-ink);
}

.page-products .cat-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-products .cat-hero__cap {
  position: absolute;
  left: var(--gutter);
  bottom: clamp(12px, 2vw, 24px);
  padding: 7px 13px;
  background: rgba(11, 27, 30, 0.58);
  backdrop-filter: blur(8px);
  color: var(--c-paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

/* ---------- 章节跳转带 ---------- */
.page-products .cat-jump {
  position: sticky;
  top: var(--bar-h);
  z-index: 6;
  background: rgba(244, 242, 236, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cat-hair);
}

.page-products .cat-jump__inner {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding: 8px var(--gutter);
  scrollbar-width: none;
}

.page-products .cat-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-products .cat-jump__link {
  flex: 0 0 auto;
  display: grid;
  gap: 3px;
  min-width: 112px;
  padding: 9px 16px;
  border-left: 1px solid var(--cat-hair);
  text-decoration: none;
  color: var(--c-graphite);
  transition: background 0.28s var(--ease), color 0.28s var(--ease);
}

.page-products .cat-jump__link:first-child {
  border-left: 0;
}

.page-products .cat-jump__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--c-signal-deep);
}

.page-products .cat-jump__label {
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
}

.page-products .cat-jump__link:hover,
.page-products .cat-jump__link:focus-visible {
  background: var(--c-ink);
  color: var(--c-paper);
  outline: none;
}

.page-products .cat-jump__link:hover .cat-jump__idx,
.page-products .cat-jump__link:focus-visible .cat-jump__idx {
  color: var(--c-signal-hi);
}

/* ---------- 章节骨架 ---------- */
.page-products .cat-sec {
  padding-block: clamp(46px, 6.5vw, 90px);
}

.page-products .cat-sec--tint {
  background: var(--cat-tile);
}

.page-products .cat-sec--ink {
  background: var(--c-ink);
  color: var(--c-paper);
}

.page-products .cat-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

.page-products .cat-head__idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--c-signal-deep);
}

.page-products .cat-head__title {
  font-size: clamp(1.5rem, 3.3vw, 2.35rem);
  line-height: 1.14;
}

.page-products .cat-head__note {
  max-width: 68ch;
  font-size: clamp(0.95rem, 1.4vw, 1.04rem);
  line-height: 1.82;
  color: var(--cat-body);
}

.page-products .cat-sec--ink .cat-head__idx {
  color: var(--c-signal);
}

.page-products .cat-sec--ink .cat-head__note {
  color: var(--cat-body-soft);
}

@media (min-width: 880px) {
  .page-products .cat-head {
    grid-template-columns: 210px minmax(0, 1fr);
    column-gap: clamp(24px, 3vw, 52px);
    row-gap: 12px;
    align-items: start;
  }

  .page-products .cat-head__idx {
    grid-row: 1 / span 2;
    padding-top: 8px;
  }

  .page-products .cat-head__title,
  .page-products .cat-head__note {
    grid-column: 2;
  }
}

/* ---------- 01 三维度 ---------- */
.page-products .cat-bands {
  display: grid;
  gap: 0;
}

.page-products .cat-band {
  padding-block: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--cat-hair);
}

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

.page-products .cat-band::before {
  content: "";
  display: block;
  width: 42px;
  height: 2px;
  margin-bottom: 14px;
  background: var(--c-signal);
}

.page-products .cat-band__name {
  font-size: clamp(1.1rem, 1.9vw, 1.38rem);
  letter-spacing: 0.02em;
}

.page-products .cat-band__body {
  margin-top: 10px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--cat-body);
}

.page-products .cat-band__meta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--c-jade);
}

@media (min-width: 820px) {
  .page-products .cat-bands {
    grid-template-columns: 1.15fr 1fr 1fr;
    column-gap: clamp(20px, 3vw, 44px);
  }

  .page-products .cat-band {
    border-top: 0;
    padding-top: 20px;
  }

  .page-products .cat-band::before {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--c-signal) 0 38%, var(--cat-hair) 38% 100%);
  }
}

.page-products .cat-route {
  margin-top: clamp(24px, 3.6vw, 42px);
  padding: clamp(16px, 2.6vw, 28px);
  border: 1px solid var(--cat-hair);
  background: rgba(255, 255, 255, 0.42);
}

.page-products .cat-route__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-signal-deep);
}

.page-products .cat-route__steps {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.page-products .cat-route__step {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--cat-body);
}

.page-products .cat-route__n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-signal);
}

@media (min-width: 760px) {
  .page-products .cat-route__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-products .cat-route__step {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 0 16px;
    border-left: 1px solid var(--cat-hair);
  }

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

/* ---------- 02 场景棋盘 ---------- */
.page-products .scene-board {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-products .scene-card {
  display: flex;
  flex-direction: column;
  background: var(--cat-card);
  border: 1px solid var(--cat-hair);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.page-products .scene-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-signal);
  box-shadow: 0 20px 40px -30px rgba(11, 27, 30, 0.7);
}

.page-products .scene-card__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-products .scene-card__body {
  display: grid;
  gap: 12px;
  padding: clamp(16px, 2.2vw, 24px);
}

.page-products .scene-card__title {
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
  line-height: 1.3;
}

.page-products .scene-card__io {
  display: grid;
  gap: 8px;
}

.page-products .scene-card__io > div {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-products .scene-card__io dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--c-jade);
}

.page-products .scene-card__io dd {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--cat-body);
}

.page-products .scene-card__hint {
  padding-top: 10px;
  border-top: 1px dashed var(--cat-hair);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--c-signal-deep);
}

@media (min-width: 900px) {
  .page-products .scene-board {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-products .scene-card:nth-child(1) {
    grid-column: span 5;
  }

  .page-products .scene-card:nth-child(2) {
    grid-column: span 7;
    margin-top: 26px;
  }

  .page-products .scene-card:nth-child(3) {
    grid-column: span 4;
  }

  .page-products .scene-card:nth-child(4) {
    grid-column: span 4;
    margin-top: 22px;
  }

  .page-products .scene-card:nth-child(5) {
    grid-column: span 4;
    margin-top: 44px;
  }
}

/* ---------- 03 索引大屏 ---------- */
.page-products .screen-wrap {
  display: grid;
  gap: clamp(18px, 2.8vw, 32px);
}

.page-products .screen-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border: 1px solid var(--c-water);
}

.page-products .screen-panel {
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--c-ink-2);
  border: 1px solid var(--c-water);
}

.page-products .screen-chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .screen-read {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--c-water);
}

.page-products .screen-read__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-data);
}

.page-products .screen-read__body {
  margin-top: 10px;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--cat-body-soft);
}

.page-products .screen-ticker {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--c-water);
  height: 158px;
  overflow: hidden;
  mask-image: linear-gradient(180deg, transparent 0, #000 14%, #000 86%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 14%, #000 86%, transparent 100%);
}

.page-products .screen-ticker__head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-signal-hi);
}

.page-products .screen-ticker__list {
  animation: cat-ticker 26s linear infinite;
}

.page-products .screen-ticker:hover .screen-ticker__list {
  animation-play-state: paused;
}

.page-products .screen-ticker__list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  padding: 8px 0;
  font-size: 0.86rem;
  line-height: 1.5;
  color: rgba(244, 242, 236, 0.9);
}

.page-products .screen-ticker__n {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--c-data);
}

.page-products .screen-foot {
  margin-top: 16px;
  font-size: 0.84rem;
  line-height: 1.75;
  color: rgba(244, 242, 236, 0.6);
}

@keyframes cat-ticker {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-50%);
  }
}

@media (min-width: 960px) {
  .page-products .screen-wrap {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: start;
  }

  .page-products .screen-figure img {
    aspect-ratio: 7 / 9;
  }
}

/* ---------- 04 适配清单 ---------- */
.page-products .list-layout {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
}

.page-products .stage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-products .stage-cell {
  display: grid;
  gap: 10px;
  padding: 12px;
  background: var(--cat-card);
  border: 1px solid var(--cat-hair);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-products .stage-cell:hover {
  border-color: var(--c-jade);
  background: #ffffff;
}

.page-products .stage-cell__name {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-graphite);
}

.page-products .stage-cell__blocks {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.page-products .stage-block {
  width: 9px;
  height: 9px;
  background: var(--c-jade);
  opacity: 0.85;
}

.page-products .stage-cell__count {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-signal-deep);
}

.page-products .list-notes {
  display: grid;
  gap: 0;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-products .list-note {
  padding-block: 14px;
  border-top: 1px solid var(--cat-hair);
}

.page-products .list-note__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-jade);
}

.page-products .list-note__v {
  margin-top: 8px;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--cat-body);
}

.page-products .list-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  border: 1px solid var(--cat-hair);
}

@media (min-width: 720px) {
  .page-products .stage-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-products .list-layout {
    grid-template-columns: minmax(0, 1fr) 290px;
    align-items: start;
  }

  .page-products .stage-grid {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

/* ---------- 05 接口与订阅 ---------- */
.page-products .duo {
  display: grid;
  gap: clamp(16px, 2.6vw, 30px);
}

.page-products .api-card {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3vw, 34px);
  background: var(--c-ink);
  color: var(--c-paper);
}

.page-products .api-card__bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-products .api-card__inner {
  position: relative;
  z-index: 1;
}

.page-products .api-card__title {
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
}

.page-products .api-card__body {
  margin-top: 12px;
  max-width: 54ch;
  font-size: 0.94rem;
  line-height: 1.82;
  color: var(--cat-body-soft);
}

.page-products .api-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-products .api-tag {
  padding: 5px 11px;
  border: 1px solid rgba(77, 240, 169, 0.42);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-data);
}

.page-products .fold {
  margin-top: 14px;
  border-top: 1px solid var(--c-water);
}

.page-products .fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 0;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--c-paper);
  list-style: none;
}

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

.page-products .fold summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--c-data);
}

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

.page-products .field-list {
  display: grid;
  gap: 8px;
  padding-bottom: 16px;
}

.page-products .field-list li {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-products .field-name {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--c-data);
  word-break: break-word;
}

.page-products .field-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(244, 242, 236, 0.72);
}

.page-products .fold-body {
  padding-bottom: 16px;
  font-size: 0.86rem;
  line-height: 1.8;
  color: rgba(244, 242, 236, 0.74);
}

.page-products .sub-card {
  padding: clamp(20px, 3vw, 34px);
  background: var(--cat-card);
  border: 1px solid var(--cat-hair);
}

.page-products .sub-card__title {
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
}

.page-products .sub-card__body {
  margin-top: 12px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--cat-body);
}

.page-products .sub-list {
  margin-top: 16px;
}

.page-products .sub-list li {
  display: grid;
  gap: 5px;
  padding: 12px 0;
  border-top: 1px solid var(--cat-hair);
}

.page-products .sub-list__name {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--c-graphite);
}

.page-products .sub-list__desc {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--cat-body);
}

.page-products .sub-combos {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-products .sub-combo {
  padding: 11px 14px;
  background: var(--c-paper);
  border-left: 3px solid var(--c-signal);
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--cat-body);
}

.page-products .sub-combo__k {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--c-signal-deep);
}

@media (min-width: 900px) {
  .page-products .duo {
    grid-template-columns: 1.08fr 0.92fr;
    align-items: start;
  }
}

/* ---------- 收尾 ---------- */
.page-products .cat-tail {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--cat-hair);
}

.page-products .cat-tail__text {
  max-width: 66ch;
  font-size: 0.94rem;
  line-height: 1.84;
  color: var(--cat-body);
}

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

@media (prefers-reduced-motion: reduce) {
  .page-products .screen-ticker__list {
    animation: none;
  }

  .page-products .scene-card,
  .page-products .stage-cell,
  .page-products .cat-jump__link {
    transition: none;
  }

  .page-products .scene-card:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>