.page-products {
  --apps-line: rgba(53, 224, 224, 0.5);
  --apps-soft: rgba(31, 62, 99, 0.55);
  --apps-gap: 18px;
}

.page-products .apps-intro {
  padding: 26px 0 18px;
  border-bottom: 1px solid var(--line);
}

.page-products .apps-intro__title {
  margin: 10px 0 14px;
  font-size: 30px;
  line-height: 1.24;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text);
  max-width: 22ch;
}

.page-products .apps-intro__lead {
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 20px;
}

.page-products .apps-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 12px 0 4px;
  border-top: 1px dashed var(--line);
}

.page-products .apps-index .scroll-spy__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-products .apps-index .scroll-spy__link .label {
  color: var(--cyan);
}

.page-products .apps-index .scroll-spy__link:hover,
.page-products .apps-index .scroll-spy__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-products .apps-index .scroll-spy__link[data-active] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-products .apps-index .scroll-spy__link[data-active] .label {
  color: var(--ink);
}

/* 五个栏目 · 技能树 */
.page-products .apps-columns__intro,
.page-products .apps-path__intro,
.page-products .apps-fields__intro,
.page-products .apps-onboard__intro,
.page-products .apps-compare__intro {
  max-width: 60ch;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  margin: 10px 0 0;
}

.page-products .apps-diagram {
  margin: 22px 0 26px;
}

.page-products .apps-tree {
  position: relative;
  margin-top: 6px;
}

.page-products .apps-node {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  margin-bottom: 14px;
  box-shadow: var(--shadow-hard);
  transition: border-color 180ms var(--ease);
}

.page-products .apps-node[open] {
  border-color: var(--cyan);
}

.page-products .apps-node__head {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
}

.page-products .apps-node__head::-webkit-details-marker {
  display: none;
}

.page-products .apps-node__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  background: var(--cyan);
  color: var(--ink);
  padding: 4px 6px;
}

.page-products .apps-node__title {
  display: block;
  min-width: 0;
}

.page-products .apps-node__name {
  display: block;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-products .apps-node__role {
  display: block;
  margin-top: 3px;
  font-size: 13px;
  color: var(--muted);
}

.page-products .apps-node__plus::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}

.page-products .apps-node[open] .apps-node__plus::before {
  content: "–";
}

.page-products .apps-node__body {
  padding: 0 16px 18px;
  border-top: 1px dashed var(--apps-soft);
}

.page-products .apps-node__body p {
  margin: 14px 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.page-products .apps-node__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-products .apps-node__list li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .apps-node__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

/* 左右分栏：桌面端 / 手机端 */
.page-products .apps-split {
  display: grid;
  gap: 22px;
  margin-top: 22px;
}

.page-products .apps-split__main p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-products .apps-split__figure {
  margin: 0;
}

.page-products .apps-facts {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .apps-facts li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  background: var(--panel);
  border-left: 3px solid var(--cyan);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .apps-facts .num {
  font-size: 20px;
  font-weight: 800;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-products .apps-callout {
  margin-top: 24px;
  padding: 18px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
}

.page-products .apps-callout p {
  margin: 8px 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  max-width: 58ch;
}

/* 两端分工筛选 */
.page-products .apps-compare__box {
  margin-top: 20px;
}

.page-products .apps-compare__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.page-products .apps-tab {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 8px 14px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color 150ms var(--ease), border-color 150ms var(--ease), background-color 150ms var(--ease);
}

.page-products .apps-tab:hover,
.page-products .apps-tab:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-products .apps-tab[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-products .apps-compare__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .apps-cap {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--apps-soft);
}

.page-products .apps-cap__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-products .apps-cap__val {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

/* 路径与步骤 */
.page-products .apps-path__figure {
  margin: 24px 0 26px;
}

.page-products .apps-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: none;
}

.page-products .apps-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 15px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-products .apps-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid var(--apps-line);
  padding: 3px 6px;
  align-self: start;
}

.page-products .apps-step__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-products .apps-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* 设备确认清单 */
.page-products .apps-checklist {
  margin-top: 30px;
  display: grid;
  gap: 20px;
}

.page-products .apps-checklist__figure {
  margin: 0;
}

.page-products .apps-checklist__panel {
  background: var(--paper);
  color: var(--paper-ink);
  border: 2px solid var(--paper-ink);
  box-shadow: var(--shadow-paper);
  padding: 18px 16px 20px;
}

.page-products .apps-checklist__panel .label {
  color: #6a4a2c;
}

.page-products .apps-checklist__title {
  margin: 8px 0 14px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper-ink);
}

.page-products .apps-checklist__items {
  display: grid;
  gap: 8px;
}

.page-products .apps-checklist__panel .check-item {
  width: 100%;
  text-align: left;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(26, 20, 16, 0.35);
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper-ink);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: border-color 150ms var(--ease), background-color 150ms var(--ease);
}

.page-products .apps-checklist__panel .check-item:hover,
.page-products .apps-checklist__panel .check-item:focus-visible {
  border-color: var(--paper-ink);
  background: rgba(255, 255, 255, 0.78);
}

.page-products .apps-checklist__panel .check-item[aria-pressed="true"] {
  border-color: var(--green);
  background: rgba(61, 214, 140, 0.16);
}

.page-products .apps-checklist__panel .check-item__state {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: #b8363f;
}

.page-products .apps-checklist__panel .check-item[aria-pressed="true"] .check-item__state {
  color: #1d7a4e;
}

.page-products .apps-checklist__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: #4a3c30;
}

/* 数据字段 */
.page-products .apps-fields__grid {
  margin-top: 22px;
  display: grid;
  gap: 14px;
}

.page-products .apps-fields__group {
  padding: 15px 16px;
}

.page-products .apps-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 10px;
}

.page-products .apps-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 5px 9px;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--ink);
}

.page-products .apps-tag--flag {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-products .apps-fields__foot {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .apps-fields__foot a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 合作接入 */
.page-products .apps-onboard__steps {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.page-products .apps-step-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  transition: border-color 180ms var(--ease);
}

.page-products .apps-step-card[open] {
  border-color: var(--orange);
}

.page-products .apps-step-card__head {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
}

.page-products .apps-step-card__head::-webkit-details-marker {
  display: none;
}

.page-products .apps-step-card__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--orange);
  border: 1px solid var(--orange);
  padding: 3px 6px;
  white-space: nowrap;
}

.page-products .apps-step-card__title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-products .apps-step-card__plus::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
}

.page-products .apps-step-card[open] .apps-step-card__plus::before {
  content: "–";
}

.page-products .apps-step-card__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--apps-soft);
}

.page-products .apps-step-card__body p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.page-products .apps-step-card__meta {
  font-size: 13px;
  color: var(--muted);
  border-left: 3px solid var(--cyan);
  padding-left: 12px;
}

.page-products .apps-cta {
  margin-top: 26px;
  padding: 20px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-bottom: 4px solid var(--orange);
  display: grid;
  gap: 16px;
}

.page-products .apps-cta__text p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  max-width: 56ch;
}

.page-products .apps-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 技能的连接线：桌面端展开为轨道 */
@media (min-width: 720px) {
  .page-products .apps-intro__title {
    font-size: 38px;
  }

  .page-products .apps-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 26px;
  }

  .page-products .apps-split--reverse {
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  }

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

  .page-products .apps-checklist {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-products .apps-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-products .apps-intro__title {
    font-size: 44px;
    max-width: 26ch;
  }

  .page-products .apps-tree {
    padding-left: 58px;
  }

  .page-products .apps-tree::before {
    content: "";
    position: absolute;
    left: 24px;
    top: 6px;
    bottom: 20px;
    width: 2px;
    background: linear-gradient(180deg, var(--cyan), rgba(53, 224, 224, 0.08));
  }

  .page-products .apps-node::before {
    content: "";
    position: absolute;
    left: -34px;
    top: 32px;
    width: 34px;
    height: 2px;
    background: var(--line);
  }

  .page-products .apps-node[open]::before {
    background: var(--cyan);
  }

  .page-products .apps-node__head {
    padding: 18px 20px;
  }

  .page-products .apps-node__body {
    padding: 0 20px 22px;
  }

  .page-products .apps-node__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px 18px;
  }

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

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

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

  .page-products .apps-step:nth-child(5) {
    grid-column: 1 / -1;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .apps-node,
  .page-products .apps-step-card,
  .page-products .apps-tab,
  .page-products .apps-checklist__panel .check-item,
  .page-products .apps-index .scroll-spy__link {
    transition: none;
  }
}