.page-products {
  --pp-key-col: 132px;
  --pp-band-line: rgba(44, 47, 55, 0.55);
}

/* ---------- 首屏 ---------- */
.page-products .pp-intro {
  padding-top: 22px;
  padding-bottom: 6px;
}
.page-products .pp-intro .display-1 {
  max-width: 16em;
  margin: 10px 0 18px;
}
.page-products .pp-intro .lede {
  max-width: 62ch;
}
.page-products .pp-intro__tags {
  margin-top: 20px;
}
.page-products .pp-intro__tags .tag {
  text-decoration: none;
}

/* ---------- 顶部横向对比带 ---------- */
.page-products .pp-band {
  margin-top: 34px;
  padding: 38px 0 42px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background-color: var(--ink-deep);
  background-image:
    linear-gradient(180deg, rgba(22, 24, 30, 0.9) 0%, rgba(12, 13, 16, 0.98) 100%),
    linear-gradient(var(--pp-band-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--pp-band-line) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
}
.page-products .pp-band__figure {
  margin: 22px 0 6px;
}
.page-products .pp-band__note {
  margin-top: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 72ch;
}
.page-products .pp-band__note a {
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 77, 0.4);
}

/* ---------- 设备矩阵 ---------- */
.page-products .matrix-scroll {
  margin-top: 20px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}
.page-products .device-matrix {
  min-width: 760px;
}
.page-products .device-matrix__row {
  display: grid;
  grid-template-columns: var(--pp-key-col) repeat(5, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
}
.page-products .device-matrix__row:last-child {
  border-bottom: 0;
}
.page-products .device-matrix__cell {
  padding: 14px 11px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--body-text);
  border-right: 1px solid var(--line);
  transition: background 200ms var(--ease);
}
.page-products .device-matrix__row > .device-matrix__cell:last-child {
  border-right: 0;
}
.page-products .device-matrix__row--head > .device-matrix__cell {
  background: var(--cyan-deep);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  padding-top: 12px;
  padding-bottom: 12px;
}
.page-products .device-matrix__cell--corner {
  background: var(--ink) !important;
  color: var(--muted) !important;
}
.page-products .device-matrix__cell--key {
  background: var(--ink);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}
.page-products .device-matrix__row:not(.device-matrix__row--head):hover > .device-matrix__cell:not(.device-matrix__cell--key) {
  background: rgba(201, 162, 77, 0.08);
}

/* ---------- 通用章节 ---------- */
.page-products .pp-sec {
  padding-top: 52px;
}
.page-products .section-head__meta {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-top: 8px;
}

/* ---------- v3 导航逐栏 ---------- */
.page-products .pp-structure {
  display: block;
  margin-top: 26px;
}
.page-products .pp-structure__figure {
  margin: 0 0 24px;
}
.page-products .pp-columns {
  margin: 0;
  border-top: 1px solid var(--line);
}
.page-products .pp-columns__num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.page-products .pp-columns__body {
  margin: 0;
  padding: 0 0 16px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-text);
  border-bottom: 1px solid var(--line);
}
.page-products .pp-columns__body strong {
  color: var(--paper);
  font-weight: 600;
  margin-right: 4px;
}
.page-products .pp-columns {
  display: grid;
  grid-template-columns: 46px 1fr;
  column-gap: 12px;
}
.page-products .pp-columns__num {
  padding: 0 0 16px;
  border-bottom: 1px solid var(--line);
}

/* ---------- 入口编号 ---------- */
.page-products .pp-code {
  margin-top: 52px;
  padding: 44px 0 48px;
  background: var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-products .pp-code__grid {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}
.page-products .pp-code__text p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--body-text);
  max-width: 60ch;
}
.page-products .pp-code__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-products .pp-code__item {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--body-text);
  border-bottom: 1px solid var(--line);
}
.page-products .pp-code__tag {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
  text-shadow: 0 0 10px rgba(201, 162, 77, 0.35);
}
.page-products .pp-code__figure {
  margin: 0;
}
.page-products .pp-code__panel {
  border: 1px solid var(--gold);
  background: rgba(201, 162, 77, 0.06);
  padding: 22px 20px 24px;
}
.page-products .pp-code__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.page-products .pp-code__sample {
  margin: 10px 0 12px;
  font-family: var(--mono);
  font-size: 42px;
  line-height: 1.05;
  letter-spacing: 0.14em;
  color: var(--gold-light);
  text-shadow: 0 0 16px rgba(201, 162, 77, 0.35);
}
.page-products .pp-code__hint {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-text);
}
.page-products .pp-code__copy {
  border-color: var(--gold);
  color: var(--gold-light);
}

/* ---------- 文档分类 ---------- */
.page-products .pp-docs {
  margin-top: 26px;
}
.page-products .pp-docs__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-products .pp-doc-card {
  padding: 18px 18px 20px;
  background: var(--charcoal);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan-deep);
}
.page-products .pp-doc-card__idx {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.page-products .pp-doc-card__name {
  margin: 8px 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
  letter-spacing: -0.01em;
}
.page-products .pp-doc-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.page-products .pp-docs__figure {
  margin: 24px 0 0;
}
.page-products .pp-docs__time {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.page-products .pp-docs__time-title {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 600;
  color: var(--paper);
  letter-spacing: -0.01em;
}
.page-products .pp-docs__time-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.page-products .pp-docs__time-item p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 走错路情形 ---------- */
.page-products .pp-mistakes {
  margin-top: 52px;
  padding: 44px 0 48px;
  background: var(--charcoal);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-products .pp-mistakes .filter-bar {
  margin-top: 20px;
}
.page-products .pp-mistakes__layout {
  margin-top: 24px;
  display: grid;
  gap: 24px;
}
.page-products .pp-mistakes__list {
  display: grid;
  gap: 12px;
}
.page-products .pp-mistake {
  border: 1px solid var(--line);
  border-left: 3px solid var(--cinnabar);
  background: var(--ink-deep);
}
.page-products .pp-mistake .fold__summary {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  background: transparent;
  border: 0;
  text-align: left;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
  cursor: pointer;
}
.page-products .pp-mistake .fold__icon {
  font-family: var(--mono);
  font-size: 16px;
  color: var(--gold);
  flex: none;
}
.page-products .pp-mistake .fold__body {
  padding: 0 16px 16px;
}
.page-products .pp-mistake .fold__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}
.page-products .pp-mistakes__figure {
  margin: 0;
}
.page-products .pp-mistakes__note {
  margin-top: 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}
.page-products .pp-mistakes__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 210, 194, 0.4);
}

/* ---------- 版本并行 ---------- */
.page-products .pp-versions__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}
.page-products .pp-version {
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  background: var(--charcoal);
}
.page-products .pp-version--new {
  border-left: 3px solid var(--gold);
}
.page-products .pp-version--old {
  border-left: 3px solid var(--line);
}
.page-products .pp-version__mark {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  padding: 3px 10px;
  border: 1px solid currentColor;
  color: var(--gold);
}
.page-products .pp-version--old .pp-version__mark {
  color: var(--muted);
}
.page-products .pp-version__title {
  margin: 14px 0 10px;
  font-size: 19px;
  font-weight: 600;
  color: var(--paper);
}
.page-products .pp-version p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}
.page-products .pp-versions__order {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.page-products .pp-versions__order-title {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 600;
  color: var(--paper);
}
.page-products .pp-versions__steps {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-products .pp-versions__steps li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-text);
  border-bottom: 1px solid var(--line);
}
.page-products .pp-versions__step-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cyan);
}
.page-products .pp-versions__tail {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}
.page-products .pp-versions__tail a {
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 77, 0.4);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-products .pp-docs__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .pp-docs__time-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .page-products .pp-versions__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .pp-code__panel {
    align-self: start;
  }
}

@media (min-width: 960px) {
  .page-products .pp-intro {
    padding-top: 34px;
  }
  .page-products .pp-band {
    margin-top: 44px;
    padding: 48px 0 54px;
  }
  .page-products .pp-sec {
    padding-top: 68px;
  }
  .page-products .pp-structure {
    display: grid;
    grid-template-columns: minmax(0, 360px) 1fr;
    gap: 36px;
    align-items: start;
  }
  .page-products .pp-structure__figure {
    margin: 0;
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
  .page-products .pp-code {
    margin-top: 68px;
    padding: 56px 0 60px;
  }
  .page-products .pp-code__grid {
    grid-template-columns: 1fr minmax(0, 380px) minmax(0, 300px);
    gap: 32px;
    align-items: start;
  }
  .page-products .pp-docs__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .pp-docs {
    display: grid;
    grid-template-columns: 1fr minmax(0, 420px);
    gap: 32px;
    align-items: start;
  }
  .page-products .pp-docs__grid {
    grid-column: 1;
  }
  .page-products .pp-docs__figure {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin: 0;
    align-self: start;
  }
  .page-products .pp-docs__time {
    grid-column: 1;
    margin-top: 34px;
  }
  .page-products .pp-docs__time-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .page-products .pp-mistakes {
    margin-top: 68px;
    padding: 56px 0 60px;
  }
  .page-products .pp-mistakes__layout {
    grid-template-columns: 1fr minmax(0, 340px);
    gap: 36px;
    align-items: start;
  }
  .page-products .pp-versions__order {
    margin-top: 38px;
  }
}
<<<END>>>