.page-products {
  --pp-border: 3px solid var(--c-ink);
  --pp-gap: 1.5rem;
  --pp-soft-on-dark: rgba(244, 247, 245, 0.78);
  background: var(--c-mist);
  color: var(--c-ink);
  overflow-x: hidden;
}

.page-products .section {
  padding: 3rem 0;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-products p {
  line-height: 1.8;
}

.page-products .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--c-slate);
}

.page-products .breadcrumb li + li::before {
  content: "/";
  margin-right: 0.4rem;
  color: var(--c-slate);
}

.page-products .breadcrumb a {
  color: var(--c-channel);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-products .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-coral);
  margin: 0 0 0.6rem;
}

.page-products .wide-head {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.page-products .wide-head h2 {
  font-size: clamp(1.6rem, 4.4vw, 2.7rem);
  color: var(--c-deep);
  margin-bottom: 0.9rem;
}

.page-products .wide-head .lede {
  font-size: 1.02rem;
  color: var(--c-ink-soft);
  margin: 0;
}

/* ---------- 首屏 ---------- */
.products-hero__grid {
  display: grid;
  gap: var(--pp-gap);
}

.products-hero__lead h1 {
  font-size: clamp(1.85rem, 6.4vw, 3.6rem);
  color: var(--c-deep);
  margin: 0 0 1rem;
}

.products-hero__lead .lede {
  font-size: 1.06rem;
  color: var(--c-ink-soft);
  max-width: 40rem;
  margin: 0;
}

.products-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.products-hero__side {
  border: var(--pp-border);
  background: var(--c-mist);
  box-shadow: var(--shadow-hard);
  padding: 1.1rem 1.1rem 1.25rem;
}

.products-hero__side .plaque {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0 0 0.9rem;
  padding-bottom: 0.7rem;
  border-bottom: 2px solid var(--c-ink);
}

.products-hero__side .plaque__num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-coral);
  line-height: 1;
}

.products-hero__side .plaque__label {
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--c-slate);
}

.status-stack {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.status-stack li {
  border-left: 4px solid var(--c-electric);
  padding-left: 0.75rem;
}

.status-stack__tag {
  display: inline-block;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--c-channel);
  margin-bottom: 0.25rem;
}

.status-stack p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--c-ink-soft);
}

.products-hero__figure {
  margin: 2rem 0 0;
}

/* ---------- 章节索引条 ---------- */
.page-products .products-rail {
  background: var(--c-deep);
  border-top: var(--pp-border);
  border-bottom: var(--pp-border);
  padding: 0.7rem 0;
}

.page-products .products-rail .section-rail__list {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0.25rem;
  overflow-x: auto;
}

.page-products .products-rail .section-rail__link {
  display: inline-block;
  white-space: nowrap;
  padding: 0.42rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--c-mist);
  text-decoration: none;
  border: 2px solid var(--c-channel);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-products .products-rail .section-rail__link:hover,
.page-products .products-rail .section-rail__link:focus-visible {
  border-color: var(--c-electric);
}

.page-products .products-rail .section-rail__link[aria-current="true"] {
  background: var(--c-coral);
  border-color: var(--c-coral);
  color: var(--c-ink);
}

/* ---------- 安卓旧版服务范围 ---------- */
.page-products .products-legacy {
  color: var(--c-ink);
}

.legacy-split {
  display: grid;
  gap: var(--pp-gap);
}

.legacy-split__copy h3 {
  font-size: 1.15rem;
  color: var(--c-deep);
  margin-bottom: 0.7rem;
}

.legacy-split__copy p {
  margin: 0 0 1rem;
  color: var(--c-ink-soft);
}

.fact-list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.fact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
  border-bottom: 2px dashed rgba(16, 24, 32, 0.25);
  padding-bottom: 0.5rem;
  font-size: 0.92rem;
}

.fact-list .mono {
  font-size: 0.82rem;
  color: var(--c-deep);
  background: var(--c-warm);
  border: 2px solid var(--c-ink);
  padding: 0.1rem 0.45rem;
}

.legacy-details {
  border: var(--pp-border);
  background: var(--c-warm);
  box-shadow: 5px 5px 0 var(--c-ink);
}

.legacy-details > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--c-deep);
}

.legacy-details > summary::-webkit-details-marker {
  display: none;
}

.legacy-details > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--c-coral);
  line-height: 1;
}

.legacy-details[open] > summary::after {
  content: "–";
}

.legacy-details__body {
  padding: 0 1rem 1rem;
  font-size: 0.92rem;
  color: var(--c-ink-soft);
}

.legacy-details__body p {
  margin: 0 0 0.75rem;
}

.legacy-details__body a {
  color: var(--c-deep);
  border-bottom: 1px solid currentColor;
}

.legacy-split__figure {
  margin: 0;
}

/* ---------- 旧版面板对照 ---------- */
.panel-compare {
  display: grid;
  gap: 1rem;
}

.panel-compare__col {
  border: var(--pp-border);
  padding: 1.1rem 1.1rem 1.3rem;
}

.panel-compare__col--old {
  background: var(--c-sand);
  color: var(--c-ink);
}

.panel-compare__col--new {
  background: var(--c-channel);
  color: var(--c-mist);
}

.panel-compare__label {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  margin: 0 0 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid currentColor;
}

.panel-compare__text {
  margin: 0;
  font-size: 0.94rem;
}

.panel-compare__col--old .panel-compare__text {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.75;
}

.products-map__figure {
  margin: 1.75rem 0;
}

.compare-table-wrap {
  border: var(--pp-border);
  background: var(--c-mist);
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  min-width: 32rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.compare-table caption {
  text-align: left;
  padding: 0.85rem 1rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--c-deep);
  border-bottom: var(--pp-border);
}

.compare-table th,
.compare-table td {
  text-align: left;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid rgba(16, 24, 32, 0.16);
  vertical-align: top;
}

.compare-table thead th {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
}

.compare-table thead th:first-child {
  background: var(--c-sand);
  color: var(--c-ink);
}

.compare-table thead th:last-child {
  background: var(--c-deep);
  color: var(--c-mist);
}

.compare-table tbody td:first-child {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-slate);
}

.compare-table tbody td:last-child {
  font-weight: 600;
  color: var(--c-deep);
}

.compare-table tbody tr:nth-child(even) {
  background: rgba(217, 198, 165, 0.22);
}

.map-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* ---------- 移动端注册 ---------- */
.mobile-split {
  display: grid;
  gap: 2rem;
}

.mobile-split__steps h2 {
  font-size: clamp(1.55rem, 4.4vw, 2.5rem);
  color: var(--c-deep);
  margin-bottom: 0.9rem;
}

.mobile-split__steps > p {
  margin: 0 0 1.5rem;
  color: var(--c-ink-soft);
  max-width: 40rem;
}

.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  counter-reset: none;
}

.step-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  border: var(--pp-border);
  background: var(--c-mist);
  padding: 1rem 1rem 1.1rem;
  box-shadow: 5px 5px 0 var(--c-ink);
}

.step-list__num {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--c-coral);
  line-height: 1;
}

.step-list__item h3 {
  font-size: 1.02rem;
  color: var(--c-deep);
  margin-bottom: 0.4rem;
}

.step-list__item p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--c-ink-soft);
}

.mobile-split__figure {
  margin: 0;
}

/* ---------- 订阅记录 ---------- */
.page-products .products-records {
  color: var(--c-mist);
}

.page-products .wide-head--on-dark h2 {
  color: var(--c-mist);
}

.page-products .wide-head--on-dark .lede {
  color: var(--pp-soft-on-dark);
}

.records-filter__group {
  border: 2px solid var(--c-electric);
  padding: 0.8rem 1rem 1rem;
  margin: 0 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.records-filter__group legend {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--c-electric);
  padding: 0 0.5rem;
}

.rec-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.rec-chip {
  display: inline-block;
  cursor: pointer;
  padding: 0.4rem 0.85rem;
  font-size: 0.84rem;
  font-family: var(--font-mono);
  color: var(--c-mist);
  border: 2px solid var(--c-mist);
  transition: background-color 0.18s ease, color 0.18s ease;
}

.rec-chip:hover {
  border-color: var(--c-coral-soft);
}

.rec-radio:checked + .rec-chip {
  background: var(--c-coral);
  border-color: var(--c-coral);
  color: var(--c-ink);
}

.rec-radio:focus-visible + .rec-chip {
  outline: 3px solid var(--c-electric);
  outline-offset: 2px;
}

.record-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.record-card {
  border: var(--pp-border);
  border-color: var(--c-electric);
  background: var(--c-ink-soft);
  padding: 1rem 1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.record-card__num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-coral);
  line-height: 1;
}

.record-card__title {
  font-size: 1.05rem;
  color: var(--c-mist);
}

.record-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--pp-soft-on-dark);
}

.record-card__meta {
  margin-top: auto;
  padding-top: 0.6rem;
  border-top: 1px dashed rgba(91, 192, 190, 0.5);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--c-electric);
}

.page-products #rec-dev-new:checked ~ .record-grid .record-card:not([data-dev~="new"]) {
  display: none;
}

.page-products #rec-dev-old:checked ~ .record-grid .record-card:not([data-dev~="old"]) {
  display: none;
}

.products-records__figure {
  margin: 2rem 0 0;
}

.records-note {
  margin: 1.5rem 0 0;
  font-size: 0.92rem;
  color: var(--pp-soft-on-dark);
  border-left: 4px solid var(--c-coral);
  padding-left: 0.9rem;
}

.records-note a {
  color: var(--c-coral-soft);
  border-bottom: 1px solid currentColor;
}

/* ---------- 迁移路径 ---------- */
.page-products .products-next {
  background: var(--c-mist);
}

.route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.route-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  border-top: var(--pp-border);
  padding-top: 1rem;
}

.route-list__num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--c-deep);
  line-height: 1;
}

.route-list__body h3 {
  font-size: 1.08rem;
  color: var(--c-deep);
  margin-bottom: 0.4rem;
}

.route-list__body p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--c-ink-soft);
}

.route-list__body a {
  color: var(--c-coral);
  font-weight: 600;
  border-bottom: 2px solid currentColor;
  text-decoration: none;
  margin-left: 0.3rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-products .section {
    padding: 4rem 0;
  }

  .record-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .panel-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .route-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

@media (min-width: 940px) {
  .products-hero__grid {
    grid-template-columns: minmax(0, 1fr) 21rem;
    align-items: start;
    gap: 2.5rem;
  }

  .legacy-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 2.5rem;
    align-items: start;
  }

  .mobile-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 2.75rem;
    align-items: start;
  }

  .step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .record-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .route-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .route-list__item {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .products-rail .section-rail__link,
  .rec-chip {
    transition: none;
  }
}
<<<END>>>