.mobile-page {
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 22%),
    linear-gradient(180deg, #f8fbff 0%, #f1f6fc 45%, #ecf2f8 100%);
}

.mobile-page .shell {
  grid-template-columns: 1fr;
}

.mobile-page .sidebar {
  position: relative;
  top: auto;
  height: auto;
  padding: 16px 14px 12px;
  border-right: 0;
  border-bottom: 1px solid rgba(200, 210, 227, 0.72);
  background: rgba(246, 248, 252, 0.88);
}

.mobile-entry-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.mobile-page .sidebar-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scroll-snap-type: x proximity;
}

.mobile-page .sidebar-nav::-webkit-scrollbar {
  display: none;
}

.mobile-page .nav-link {
  flex: 0 0 auto;
  min-width: 116px;
  scroll-snap-align: start;
}

.mobile-page .main {
  padding: 12px;
}

.mobile-page .topbar {
  position: static;
  flex-direction: column;
  align-items: stretch;
  padding: 12px;
  border-radius: 18px;
}

.mobile-page .search-wrap {
  min-width: 0;
}

.mobile-page .chip-row {
  flex-wrap: wrap;
}

.mobile-page .hero,
.mobile-page .chapter,
.mobile-page .section-card {
  margin-top: 14px;
  padding: 16px;
  border-radius: 20px;
}

.mobile-page .hero,
.mobile-page .tier-grid,
.mobile-page .card-grid,
.mobile-page .metric-grid,
.mobile-page .flow-panel {
  grid-template-columns: 1fr;
}

.mobile-page .hero h2 {
  font-size: clamp(1.8rem, 8vw, 2.5rem);
  line-height: 1.08;
}

.mobile-page .chapter-head,
.mobile-page .section-card-head {
  flex-direction: column;
}

.mobile-page .chapter-tools {
  justify-content: flex-start;
}

.mobile-page .flow-step:not(:last-child)::after {
  content: "↓";
  right: 50%;
  top: auto;
  bottom: -18px;
  transform: translateX(50%);
}

.mobile-page .table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-page .scroll-table {
  min-width: 640px;
}

.mobile-page .button,
.mobile-page .chip,
.mobile-page .tag,
.mobile-page .count-pill {
  font-size: 0.92rem;
}