/* Approved concept 3: a white document tab with a blue top edge. */
.pv-scroll-top {
  position: fixed;
  right: max(24px, env(safe-area-inset-right));
  bottom: calc(24px + env(safe-area-inset-bottom) + var(--pv-bottom-clearance, 0px));
  z-index: 45;
  box-sizing: border-box;
  width: 56px;
  min-height: 64px;
  padding: 9px 8px 7px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: 1px solid #b5c5df;
  border-top: 5px solid #2853df;
  border-radius: 12px 12px 5px 5px;
  background: #fff;
  color: #2853df;
  box-shadow: 0 4px 16px #1b355c24;
  font-family: var(--font-ui, 'Pretendard', sans-serif);
  font-size: var(--text-label, .875rem);
  font-weight: 600;
  line-height: 1.25;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color .15s, box-shadow .15s;
}
.pv-scroll-top[hidden] { display: none !important; }
.pv-scroll-top svg { flex: none; }
.pv-scroll-top:hover { background: #f0f5ff; box-shadow: 0 6px 20px #1b355c33; }
.pv-scroll-top:focus-visible { outline: 3px solid #2853df; outline-offset: 4px; }
@media (max-width: 47.999rem) {
  .pv-scroll-top {
    right: max(16px, env(safe-area-inset-right));
    bottom: calc(16px + env(safe-area-inset-bottom) + var(--pv-bottom-clearance, 0px));
    width: 48px;
    min-height: 56px;
    padding: 6px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .pv-scroll-top { transition: none; }
  html:has(.pv-scroll-top) { scroll-behavior: auto !important; }
}