*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

/* Top progress bar for page navigation (see js/page-transition.js) */
.page-load-bar {
  position: fixed;
  z-index: 2002;
  top: 0;
  left: 0;
  right: 0;
  padding-top: env(safe-area-inset-top, 0px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.page-load-bar--visible {
  opacity: 1;
}

.page-load-bar__track {
  height: 3px;
  background: rgba(26, 111, 212, 0.12);
  overflow: hidden;
}

.page-load-bar__fill {
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, #2b7fe0 0%, #1a6fd4 55%, #4da3ff 100%);
  transition: transform 0.15s linear;
  box-shadow: 0 0 8px rgba(26, 111, 212, 0.45);
}

.page-load-bar--active .page-load-bar__fill {
  transition: none;
}

.page-load-bar--done .page-load-bar__fill {
  transition: transform 0.2s ease-out;
}

html.page-is-loading {
  cursor: progress;
}

@media (prefers-reduced-motion: reduce) {
  .page-load-bar__fill {
    transition: none;
  }
}

body {
  min-height: 100vh;
  background: #f4f8fc;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  overflow-x: hidden;
  overflow-y: auto;
}

.poster-viewport {
  width: 100%;
  display: flex;
  justify-content: center;
  overflow-x: hidden;
}

.poster-pinch-hint {
  position: absolute;
  z-index: 1000;
  left: 50%;
  bottom: max(88px, calc(env(safe-area-inset-bottom, 0px) + 72px));
  transform: translateX(-50%);
  max-width: min(92%, 340px);
  margin: 0;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.88);
  color: #f8fafc;
  font-size: 13px;
  line-height: 1.35;
  text-align: center;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.35s ease;
}

.poster-pinch-hint--hide {
  opacity: 0;
}

.poster-fit {
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
  isolation: isolate;
}

.poster-scaler {
  position: relative;
  flex-shrink: 0;
  transform-origin: 0 0;
}

.poster-stage {
  position: relative;
  transform-origin: 0 0;
  background: #fff;
}

.poster-layer {
  position: absolute;
  display: block;
  max-width: none;
  height: auto;
  user-select: none;
  -webkit-user-drag: none;
}

.poster-layer--bg {
  z-index: 0;
}

.poster-layer--content {
  z-index: 2;
}

.spot-link {
  position: absolute;
  z-index: 10;
  display: block;
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.spot-link:focus-visible {
  outline: 2px solid #1a6fd4;
  outline-offset: 2px;
}

.spot-pin-anchor {
  position: absolute;
  z-index: 12;
  pointer-events: none;
}

.spot-pin {
  display: block;
  max-width: none;
  transform-origin: center bottom;
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  .pin-pulse {
    animation: none !important;
  }
}

.btn-back-home {
  position: fixed;
  z-index: 1000;
  left: max(10px, env(safe-area-inset-left, 0px));
  top: max(10px, env(safe-area-inset-top, 0px));
  touch-action: manipulation;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 34px;
  padding: 0 12px 0 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(15, 23, 42, 0.14);
  color: #0f172a;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.16);
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
  backdrop-filter: blur(8px);
}

.btn-back-home__icon {
  font-size: 15px;
  line-height: 1;
}

.btn-back-home__label {
  position: static;
  width: auto;
  height: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: nowrap;
  border: 0;
}

.btn-back-home:hover {
  background: #fff;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.2);
  transform: translateY(-1px);
}

.btn-back-home:focus-visible {
  outline: 2px solid #1a6fd4;
  outline-offset: 2px;
}