* { box-sizing: border-box; }
body {
  margin: 0;
  overflow-x: hidden;
  background: #ff4865;
  font: 14px 'Hiragino Sans GB', Arial, Helvetica, sans-serif;
}
.campaign { position: relative; width: 100%; max-width: 600px; margin: 0 auto; }
.campaign-poster { display: block; width: 100%; height: auto; }
.claim-button {
  position: absolute;
  top: 74.53125%;
  left: 50%;
  width: 90%;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  transform: scale(1) translateX(-50%);
  animation: claim-pulse .7s infinite;
  -webkit-tap-highlight-color: transparent;
}
.claim-button img { display: block; width: 100%; height: auto; }
.claim-button:focus-visible { outline: 3px solid #fff; outline-offset: 4px; border-radius: 16px; }
@keyframes claim-pulse {
  0%, 100% { transform: scale(1) translateX(-50%); }
  50% { transform: scale(1.15) translateX(-43%); }
}
.toast {
  position: fixed;
  z-index: 10;
  top: 48%;
  left: 50%;
  width: max-content;
  max-width: calc(100% - 40px);
  padding: 14px 20px;
  transform: translate(-50%, -50%);
  color: #fff;
  background: rgba(0, 0, 0, .78);
  border-radius: 6px;
  line-height: 1.7;
  text-align: center;
  pointer-events: none;
}
.toast:empty { display: none; }
.copy-dialog {
  width: min(90%, 420px);
  margin: auto;
  border: 0;
  border-radius: 14px;
  padding: 24px;
  color: #333;
  background: #fff;
  box-shadow: 0 12px 50px rgba(0, 0, 0, .25);
}
.copy-dialog:not([open]) { display: none; }
.copy-dialog::backdrop { background: rgba(0, 0, 0, .5); }
.copy-dialog.dialog-fallback { position: fixed; inset: 0; z-index: 20; height: max-content; outline: 100vmax solid rgba(0, 0, 0, .5); }
.copy-dialog h1 { margin: 0 0 12px; font-size: 20px; }
.copy-dialog p { margin: 0 0 16px; line-height: 1.7; }
.copy-dialog textarea { display: block; width: 100%; resize: none; border: 1px solid #ddd; border-radius: 6px; padding: 12px; font: 17px/1.5 Arial, sans-serif; color: #222; background: #fafafa; }
.dialog-close { display: block; width: 100%; margin-top: 18px; border: 0; border-radius: 7px; padding: 12px; color: #fff; background: #e93352; font: inherit; cursor: pointer; }
.dialog-close:focus-visible, .copy-dialog textarea:focus-visible { outline: 3px solid #a91b36; outline-offset: 3px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.noscript-message { margin: 0; padding: 16px; color: #fff; text-align: center; }
@media (prefers-reduced-motion: reduce) { .claim-button { animation: none; } }