/* 通用样式 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  user-select: none;
}

/* Telegram Mini App 视口适配：缩放内容以填满屏幕 */
.viewport-scaler {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewport-scaler > * {
  transform-origin: center center;
}

img {
  max-width: 100%;
  vertical-align: middle;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font: inherit;
}

a {
  text-decoration: none;
  color: inherit;
}