/* ===== 页面基础样式 ===== */
html,
body {
  margin: 0;
  padding: 0;
  background: #000;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  position: relative;
  height: auto;
  min-height: 100%;
  overflow-x: hidden;
}

#app > div {
  width: 100% !important;
}

/* 防止图片超出容器或被拉伸 */
#app img {
  max-width: 100%;
}

/* ===== 安装教程入口按钮 ===== */
.install-doc-entry {
  display: none;
  margin: 16px auto 0;
  width: 260px;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.78);
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.install-doc-entry:active {
  opacity: 0.8;
}