body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial;
  background: #f5f6f7;
  text-align: center;
}

/* 微信遮罩 */
#wechat-tip {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  color: #fff;

  display: flex;
  align-items: center;
  justify-content: center;
}

.tip-box {
  font-size: 20px;
  line-height: 1.6;
}

/* 主内容 */
#main-content {
  padding: 40px 20px;
}

h1 {
  margin-bottom: 30px;
}

/* 列表 */
.app-list {
  max-width: 400px;
  margin: 0 auto;
}

/* 卡片 */
.app-card {
  background: #fff;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.app-card h2 {
  margin-bottom: 15px;
}

/* 按钮 */
.btn {
  display: inline-block;
  padding: 12px 24px;
  background: #007bff;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
}