/* ===== 全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    text-align: center;
    margin: 0;
    background: #f5f5f5;
    overflow-x: hidden;  /* ✅ 防止水平滚动 */
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}