* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html,
body {
    margin: 0 auto;
    max-width: 640px;
    height: 100%;
    font-family: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Helvetica, Arial, sans-serif;
    background-color: #f8f9fc;

    /* 为底部固定栏留空间 */
    color: #1e2a3e;
    height: 100%;
    overflow: auto;
}

body {
    padding-bottom: 70px;
}