/* --- 全局变量与重置 --- */
:root {
    --primary-color: #E9342D;
    --bg-color: #F8F9FB;
    --text-main: #333;
    --text-sub: #999;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.4;
    max-width: 500px; 
    margin: 0 auto;
    position: relative;
    min-height: 100vh;
}