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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    min-height: 100vh;
    background-color: #f8fafc;
    color: #334155;
    line-height: 1.6;
    transition: background-color 0.2s ease, color 0.2s ease;
}

a {
    color: inherit;
    text-decoration: none;
}

/* 图片保护：禁止选中、拖拽 */
img {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
    -webkit-user-drag: none;
    pointer-events: none;
}

/* 暗色模式 */
body.dark-mode {
    background-color: #0d1117;
    color: #c9d1d9;
}