/* style.css */
:root {
    --tsinghua-purple: #0099a6;
    --text-white: #ffffff;
    --text-light: rgba(255,255,255,0.9);
    --content-width: min(90%, 1200px);
    --radius-base: 4px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.15s ease;  /* 更快的动效节奏 */
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
}

/* 布局系统 */
body {
    background: #f8f9fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}