/* =============================
   base.css
   基础样式、字体、背景、重置等
   ============================= */
body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: #e8eaed;
  color: #202124;
  margin: 0;
  padding: 0;
  text-align: center;
  transition: background-color 0.6s cubic-bezier(0.4, 0, 0.2, 1), color 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: background-color, color;
}