/* 页面全局样式：简洁的居中卡片式布局 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  padding: 20px;
}

.card {
  max-width: 640px;
  width: 100%;
  padding: 48px 40px;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  text-align: center;
}

.greeting {
  font-size: 26px;
  line-height: 1.6;
  color: #333;
  margin-bottom: 30px;
}

.greeting span {
  color: #764ba2;
  font-weight: bold;
}

.time-label {
  font-size: 14px;
  color: #888;
  margin-bottom: 6px;
}

.time {
  font-size: 32px;
  font-weight: bold;
  color: #333;
  font-variant-numeric: tabular-nums;
}

.footer {
  margin-top: 36px;
  font-size: 13px;
  color: #aaa;
}