/* 全局基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  /* 柔和渐变背景 */
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #333;
}

/* 卡片主体 */
.card {
  max-width: 620px;
  width: 90%;
  padding: 48px 40px;
  border-radius: 20px;
  background: #ffffff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  text-align: center;
}

/* 大标题 */
.title {
  font-size: 44px;
  font-weight: 700;
  color: #4a4ae0;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

/* 问候语 */
.greeting {
  font-size: 22px;
  color: #555;
  line-height: 1.7;
  margin-bottom: 32px;
}

/* 高亮“你的名字” */
.name {
  color: #e74c3c;
  font-weight: 700;
  margin: 0 6px;
}

/* 时间卡片 */
.time-box {
  display: inline-block;
  padding: 18px 28px;
  border-radius: 12px;
  background: #f4f4ff;
  border: 1px solid #dcdcff;
}

.time-label {
  font-size: 14px;
  color: #888;
  margin-bottom: 8px;
}

/* 时间值（等宽字体，避免跳动） */
.time-value {
  font-size: 28px;
  font-weight: 600;
  color: #222;
  font-family: "Consolas", "Menlo", monospace;
  letter-spacing: 1px;
}