.u4-root {
  display: flex;
  position: relative;
  flex-direction: column;
  align-items: center;
  margin-top: 45%;
  width: 100%;
  height: 100%;
}
.u4-title {
  width: 690px;
  height: 88px;
  color: rgba(0, 45, 93, 1);
  font-size: 92px;
  font-family: NotoSansCJKsc-Bold;
  font-weight: 700;
}
.u4-text {
  width: 628px;
  overflow-wrap: break-word;
  color: rgba(0, 45, 93, 1);
  font-size: 57px;
  font-family: NotoSansCJKsc-Bold;
  font-weight: 700;
  text-align: left;
  line-height: 80px;
  text-align: center;
}

.u4-subtitle {
  width: 496px;
  height: 35px;
  overflow-wrap: break-word;
  color: rgba(0, 45, 93, 1);
  font-size: 35px;
  font-family: NotoSansCJKsc-Medium;
  font-weight: 500;
  text-align: left;
  white-space: nowrap;
  margin-top: 5%;
  margin-bottom: 18%;
}

.u4-card-grid {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center; /* 居中显示，无论多少项 */
  gap: 24px 32px;
  padding-top: 24px;
}

.u4-card {
  width: 260px;
  height: 260px;
  background: #ffffff; /* 白色卡片背景 */
  border-radius: 12px;
  padding: 18px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  position: relative;
  justify-content: center;
  align-items: center;
  /* 轻微阴影和边框，提升卡片样式 */
  box-shadow: 0 6px 18px rgba(11, 42, 82, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.u4-card:hover {
  transform: translateY(-6px);
}

.u4-card.selected {
  box-shadow: 0 10px 26px rgba(11, 42, 82, 0.18);
  border: 2px solid rgba(214, 30, 54, 0.15);
}

.u4-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  width: 100%;
}

.u4-radio {
  width: 22px;
  height: 22px;
  display: block;
  object-fit: contain;
  position: absolute;
  top: 12px;
  left: 12px;
}

.u4-card-title {
  font-size: 18px;
  color: rgba(0, 45, 93, 0.95);
  font-weight: 700;
  text-align: center;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: break-word;
  line-height: 1.2;
  margin-top: 4px;
  margin-bottom: 4px;
}

.u4-card-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-left: 20px;
}

.u4-detail-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.u4-detail-bar {
  width: 6px;
  height: 39px;
  background: rgba(0, 45, 93, 0.9);
  border-radius: 3px;
}

.u4-detail-text {
  color: rgba(0, 45, 93, 0.95);
  font-size: 14px;
  line-height: 20px;
}

.u4-confirm-wrapper {
  margin-top: 12px;
}

/* 固定在底部的 footer，保持 subtitle 和 确认按钮不随上方内容移动 */
.u4-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 180px; /* 可根据页面调整 */
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none; /* 让按钮外的区域不拦截点击 */
}
.u4-footer .u4-subtitle,
.u4-footer .u4-confirm-wrapper {
  pointer-events: auto; /* 启用子元素交互 */
}
