ADD file via upload

index.less

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+:root {
+  --lightColor: #e3f2fd; /* 浅蓝色背景 */
+  --darkColor: #005fa3; /* 深蓝色文字 */
+  --primaryColor: #007bff; /* 主题蓝色 */
+  --secondaryColor: #6c757d; /* 次要灰色 */
+}
+
+* {
+  font-family: '正楷';
+}
+
+body {
+  padding: 0 50px;
+  background-color: var(--lightColor);
+}
+
+h1,
+h2 {
+  animation: changeColor 2s infinite alternate;
+  animation-direction: alternate;
+}
+
+h1 {
+  padding: 20px 0;
+  background-color: var(--primaryColor);
+  color: white;
+  text-align: center;
+}
+
+h2 {
+  color: var(--darkColor);
+}
+
+#content {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+}
+
+#content > div {
+  width: 120px;
+  height: 60px;
+  margin: 10px;
+  font-size: 18px;
+  line-height: 60px;
+  text-align: center;
+  background-color: white;
+  color: var(--secondaryColor);
+  border-radius: 5px;
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+  transition: transform 0.3s ease-in-out;
+}
+
+#content .cell.active {
+  background-color: var(--primaryColor);
+  color: white;
+}
+
+#content .selected {
+  border: 2px solid var(--primaryColor);
+}
+
+button {
+  display: inline-block;
+  padding: 10px 20px;
+  background-color: var(--primaryColor);
+  color: white;
+  font-size: 16px;
+  font-weight: 700;
+  margin: 10px;
+  border: none;
+  border-radius: 5px;
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
+  transition: background-color 0.3s;
+}
+
+button:hover {
+  background-color: #0056b3;
+}
+
+button:active {
+  background-color: #004080;
+}
+
+select {
+  display: inline-block;
+  height: 35px;
+  width: 120px;
+  border: 1px solid #ced4da;
+  background-color: white;
+  color: var(--secondaryColor);
+  font-size: 14px;
+  margin: 10px;
+  border-radius: 5px;
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+}
+
+@keyframes changeColor {
+  from {
+      color: var(--darkColor);
+  }
+  to {
+      color: white;
+  }
+}