diff --git a/dianming.html b/dianming.html
index e67c059..0b3f7d0 100644
--- a/dianming.html
+++ b/dianming.html
@@ -1,167 +1,167 @@
-<!DOCTYPE html>
-<html lang="zh-CN">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>课堂点名</title>
-    <style>
-        body {
-            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
-            background: linear-gradient(135deg, #89f7fe, #66a6ff);
-            height: 100vh;
-            margin: 0;
-            display: flex;
-            justify-content: center;
-            align-items: center;
-            color: #333;
-        }
-        .container {
-            text-align: center;
-            background: rgba(255, 255, 255, 0.85);
-            padding: 40px;
-            border-radius: 20px;
-            box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
-            backdrop-filter: blur(8.5px);
-            -webkit-backdrop-filter: blur(8.5px);
-            border: 1px solid rgba(255, 255, 255, 0.18);
-        }
-        h1 {
-            margin-bottom: 30px;
-            font-size: 2em;
-            color: #ff5722;
-        }
-        #studentNameDisplay {
-            font-size: 1.8em;
-            margin-bottom: 30px;
-            min-height: 50px;
-        }
-        .button-group {
-            display: flex;
-            justify-content: center;
-            gap: 20px;
-            flex-wrap: wrap;
-        }
-        button {
-            padding: 12px 25px;
-            font-size: 1em;
-            border: none;
-            border-radius: 30px;
-            background-color: #4CAF50;
-            color: white;
-            cursor: pointer;
-            transition: transform 0.2s, background-color 0.3s;
-            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
-        }
-        button:hover {
-            background-color: #45a049;
-            transform: scale(1.05);
-            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
-        }
-        #absentButton {
-            background-color: #f44336;
-        }
-        #absentButton:hover {
-            background-color: #e53935;
-        }
-        .back-button {
-            margin-top: 30px;
-            background-color: #2196F3;
-        }
-        .back-button:hover {
-            background-color: #1e88e5;
-        }
-    </style>
-</head>
-<body>
-
-    <div class="container">
-        <h1>课堂点名</h1>
-        <div id="studentNameDisplay">请点击“随机点名”按钮</div>
-        <div class="button-group">
-            <button id="startAttendance">随机点名</button>
-            <button id="presentButton" style="display:none;">到</button>
-            <button id="absentButton" style="display:none;">没到</button>
-        </div>
-        <button class="back-button" onclick="window.location.href='index.html'">返回主页面</button>
-    </div>
-
-    <script>
-    const studentNameDisplay = document.getElementById('studentNameDisplay');
-    const startAttendanceButton = document.getElementById('startAttendance');
-    const presentButton = document.getElementById('presentButton');
-    const absentButton = document.getElementById('absentButton');
-    let currentStudent = null;
-
-// 随机点名按钮点击事件
-startAttendanceButton.addEventListener('click', async () => {
-    try {
-        // 向后端请求随机学生
-        const response = await fetch('http://localhost:3000/api/random-call');
-        const data = await response.json();
-
-        if (data.student) {
-            currentStudent = data.student;
-            studentNameDisplay.textContent = `当前学生: ${currentStudent.student_name}`;
-            presentButton.style.display = 'inline-block';
-            absentButton.style.display = 'inline-block';
-            startAttendanceButton.disabled = true;
-        } else {
-            alert('无法获取学生数据');
-        }
-    } catch (error) {
-        console.error('获取学生失败', error);
-        alert('获取学生失败，请重试');
-    }
-});
-
-// 到场按钮点击事件
-presentButton.addEventListener('click', async () => {
-    if (currentStudent) {
-        await updatePoints(currentStudent.student_id, 1); // 到场加1分
-        alert(`${currentStudent.student_name} 已到，加1分`);
-        resetAttendance();
-    }
-});
-
-// 没到按钮点击事件
-absentButton.addEventListener('click', async () => {
-    if (currentStudent) {
-        await updatePoints(currentStudent.student_id, -1); // 未到减2分
-        alert(`${currentStudent.student_name} 未到，减1分`);
-        resetAttendance();
-    }
-});
-
-// 更新分数的函数
-async function updatePoints(studentId, points) {
-    try {
-        // 发送请求更新分数
-        const response = await fetch('http://localhost:3000/api/update-score', {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json',
-            },
-            body: JSON.stringify({ student_id: studentId, points }),
-        });
-
-        if (!response.ok) {
-            throw new Error('更新分数失败');
-        }
-    } catch (error) {
-        console.error('更新分数失败', error);
-        alert('更新分数失败，请重试');
-    }
-}
-
-// 重置点名的函数
-function resetAttendance() {
-    studentNameDisplay.textContent = '请点击“随机点名”按钮';
-    presentButton.style.display = 'none';
-    absentButton.style.display = 'none';
-    startAttendanceButton.disabled = false;
-}
-
-    </script>
-
-</body>
-</html>
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>课堂点名</title>
+    <style>
+        body {
+            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+            background: linear-gradient(135deg, #89f7fe, #66a6ff);
+            height: 100vh;
+            margin: 0;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            color: #333;
+        }
+        .container {
+            text-align: center;
+            background: rgba(255, 255, 255, 0.85);
+            padding: 40px;
+            border-radius: 20px;
+            box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
+            backdrop-filter: blur(8.5px);
+            -webkit-backdrop-filter: blur(8.5px);
+            border: 1px solid rgba(255, 255, 255, 0.18);
+        }
+        h1 {
+            margin-bottom: 30px;
+            font-size: 2em;
+            color: #ff5722;
+        }
+        #studentNameDisplay {
+            font-size: 1.8em;
+            margin-bottom: 30px;
+            min-height: 50px;
+        }
+        .button-group {
+            display: flex;
+            justify-content: center;
+            gap: 20px;
+            flex-wrap: wrap;
+        }
+        button {
+            padding: 12px 25px;
+            font-size: 1em;
+            border: none;
+            border-radius: 30px;
+            background-color: #4CAF50;
+            color: white;
+            cursor: pointer;
+            transition: transform 0.2s, background-color 0.3s;
+            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
+        }
+        button:hover {
+            background-color: #45a049;
+            transform: scale(1.05);
+            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
+        }
+        #absentButton {
+            background-color: #f44336;
+        }
+        #absentButton:hover {
+            background-color: #e53935;
+        }
+        .back-button {
+            margin-top: 30px;
+            background-color: #2196F3;
+        }
+        .back-button:hover {
+            background-color: #1e88e5;
+        }
+    </style>
+</head>
+<body>
+
+    <div class="container">
+        <h1>课堂点名</h1>
+        <div id="studentNameDisplay">请点击“随机点名”按钮</div>
+        <div class="button-group">
+            <button id="startAttendance">随机点名</button>
+            <button id="presentButton" style="display:none;">到</button>
+            <button id="absentButton" style="display:none;">没到</button>
+        </div>
+        <button class="back-button" onclick="window.location.href='index.html'">返回主页面</button>
+    </div>
+
+    <script>
+    const studentNameDisplay = document.getElementById('studentNameDisplay');
+    const startAttendanceButton = document.getElementById('startAttendance');
+    const presentButton = document.getElementById('presentButton');
+    const absentButton = document.getElementById('absentButton');
+    let currentStudent = null;
+
+// 随机点名按钮点击事件
+startAttendanceButton.addEventListener('click', async () => {
+    try {
+        // 向后端请求随机学生
+        const response = await fetch('http://localhost:3000/api/random-call');
+        const data = await response.json();
+
+        if (data.student_id && data.student_name) {
+            currentStudent = data;
+            studentNameDisplay.textContent = `当前学生: ${currentStudent.student_name}`;
+            presentButton.style.display = 'inline-block';
+            absentButton.style.display = 'inline-block';
+            startAttendanceButton.disabled = true;
+        } else {
+            alert('无法获取学生数据');
+        }
+    } catch (error) {
+        console.error('获取学生失败', error);
+        alert('获取学生失败，请重试');
+    }
+});
+
+// 到场按钮点击事件
+presentButton.addEventListener('click', async () => {
+    if (currentStudent) {
+        await updatePoints(currentStudent.student_id, 0.5); // 到场加0.5分
+        alert(`${currentStudent.student_name} 已到，加0.5分`);
+        resetAttendance();
+    }
+});
+
+// 没到按钮点击事件
+absentButton.addEventListener('click', async () => {
+    if (currentStudent) {
+        await updatePoints(currentStudent.student_id, -1); // 未到减1分
+        alert(`${currentStudent.student_name} 未到，减1分`);
+        resetAttendance();
+    }
+});
+
+// 更新分数的函数
+async function updatePoints(studentId, points) {
+    try {
+        // 发送请求更新分数
+        const response = await fetch('http://localhost:3000/api/update-score', {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            },
+            body: JSON.stringify({ student_id: studentId, points }),
+        });
+
+        if (!response.ok) {
+            throw new Error('更新分数失败');
+        }
+    } catch (error) {
+        console.error('更新分数失败', error);
+        alert('更新分数失败，请重试');
+    }
+}
+
+// 重置点名的函数
+function resetAttendance() {
+    studentNameDisplay.textContent = '请点击“随机点名”按钮';
+    presentButton.style.display = 'none';
+    absentButton.style.display = 'none';
+    startAttendanceButton.disabled = false;
+}
+
+    </script>
+
+</body>
+</html>
