修改登录和基础功能样式，目前已经支持钉钉登录和自定义登录注册

static/style.css

@@ -433,6 +433,217 @@ h2 {
     color: #856404;
 }
 
+.login-container {
+    max-width: 400px;
+    margin: 40px auto;
+    padding: 30px;
+    background: white;
+    border-radius: 8px;
+    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
+}
+
+.login-container h2 {
+    text-align: center;
+    margin-bottom: 30px;
+    color: #4a90d9;
+}
+
+.login-container .form-group {
+    margin-bottom: 20px;
+}
+
+.login-container .form-control {
+    width: 100%;
+    padding: 12px;
+    border: 1px solid #ddd;
+    border-radius: 4px;
+    font-size: 14px;
+}
+
+.login-container .form-control:focus {
+    outline: none;
+    border-color: #4a90d9;
+}
+
+.login-container .btn-primary {
+    width: 100%;
+    padding: 12px;
+    background-color: #4a90d9;
+    color: white;
+    border: none;
+    border-radius: 4px;
+    font-size: 16px;
+    cursor: pointer;
+}
+
+.login-container .btn-primary:hover {
+    background-color: #3a80c9;
+}
+
+.login-link {
+    text-align: center;
+    margin-top: 20px;
+    color: #666;
+}
+
+.login-link a {
+    color: #4a90d9;
+    text-decoration: none;
+}
+
+.login-link a:hover {
+    text-decoration: underline;
+}
+
+.dingtalk-login {
+    margin-top: 30px;
+    padding-top: 20px;
+    border-top: 1px solid #eee;
+    text-align: center;
+}
+
+.dingtalk-login p {
+    color: #999;
+    margin-bottom: 15px;
+    font-size: 14px;
+}
+
+.btn-dingtalk {
+    background-color: #1677ff;
+    color: white;
+    padding: 10px 20px;
+    border-radius: 4px;
+    text-decoration: none;
+    display: inline-block;
+}
+
+.btn-dingtalk:hover {
+    background-color: #0958d9;
+}
+
+.login-options {
+    display: flex;
+    flex-direction: column;
+    gap: 15px;
+    align-items: center;
+    margin-top: 30px;
+}
+
+.login-options .btn {
+    min-width: 200px;
+}
+
+.btn-secondary {
+    background-color: #6c757d;
+    color: white;
+}
+
+.btn-secondary:hover {
+    background-color: #5c636a;
+}
+
+.error {
+    color: #dc3545;
+    font-size: 14px;
+    margin-top: 5px;
+}
+
+.form-group .error {
+    color: #dc3545;
+    font-size: 14px;
+    margin-top: 5px;
+}
+
+/* Toast 弹出提示 - Element UI 风格 */
+.toast-container {
+    position: fixed;
+    top: 20px;
+    left: 50%;
+    transform: translateX(-50%);
+    z-index: 9999;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 10px;
+    pointer-events: none;
+}
+
+.toast {
+    background: white;
+    padding: 12px 20px;
+    border-radius: 4px;
+    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
+    font-size: 14px;
+    min-width: 300px;
+    max-width: 500px;
+    text-align: center;
+    opacity: 0;
+    transform: translateY(-20px);
+    transition: all 0.3s ease;
+    pointer-events: auto;
+}
+
+.toast.show {
+    opacity: 1;
+    transform: translateY(0);
+}
+
+.toast-success {
+    background: #f0f9eb;
+    border: 1px solid #e1f3d8;
+    color: #67c23a;
+}
+
+.toast-warning {
+    background: #fdf6ec;
+    border: 1px solid #faecd8;
+    color: #e6a23c;
+}
+
+.toast-error {
+    background: #fef0f0;
+    border: 1px solid #fde2e2;
+    color: #f56c6c;
+}
+
+.toast-info {
+    background: #edf2fc;
+    border: 1px solid #d3d4d6;
+    color: #909399;
+}
+
+.toast .toast-icon {
+    margin-right: 8px;
+}
+
+/* 分页样式 */
+.pagination {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    gap: 15px;
+    margin-top: 30px;
+    padding: 20px 0;
+}
+
+.btn-page {
+    background-color: #4a90d9;
+    color: white;
+    padding: 8px 16px;
+    border-radius: 4px;
+    text-decoration: none;
+    font-size: 14px;
+}
+
+.btn-page:hover {
+    background-color: #3a80c9;
+}
+
+.page-info {
+    color: #666;
+    font-size: 14px;
+}
+
 .question-preview {
     background: #f8f9fa;
     padding: 20px;