* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f7fa;
        }
        
        /* 修改header为固定定位 */
        header {
            background: linear-gradient(135deg, #0e2050 0%, #032b59 100%);
            padding: 1rem 1.5rem;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.2);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo-container {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .logo {
            height: 50px;
            width: auto;
        }

        .site-title {
            color: white;
            font-size: 1.4rem;
            font-weight: 600;
            margin: 0;
        }

        /* 顶部用户操作栏 */
        .user-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        /* 语言切换按钮样式 */
        .lang-switch {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            border: 1px solid rgba(149, 219, 222, 0.3);
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: all 0.3s ease;
            white-space: nowrap;
            cursor: pointer;
            backdrop-filter: blur(10px);
        }

        .lang-switch:hover {
            background-color: #95dbde;
            color: #032b59;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(149, 219, 222, 0.3);
        }

        .user-btn {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            border: 1px solid rgba(149, 219, 222, 0.3);
            padding: 8px 20px;
            border-radius: 20px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.85rem;
            transition: all 0.3s ease;
            white-space: nowrap;
            backdrop-filter: blur(10px);
        }

        .user-btn:hover {
            background-color: #95dbde;
            color: #032b59;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(149, 219, 222, 0.3);
        }

        .login-btn {
            background-color: transparent;
        }

        .register-btn {
            background-color: #95dbde;
            color: #032b59;
            border-color: #95dbde;
        }

        .register-btn:hover {
            background-color: #032b59;
            color: white;
            border-color: #032b59;
        }

        .user-profile {
            display: flex;
            align-items: center;
            gap: 12px;
            color: white;
        }

        .user-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: #95dbde;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: #032b59;
        }

        .user-name {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .logout-btn {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 15px;
            border-radius: 15px;
            text-decoration: none;
            font-size: 0.8rem;
            transition: all 0.3s ease;
        }

        .logout-btn:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }
        .registration-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        .registration-header {
            margin-top: 93px;
            text-align: center;
            margin-bottom: 40px;
            padding: 20px 0;
        }
        
        .registration-title {
            font-size: 2.5rem;
            color: #032b59;
            margin-bottom: 15px;
            font-weight: 700;
        }
        
        .registration-subtitle {
            font-size: 1.2rem;
            color: #555;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .registration-form-container {
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            padding: 30px;
        }
        
        .form-section {
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #eee;
        }
        
        .section-title {
            font-size: 1.3rem;
            color: #032b59;
            margin-bottom: 20px;
            font-weight: 600;
            display: flex;
            align-items: center;
        }
        
        .section-title .sub-title{
            font-size: 1rem;
            color: #032b59;
            font-weight: normal;
        }
        
        .section-title::before {
            content: '';
            display: inline-block;
            width: 5px;
            height: 20px;
            background-color: #95dbde;
            margin-right: 10px;
            border-radius: 2px;
        }
        
        .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 15px;
        }
        
        .form-field {
            flex: 1;
            min-width: 250px;
            margin-bottom: 15px;
        }
        
        .form-label {
            display: block;
            margin-bottom: .2rem;
            color: #000000;
            font-size: 1.2rem;
        }
        
        .form-helper {
            display: block;
            margin-bottom: 1rem;
            padding-left: 1rem;
            font-size: 1rem;
            color: #000000;
        }

        .download-field{
            display: flex;
            justify-content: right;
            margin-bottom: 1rem;
        }
        
        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: all 0.3s ease;
            background-color: #f9f9f9;
        }
        
        .form-input.invalid, .form-select.invalid, .form-textarea.invalid {
            border-color: #e74c3c;
            background-color: #fff5f5;
        }
        
        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: #95dbde;
            box-shadow: 0 0 0 3px rgba(149, 219, 222, 0.2);
            background-color: white;
        }
        
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        
        .radio-group, .checkbox-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        
        .radio-item, .checkbox-item {
            display: flex;
            align-items: center;
            cursor: pointer;
        }
        
        .radio-item input, .checkbox-item input {
            margin-right: 8px;
        }
        
        .file-input {
            position: absolute;
            opacity: 0;
            width: 0.1px;
            height: 0.1px;
            overflow: hidden;
            z-index: -1;
        }
        
        .file-upload {
            border: 2px dashed #ddd;
            border-radius: 6px;
            padding: 20px;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            display: block;
        }
        
        .file-upload:hover {
            border-color: #95dbde;
        }
        
        .file-upload.has-file {
            border-color: #95dbde;
            background-color: #f9fffe;
        }
        
        .file-label {
            display: block;
            cursor: pointer;
        }
        
        .file-icon {
            font-size: 2rem;
            color: #95dbde;
            margin-bottom: 10px;
        }
        
        .file-text {
            color: #666;
            margin-bottom: 10px;
            transition: all 0.3s ease;
        }
        
        .file-text.has-file {
            color: #032b59;
            font-weight: 500;
        }
        
        .file-requirements {
            font-size: 0.85rem;
            color: #888;
        }
        
        .error-message {
            color: #e74c3c;
            font-size: 0.9em;
            margin-top: 5px;
        }
        
        .form-actions {
            display: flex;
            justify-content: center;
            margin-top: 30px;
        }
        
        .btn {
            padding: 12px 30px;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #032b59 0%, #0e2050 100%);
            color: white;
        }
        
        .btn-download {
            padding: .7rem 1rem;
            border: none;
            border-radius: .3rem;
            font-size: .8rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            line-height: 1;

            background: linear-gradient(135deg, #4CAF50 0%, #009688 100%);
            color: white;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(3, 43, 89, 0.3);
        }
        
        .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(3, 43, 89, 0.3);
        }
        
        .btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        
        .message {
            padding: 12px 15px;
            border-radius: 6px;
            margin-bottom: 20px;
            font-weight: 600;
            display: block;
        }
        
        .message-success {
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }
        
        .message-error {
            background-color: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }
        
        .team-member {
            margin-bottom: 20px;
            padding: 15px;
            background-color: #f9f9f9;
            border-radius: 6px;
        }
        
        .member-title {
            font-weight: 600;
            margin-bottom: 10px;
            color: #032b59;
        }
        
        .word-count {
            font-size: 0.9em;
            color: #666;
            text-align: right;
            margin-top: 5px;
        }
        
        .word-count.exceeded {
            color: #e74c3c;
            font-weight: bold;
        }
        
        .spinner {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(149, 219, 222, 0.3);
            border-radius: 50%;
            border-top-color: #032b59;
            animation: spin 1s ease-in-out infinite;
            margin-right: 8px;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        .required::after {
            content: ' *';
            color: #e74c3c;
        }
        
        .debug-panel {
            background-color: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 6px;
            padding: 15px;
            margin-top: 20px;
        }
        
        .debug-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: #495057;
            margin-bottom: 10px;
        }
        
        .debug-controls {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        
        .debug-btn {
            padding: 8px 15px;
            background-color: #6c757d;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.9rem;
        }
        
        .debug-btn:hover {
            background-color: #5a6268;
        }
        
        .debug-info {
            margin-top: 10px;
            font-size: 0.85rem;
            color: #6c757d;
        }
        
        @media (max-width: 768px) {
            .registration-title {
                font-size: 2rem;
            }
            
            .form-row {
                flex-direction: column;
                gap: 15px;
            }
            
            .form-field {
                min-width: 100%;
            }
            
            .registration-form-container {
                padding: 20px 15px;
            }
        }