* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            color: #fff;
            overflow: hidden;
            position: relative;
        }
        
        
        /* 装饰元素 */
        .bubble {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            animation: float 15s infinite ease-in-out;
        }
        
        .bubble:nth-child(1) {
            width: 120px;
            height: 120px;
            top: 15%;
            left: 10%;
            animation-delay: 0s;
        }
        
        .bubble:nth-child(2) {
            width: 80px;
            height: 80px;
            top: 70%;
            left: 85%;
            animation-delay: 2s;
        }
        
        .bubble:nth-child(3) {
            width: 60px;
            height: 60px;
            top: 25%;
            left: 90%;
            animation-delay: 4s;
        }
        
        .bubble:nth-child(4) {
            width: 100px;
            height: 100px;
            top: 80%;
            left: 15%;
            animation-delay: 6s;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0) translateX(0); }
            25% { transform: translateY(-30px) translateX(20px); }
            50% { transform: translateY(20px) translateX(-30px); }
            75% { transform: translateY(-20px) translateX(-20px); }
        }
        
        /* 主容器 */
        .auth-container {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(12px);
            border-radius: 20px;
            padding: 40px;
            width: 100%;
            max-width: 420px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.2);
            z-index: 10;
            position: relative;
            overflow: hidden;
        }
        
        /* 顶部装饰条 */
        .top-bar {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, #4facfe, #00f2fe);
        }
        
        /* 标题样式 */
        .header {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .header h2 {
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        
        .header p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
        }
        
        /* 表单样式 */
        .form-group {
            margin-bottom: 25px;
            position: relative;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
        }
        
        .input-with-icon {
            position: relative;
        }
        
        .input-with-icon i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.7);
        }
        
        .input-with-icon input {
            width: 100%;
            padding: 14px 14px 14px 45px;
            border: none;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.15);
            color: white;
            font-size: 16px;
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .input-with-icon input:focus {
            outline: none;
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.3);
            box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.3);
        }
        
        .input-with-icon input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        
        /* 按钮样式 */
        .btn {
            width: 100%;
            padding: 15px;
            border: none;
            border-radius: 10px;
            background: linear-gradient(90deg, #4facfe, #00f2fe);
            color: white;
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 242, 254, 0.3);
            letter-spacing: 1px;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 242, 254, 0.4);
        }
        
        .btn:active {
            transform: translateY(0);
        }
        
        .btn:disabled {
            background: linear-gradient(90deg, #4d9ad1, #00c6d4);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        
        /* 消息样式 */
        .message {
            text-align: center;
            margin: 20px 0;
            min-height: 25px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .error {
            color: #ff7d7d;
            background: rgba(255, 125, 125, 0.15);
            padding: 12px;
            border-radius: 8px;
            margin-top: 15px;
            border-left: 4px solid #ff7d7d;
        }
        
        .success {
            color: #5effa0;
            background: rgba(94, 255, 160, 0.15);
            padding: 12px;
            border-radius: 8px;
            margin-top: 15px;
            border-left: 4px solid #5effa0;
        }
        
        /* 尝试计数器 */
        .attempts {
            text-align: center;
            font-size: 15px;
            margin-top: 15px;
            padding: 10px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.1);
        }
        
        .lockout {
            color: #ff7d7d;
            font-weight: 600;
        }
        
        /* 安全提示 */
        .security-tips {
            margin-top: 25px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .security-tips h3 {
            margin-bottom: 12px;
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .security-tips ul {
            list-style: none;
            padding-left: 10px;
        }
        
        .security-tips li {
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
        }
        
        .security-tips li i {
            color: #4facfe;
            font-size: 12px;
            margin-top: 5px;
        }
         /* 页脚样式 */
        .footer {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(15, 23, 42, 0.85);
            padding: 15px 20px;
            text-align: center;
            z-index: 100;
            backdrop-filter: blur(5px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        
        .footer-content {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: #94a3b8;
        }
        
        .footer-links {
            display: flex;
            gap: 15px;
        }
        
        .footer-links a {
            color: #5ffbf1;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .footer-links a:hover {
            color: #86a8e7;
            text-decoration: underline;
        }
        
        .copyright {
            font-size: 13px;
            color: #64748b;
        }
        
        .copyright a {
            font-size: 13px;
            color: #64748b;
        }
        
        .copyright a:link {
            font-size: 13px;
            color: #64748b;
        }
        
        .copyright a:visited {
            font-size: 13px;
            color: #64748b;
        }
        
        .icp {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        
        .icp-icon {
            width: 16px;
            height: 16px;
            background: #5ffbf1;
            border-radius: 2px;
            display: inline-block;
            position: relative;
        }
        
        .icp-icon::before {
            content: "备";
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 10px;
            color: #0f172a;
            font-weight: bold;
        }
        /* 响应式设计 */
        @media (max-width: 480px) {
            .auth-container {
                padding: 30px 20px;
                margin: 0 15px;
            }
            
            .header h2 {
                font-size: 24px;
            }
            
            .btn {
                padding: 14px;
            }
            .footer-content {
                flex-direction: column;
                gap: 8px;
            }
            
            .footer-links {
                justify-content: center;
            }
        }
        
        /* 动画效果 */
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            20%, 60% { transform: translateX(-8px); }
            40%, 80% { transform: translateX(8px); }
        }
        
        .shake {
            animation: shake 0.5s ease;
        }