.container {
            display: flex;

            height: 550px;
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
        }

        .left-panel {
            flex: 1;
            background: linear-gradient(120deg, #4b6cb7 0%, #182848 100%);
            color: white;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .left-panel::before {
            content: '';
            position: absolute;
            top: -70px;
            right: -70px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }

        .left-panel::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }

        .logo {
            display: flex;
            align-items: center;
            margin-bottom: 30px;
        }

        .logo-icon {
            font-size: 32px;
            margin-right: 15px;
            color: #FFD700;
        }

        .logo-text {
            font-size: 24px;
            font-weight: bold;
        }

        .slogan {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
        }

        .features {
            list-style: none;
            margin-top: 30px;
        }

        .features li {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
            font-size: 16px;
        }

        .features i {
            margin-right: 10px;
            color: #FFD700;
            font-size: 18px;
        }

        .right-panel {
            flex: 1;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            background: white;
        }

        .tabs {
            display: flex;
            margin-bottom: 30px;
            border-bottom: 1px solid #eee;
        }

        .tab {
            padding: 12px 25px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: #777;
            position: relative;
            transition: all 0.3s ease;
        }

        .tab:hover {
            color: #4b6cb7;
        }

        .tab.active {
            color: #4b6cb7;
        }

        .tab.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: #4b6cb7;
        }

        .form-container {
            width: 100%;
        }

        .form-group {
            margin-bottom: 20px;
            position: relative;
        }

        .input-with-icon {
            display: flex;
            align-items: center;
            border: 1px solid #ddd;
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s;
        }

        .input-with-icon:focus-within {
            border-color: #4b6cb7;
            box-shadow: 0 0 0 2px rgba(75, 108, 183, 0.2);
        }

        .input-icon {
            background-color: #f8f9fa;
            padding: 12px 15px;
            border-right: 1px solid #ddd;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #555;
        }

        .form-input {
            flex: 1;
            border: none;
            padding: 14px 15px;
            font-size: 15px;
            outline: none;
            background-color: #f8f9fe;
        }

        .verify-code-container {
            display: flex;
            gap: 10px;
        }

        .verify-code-input {
            flex: 1;
        }

        .verify-code-btn {
            background: #f8f9fa;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 0 15px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 120px;
            transition: all 0.3s;
            font-size: 14px;
        }

        .verify-code-btn:hover {
            background: #e9ecef;
        }

        .verify-code-img {
            height: 46px;
            cursor: pointer;
            border-radius: 6px;
        }

        .agree-checkbox {
            display: flex;
            align-items: center;
            margin: 25px 0;
            font-size: 14px;
        }

        .agree-checkbox input {
            margin-right: 10px;
            accent-color: #4b6cb7;
        }

        .agree-checkbox a {
            color: #4b6cb7;
            text-decoration: none;
            font-weight: 500;
        }

        .agree-checkbox a:hover {
            text-decoration: underline;
        }

        .submit-btn {
            width: 100%;
            padding: 15px;
            background: linear-gradient(120deg, #4b6cb7 0%, #182848 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 4px 10px rgba(75, 108, 183, 0.3);
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(75, 108, 183, 0.4);
        }

        .hidden {
            display: none;
        }

        .countdown {
            color: #6c757d;
            font-size: 14px;
        }

        .footer {
            margin-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #777;
        }

        /* 错误提示样式 */
        .error-message {
            color: #e74c3c;
            font-size: 13px;
            margin-top: 5px;
            display: none;
        }

        .input-error {
            border-color: #e74c3c;
        }

        .input-error:focus-within {
            border-color: #e74c3c;
            box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2);
        }

        /* 加载动画 */
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255,255,255,.3);
            border-radius: 50%;
            border-top-color: #fff;
            animation: spin 1s ease-in-out infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        /* 成功提示 */
        .success-message {
            color: #27ae60;
            font-size: 13px;
            margin-top: 5px;
            display: none;
        }

        @media (max-width: 900px) {
            .container {
                flex-direction: column;
                height: auto;
                width: 100%;
                max-width: 500px;
            }

            .left-panel {
                padding: 30px;
            }

            .slogan {
                font-size: 28px;
            }
        }

        @media (max-width: 480px) {
            .right-panel {
                padding: 25px;
            }

            .tabs {
                flex-wrap: wrap;
            }

            .tab {
                padding: 10px 15px;
                font-size: 14px;
            }
        }