* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, sans-serif;
}

.login-page {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    display: flex;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    max-width: 900px;
    width: 100%;
    min-height: 500px;
}

.login-left {
    flex: 1;
    background: linear-gradient(135deg, #3190e8 0%, #2575c7 100%);
    padding: 50px 40px;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.brand-title {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 10px;
}

.brand-subtitle {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    font-size: 15px;
    display: flex;
    align-items: center;
}

.feature-icon {
    margin-right: 10px;
}

.login-right {
    flex: 1;
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-title {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
}

.login-form-inner .form-control {
    border: 1px solid #dbe1ea;
    border-radius: 6px;
    height: 42px;
    padding-left: 36px;
}

.login-form-inner .form-control:focus {
    border-color: #3190e8;
    box-shadow: 0 0 0 3px rgba(49, 144, 232, 0.1);
}

.captcha-row {
    display: flex;
    gap: 10px;
}

.captcha-input {
    flex: 1;
}

.captcha-img {
    height: 42px;
    width: 120px;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid #dbe1ea;
}

.btn-login {
    background: linear-gradient(135deg, #3190e8 0%, #2575c7 100%);
    border: none;
    height: 44px;
    font-size: 16px;
    font-weight: bold;
    letter-spacing: 4px;
}

.btn-login:hover {
    background: linear-gradient(135deg, #2575c7 0%, #1d5fa8 100%);
}

.login-footer {
    margin-top: 20px;
    color: rgba(255,255,255,0.8);
    font-size: 13px;
    text-align: center;
}

@media (max-width: 768px) {
    .login-container {
        flex-direction: column;
    }
    
    .login-left {
        padding: 30px;
        text-align: center;
    }
    
    .feature-list {
        display: none;
    }
    
    .login-right {
        padding: 30px;
    }
}