* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}

body {
    background: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

a{
    text-decoration: none;
}

.login-container {
    width: 400px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    padding: 30px;
}

.login-title {
    text-align: center;
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
    position: relative;
}

.login-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: #0088ff;
    margin: 10px auto 0;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #666;
}

.form-group label .required {
    color: #e74c3c !important;
    margin-right: 4px;
}

.form-control {
    width: 100%;
    height: 45px;
    padding: 0 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 11px;
    transition: border-color 0.3s;
}

.form-control:focus {
    border-color: #0088ff;
    outline: none;
}

.btn {
    width: 100%;
    height: 45px;
    background: #0088ff;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #0066cc;
}

.link-group {
    text-align: center;
    margin-top: 15px;
}

.link-group a {
    color: #0088ff;
    text-decoration: none;
    font-size: 14px;
}

.link-group a:hover {
    text-decoration: underline;
}

.error-tip {
    color: #ff4444;
    text-align: center;
    margin-bottom: 15px;
    display: none;
}

/* 平板端适配 (768px - 1024px) */
@media (max-width: 1024px) {
    .login-container {
        width: 300px;
        padding: 15px;
    }
    
    .login-title {
        font-size: 19px;
        margin-bottom: 12px;
    }
    
    .form-group {
        margin-bottom: 12px;
    }
    
    .form-control {
        height: 38px;
        font-size: 14px;
    }
    
    .btn {
        height: 38px;
        font-size: 14px;
        padding: 6px 12px;
    }
}

/* 手机端适配 (768px以下) */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .login-container {
        width: 100%;
        max-width: 280px;
        padding: 12px;
    }
    
    .login-title {
        font-size: 17px;
        margin-bottom: 10px;
    }
    
    .login-title::after {
        width: 30px;
        height: 2px;
        margin: 6px auto 0;
    }
    
    .form-group {
        margin-bottom: 10px;
    }
    
    .form-group label {
        margin-bottom: 4px;
        font-size: 14px;
    }
    
    .form-control {
        height: 36px;
        font-size: 14px;
        padding: 0 10px;
    }
    
    .btn {
        height: 36px;
        font-size: 14px;
        padding: 6px 12px;
    }
    
    .link-group {
        margin-top: 8px;
    }
    
    .link-group a {
        font-size: 13px;
    }
    
    .error-tip {
        margin-bottom: 8px;
        font-size: 13px;
    }
}