body {
  background: #F4F4F4;
  margin: 0;
  font-family: 'Quicksand', sans-serif;
  color: #444;
}

#container {
  max-width: 750px;
  width: 100%;
  margin: 0 auto;
  background: #FFFFFF;
}

header {
  padding: 20px 40px;
}

header a {
  color: #121212;
  text-decoration: none;
  font-size: 2rem;
  font-weight: bold;
}

#menu {
  background: #165687;
  padding: 10px 20px;
  text-align: center;
}

#menu a {
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  margin: 0 8px;
}

#menu a:hover {
  color: #ffe600;
}

#sidebar {
  float: left;
  width: 25%;
  min-width: 150px;
  padding: 20px;
  box-sizing: border-box;
}

#main {
  margin-left: 25%;
  padding: 20px;
  font-size: 14px;
  line-height: 1.6;
}

#main a {
  color: #165687;
  text-decoration: none;
}

#main a:hover {
  color: #444;
}

#footer {
  padding: 15px;
  background: #5da0d4;
  color: #fff;
  font-size: 12px;
  text-align: center;
}

#footer a {
  color: #000;
  text-decoration: none;
}

#footer a:hover {
  color: #fff;
}

.separator {
  margin: 0 5px;
  color: #fff;
}

@media (max-width: 768px) {
  #sidebar {
    float: none;
    width: 100%;
    text-align: center;
  }
  #main {
    margin: 0;
    padding: 10px;
  }
  #menu a {
    font-size: 16px;
    margin: 0 10px;
  }
}

.fluid-engine {
  max-width: 100%;
  margin: 10px auto;
  padding: 10px;
  background: linear-gradient(135deg, #f9f5e7, #5ab5fa);
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.fluid-engine h4 {
  font-size: 1.2rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 10px;
}

.fluid-engine p {
  text-align: center;
  font-size: 0.95rem;
  margin: 6px 0;
}

a {
  color: blue;
  text-decoration: none;
}

a:hover {
  color: #FFD700;
}