/* Reset and Global Styles */
* {
*   margin: 0;
*     padding: 0;
*       box-sizing: border-box;
*       }
*
*       body {
*         font-family: 'Open Sans', sans-serif;
*           background-color: #f5f5f5;
*             line-height: 1.6;
*               color: #333;
*               }
*
*               .container {
*                 width: 80%;
*                   margin: 0 auto;
*                   }
*
*/* Header Styles */
header {
  background-color: #1d1d1d;
  color: #fff;
  padding: 15px 0;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header .logo {
  font-size: 1.8em;
  font-weight: 700;
  text-transform: uppercase;
  color: #fff;
  text-decoration: none;  
}

header .logo img {
  width: 60px; /* 设置 logo 图片的宽度 */
  height: auto;
  margin-right: 10px; /* logo 和文字之间的间距 */
}

header nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin-top: 10px;
}

header nav ul li {
  margin: 0 15px;
}

header nav ul li a {
  text-decoration: none;
  color: #fff;
  font-weight: 600;
  text-transform: uppercase;
  padding: 8px 16px;
  transition: background-color 0.3s ease;
}

header nav ul li a:hover {
  background-color: #6c757d;
  border-radius: 4px;
}

/* Banner Styles */
.banner {
  position: relative;
  text-align: center;
  background-image: url('images/banner.jpg');
  background-size: cover;
  background-position: center;
  height: 400px;
}

.banner-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.7);
}

.banner-content h1 {
  font-size: 3.5em;
  font-weight: 700;
  margin-bottom: 10px;
}

.banner-content p {
  font-size: 1.2em;
  margin-bottom: 20px;
}

.btn-main {
  text-decoration: none;
  background-color: #007bff;
  padding: 10px 20px;
  color: #fff;
  font-weight: 600;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.btn-main:hover {
  background-color: #0056b3;
}


/* Introduction Section */
.introduction {
  padding: 50px 0;
  background-color: #fff;
  text-align: center;
}

.introduction h2 {
  font-size: 2.5em;
  font-weight: 700;
  margin-bottom: 20px;
}

.introduction .intro-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
}

.introduction p {
  font-size: 1.2em;
  color: #666;
  line-height: 1.8;
  max-width: 600px;
}

.introduction .intro-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

/* Services Section */
.services {
  padding: 60px 0;
  background-color: #f9f9f9;
  text-align: center;
}

.services h2 {
  font-size: 2.5em;
  font-weight: 700;
  margin-bottom: 40px;
}

.services-cards {
  display: flex;
  justify-content: space-around;
  gap: 20px;
}

.service-card {
  background-color: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 30%;
  text-align: center;
}

.service-card h3 {
  font-size: 1.8em;
  margin-bottom: 15px;
}

.service-card p {
  font-size: 1.2em;
  color: #555;
}

.service-image {
  width: 50%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
}

/* Footer Styles */
footer {
  background-color: #333;
  color: #fff;
  padding: 40px 0;
  text-align: center;
}

footer .footer-links {
  list-style: none;
  margin-bottom: 20px;
}

footer .footer-links li {
  display: inline-block;
  margin: 0 15px;
}

footer .footer-links li a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

footer .footer-links li a:hover {
  color: #7f7f7f;
}

footer .social-media-links {
  margin-bottom: 20px;
}

footer .social-icon {
  color: #fff;
  text-decoration: none;
  margin: 0 10px;
  font-weight: 600;
}

footer .social-icon:hover {
  color: #7f7f7f;
}

footer p {
  font-size: 0.9em;
  color: #bbb;
}

/* Responsive Design */
@media (max-width: 768px) {
  .services-cards {
    flex-direction: column;
    align-items: center;
  }

  .service-card {
    width: 80%;
    margin-bottom: 30px;
  }

  .banner-content h1 {
    font-size: 2.5em;
  }

  .introduction .intro-content {
    flex-direction: column;
    text-align: center;
  }

  .intro-image {
    max-width: 100%;
    margin-bottom: 20px;
  }
}