/* 基本样式设置 */
body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(to bottom, #002B5B, #F5F5F5);
  color: #333;
  overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #002B5B;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.navbar li {
  position: relative;
  margin-right: 25px;
}

.navbar a {
  color: #FFF;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.3s ease;
}

.navbar a:hover {
  color: #FFA500;
}

.navbar ul ul {
  display: none;
  position: absolute;
  top: 45px;
  left: 0;
  background-color: #FFF;
  color: #333;
  min-width: 160px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.2);
  border-radius: 4px;
}

.navbar ul ul li {
  margin: 0;
  padding: 10px 20px;
}

.navbar ul ul a {
  color: #333;
  font-size: 14px;
}

.navbar li:hover > ul {
  display: block;
}

.language-toggle {
  color: #FFF;
  cursor: pointer;
  font-size: 16px;
}

/* 主页焦点区域样式 */
.hero {
  position: relative;
  height: 600px;
  background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
  background-size: cover;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #FFF;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
  animation: fadeInDown 1s ease forwards;
}

.hero p {
  font-size: 20px;
  max-width: 800px;
  animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInDown {
  from { opacity: 0.5; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0.5; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 网格布局 */
.grid-container {
  display: grid;
  grid-template-columns: none;
  grid-gap: 40px;
  padding: 80px 30px 40px 30px;
}

.section {
  background: #FFF;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.section:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 20px rgba(0,0,0,0.2);
}

.section-title {
  font-size: 24px;
  color: #002B5B;
  margin-bottom: 15px;
  border-bottom: 2px solid #FFA500;
  display: inline-block;
  padding-bottom: 5px;
}

.section p {
  font-size: 16px;
  line-height: 1.6;
  color: #555;
}

/* 图片样式 */
.section img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.section img:hover {
  transform: scale(1.05);
}

/* 代码块样式 */
code {
  background-color: #F5F5F5;
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 14px;
}

pre {
  background-color: #F5F5F5;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  position: relative;
}

pre code::before {
  content: "代码块";
  position: absolute;
  top: -20px;
  left: 0;
  background-color: #FFA500;
  color: #FFF;
  padding: 5px 10px;
  border-radius: 4px 4px 0 0;
  font-size: 14px;
}

/* 按钮样式 */
.button {
  background-color: #FFA500;
  color: #FFF;
  padding: 10px 25px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.3s ease;
  font-size: 16px;
}

.button:hover {
  background-color: #FF8C00;
  transform: scale(1.05);
}

/* 底部样式 */
.footer {
  background-color: #002B5B;
  color: #FFF;
  padding: 40px 30px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.footer div {
  flex: 1 1 30%;
  margin: 10px 0;
}

.footer h4 {
  border-bottom: 2px solid #32CD32;
  padding-bottom: 10px;
  margin-bottom: 15px;
  font-size: 20px;
}

.testimonial {
  font-style: italic;
  background-color: #FFF;
  color: #333;
  padding: 15px;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.consultation-button {
  background-color: #32CD32;
  color: #FFF;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.3s ease;
  font-size: 16px;
}

.consultation-button:hover {
  background-color: #228B22;
  transform: scale(1.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .navbar ul {
    flex-direction: column;
    background-color: #002B5B;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    display: none;
  }
  
  .navbar.active ul {
    display: flex;
  }

  .navbar li {
    margin: 10px 0;
  }

  .hero {
    height: 400px;
    background-size: cover;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
    max-width: 90%;
  }

  .grid-container {
    padding: 60px 15px 30px 15px;
  }

  .footer {
    flex-direction: column;
    align-items: center;
  }

  .footer div {
    flex: 1 1 100%;
    text-align: center;
  }
}

/* 滚动动画 */
.fade-in {
  opacity: 1;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in {
  opacity: 1;
  transform: translateX(-50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in.visible {
  opacity: 1;
  transform: translateX(0);
}