/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #0d6efd, #ffffff);
  animation: aurora-move 15s linear infinite;
  overflow-x: hidden;
}
@keyframes aurora-move {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}
.left-sidebar {
  background: linear-gradient(to bottom, #0d6efd, #198754);
  color: white;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}
.main-content {
  padding: 20px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
h1, h2, h3 {
  font-family: 'Bebas Neue', sans-serif;
  color: #0d6efd;
  margin-bottom: 20px;
}
p {
  margin-bottom: 15px;
}
ul {
  list-style-type: none;
  padding-left: 20px;
}
li {
  margin-bottom: 10px;
  position: relative;
}
li::before {
  content: '•';
  color: #198754;
  font-size: 20px;
  position: absolute;
  left: -20px;
  top: 0;
}
code {
  display: block;
  background: #f4f4f4;
  padding: 10px;
  border-radius: 5px;
  font-family: 'Courier New', Courier, monospace;
  color: #333;
  margin: 10px 0;
}
.button {
  background-color: #0d6efd;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  transition: background-color 0.3s ease;
  cursor: pointer;
}
.button:hover {
  background-color: #0d5afd;
}
@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
  }
  .left-sidebar {
    order: 2;
  }
  .main-content {
    order: 1;
  }
}
.hero-section {
  text-align: center;
  padding: 50px 20px;
  background: radial-gradient(circle, rgb(255, 87, 34), transparent);
  color: white;
}
.hero-section img {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
}
.feature-section {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 20px;
  padding: 20px;
}
.feature-item {
  background: white;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  flex: 1 1 calc(33.333% - 40px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.feature-item img {
  width: 50px;
  height: 50px;
  margin-bottom: 10px;
}
.case-study {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 20px;
}
.case-item {
  background: white;
  padding: 20px;
  border-radius: 10px;
  flex: 1 1 calc(50% - 40px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.case-item img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}
footer {
  text-align: center;
  padding: 20px;
  background: #0d6efd;
  color: white;
}