body {
  font-family: 'Roboto', sans-serif;
  color: #333;
  background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
  margin: 0;
  padding: 0;
  line-height: 1.6;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}
.header {
  background: linear-gradient(90deg, #0E3D70 0%, #45AFFF 100%);
  color: white;
  padding: 30px 0;
  text-align: center;
  border-radius: 0 0 20px 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}
.header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: #68C55E;
}
.header h1 {
  font-size: 2.5rem;
  margin: 0;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}
.notice {
  background: rgba(255,255,255,0.2);
  padding: 10px;
  border-radius: 5px;
  display: inline-block;
  margin-top: 15px;
  font-size: 0.9rem;
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}
.card {
  background: white;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(to bottom, #45AFFF, #68C55E);
}
.card h2, .card h3 {
  color: #0E3D70;
  margin-top: 0;
  position: relative;
}
.card h2::after, .card h3::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  background: #68C55E;
  margin: 15px 0;
}
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 15px;
  margin: 20px 0;
}
.image-grid img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}
.image-grid img:hover {
  transform: scale(1.05);
}
pre {
  background: #2d2d2d;
  color: #f8f8f2;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.5;
  margin: 20px 0;
  box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
}
code {
  font-family: 'Courier New', monospace;
  background: rgba(104, 197, 94, 0.1);
  padding: 2px 5px;
  border-radius: 3px;
  color: #68C55E;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
th, td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid #eee;
}
th {
  background: #0E3D70;
  color: white;
}
tr:hover {
  background: rgba(69, 175, 255, 0.05);
}
.footer {
  background: linear-gradient(90deg, #0E3D70 0%, #45AFFF 100%);
  color: white;
  text-align: center;
  padding: 30px 0;
  margin-top: 50px;
  border-radius: 20px 20px 0 0;
}
@media (max-width: 768px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  .header h1 {
    font-size: 2rem;
  }
}
@keyframes pulse {
  0% { opacity: 0.5; transform: scale(0.95); }
  50% { opacity: 1; transform: scale(1.05); }
  100% { opacity: 0.5; transform: scale(0.95); }
}
.pulse {
  animation: pulse 3s ease infinite;
}