:root {
  --primary-gradient: linear-gradient(135deg, #56CCF2 0%, #2F80ED 100%);
  --secondary-gradient: linear-gradient(135deg, #6F00FF 0%, #B33771 100%);
  --accent-color: #6F00FF;
  --text-dark: #333;
  --text-light: #fff;
  --bg-light: #f8f9fa;
  --shadow-sm: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-md: 0 10px 15px rgba(0,0,0,0.2);
  --transition: all 0.3s ease;
}

@font-face {
  font-family: 'Roboto';
  src: url('https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxK.woff2') format('woff2');
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-light);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  background: var(--primary-gradient);
  color: var(--text-light);
  padding: 2rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--secondary-gradient);
  opacity: 0;
  transition: var(--transition);
  z-index: 1;
}

.header:hover::before {
  opacity: 1;
}

.header-content {
  position: relative;
  z-index: 2;
}

.notice {
  background: rgba(255,255,255,0.2);
  padding: 10px;
  border-radius: 5px;
  margin-bottom: 1rem;
  display: inline-block;
  backdrop-filter: blur(5px);
}

.main {
  padding: 3rem 0;
}

.article-container {
  background: white;
  border-radius: 15px;
  box-shadow: var(--shadow-sm);
  padding: 3rem;
  margin-bottom: 3rem;
}

h1, h2, h3, h4 {
  margin-bottom: 1.5rem;
  color: var(--text-dark);
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: 2rem;
  border-left: 5px solid var(--accent-color);
  padding-left: 1rem;
  margin-top: 3rem;
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
}

p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

pre {
  background: #2d2d2d;
  color: #f8f8f2;
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

code {
  font-family: 'Courier New', monospace;
  background: rgba(47, 128, 237, 0.1);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  color: var(--accent-color);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.image-card {
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.image-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-md);
}

.image-card img {
  width: 100%;
  height: auto;
  display: block;
}

.nav-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.nav-link {
  padding: 0.8rem 1.5rem;
  background: var(--primary-gradient);
  color: white;
  border-radius: 50px;
  text-decoration: none;
  transition: var(--transition);
  font-weight: 500;
}

.nav-link:hover {
  background: var(--secondary-gradient);
  transform: translateY(-3px);
}

.footer {
  background: var(--primary-gradient);
  color: white;
  padding: 2rem 0;
  text-align: center;
  margin-top: 3rem;
}

@media (max-width: 768px) {
  .article-container {
    padding: 2rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

.floating {
  animation: float 6s ease-in-out infinite;
}