@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap');
  
  :root {
    --primary: #4B0082;
    --secondary: #8A2BE2;
    --accent: #FF4500;
    --neutral: #F5F5DC;
    --text: #333333;
    --neon-green: #39FF14;
    --neon-pink: #FF1493;
    --dark-bg: #2F4F4F;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Helvetica', sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  .background-texture {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPgogIDxwYXRoIGQ9Ik0wLDAgVjEwMCBIMTAwIiBmaWxsPSJub25lIiBzdHJva2U9IiNEQkREQkQiIHN0cm9rZS13aWR0aD0iMSIvPgo8L3N2Zz4=');
    opacity: 0.05;
    pointer-events: none;
    z-index: -1;
  }
  
  .header {
    padding: 2rem;
    text-align: center;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--accent);
  }
  
  .header h1 {
    font-family: 'Orbitron', sans-serif;
    color: var(--neon-green);
    text-shadow: 0 0 10px var(--neon-green);
    font-size: 2.5rem;
    margin-bottom: 1rem;
  }
  
  .tagline {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 1rem;
  }
  
  .notice {
    background: rgba(255,69,0,0.2);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--accent);
    color: white;
    font-size: 0.9rem;
    margin-top: 1rem;
    display: inline-block;
  }
  
  .nav-container {
    display: flex;
    justify-content: center;
    background: rgba(0,0,0,0.5);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(5px);
  }
  
  .nav-menu {
    display: flex;
    gap: 2rem;
    max-width: 1200px;
    width: 100%;
    justify-content: center;
  }
  
  .nav-item {
    position: relative;
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    padding: 0.5rem 1rem;
    transition: all 0.3s;
  }
  
  .nav-item::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--neon-pink);
    transition: all 0.3s;
  }
  
  .nav-item:hover {
    color: var(--neon-green);
  }
  
  .nav-item:hover::after {
    width: 100%;
    left: 0;
    box-shadow: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-pink);
  }
  
  .main-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
  }
  
  article {
    background: rgba(245,245,220,0.9);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  }
  
  article h2 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent);
    text-shadow: 0 0 5px rgba(255,69,0,0.5);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--secondary);
    padding-bottom: 0.5rem;
  }
  
  article h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem;
  }
  
  article p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
  }
  
  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
  }
  
  .decor-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 3px solid var(--neutral);
  }
  
  .decor-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  }
  
  pre {
    background: var(--dark-bg);
    color: white;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
    position: relative;
  }
  
  pre::before {
    content: 'CSS';
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 0 0 0 5px;
    font-size: 0.8rem;
  }
  
  code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
  }
  
  .btn-neon {
    background-color: var(--neon-green);
    border: none;
    padding: 12px 24px;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 4px;
    box-shadow: 0 0 5px var(--neon-green), 0 0 10px var(--neon-green), 0 0 20px var(--neon-green);
    transition: all 0.3s;
    font-weight: bold;
    margin: 1rem 0;
    display: inline-block;
  }
  
  .btn-neon:hover {
    box-shadow: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-pink), 0 0 30px var(--neon-pink);
    transform: scale(1.05);
  }
  
  .card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
  }
  
  .card {
    background-color: var(--neutral);
    border: 2px solid #D2B48C;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    padding: 1.5rem;
    transition: all 0.3s;
  }
  
  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
  }
  
  .card h4 {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.2rem;
  }
  
  .footer {
    background: rgba(0,0,0,0.7);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    border-top: 2px solid var(--accent);
  }
  
  @keyframes neonGlow {
    0% { box-shadow: 0 0 5px var(--neon-green); }
    100% { box-shadow: 0 0 20px var(--neon-green); }
  }
  
  @keyframes spin {
    to { transform: rotate(360deg); }
  }
  
  @media (max-width: 768px) {
    .nav-menu {
      flex-direction: column;
      align-items: center;
      gap: 1rem;
    }
    
    .header h1 {
      font-size: 2rem;
    }
    
    article {
      padding: 1.5rem;
    }
  }