:root {
    --primary: #121212;
    --secondary: #1E1E1E;
    --accent-blue: #3F5EFB;
    --accent-green: #4CAF50;
    --accent-orange: #FF9800;
    --text-light: #F5F5F5;
    --text-gray: #CCCCCC;
  }

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

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

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px 40px;
  }

  .header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
  }

  .header::after {
    content: "";
    display: block;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    margin: 20px auto;
    border-radius: 2px;
  }

  .notice {
    background: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(10px);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 40px;
    border-left: 4px solid var(--accent-orange);
    font-size: 14px;
  }

  .grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
  }

  article {
    background: var(--secondary);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-light);
    position: relative;
    padding-bottom: 10px;
  }

  h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), transparent);
  }

  h3 {
    font-size: 22px;
    margin: 30px 0 15px;
    color: var(--accent-blue);
  }

  p {
    margin-bottom: 20px;
    font-size: 16px;
  }

  .highlight-blue {
    color: var(--accent-blue);
    font-weight: 500;
  }

  .highlight-green {
    color: var(--accent-green);
  }

  .highlight-orange {
    color: var(--accent-orange);
  }

  pre {
    background: #2C2C2C;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 4px solid var(--accent-blue);
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--text-light);
    font-size: 14px;
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .decor-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
  }

  .decor-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(63, 94, 251, 0.3);
  }

  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(30, 30, 30, 0.95);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  }

  .nav-links {
    display: flex;
    gap: 30px;
  }

  .nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s;
  }

  .nav-link:hover {
    color: var(--accent-blue);
  }

  .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s;
  }

  .nav-link:hover::after {
    width: 100%;
  }

  .logo {
    font-size: 20px;
    font-weight: bold;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .logo::before {
    content: "";
    display: block;
    width: 30px;
    height: 30px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
    border-radius: 6px;
  }

  @media (max-width: 768px) {
    .grid-layout {
      grid-template-columns: 1fr;
    }
    
    .navbar {
      padding: 15px 20px;
    }
    
    .nav-links {
      gap: 15px;
    }
    
    article {
      padding: 30px;
    }
  }

  @media (max-width: 480px) {
    .container {
      padding: 70px 15px 30px;
    }
    
    h2 {
      font-size: 24px;
    }
    
    h3 {
      font-size: 20px;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }

  /* Animation */
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

  .floating {
    animation: float 4s ease-in-out infinite;
  }