:root {
    --primary: #0d1b2a;
    --secondary: #1b263b;
    --accent: #00ffcc;
    --highlight: #cc00ff;
    --text: #ffffff;
    --card-bg: rgba(27, 38, 59, 0.8);
    --transition: all 0.3s ease;
  }

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--text);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    padding-top: 80px;
    overflow-x: hidden;
  }

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

  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(27, 38, 59, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
  }

  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    font-size: 24px;
    font-weight: 500;
    background: linear-gradient(45deg, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .notice {
    background: rgba(0, 255, 204, 0.1);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin-bottom: 30px;
    border-radius: 0 8px 8px 0;
  }

  article {
    background: rgba(27, 38, 59, 0.5);
    backdrop-filter: blur(5px);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  h2 {
    font-size: 32px;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  h3 {
    font-size: 24px;
    margin: 30px 0 15px;
    color: var(--accent);
  }

  p {
    margin-bottom: 20px;
    font-size: 17px;
  }

  .highlight {
    background: linear-gradient(45deg, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 500;
  }

  pre {
    background: var(--primary);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    overflow: hidden;
    border-left: 4px solid var(--accent);
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--accent);
    font-size: 15px;
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
  }

  .image-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  }

  .image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  }

  .image-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
  }

  .nav-links {
    display: flex;
    gap: 20px;
  }

  .nav-links a {
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
  }

  .nav-links a:hover {
    color: var(--accent);
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
  }

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

  @media (max-width: 768px) {
    .header-content {
      flex-direction: column;
      gap: 15px;
    }

    .nav-links {
      width: 100%;
      justify-content: space-around;
    }

    h2 {
      font-size: 28px;
    }

    h3 {
      font-size: 22px;
    }
  }

  @media (max-width: 500px) {
    .image-grid {
      grid-template-columns: 1fr;
    }

    article {
      padding: 20px;
    }
  }

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

  .floating {
    animation: float 3s ease-in-out infinite;
  }