:root {
    --primary: #0d47a1;
    --secondary: #1565c0;
    --accent: #00e676;
    --highlight: #ff9800;
    --text: #ffffff;
    --bg-gradient: linear-gradient(135deg, var(--primary), var(--secondary));
  }

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

  body {
    background: var(--bg-gradient);
    color: var(--text);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    min-height: 100%;
    overflow-x: hidden;
  }

  .design-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0,0,0,0.7);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 14px;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
  }

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

  header {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
  }

  h1, h2, h3, h4 {
    font-weight: 500;
    margin: 1.5em 0 0.8em;
    color: var(--accent);
  }

  h2 {
    font-size: 2.2rem;
    position: relative;
    display: inline-block;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--highlight);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
  }

  h2:hover::after {
    transform: scaleX(1);
  }

  h3 {
    font-size: 1.8rem;
    border-left: 4px solid var(--highlight);
    padding-left: 15px;
  }

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

  article {
    background: rgba(13, 71, 161, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    margin-bottom: 40px;
  }

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

  .image-card {
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
  }

  .image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
  }

  .image-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
  }

  .image-card:hover img {
    transform: scale(1.05);
  }

  pre {
    background: rgba(0,0,0,0.3);
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    font-family: 'Courier New', monospace;
    position: relative;
  }

  pre::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(0,230,118,0.1));
    z-index: -1;
    border-radius: 8px;
  }

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

  .nav-container {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0,150,136,0.9);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.2);
  }

  nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .nav-links {
    display: flex;
    gap: 25px;
  }

  .nav-links a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--highlight);
    transition: width 0.3s;
  }

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

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

  .scroll-indicator {
    position: fixed;
    top: 50%;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
  }

  .scroll-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all 0.3s;
  }

  .scroll-dot.active {
    background: var(--highlight);
    transform: scale(1.3);
  }

  @media (max-width: 768px) {
    .container {
      margin-top: 70px;
    }
    
    article {
      padding: 25px;
    }
    
    .nav-links {
      gap: 15px;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
    
    h2 {
      font-size: 1.8rem;
    }
    
    h3 {
      font-size: 1.5rem;
    }
  }

  @media (max-width: 480px) {
    .container {
      padding: 0 15px;
    }
    
    article {
      padding: 20px;
    }
    
    .nav-container {
      padding: 10px 15px;
    }
    
    .nav-links {
      display: none;
    }
  }