:root {
    --primary: #0078FF;
    --secondary: #F5B041;
    --light-bg: linear-gradient(135deg, #F9F9F9, #EDEDED);
    --dark-text: #333333;
    --light-text: #FFFFFF;
    --card-bg: #FFFFFF;
    --border-color: #E0E0E0;
  }

  @import url('https://fonts.googleapis.com/css2?family=Roboto:wght@500;700&family=Open+Sans:wght@400;600&display=swap');

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

  body {
    background: var(--light-bg);
    font-family: 'Open Sans', sans-serif;
    color: var(--dark-text);
    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);
    color: white;
    padding: 10px 15px;
    border-radius: 20px;
    font-size: 14px;
    z-index: 1000;
  }

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

  .hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 60px;
  }

  .hero-content h1 {
    font-family: 'Roboto', sans-serif;
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero-image {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.5s ease;
  }

  .hero-image:hover {
    transform: translateY(-10px);
  }

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

  article {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    margin-bottom: 60px;
  }

  article h2 {
    font-family: 'Roboto', sans-serif;
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 15px;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
  }

  article h3 {
    font-family: 'Roboto', sans-serif;
    font-size: 1.5rem;
    color: var(--primary);
    margin: 30px 0 20px;
  }

  article p {
    margin-bottom: 20px;
    font-size: 1.1rem;
  }

  pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 25px 0;
    font-size: 0.95rem;
    line-height: 1.5;
    position: relative;
  }

  pre::before {
    content: 'CSS';
    position: absolute;
    top: 0;
    left: 0;
    background: var(--secondary);
    color: white;
    padding: 3px 10px;
    font-size: 0.8rem;
    border-radius: 0 0 5px 0;
  }

  code {
    font-family: 'Courier New', monospace;
  }

  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .gallery-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
  }

  .gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
  }

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

  .gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.1), rgba(0,0,0,0.5));
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .gallery-item:hover::after {
    opacity: 1;
  }

  .highlight {
    background: rgba(245, 176, 65, 0.2);
    padding: 2px 5px;
    border-radius: 3px;
    font-weight: 600;
  }

  .nav-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
  }

  .nav-tab {
    padding: 10px 20px;
    background: var(--card-bg);
    border-radius: 30px;
    font-family: 'Roboto', sans-serif;
    font-size: 0.9rem;
    color: var(--primary);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  }

  .nav-tab:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
  }

  @media (max-width: 768px) {
    .hero-section {
      grid-template-columns: 1fr;
    }
    
    article {
      padding: 30px 20px;
    }
    
    article h2 {
      font-size: 1.8rem;
    }
    
    article h3 {
      font-size: 1.3rem;
    }
  }

  @media (max-width: 480px) {
    .main-container {
      padding: 20px 15px;
    }
    
    .hero-content h1 {
      font-size: 2rem;
    }
    
    .image-gallery {
      grid-template-columns: 1fr;
    }
  }

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

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

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
  }

  .pulsing {
    animation: pulse 2s ease-in-out infinite;
  }