:root {
    --primary: #81C784;
    --secondary: #964B00;
    --light: #F5DEB3;
    --accent-blue: #82B1FF;
    --accent-orange: #FFAB40;
    --dark: #2E2E2E;
    --white: #FFFFFF;
    --gray: #F5F5F5;
  }

  @font-face {
    font-family: 'Roboto';
    src: url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');
  }

  body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, var(--light), var(--primary));
    color: var(--dark);
    line-height: 1.6;
  }

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

  .design-notice {
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    font-weight: 500;
    color: var(--secondary);
    border: 1px solid rgba(150, 75, 0, 0.2);
  }

  article {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    margin-bottom: 40px;
  }

  h2 {
    color: var(--secondary);
    font-size: 2.2rem;
    margin-top: 0;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary);
    position: relative;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100px;
    height: 4px;
    background: var(--accent-orange);
  }

  h3 {
    color: var(--primary);
    font-size: 1.6rem;
    margin-top: 30px;
    position: relative;
    padding-left: 15px;
  }

  h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 25px;
    background: var(--accent-blue);
    border-radius: 3px;
  }

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

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

  .image-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 300px;
    background-size: cover;
    background-position: center;
    position: relative;
  }

  .image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  }

  pre {
    background: var(--gray);
    border-radius: 8px;
    padding: 20px;
    overflow-x: auto;
    margin: 25px 0;
    border-left: 4px solid var(--primary);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
  }

  code {
    background: rgba(129, 199, 132, 0.1);
    padding: 2px 5px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: var(--secondary);
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  }

  th {
    background: var(--primary);
    color: white;
    padding: 12px;
    text-align: left;
  }

  td {
    padding: 12px;
    border-bottom: 1px solid #ddd;
  }

  tr:nth-child(even) {
    background-color: rgba(129, 199, 132, 0.05);
  }

  .nav-tabs {
    display: flex;
    flex-wrap: wrap;
    margin: 30px 0;
    background: var(--gray);
    border-radius: 8px;
    padding: 10px;
  }

  .nav-tab {
    padding: 10px 20px;
    margin: 0 5px;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 500;
  }

  .nav-tab:hover {
    background: rgba(129, 199, 132, 0.2);
  }

  .nav-tab.active {
    background: var(--primary);
    color: white;
  }

  .tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
  }

  .tab-content.active {
    display: block;
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  .floating-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--accent-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(255, 171, 64, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 100;
  }

  .floating-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(255, 171, 64, 0.6);
  }

  @media (max-width: 768px) {
    article {
      padding: 25px;
    }
    
    h2 {
      font-size: 1.8rem;
    }
    
    h3 {
      font-size: 1.4rem;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }