:root {
    --primary: #E0F7FA;
    --primary-dark: #B2FFFC;
    --secondary: #EEEEEE;
    --accent: #A142F4;
    --accent-dark: #8A32D1;
    --text: #333333;
    --card-bg: rgba(238, 238, 238, 0.3);
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    backdrop-filter: blur(10px);
    min-height: 100%;
    line-height: 1.6;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
  }

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

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

  .header h1 {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(161, 66, 244, 0.2);
  }

  .header p {
    font-size: 1.2rem;
    color: var(--text);
    max-width: 800px;
    margin: 0 auto;
  }

  .notice {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

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

  .card {
    background: var(--card-bg);
    border-radius: 15px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 30px;
    transition: transform 0.3s, box-shadow 0.3s;
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
  }

  .card h2, .card h3 {
    color: var(--accent);
    margin-bottom: 20px;
    position: relative;
  }

  .card h2::after, .card h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
  }

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

  .image-gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 30px 0;
    justify-content: center;
  }

  .image-container {
    width: 150px;
    height: 150px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
  }

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

  .image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
  }

  .image-container:hover img {
    transform: scale(1.1);
  }

  pre {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    padding: 20px;
    overflow: auto;
    margin: 20px 0;
    font-family: 'Courier New', monospace;
    position: relative;
  }

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

  code {
    font-family: 'Courier New', monospace;
    color: #f8f8f2;
    background: transparent;
  }

  .button {
    display: inline-block;
    background-color: var(--accent);
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    transition: transform 0.3s, background-color 0.3s;
    font-weight: bold;
    margin: 10px 0;
    text-decoration: none;
  }

  .button:hover {
    transform: scale(1.05);
    background-color: var(--accent-dark);
  }

  .spinner {
    border: 8px solid var(--secondary);
    border-top: 8px solid var(--accent);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: rotate 2s linear infinite;
    margin: 20px auto;
  }

  @keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }

  .nav {
    position: sticky;
    top: 0;
    background: rgba(224, 247, 250, 0.9);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  }

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

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

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

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

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
  }

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

  @media (max-width: 768px) {
    .grid {
      grid-template-columns: 1fr;
    }
    
    .nav-container {
      flex-direction: column;
      gap: 15px;
    }
    
    .nav-links {
      flex-wrap: wrap;
      justify-content: center;
    }
    
    .header h1 {
      font-size: 2rem;
    }
  }

  footer {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    margin-top: 60px;
  }