:root {
    --primary: #0A192F;
    --secondary: #374785;
    --accent: #1ABC9C;
    --text: #FFFFFF;
    --highlight: #00FF7F;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }

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

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

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

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

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

  .header::after {
    content: '';
    display: block;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), transparent);
    margin: 20px auto;
  }

  h1, h2, h3, h4 {
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--highlight);
  }

  h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, var(--highlight), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  h2 {
    font-size: 2rem;
    position: relative;
    padding-bottom: 10px;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent);
  }

  h3 {
    font-size: 1.5rem;
    margin-top: 40px;
  }

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

  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  }

  .img-container {
    width: 100%;
    height: 200px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 20px;
    position: relative;
  }

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

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

  .code-block {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    border-left: 4px solid var(--accent);
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    background: rgba(255, 255, 255, 0.05);
  }

  th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  th {
    background: rgba(255, 255, 255, 0.1);
    color: var(--highlight);
  }

  .note {
    background: rgba(255, 255, 255, 0.05);
    border-left: 4px solid var(--highlight);
    padding: 20px;
    margin: 30px 0;
    border-radius: 0 5px 5px 0;
  }

  .btn {
    display: inline-block;
    background: linear-gradient(90deg, var(--accent), var(--highlight));
    color: var(--primary);
    padding: 12px 25px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(26, 188, 156, 0.4);
    transition: all 0.3s ease;
  }

  .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(26, 188, 156, 0.6);
  }

  .footer {
    text-align: center;
    padding: 30px;
    margin-top: 60px;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  @media (max-width: 768px) {
    .grid {
      grid-template-columns: 1fr;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.5rem;
    }
  }

  /* Animations */
  @keyframes float {
    0%, 100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-20px);
    }
  }

  .floating {
    animation: float 6s ease-in-out infinite;
  }

  /* Decorative elements */
  .decorative-circle {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(26, 188, 156, 0.1), transparent 70%);
    z-index: -1;
  }

  .circle-1 {
    top: -150px;
    right: -150px;
  }

  .circle-2 {
    bottom: -100px;
    left: -100px;
  }

  /* Data flow animation */
  .data-flow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
  }

  .flow-line {
    position: absolute;
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--accent), transparent);
    animation: flow 8s linear infinite;
  }

  @keyframes flow {
    0% {
      transform: translateY(-100%);
    }
    100% {
      transform: translateY(100%);
    }
  }