@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');
  
  :root {
    --primary: #0d1b2a;
    --secondary: #1b263b;
    --accent1: #00d2ff;
    --accent2: #3a7bd5;
    --accent3: #7b2cbf;
    --text: #e0e1dd;
    --card-bg: rgba(27, 38, 59, 0.8);
  }
  
  * {
    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: 0 20px;
  }
  
  /* Header */
  header {
    background: rgba(13, 27, 42, 0.9);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(0, 210, 255, 0.2);
  }
  
  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--accent1), var(--accent3));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-decoration: none;
  }
  
  .nav-links {
    display: flex;
    gap: 30px;
  }
  
  .nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
  }
  
  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
    transition: width 0.3s ease;
  }
  
  .nav-links a:hover {
    color: var(--accent1);
  }
  
  .nav-links a:hover::after {
    width: 100%;
  }
  
  /* Hero Section */
  .hero {
    height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
  }
  
  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(0, 210, 255, 0.1) 0%, transparent 50%);
    z-index: -1;
  }
  
  .hero-content {
    max-width: 600px;
  }
  
  .hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--accent1), var(--accent3));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
  }
  
  .hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
  }
  
  .hero-image {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 50%;
    max-width: 600px;
    height: 80%;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  }
  
  .hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    transition: transform 0.5s ease;
  }
  
  .hero-image:hover img {
    transform: scale(1.05);
  }
  
  /* Main Content */
  main {
    padding: 80px 0;
  }
  
  section {
    margin-bottom: 80px;
  }
  
  h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
    color: var(--accent1);
    position: relative;
    display: inline-block;
  }
  
  h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent1), transparent);
  }
  
  h3 {
    font-size: 1.8rem;
    margin: 30px 0 20px;
    color: var(--accent2);
  }
  
  p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    line-height: 1.8;
  }
  
  /* Code Blocks */
  pre {
    background: rgba(13, 27, 42, 0.8);
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow-x: auto;
    border-left: 4px solid var(--accent1);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  }
  
  code {
    font-family: 'Roboto Mono', monospace;
    color: var(--accent1);
    font-size: 0.9rem;
  }
  
  /* Cards */
  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }
  
  .card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 210, 255, 0.1);
  }
  
  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(0, 210, 255, 0.3);
  }
  
  .card h3 {
    margin-top: 0;
  }
  
  /* Table */
  table {
    width: 100%;
    border-collapse: collapse;
    margin: 40px 0;
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  }
  
  th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(0, 210, 255, 0.1);
  }
  
  th {
    background: rgba(0, 210, 255, 0.1);
    color: var(--accent1);
    font-weight: 500;
  }
  
  tr:hover {
    background: rgba(0, 210, 255, 0.05);
  }
  
  /* Footer */
  footer {
    background: rgba(13, 27, 42, 0.9);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(0, 210, 255, 0.2);
  }
  
  .footer-content {
    max-width: 800px;
    margin: 0 auto;
  }
  
  .footer-note {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: 20px;
  }
  
  /* Responsive */
  @media (max-width: 992px) {
    .hero {
      height: auto;
      padding: 100px 0;
    }
    
    .hero-content {
      max-width: 100%;
    }
    
    .hero-image {
      position: relative;
      width: 100%;
      max-width: 100%;
      margin-top: 50px;
      transform: none;
    }
    
    h1 {
      font-size: 2.5rem;
    }
  }
  
  @media (max-width: 768px) {
    .nav-links {
      gap: 15px;
    }
    
    .hero h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.8rem;
    }
    
    h3 {
      font-size: 1.5rem;
    }
  }
  
  @media (max-width: 576px) {
    .header-content {
      flex-direction: column;
      gap: 20px;
    }
    
    .nav-links {
      flex-wrap: wrap;
      justify-content: center;
    }
  }
  
  /* Animations */
  @keyframes float {
    0%, 100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-20px);
    }
  }
  
  .floating {
    animation: float 6s ease-in-out infinite;
  }
  
  /* Blockchain Nodes */
  .blockchain-node {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--accent1);
    border-radius: 50%;
    opacity: 0.7;
    animation: float 4s ease-in-out infinite;
  }
  
  .node-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
  }
  
  .node-2 {
    top: 60%;
    left: 15%;
    animation-delay: 0.5s;
  }
  
  .node-3 {
    top: 30%;
    right: 10%;
    animation-delay: 1s;
  }
  
  .node-4 {
    bottom: 20%;
    right: 15%;
    animation-delay: 1.5s;
  }
  
  /* Buttons */
  .btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(45deg, var(--accent1), var(--accent2));
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.3);
  }
  
  .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 210, 255, 0.4);
    background: linear-gradient(45deg, var(--accent2), var(--accent1));
  }
  
  /* Image Gallery */
  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }
  
  .gallery-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
  }
  
  .gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  }
  
  .gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
  }
  
  .gallery-item:hover img {
    transform: scale(1.1);
  }