:root {
    --primary: #121212;
    --secondary: #63B8FF;
    --accent: #7F00FF;
    --light: #E5E5E5;
    --dark: #1E1E1E;
    --transition: all 0.3s ease;
  }

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

  body {
    font-family: 'Orbitron', 'Open Sans', sans-serif;
    background: linear-gradient(135deg, var(--primary), #1a1a2e);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  /* Header Styles */
  header {
    background: rgba(18, 18, 18, 0.9);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(99, 184, 255, 0.2);
  }

  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
  }

  .logo span {
    color: var(--accent);
  }

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

  .nav-links a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
  }

  .nav-links a:hover {
    color: var(--secondary);
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: var(--transition);
  }

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

  /* Hero Section */
  .hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 30%, rgba(99, 184, 255, 0.1) 0%, transparent 50%);
    z-index: -1;
  }

  .hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
  }

  .hero-text h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
  }

  .hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .hero-image img {
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    z-index: 2;
  }

  .hero-image::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent), transparent 70%);
    filter: blur(60px);
    opacity: 0.3;
    animation: pulse 8s infinite alternate;
  }

  @keyframes pulse {
    0% { transform: scale(0.8); opacity: 0.3; }
    100% { transform: scale(1.2); opacity: 0.5; }
  }

  /* Main Content */
  main {
    padding: 100px 0;
  }

  section {
    margin-bottom: 100px;
  }

  section h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
  }

  section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
  }

  article {
    background: rgba(30, 30, 30, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: 60px;
  }

  article h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--secondary);
  }

  article h3 {
    font-size: 1.5rem;
    margin: 30px 0 20px;
    color: var(--light);
  }

  article p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
  }

  article strong {
    color: var(--secondary);
  }

  article em {
    color: var(--accent);
    font-style: normal;
  }

  /* Code Blocks */
  pre {
    background: rgba(18, 18, 18, 0.8);
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    border-left: 3px solid var(--secondary);
  }

  code {
    font-family: 'Fira Code', monospace;
    color: var(--light);
    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: rgba(30, 30, 30, 0.7);
    border-radius: 15px;
    padding: 30px;
    transition: var(--transition);
    border: 1px solid rgba(99, 184, 255, 0.1);
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(99, 184, 255, 0.3);
  }

  .card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 20px;
    transition: var(--transition);
  }

  .card:hover img {
    transform: scale(1.05);
  }

  .card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--secondary);
  }

  /* Buttons */
  .btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(45deg, var(--secondary), var(--accent));
    color: var(--light);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(99, 184, 255, 0.3);
  }

  .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 184, 255, 0.4);
  }

  .btn-outline {
    background: transparent;
    border: 2px solid var(--secondary);
    color: var(--secondary);
    box-shadow: none;
  }

  .btn-outline:hover {
    background: var(--secondary);
    color: var(--primary);
  }

  /* Footer */
  footer {
    background: rgba(18, 18, 18, 0.9);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(99, 184, 255, 0.2);
  }

  .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
  }

  .footer-column h3 {
    color: var(--secondary);
    margin-bottom: 20px;
    font-size: 1.2rem;
  }

  .footer-links {
    list-style: none;
  }

  .footer-links li {
    margin-bottom: 10px;
  }

  .footer-links a {
    color: var(--light);
    text-decoration: none;
    transition: var(--transition);
    opacity: 0.8;
  }

  .footer-links a:hover {
    color: var(--secondary);
    opacity: 1;
  }

  .copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
  }

  /* Star Background */
  .stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
  }

  .star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle var(--duration, 5s) infinite ease-in-out;
    opacity: var(--opacity, 0.5);
  }

  @keyframes twinkle {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
  }

  /* Responsive */
  @media (max-width: 992px) {
    .hero-content {
      grid-template-columns: 1fr;
      text-align: center;
    }

    .hero-image {
      order: -1;
      margin-bottom: 40px;
    }

    .nav-links {
      gap: 20px;
    }
  }

  @media (max-width: 768px) {
    .nav-links {
      display: none;
    }

    article {
      padding: 30px 20px;
    }

    section h2 {
      font-size: 2rem;
    }

    article h2 {
      font-size: 1.8rem;
    }
  }

  /* Notification */
  .notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(30, 30, 30, 0.9);
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border-left: 4px solid var(--accent);
    transform: translateX(calc(100% + 20px));
    transition: transform 0.5s ease;
    z-index: 1001;
  }

  .notification.show {
    transform: translateX(0);
  }