@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&family=Roboto:wght@400;500&display=swap');
  
  :root {
    --primary-dark: #1E3A8A;
    --primary-light: #635FC7;
    --accent-green: #4FFB90;
    --accent-orange: #FFBA08;
    --text-light: #E5E7EB;
    --bg-overlay: rgba(255, 255, 255, 0.1);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  }

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

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

  .design-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    z-index: 1000;
    font-size: 14px;
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 20px 50px;
  }

  /* Navigation */
  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(30, 58, 138, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    z-index: 1000;
    box-shadow: var(--shadow);
  }

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

  .nav-links a {
    color: white;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 16px;
    position: relative;
    transition: all 0.3s ease;
  }

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

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

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

  /* Hero Section */
  .hero {
    position: relative;
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 80px;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(78, 251, 144, 0.1) 0%, transparent 50%);
    z-index: -1;
  }

  .hero-content {
    text-align: center;
    max-width: 800px;
    padding: 0 20px;
  }

  .hero h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(90deg, white, var(--accent-green));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
  }

  .hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--text-light);
  }

  .hero-image {
    position: absolute;
    bottom: -50px;
    right: 5%;
    width: 400px;
    height: 400px;
    background: url('https://images.gptkong.com/demo/sample5.png') no-repeat center/contain;
    opacity: 0.8;
    z-index: -1;
    filter: drop-shadow(0 0 20px rgba(78, 251, 144, 0.3));
  }

  /* Article Content */
  article {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 60px;
    box-shadow: var(--shadow);
  }

  article h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: white;
    position: relative;
    padding-bottom: 15px;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
    border-radius: 2px;
  }

  article h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6rem;
    font-weight: 600;
    margin: 40px 0 20px;
    color: white;
  }

  article p {
    font-size: 1.1rem;
    margin-bottom: 25px;
    color: var(--text-light);
  }

  /* Code Blocks */
  pre {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    padding: 20px;
    margin: 25px 0;
    overflow: auto;
    border-left: 4px solid var(--accent-green);
  }

  code {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
    color: var(--accent-green);
  }

  /* Image Gallery */
  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .gallery-item {
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    height: 300px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
  }

  .gallery-item:hover {
    transform: translateY(-10px);
  }

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

  .gallery-item:hover img {
    transform: scale(1.05);
  }

  /* Cards */
  .feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 50px 0;
  }

  .card {
    background: var(--bg-overlay);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  }

  .card h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: white;
  }

  .card p {
    font-size: 1rem;
  }

  /* Responsive */
  @media (max-width: 992px) {
    .hero h1 {
      font-size: 2.8rem;
    }
    
    .hero-image {
      width: 300px;
      height: 300px;
    }
  }

  @media (max-width: 768px) {
    .navbar {
      flex-direction: column;
      padding: 15px;
    }
    
    .nav-links {
      margin-top: 15px;
      gap: 15px;
    }
    
    .hero {
      height: auto;
      padding: 120px 0 80px;
    }
    
    .hero h1 {
      font-size: 2.2rem;
    }
    
    .hero-image {
      position: relative;
      margin: 40px auto 0;
      right: auto;
      bottom: auto;
    }
    
    article {
      padding: 30px 20px;
    }
  }

  @media (max-width: 576px) {
    .hero h1 {
      font-size: 1.8rem;
    }
    
    article h2 {
      font-size: 1.8rem;
    }
    
    article h3 {
      font-size: 1.4rem;
    }
  }

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

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

  @keyframes pulse {
    0%, 100% {
      opacity: 1;
    }
    50% {
      opacity: 0.5;
    }
  }

  .pulse {
    animation: pulse 3s ease-in-out infinite;
  }