:root {
    --primary: #002147;
    --secondary: #4caf50;
    --accent: #ff5722;
    --bg-light: #f0f4f8;
    --bg-dark: #0a192f;
    --text: #333333;
    --light: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  }

  @import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&family=Roboto:wght@300;400;500&display=swap');

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

  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: linear-gradient(135deg, var(--bg-light), #d9e2ec);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    min-height: 100%;
    overflow-x: hidden;
  }

  @keyframes gradientAnimation {
    0% {background-position: 0% 50%;}
    50% {background-position: 100% 50%;}
    100% {background-position: 0% 50%;}
  }

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

  /* Header Styles */
  header {
    background: rgba(0, 33, 71, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow);
    padding: 15px 0;
  }

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

  .logo {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--light);
    font-size: 24px;
    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: all 0.3s ease;
    position: relative;
  }

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

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

  /* Hero Section */
  .hero {
    padding: 180px 0 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(255, 152, 0, 0.1) 0%, transparent 50%);
    z-index: -1;
    animation: pulse 8s ease infinite alternate;
  }

  @keyframes pulse {
    0% {opacity: 0.3; transform: scale(1);}
    100% {opacity: 0.6; transform: scale(1.1);}
  }

  .hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }

  .hero-text h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    line-height: 1.2;
  }

  .hero-text p {
    font-size: 18px;
    margin-bottom: 30px;
    color: var(--text);
  }

  .hero-image {
    position: relative;
    perspective: 1000px;
  }

  .hero-image-inner {
    position: relative;
    transform: rotateY(15deg);
    transition: transform 0.5s ease;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-radius: 20px;
    overflow: hidden;
  }

  .hero-image:hover .hero-image-inner {
    transform: rotateY(0deg);
  }

  .hero-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
  }

  /* Main Content */
  main {
    padding: 80px 0;
  }

  article {
    background: var(--light);
    border-radius: 20px;
    padding: 50px;
    box-shadow: var(--shadow);
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
  }

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

  h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 30px;
    position: relative;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent);
  }

  h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin: 40px 0 20px;
  }

  p {
    font-size: 17px;
    margin-bottom: 20px;
    color: var(--text);
  }

  /* Code Blocks */
  pre {
    background: var(--bg-dark);
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.3);
  }

  code {
    font-family: 'Roboto Mono', monospace;
    color: #f8f8f2;
    font-size: 14px;
  }

  .language-css {
    color: #f8f8f2;
  }

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

  .image-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

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

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

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

  /* Footer */
  footer {
    background: var(--primary);
    color: var(--light);
    padding: 50px 0 20px;
    text-align: center;
  }

  .footer-content {
    max-width: 800px;
    margin: 0 auto;
  }

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
  }

  .footer-links a {
    color: var(--light);
    text-decoration: none;
    transition: color 0.3s ease;
  }

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

  .copyright {
    font-size: 14px;
    opacity: 0.8;
  }

  /* Responsive */
  @media (max-width: 992px) {
    .hero-content {
      grid-template-columns: 1fr;
    }
    
    .hero-text {
      order: 1;
    }
    
    .hero-image {
      order: 2;
    }
  }

  @media (max-width: 768px) {
    .nav-links {
      display: none;
    }
    
    .hamburger-menu {
      display: block;
    }
    
    h1 {
      font-size: 36px;
    }
    
    article {
      padding: 30px;
    }
  }

  /* Special Notice */
  .notice {
    background: rgba(255, 87, 34, 0.1);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin: 30px 0;
    border-radius: 0 8px 8px 0;
  }

  .notice p {
    margin: 0;
    color: var(--accent);
    font-weight: 500;
  }