:root {
    --primary: #1e3c72;
    --secondary: #2a5298;
    --accent: #ff7e5f;
    --text: #ffffff;
    --highlight: #feb47b;
    --card-bg: rgba(255, 255, 255, 0.2);
  }

  @font-face {
    font-family: 'TechFont';
    src: local('Segoe UI'), local('Helvetica Neue'), sans-serif;
  }

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--text);
    font-family: 'TechFont', sans-serif;
    line-height: 1.6;
    min-height: 100%;
    overflow-x: hidden;
  }

  .container {
    max-width: 1200px;
    margin: 80px auto 40px;
    padding: 0 20px;
  }

  .hero {
    text-align: center;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
  }

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

  h1, h2, h3, h4 {
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.3;
  }

  h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, var(--highlight), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 30px;
  }

  h2 {
    font-size: 1.8rem;
    color: var(--highlight);
    position: relative;
    padding-bottom: 10px;
  }

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

  h3 {
    font-size: 1.5rem;
    color: var(--text);
    margin-top: 30px;
  }

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

  .card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.3);
  }

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

  .image-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin: 40px 0;
  }

  .decorative-img {
    width: 320px;
    height: 320px;
    border-radius: 16px;
    object-fit: cover;
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
  }

  .decorative-img:hover {
    transform: scale(1.03);
  }

  pre {
    background: rgba(0,0,0,0.3);
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 4px solid var(--accent);
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--highlight);
  }

  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(30, 60, 114, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    padding: 15px 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
  }

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

  .nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    position: relative;
    transition: color 0.3s ease;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--highlight);
    transition: width 0.3s ease;
  }

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

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

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

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

  @media (max-width: 768px) {
    .container {
      margin-top: 70px;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.6rem;
    }
    
    .nav-links {
      gap: 15px;
    }
    
    .grid {
      grid-template-columns: 1fr;
    }
  }

  /* Animations */
  @keyframes float {
    0%, 100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-10px);
    }
  }

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

  /* Code block styling */
  pre[class*="language-"] {
    position: relative;
  }

  pre[class*="language-"]::before {
    content: attr(class);
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent);
    color: white;
    padding: 2px 10px;
    font-size: 0.8rem;
    border-radius: 0 0 0 8px;
  }