:root {
    --primary: #0d47a1;
    --secondary: #1976d2;
    --accent: #ffeb3b;
    --light: #f5f5f5;
    --dark: #212121;
    --text: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

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

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

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

  header {
    padding: 30px 0;
    text-align: center;
    position: relative;
    z-index: 10;
  }

  .header-content {
    background: rgba(13, 71, 161, 0.8);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--accent), #ffcc00);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  }

  .notice {
    display: inline-block;
    padding: 10px 20px;
    background: var(--accent);
    color: var(--primary);
    border-radius: 50px;
    font-weight: bold;
    margin: 20px 0;
    box-shadow: 0 4px 15px rgba(255, 235, 59, 0.3);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
  }

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

  .card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

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

  .card img {
    width: 100%;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
  }

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

  h2 {
    font-size: 1.8rem;
    margin: 40px 0 20px;
    color: var(--accent);
    position: relative;
    display: inline-block;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
  }

  h3 {
    font-size: 1.4rem;
    margin: 30px 0 15px;
    color: var(--light);
  }

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

  article {
    background: rgba(25, 118, 210, 0.2);
    padding: 40px;
    border-radius: 16px;
    margin: 50px 0;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  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(--accent);
    font-size: 0.9rem;
  }

  span {
    color: var(--accent);
    font-weight: bold;
  }

  .nav-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
    flex-wrap: wrap;
  }

  .nav-link {
    color: var(--text);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 50px;
    background: rgba(255, 235, 59, 0.1);
    border: 1px solid rgba(255, 235, 59, 0.3);
    transition: var(--transition);
  }

  .nav-link:hover {
    background: rgba(255, 235, 59, 0.3);
    transform: translateY(-3px);
  }

  footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 50px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  @media (max-width: 768px) {
    h1 {
      font-size: 2rem;
    }
    
    .grid {
      grid-template-columns: 1fr;
    }
    
    article, .header-content {
      padding: 30px 20px;
    }
  }

  /* Particle decoration */
  .particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 8s infinite ease-in-out;
    z-index: -1;
  }

  @keyframes float {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(20px, -30px); }
    50% { transform: translate(40px, 0); }
    75% { transform: translate(20px, 30px); }
  }

  /* Generate random particles */
  body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background: 
      radial-gradient(circle at 20% 30%, rgba(255, 235, 59, 0.1) 0%, transparent 20%),
      radial-gradient(circle at 80% 70%, rgba(255, 235, 59, 0.1) 0%, transparent 20%);
  }