/* Reset and basic styles */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: url('https://images.gptkong.com/article/b/938_0.png') no-repeat center center fixed;
    background-size: cover;
    position: relative;
    overflow-x: hidden;
  }
  header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
  }
  nav a {
    margin: 0 15px;
    text-decoration: none;
    color: #2c3e50;
    font-size: 16px;
    position: relative;
    transition: color 0.3s ease;
  }
  nav a::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background: #2980b9;
    transition: width 0.3s;
    position: absolute;
    bottom: -5px;
    left: 0;
  }
  nav a:hover::after {
    width: 100%;
  }
  main {
    max-width: 900px;
    margin: 120px auto 50px;
    padding: 0 20px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
  section {
    padding: 40px 0;
    position: relative;
  }
  section:not(:last-of-type) {
    border-bottom: 1px solid #e0e0e0;
  }
  h2, h3 {
    color: #2980b9;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
  }
  h2::after, h3::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: #2980b9;
    position: absolute;
    bottom: 0;
    left: 0;
    border-radius: 2px;
  }
  p {
    margin-bottom: 20px;
    font-size: 16px;
    color: #34495e;
    text-align: justify;
  }
  img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
  }
  /* Responsive Images */
  img[src*="sample1.png"],
  img[src*="sample2.png"] {
    max-width: 900px;
    min-width: 500px;
  }
  img[src*="sample3.png"] {
    max-width: 600px;
    min-width: 300px;
  }
  /* Navigation Links */
  nav a {
    font-size: 16px;
    color: #2c3e50;
    text-decoration: none;
    margin: 0 15px;
    position: relative;
  }
  nav a:hover {
    color: #2980b9;
  }
  /* Dynamic Background Effects */
  .petal {
    position: fixed;
    top: -10px;
    width: 10px;
    height: 10px;
    background: rgba(255, 192, 203, 0.7);
    transform: rotate(45deg);
    animation: fall 10s linear infinite;
    pointer-events: none;
  }
  @keyframes fall {
    to {
      transform: translateY(100vh) rotate(360deg);
    }
  }
  /* Generate multiple petals */
  body::before, body::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: transparent;
    pointer-events: none;
  }
  /* Footer */
  footer {
    text-align: center;
    padding: 20px 0;
    color: #7f8c8d;
    font-size: 14px;
  }
  /* Media Queries */
  @media (max-width: 768px) {
    nav {
      flex-direction: column;
    }
    nav a {
      margin: 10px 0;
    }
    main {
      margin: 100px auto 20px;
    }
  }
  @media (max-width: 480px) {
    h2 {
      font-size: 20px;
    }
    h3 {
      font-size: 18px;
    }
    p {
      font-size: 15px;
    }
    nav a {
      font-size: 14px;
    }
  }
  /* Adding Petals */
  @for $i from 1 through 20 {
    .petal:nth-child(#{$i}) {
      left: #{random(100)}%;
      animation-delay: #{random(10)}s;
      width: #{random(8) + 5}px;
      height: #{random(8) + 5}px;
      background: rgba(173, 216, 230, 0.6);
      opacity: 0.7;
    }
  }