:root {
    --primary: linear-gradient(135deg, #1e3c72, #2a5298);
    --secondary: linear-gradient(90deg, #ff7e5f, #feb47b);
    --accent: radial-gradient(circle, #ff6a00, #ee0979);
    --text-light: #ffffff;
    --text-dark: #2a2a2a;
    --card-bg: rgba(42, 42, 42, 0.8);
    --transition: all 0.3s ease;
  }

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

  body {
    background: var(--primary);
    color: var(--text-light);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  header {
    text-align: center;
    padding: 60px 0 40px;
    position: relative;
    overflow: hidden;
  }

  header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(-45deg, rgba(30, 60, 114, 0.8), rgba(42, 82, 152, 0.8));
    z-index: -1;
  }

  h1, h2, h3 {
    background: var(--secondary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 20px;
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
  }

  h2 {
    font-size: 2rem;
    margin-top: 40px;
  }

  h3 {
    font-size: 1.5rem;
  }

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

  .card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 4px solid #ff7e5f;
  }

  code {
    font-family: 'Courier New', Courier, monospace;
    color: #f8f8f2;
  }

  .gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .gallery img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
  }

  .gallery img:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  }

  .btn {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 12px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    margin: 20px 0;
    transition: var(--transition);
  }

  .btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(238, 9, 121, 0.4);
  }

  .floating {
    position: absolute;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: float 6s linear infinite;
  }

  @keyframes float {
    0% {
      transform: translateY(0) scale(1);
      opacity: 1;
    }
    100% {
      transform: translateY(-100px) scale(0.5);
      opacity: 0;
    }
  }

  .notice {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 30px 0;
    border-left: 4px solid #ff7e5f;
  }

  @media (max-width: 768px) {
    h1 {
      font-size: 2rem;
    }
    h2 {
      font-size: 1.7rem;
    }
    .card {
      padding: 20px;
    }
  }

  /* Floating elements */
  .floating:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
  }
  .floating:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: 1s;
  }
  .floating:nth-child(3) {
    top: 30%;
    left: 70%;
    animation-delay: 2s;
  }
  .floating:nth-child(4) {
    top: 80%;
    left: 20%;
    animation-delay: 3s;
  }