:root {
    --primary-color: #0d47a1;
    --secondary-color: #6a1b9a;
    --accent-color: #ff9800;
    --text-color: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.1);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

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

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

  header::after {
    content: "";
    display: block;
    width: 100px;
    height: 4px;
    background: var(--accent-color);
    margin: 20px auto;
    border-radius: 2px;
  }

  h1, h2, h3, h4 {
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
  }

  h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, #fff, #ff9800);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  h2 {
    font-size: 1.9rem;
    margin-top: 50px;
    position: relative;
    padding-left: 20px;
  }

  h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    height: 60%;
    width: 5px;
    background: var(--accent-color);
    border-radius: 3px;
  }

  h3 {
    font-size: 1.5rem;
    margin-top: 30px;
    color: #ffd54f;
  }

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

  .notice {
    background: rgba(255, 152, 0, 0.2);
    border-left: 4px solid var(--accent-color);
    padding: 15px;
    margin: 30px 0;
    border-radius: 0 4px 4px 0;
    font-size: 1rem;
  }

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

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

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

  .img-box {
    width: 320px;
    height: 320px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    position: relative;
  }

  .img-box:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  }

  .img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
  }

  .img-box:hover img {
    transform: scale(1.1);
  }

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

  code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #ffd54f;
  }

  .nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 40px 0;
  }

  .nav-link {
    padding: 10px 20px;
    background: rgba(255, 152, 0, 0.2);
    border-radius: 30px;
    text-decoration: none;
    color: white;
    transition: var(--transition);
    border: 1px solid rgba(255, 152, 0, 0.5);
  }

  .nav-link:hover {
    background: var(--accent-color);
    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;
    }
    h2 {
      font-size: 1.6rem;
    }
    h3 {
      font-size: 1.3rem;
    }
    .card {
      padding: 20px;
    }
  }

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

  .floating {
    animation: float 3s ease-in-out infinite;
  }

  .fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  }

  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }