:root {
    --primary-bg: #1E212A;
    --secondary-bg: #4A56D7;
    --accent: #FF5C8D;
    --text-light: #FFFFFF;
    --text-muted: #B3BACD;
    --card-bg: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
  }

  body {
    background: var(--primary-bg);
    color: var(--text-light);
    line-height: 1.6;
    padding-top: 80px;
    overflow-x: hidden;
  }

  .header-banner {
    background: linear-gradient(135deg, rgba(30, 33, 42, 0.9), rgba(74, 86, 215, 0.7));
    backdrop-filter: blur(10px);
    padding: 2rem;
    text-align: center;
    margin-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .header-banner h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #4A56D7, #FF5C8D);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .header-banner p {
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto;
  }

  .reference-note {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 15px;
    border-radius: 20px;
    backdrop-filter: blur(5px);
    font-size: 0.8rem;
    z-index: 1000;
  }

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

  article {
    background: rgba(30, 33, 42, 0.7);
    backdrop-filter: blur(5px);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  article h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    position: relative;
    padding-bottom: 10px;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, #4A56D7, #FF5C8D);
  }

  article h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--text-light);
  }

  article p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 2rem 0;
  }

  .image-card {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
  }

  .image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  }

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

  .image-card:hover img {
    transform: scale(1.05);
  }

  pre {
    background: rgba(30, 33, 42, 0.9);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    overflow: auto;
    border-left: 4px solid var(--accent);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
  }

  code {
    color: #FF5C8D;
    font-family: 'Courier New', monospace;
  }

  .nav-tabs {
    display: flex;
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-tab {
    padding: 0.8rem 1.5rem;
    cursor: pointer;
    position: relative;
    color: var(--text-muted);
    transition: var(--transition);
  }

  .nav-tab:hover {
    color: var(--text-light);
  }

  .nav-tab.active {
    color: var(--text-light);
  }

  .nav-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, #4A56D7, #FF5C8D);
  }

  .section-divider {
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(74, 86, 215, 0.5), transparent);
    margin: 3rem 0;
  }

  .floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
  }

  .shape {
    position: absolute;
    opacity: 0.1;
    animation: float 15s infinite linear;
  }

  .shape-1 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #4A56D7, #FF5C8D);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
  }

  .shape-2 {
    width: 150px;
    height: 150px;
    background: linear-gradient(45deg, #FF5C8D, #4A56D7);
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    top: 60%;
    left: 80%;
    animation-delay: 3s;
  }

  .shape-3 {
    width: 100px;
    height: 100px;
    background: linear-gradient(225deg, #4A56D7, #00FF7F);
    border-radius: 50% 20% 20% 50% / 50% 50% 50% 50%;
    top: 30%;
    left: 70%;
    animation-delay: 6s;
  }

  @keyframes float {
    0% {
      transform: translate(0, 0) rotate(0deg);
    }
    25% {
      transform: translate(50px, 50px) rotate(90deg);
    }
    50% {
      transform: translate(100px, 0) rotate(180deg);
    }
    75% {
      transform: translate(50px, -50px) rotate(270deg);
    }
    100% {
      transform: translate(0, 0) rotate(360deg);
    }
  }

  @media (max-width: 768px) {
    .header-banner h1 {
      font-size: 2rem;
    }
    
    article {
      padding: 1.5rem;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
    
    .nav-tabs {
      flex-wrap: wrap;
    }
    
    .nav-tab {
      padding: 0.5rem 1rem;
    }
  }

  @media (max-width: 480px) {
    .header-banner h1 {
      font-size: 1.8rem;
    }
    
    article h2 {
      font-size: 1.5rem;
    }
    
    article h3 {
      font-size: 1.3rem;
    }
    
    pre {
      padding: 1rem;
      font-size: 0.8rem;
    }
  }