@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Open+Sans:wght@400;600&display=swap');
  
  :root {
    --primary-dark: #0D47A1;
    --primary-light: #1E88E5;
    --accent-orange: #FF9800;
    --accent-purple: #7B1FA2;
    --gradient-start: #0D47A1;
    --gradient-mid: #1E88E5;
    --gradient-end: #43A047;
    --text-light: #E0E0E0;
    --text-dark: #212121;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.3);
  }

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

  body {
    font-family: 'Open Sans', sans-serif;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), 
                url('https://images.gptkong.com/demo/sample3.png') no-repeat center 20%/cover;
    background-blend-mode: overlay;
    line-height: 1.6;
    min-height: 100%;
    padding-top: 80px;
    position: relative;
    overflow-x: hidden;
  }

  body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 30%, rgba(123, 31, 162, 0.3) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(255, 152, 0, 0.3) 0%, transparent 40%);
    z-index: -1;
  }

  .design-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 10px 15px;
    font-size: 14px;
    color: white;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 152, 0, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(255, 152, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 152, 0, 0); }
  }

  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13, 71, 161, 0.9);
    display: flex;
    justify-content: center;
    padding: 15px 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
  }

  .nav-container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .nav-logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  }

  .nav-logo span {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    font-size: 20px;
    background: linear-gradient(to right, #FF9800, #7B1FA2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .nav-links {
    display: flex;
    gap: 30px;
  }

  .nav-links a {
    color: white;
    text-decoration: none;
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
    padding: 5px 0;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    bottom: 0;
    left: 0;
    transition: width 0.3s ease;
  }

  .nav-links a:hover {
    color: var(--accent-orange);
  }

  .nav-links a:hover::after {
    width: 100%;
  }

  .main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
  }

  .hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 152, 0, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
    z-index: -1;
  }

  @keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }

  .hero h1 {
    font-family: 'Roboto', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(to right, #FFFFFF, #E0E0E0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  }

  .hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin-bottom: 30px;
  }

  .hero-image {
    width: 300px;
    height: 300px;
    border-radius: 20px;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    margin-top: 30px;
    transition: transform 0.5s ease;
  }

  .hero-image:hover {
    transform: scale(1.05) rotate(5deg);
  }

  article {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 60px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  article h2 {
    font-family: 'Roboto', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: white;
    position: relative;
    padding-bottom: 15px;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 4px;
    background: linear-gradient(to right, var(--accent-orange), var(--accent-purple));
    border-radius: 2px;
  }

  article h3 {
    font-family: 'Roboto', sans-serif;
    font-size: 1.8rem;
    margin: 40px 0 20px;
    color: white;
  }

  article p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    line-height: 1.8;
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow-x: auto;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
    position: relative;
  }

  pre::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.1), rgba(123, 31, 162, 0.1));
    border-radius: 10px;
    pointer-events: none;
  }

  code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #E0E0E0;
  }

  .language-css {
    color: #64B5F6;
  }

  .feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin: 60px 0;
  }

  .feature-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
  }

  .feature-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.5s ease;
    pointer-events: none;
  }

  .feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  }

  .feature-card:hover::after {
    left: 100%;
  }

  .feature-card h3 {
    font-family: 'Roboto', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: white;
  }

  .feature-card ul {
    margin-left: 20px;
    margin-bottom: 20px;
  }

  .feature-card li {
    margin-bottom: 8px;
  }

  .example-data {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 15px;
    margin-top: 15px;
  }

  .example-data-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
  }

  .example-data-item:last-child {
    border-bottom: none;
  }

  .gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 60px 0;
  }

  .gallery-item {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
  }

  .gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

  .gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
  }

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

  .gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 15px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    font-family: 'Roboto', sans-serif;
    transform: translateY(100%);
    transition: transform 0.3s ease;
  }

  .gallery-item:hover .gallery-caption {
    transform: translateY(0);
  }

  footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
    background: rgba(13, 71, 161, 0.2);
    backdrop-filter: blur(5px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
  }

  .footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .footer-links a:hover {
    color: var(--accent-orange);
  }

  @media (max-width: 768px) {
    .nav-container {
      flex-direction: column;
      gap: 15px;
    }

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

    .hero h1 {
      font-size: 2.5rem;
    }

    article {
      padding: 30px 20px;
    }

    article h2 {
      font-size: 2rem;
    }

    article h3 {
      font-size: 1.5rem;
    }

    .feature-grid {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 480px) {
    .hero h1 {
      font-size: 2rem;
    }

    article {
      padding: 20px 15px;
    }

    article h2 {
      font-size: 1.8rem;
    }

    pre {
      padding: 15px;
    }

    .gallery {
      grid-template-columns: 1fr;
    }
  }