:root {
    --primary-color: #6a11cb;
    --secondary-color: #2575fc;
    --accent-color: #ff6f61;
    --text-color: #ffffff;
    --bg-dark: #2c3e50;
    --bg-light: rgba(255, 255, 255, 0.1);
    --font-main: 'Roboto', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
  }

  @import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@500;700&family=Roboto:wght@300;400;500&display=swap');

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

  body {
    font-family: var(--font-main);
    color: var(--text-color);
    background: var(--bg-dark);
    line-height: 1.6;
    overflow-x: hidden;
  }

  .design-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0,0,0,0.7);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 14px;
    z-index: 1000;
    backdrop-filter: blur(5px);
  }

  .hero {
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 0 5%;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, var(--primary-color), var(--bg-dark));
    z-index: -2;
  }

  .hero-content {
    max-width: 1200px;
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
  }

  .hero h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #ffffff, #c2e9fb);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
  }

  .hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    color: rgba(255,255,255,0.8);
  }

  .hero-image {
    width: 320px;
    height: 320px;
    border-radius: 20px;
    margin: 30px auto;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    transition: transform 0.5s ease;
    background: url('https://images.gptkong.com/demo/sample1.png') center/cover;
  }

  .hero-image:hover {
    transform: scale(1.05) rotate(2deg);
  }

  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(42, 39, 61, 0.8);
    backdrop-filter: blur(10px);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  }

  .navbar-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(to right, #a1c4fd, #c2e9fb);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

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

  .nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    padding: 5px 0;
  }

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

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

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

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 5%;
  }

  article {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: 50px;
  }

  article h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: #ffffff;
    position: relative;
    padding-bottom: 15px;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
  }

  article h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin: 2.5rem 0 1.5rem;
    color: #ffffff;
  }

  article p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    border-left: 4px solid var(--accent-color);
  }

  code {
    font-family: 'Courier New', monospace;
    color: #f8f8f2;
    font-size: 0.9rem;
  }

  .code-block {
    position: relative;
  }

  .code-block::before {
    content: 'CSS';
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--accent-color);
    color: white;
    padding: 2px 10px;
    border-radius: 5px;
    font-size: 0.8rem;
    font-weight: bold;
  }

  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin: 50px 0;
  }

  .gallery-item {
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
  }

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

  .gallery-item:hover {
    transform: translateY(-10px);
  }

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

  .cta-section {
    text-align: center;
    padding: 80px 5%;
    background: linear-gradient(135deg, rgba(106, 17, 203, 0.8), rgba(37, 117, 252, 0.8));
    border-radius: 20px;
    margin: 50px 0;
  }

  .cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
  }

  .cta-button {
    display: inline-block;
    background: linear-gradient(45deg, var(--accent-color), #ff9472);
    border: none;
    border-radius: 30px;
    padding: 15px 40px;
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(255, 111, 97, 0.4);
  }

  .cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(255, 111, 97, 0.6);
  }

  footer {
    background: rgba(0, 0, 0, 0.3);
    padding: 30px 5%;
    text-align: center;
    margin-top: 50px;
    backdrop-filter: blur(5px);
  }

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
  }

  .footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
  }

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

  .copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
  }

  @media (max-width: 768px) {
    .hero h1 {
      font-size: 2.5rem;
    }

    .hero p {
      font-size: 1rem;
    }

    .nav-links {
      gap: 15px;
    }

    article {
      padding: 30px;
    }

    article h2 {
      font-size: 1.8rem;
    }

    article h3 {
      font-size: 1.5rem;
    }

    .image-gallery {
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
  }

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

    .navbar {
      flex-direction: column;
      padding: 15px;
    }

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

    article {
      padding: 20px;
    }

    .cta-section h2 {
      font-size: 2rem;
    }
  }

  /* Animations */
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .fade-in {
    opacity: 0;
    animation: fadeInUp 1s forwards;
  }

  .delay-1 {
    animation-delay: 0.2s;
  }

  .delay-2 {
    animation-delay: 0.4s;
  }

  .delay-3 {
    animation-delay: 0.6s;
  }

  /* Smooth scrolling */
  html {
    scroll-behavior: smooth;
  }