:root {
    --primary: #0f2027;
    --secondary: #203a43;
    --accent: #2c5364;
    --neon-cyan: #00c9ff;
    --neon-pink: #ff6ec4;
    --neon-green: #92fe9d;
    --text-light: rgba(255,255,255,0.9);
    --text-muted: rgba(255,255,255,0.6);
  }

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

  @font-face {
    font-family: 'Montserrat';
    src: url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600;700&display=swap');
  }

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    color: var(--text-light);
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    padding-top: 80px;
    min-height: 100%;
  }

  .design-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0,0,0,0.7);
    padding: 10px 15px;
    border-radius: 20px;
    font-size: 12px;
    z-index: 1000;
    backdrop-filter: blur(5px);
    border: 1px solid var(--neon-cyan);
  }

  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
    z-index: 1000;
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
  }

  .nav-logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(45deg, var(--neon-cyan), var(--neon-green));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

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

  .nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
  }

  .nav-link:hover {
    color: var(--neon-cyan);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--neon-cyan);
    transition: width 0.3s ease;
  }

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

  .hero {
    min-height: 500px;
    display: flex;
    align-items: center;
    padding: 0 10%;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0,201,255,0.1) 0%, transparent 70%);
    animation: pulse 15s infinite alternate;
  }

  @keyframes pulse {
    0% { transform: translate(0,0); }
    50% { transform: translate(50px,50px); }
    100% { transform: translate(0,0); }
  }

  .hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
  }

  .hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--neon-cyan), var(--neon-pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 30px;
  }

  .hero-image {
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
    width: 400px;
    height: 400px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    object-fit: cover;
    border: 2px solid var(--neon-cyan);
    transition: all 0.5s ease;
  }

  .hero-image:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 30px 60px rgba(0,201,255,0.3);
  }

  .content-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
  }

  article {
    background: rgba(20, 29, 53, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    margin-bottom: 60px;
    border: 1px solid rgba(0,201,255,0.2);
  }

  article h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--neon-cyan);
    position: relative;
    padding-bottom: 15px;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--neon-cyan), transparent);
  }

  article h3 {
    font-size: 24px;
    margin: 30px 0 20px;
    color: var(--neon-green);
  }

  article p {
    font-size: 17px;
    margin-bottom: 20px;
    color: var(--text-light);
  }

  article color {
    color: var(--neon-cyan);
    font-weight: 600;
  }

  article span {
    color: var(--neon-pink);
    font-weight: 600;
  }

  pre {
    background: rgba(0,0,0,0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 25px 0;
    overflow-x: auto;
    border-left: 4px solid var(--neon-cyan);
    position: relative;
  }

  pre::before {
    content: 'CSS';
    position: absolute;
    top: 0;
    right: 0;
    background: var(--neon-cyan);
    color: black;
    padding: 2px 10px;
    font-size: 12px;
    border-bottom-left-radius: 5px;
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--neon-green);
    font-size: 15px;
    white-space: pre-wrap;
  }

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

  .gallery-item {
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    height: 300px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  }

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

  .gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,201,255,0.2);
  }

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

  .gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(transparent 60%, rgba(0,0,0,0.7));
  }

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

  .feature-card {
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,201,255,0.1);
    position: relative;
    overflow: hidden;
  }

  .feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,201,255,0.1);
    background: rgba(255,255,255,0.08);
  }

  .feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0,201,255,0.05) 0%, transparent 70%);
    z-index: -1;
  }

  .feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
    color: var(--neon-cyan);
  }

  .feature-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--neon-green);
  }

  .feature-desc {
    color: var(--text-muted);
    font-size: 15px;
  }

  footer {
    background: rgba(0,0,0,0.3);
    padding: 30px 0;
    text-align: center;
    margin-top: 60px;
    border-top: 1px solid rgba(0,201,255,0.2);
  }

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

  .footer-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .footer-link:hover {
    color: var(--neon-cyan);
  }

  .copyright {
    color: var(--text-muted);
    font-size: 14px;
  }

  @media (max-width: 1024px) {
    .hero {
      flex-direction: column;
      text-align: center;
      padding: 60px 5%;
    }

    .hero-content {
      max-width: 100%;
      margin-bottom: 40px;
    }

    .hero-image {
      position: relative;
      right: auto;
      top: auto;
      transform: none;
      width: 100%;
      max-width: 400px;
      margin: 0 auto;
    }
  }

  @media (max-width: 768px) {
    .nav-menu {
      display: none;
    }

    .hero-title {
      font-size: 36px;
    }

    article {
      padding: 30px 20px;
    }

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

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

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

  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
  }

  .floating {
    animation: float 6s ease-in-out infinite;
  }