:root {
    --primary: #0f2027;
    --secondary: #203a43;
    --accent: #00ffff;
    --highlight: #ff8c00;
    --text: #ffffff;
    --card-bg: #2c3e50;
    --card-border: #34495e;
    --transition: all 0.3s ease;
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, var(--primary), var(--secondary), #2c5364);
    color: var(--text);
    line-height: 1.6;
    letter-spacing: 0.5px;
    min-height: 100%;
    padding-top: 80px;
  }

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

  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  }

  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
  }

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

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

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

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

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

  .hero {
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,255,255,0.1) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
  }

  .hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero-subtitle {
    font-size: 20px;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
  }

  .hero-image {
    width: 320px;
    height: 320px;
    margin: 0 auto;
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    transition: var(--transition);
  }

  .hero-image:hover {
    transform: translateY(-10px) rotate(5deg);
    box-shadow: 0 25px 40px rgba(0,0,0,0.4);
  }

  .section {
    padding: 80px 0;
    position: relative;
  }

  .section-title {
    font-size: 36px;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
  }

  .section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
  }

  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
  }

  .card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--accent), var(--highlight));
  }

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

  .card-title {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--accent);
  }

  .card-content {
    margin-bottom: 20px;
  }

  .card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  }

  .code-block {
    background: rgba(0,0,0,0.3);
    border-left: 4px solid var(--accent);
    padding: 20px;
    border-radius: 0 8px 8px 0;
    margin: 30px 0;
    overflow-x: auto;
  }

  .code-block pre {
    margin: 0;
    font-family: 'Courier New', monospace;
    white-space: pre-wrap;
  }

  .code-block code {
    color: var(--accent);
  }

  .footer {
    background: rgba(0,0,0,0.8);
    padding: 40px 0;
    text-align: center;
    margin-top: 80px;
  }

  .footer-text {
    opacity: 0.7;
    font-size: 14px;
  }

  .notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--highlight);
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    z-index: 1000;
  }

  @media (max-width: 768px) {
    .hero-title {
      font-size: 36px;
    }
    
    .hero-subtitle {
      font-size: 18px;
    }
    
    .grid {
      grid-template-columns: 1fr;
    }
    
    .nav {
      gap: 15px;
    }
  }

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

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

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
  }

  .pulse {
    animation: pulse 2s ease-in-out infinite;
  }