:root {
    --primary: #0f2027;
    --secondary: #203a43;
    --accent: #2c5364;
    --highlight: #6a11cb;
    --text: #b0c4de;
    --light: #ffffff;
    --dark: #1e2a38;
    --shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  }

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  .header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(20, 29, 49, 0.9);
    padding: 1rem 2rem;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
  }

  .header:hover {
    background-color: rgba(20, 29, 49, 1);
  }

  .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--light);
    text-decoration: none;
  }

  .nav {
    display: flex;
    gap: 2rem;
  }

  .nav-link {
    color: var(--text);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
    position: relative;
  }

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

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

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

  .hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
  }

  .hero-content {
    max-width: 800px;
  }

  .hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--light);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  }

  .hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text);
  }

  .hero-image {
    width: 320px;
    height: 320px;
    border-radius: 50%;
    margin: 2rem auto;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
  }

  .hero-image:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  }

  .section {
    padding: 4rem 0;
  }

  .section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--light);
    text-align: center;
    position: relative;
  }

  .section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--highlight), var(--accent));
  }

  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
  }

  .card {
    background-color: var(--dark);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
  }

  .card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--light);
  }

  .card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
  }

  .article {
    background-color: rgba(30, 42, 56, 0.8);
    border-radius: 10px;
    padding: 3rem;
    margin: 3rem 0;
    box-shadow: var(--shadow);
  }

  .article h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--light);
  }

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

  .article p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    line-height: 1.7;
  }

  .article pre {
    background-color: #1c274c;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    overflow-x: auto;
  }

  .article code {
    font-family: 'Courier New', monospace;
    color: #9b59b6;
  }

  .footer {
    background-color: var(--dark);
    padding: 3rem 0;
    text-align: center;
  }

  .footer-text {
    font-size: 1rem;
    color: var(--text);
  }

  .notice {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 8px;
    margin: 2rem 0;
    text-align: center;
    font-size: 1rem;
    color: var(--light);
  }

  @media (max-width: 768px) {
    .hero-title {
      font-size: 2rem;
    }
    .hero-subtitle {
      font-size: 1.2rem;
    }
    .nav {
      gap: 1rem;
    }
    .article {
      padding: 2rem;
    }
  }

  @keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
  }

  .floating {
    animation: float 3s ease-in-out infinite;
  }