:root {
    --primary: #2B6CB0;
    --secondary: #5F4BB6;
    --accent: #FFC107;
    --bg-light: #FAFAFA;
    --bg-dark: #333333;
    --text-light: #333333;
    --text-dark: #FAFAFA;
    --white: #FFFFFF;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, var(--bg-light), var(--white));
    color: var(--text-light);
    line-height: 1.6;
    padding: 0;
    overflow-x: hidden;
  }

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

  header {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
    padding: 15px 0;
  }

  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
  }

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

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

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

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

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

  .hero {
    min-height: 500px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 60px;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(43,108,176,0.1) 0%, rgba(255,255,255,0) 70%);
    animation: rotate 20s linear infinite;
    z-index: -1;
  }

  @keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }

  .hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }

  .hero-text {
    max-width: 600px;
  }

  .hero-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary);
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: 1.2rem;
    color: var(--secondary);
    margin-bottom: 30px;
  }

  .hero-image {
    position: relative;
    height: 400px;
  }

  .hero-img {
    position: absolute;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
  }

  .hero-img:nth-child(1) {
    width: 60%;
    top: 0;
    left: 0;
    z-index: 3;
  }

  .hero-img:nth-child(2) {
    width: 50%;
    top: 20%;
    right: 0;
    z-index: 2;
    transform: rotate(5deg);
  }

  .hero-img:nth-child(3) {
    width: 45%;
    bottom: 0;
    left: 25%;
    z-index: 1;
    transform: rotate(-3deg);
  }

  .hero-img:hover {
    transform: scale(1.05) rotate(0deg);
    z-index: 4;
  }

  .notice {
    background: var(--accent);
    color: var(--white);
    padding: 15px;
    border-radius: var(--radius);
    text-align: center;
    margin: 30px 0;
    font-weight: 500;
    box-shadow: var(--shadow);
  }

  article {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 60px;
    box-shadow: var(--shadow);
  }

  article h2 {
    color: var(--primary);
    font-size: 1.8rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
  }

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

  article h3 {
    color: var(--secondary);
    font-size: 1.4rem;
    margin: 30px 0 15px;
  }

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

  pre {
    background: #f8f8f8;
    border-radius: var(--radius);
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 4px solid var(--accent);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
  }

  code {
    font-family: 'Courier New', monospace;
    background: rgba(255,193,7,0.1);
    padding: 2px 5px;
    border-radius: 3px;
    color: var(--secondary);
  }

  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    transition: var(--transition);
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
  }

  .card:hover::before {
    width: 8px;
  }

  .card-title {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.3rem;
  }

  .card-content {
    color: var(--text-light);
  }

  .card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: var(--transition);
  }

  .card:hover .card-img {
    transform: scale(1.03);
  }

  .features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
  }

  .feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--white);
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(43,108,176,0.3);
  }

  .feature-content h4 {
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.2rem;
  }

  .feature-content p {
    color: var(--text-light);
  }

  footer {
    background: var(--primary);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
  }

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

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
  }

  .footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
  }

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

  .copyright {
    margin-top: 30px;
    opacity: 0.8;
    font-size: 0.9rem;
  }

  @media (max-width: 992px) {
    .hero-content {
      grid-template-columns: 1fr;
    }

    .hero-text {
      order: 1;
      text-align: center;
      max-width: 100%;
    }

    .hero-image {
      order: 2;
      height: 300px;
      margin-top: 30px;
    }
  }

  @media (max-width: 768px) {
    .nav-links {
      gap: 15px;
    }

    .hero-title {
      font-size: 2rem;
    }

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

    article {
      padding: 30px 20px;
    }

    article h2 {
      font-size: 1.5rem;
    }

    article h3 {
      font-size: 1.2rem;
    }
  }

  @media (max-width: 576px) {
    .header-content {
      flex-direction: column;
      gap: 15px;
    }

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

    .hero-title {
      font-size: 1.8rem;
    }

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