:root {
    --primary: linear-gradient(135deg, #1E3A8A, #0F172A);
    --secondary: #1F2937;
    --accent: linear-gradient(45deg, #FFA500, #FF8C00);
    --text: #FFFFFF;
    --highlight: #F97316;
    --card-bg: #374151;
    --footer-bg: #111827;
  }

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

  body {
    background: var(--primary);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
  }

  .header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(31, 41, 55, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  }

  .logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--accent);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

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

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

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

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

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

  .hero {
    min-height: 600px;
    padding: 150px 5% 100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(30, 58, 138, 0.3), transparent 70%);
    z-index: -1;
  }

  .hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(to right, #FFFFFF, #D1D5DB);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: fadeIn 1s ease;
  }

  .hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin-bottom: 40px;
    opacity: 0.9;
  }

  .notice {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 25px;
    border-radius: 8px;
    margin: 30px auto;
    max-width: 800px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 165, 0, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(255, 165, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 165, 0, 0); }
  }

  .btn {
    background: var(--accent);
    border: none;
    border-radius: 8px;
    padding: 12px 30px;
    color: var(--text);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 140, 0, 0.3);
  }

  .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 140, 0, 0.4);
  }

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

  section {
    padding: 100px 0;
    position: relative;
  }

  section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(30, 58, 138, 0.2), transparent 70%);
    z-index: -1;
  }

  h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50%;
    height: 4px;
    background: var(--highlight);
    border-radius: 2px;
  }

  h3 {
    font-size: 1.8rem;
    margin: 30px 0 20px;
    color: #D1D5DB;
  }

  p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.7;
  }

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

  .card {
    background: var(--secondary);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--highlight);
    transition: width 0.3s ease;
  }

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

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

  .card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
  }

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

  pre {
    background: #1F2937;
    border-radius: 8px;
    padding: 20px;
    margin: 30px 0;
    overflow-x: auto;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.3);
    border-left: 4px solid var(--highlight);
  }

  code {
    font-family: 'Courier New', monospace;
    color: #F97316;
    background: transparent;
  }

  .footer {
    background: var(--footer-bg);
    padding: 50px 5%;
    text-align: center;
  }

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

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

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

  .copyright {
    opacity: 0.7;
    font-size: 0.9rem;
  }

  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @media (max-width: 768px) {
    .hero h1 {
      font-size: 2.5rem;
    }
    
    .nav-links {
      gap: 15px;
    }
    
    .grid {
      grid-template-columns: 1fr;
    }
  }