:root {
    --primary: #002f6c;
    --secondary: #f0f0f0;
    --accent: #ff6600;
    --text: #333333;
    --light: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  }

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

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

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

  /* Header */
  .hero {
    height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 80px;
  }

  .hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
      rgba(0, 47, 108, 0.8) 0%, 
      rgba(255, 102, 0, 0.6) 100%);
    z-index: -1;
  }

  .hero-content {
    max-width: 600px;
    color: var(--light);
    padding: 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transform: translateY(20px);
    opacity: 0;
    animation: fadeIn 1s ease forwards 0.5s;
  }

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

  .hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
  }

  .hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
  }

  /* Navigation */
  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--primary);
    padding: 20px 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  }

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

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

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

  .nav-links a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: all 0.3s ease;
  }

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

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

  /* Main Content */
  article {
    background: var(--light);
    border-radius: 16px;
    padding: 60px;
    margin: 100px 0;
    box-shadow: var(--shadow);
  }

  article h2 {
    color: var(--primary);
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
  }

  article h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
  }

  article h3 {
    color: var(--primary);
    font-size: 1.8rem;
    margin: 40px 0 20px;
  }

  article p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text);
  }

  /* Code Blocks */
  pre {
    background: #f8f8f8;
    border-radius: 8px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--accent);
  }

  code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #333;
  }

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

  .gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
  }

  .gallery-item:hover {
    transform: translateY(-10px);
  }

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

  .gallery-item:hover img {
    transform: scale(1.05);
  }

  /* Accordion */
  .accordion {
    margin: 40px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
  }

  .accordion-header {
    background: var(--primary);
    color: var(--light);
    padding: 20px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
  }

  .accordion-header:hover {
    background: #001f4a;
  }

  .accordion-content {
    background: var(--light);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
  }

  .accordion.active .accordion-content {
    max-height: 1000px;
    padding: 20px;
  }

  /* Footer */
  footer {
    background: var(--primary);
    color: var(--light);
    padding: 60px 0 30px;
    margin-top: 100px;
  }

  .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
  }

  .footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
  }

  .footer-column h3::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
  }

  .footer-column ul {
    list-style: none;
  }

  .footer-column ul li {
    margin-bottom: 10px;
  }

  .footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .footer-column a:hover {
    color: var(--light);
  }

  .copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
  }

  /* Responsive */
  @media (max-width: 992px) {
    .hero {
      height: auto;
      padding: 120px 0 80px;
    }

    .hero-content {
      max-width: 100%;
    }

    article {
      padding: 40px;
    }
  }

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

    article {
      padding: 30px;
    }

    article h2 {
      font-size: 2rem;
    }

    article h3 {
      font-size: 1.5rem;
    }
  }

  @media (max-width: 576px) {
    .hero h1 {
      font-size: 2.2rem;
    }

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

    article {
      padding: 20px;
      margin: 60px 0;
    }
  }

  /* Special Notice */
  .notice {
    background: var(--accent);
    color: var(--light);
    padding: 15px;
    text-align: center;
    font-size: 0.9rem;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
  }