:root {
    --primary-color: #1A2B4F;
    --accent-color: #00FFFF;
    --light-color: #E5E5E5;
    --dark-accent: #0F1A3A;
    --highlight: #6A00F4;
    --font-main: 'Orbitron', 'Helvetica Neue', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
  }

  @import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Roboto:wght@300;400;700&display=swap');

  body {
    margin: 0;
    padding: 0;
    font-family: var(--font-secondary);
    color: var(--light-color);
    background: linear-gradient(135deg, var(--primary-color), var(--dark-accent));
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  header {
    background: rgba(26, 43, 79, 0.8);
    backdrop-filter: blur(10px);
    padding: 30px 0;
    position: relative;
    z-index: 100;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.3);
  }

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

  .logo {
    font-family: var(--font-main);
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
    letter-spacing: 2px;
  }

  .reference-badge {
    background: var(--highlight);
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(106, 0, 244, 0.4);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(106, 0, 244, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(106, 0, 244, 0); }
    100% { box-shadow: 0 0 0 0 rgba(106, 0, 244, 0); }
  }

  nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
  }

  nav a {
    color: var(--light-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    position: relative;
    transition: all 0.3s ease;
  }

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

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

  nav a:hover::after {
    width: 100%;
  }

  .hero {
    height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 30%, rgba(0, 255, 255, 0.1) 0%, rgba(26, 43, 79, 0) 70%);
    z-index: -1;
  }

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

  h1 {
    font-family: var(--font-main);
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(to right, var(--accent-color), white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
  }

  .hero p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
  }

  .scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--light-color);
    font-size: 14px;
    animation: bounce 2s infinite;
  }

  @keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-20px) translateX(-50%); }
    60% { transform: translateY(-10px) translateX(-50%); }
  }

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

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

  .section-title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
  }

  .content-block {
    background: rgba(15, 26, 58, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 40px;
    margin-bottom: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .content-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  }

  h2, h3, h4 {
    font-family: var(--font-main);
    color: var(--accent-color);
    margin-top: 0;
  }

  h2 { font-size: 28px; }
  h3 { font-size: 24px; }
  h4 { font-size: 20px; }

  p {
    font-size: 17px;
    margin-bottom: 20px;
  }

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

  .image-card {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
  }

  .image-card:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 255, 255, 0.3);
  }

  .image-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
  }

  .image-card:hover img {
    transform: scale(1.1);
  }

  .image-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 255, 255, 0.1), rgba(26, 43, 79, 0.5));
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .image-card:hover::after {
    opacity: 1;
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 20px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 15px;
    line-height: 1.5;
    margin: 30px 0;
    border-left: 3px solid var(--accent-color);
    position: relative;
  }

  pre::before {
    content: 'CSS';
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-color);
    color: var(--primary-color);
    padding: 2px 10px;
    font-size: 12px;
    font-weight: bold;
    border-bottom-left-radius: 5px;
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--accent-color);
    background: rgba(0, 255, 255, 0.1);
    padding: 2px 5px;
    border-radius: 3px;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    background: rgba(15, 26, 58, 0.6);
    backdrop-filter: blur(5px);
    border-radius: 10px;
    overflow: hidden;
  }

  th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(0, 255, 255, 0.1);
  }

  th {
    background: rgba(0, 255, 255, 0.1);
    color: var(--accent-color);
    font-family: var(--font-main);
  }

  tr:hover {
    background: rgba(0, 255, 255, 0.05);
  }

  .stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
  }

  .star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    animation: twinkle 5s infinite ease-in-out;
  }

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

  footer {
    background: rgba(15, 26, 58, 0.8);
    padding: 50px 0;
    text-align: center;
    margin-top: 100px;
  }

  .footer-content {
    max-width: 800px;
    margin: 0 auto;
  }

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

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

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

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

  @media (max-width: 768px) {
    h1 { font-size: 36px; }
    .section-title { font-size: 28px; }
    .hero { height: 500px; }
    nav ul { gap: 15px; }
    .content-block { padding: 30px; }
    .image-grid { grid-template-columns: 1fr; }
  }

  @media (max-width: 480px) {
    h1 { font-size: 28px; }
    .section-title { font-size: 24px; }
    .hero { height: 400px; }
    .header-content { flex-direction: column; gap: 20px; }
    nav ul { flex-wrap: wrap; justify-content: center; }
    .content-block { padding: 20px; }
  }