:root {
    --primary: #0F4C81;
    --secondary: linear-gradient(45deg, #FFA726, #EF5350);
    --accent: #7C4DFF;
    --text: #333;
    --light: #f8f9fa;
    --dark: #212121;
    --radius: 12px;
    --shadow: 0 8px 30px rgba(0,0,0,0.12);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.8;
    color: var(--text);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    overflow-x: hidden;
  }

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

  /* Header */
  .header {
    background: rgba(15, 76, 129, 0.9);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  }

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

  .logo {
    font-size: 24px;
    font-weight: 700;
    color: white;
    text-decoration: none;
    letter-spacing: 1px;
  }

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

  .nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: var(--transition);
  }

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

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

  /* Hero */
  .hero {
    padding: 180px 0 100px;
    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(239, 83, 80, 0.1) 0%, transparent 70%);
    z-index: -1;
    animation: pulse 15s infinite alternate;
  }

  @keyframes pulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.2); }
  }

  .hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--primary), #EF5350);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: 20px;
    color: var(--dark);
    max-width: 700px;
    margin: 0 auto 40px;
  }

  .hero-banner {
    margin-top: 60px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
  }

  .hero-banner img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
  }

  .hero-banner:hover img {
    transform: scale(1.02);
  }

  /* Main Content */
  .main {
    padding: 80px 0;
  }

  .section {
    margin-bottom: 100px;
  }

  .section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
  }

  .section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--secondary);
    border-radius: 2px;
  }

  .card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px;
    margin-bottom: 30px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

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

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
  }

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

  .card-title {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--primary);
  }

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

  .feature-card {
    background: white;
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
  }

  .feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
  }

  .feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
    box-shadow: 0 10px 20px rgba(255, 167, 38, 0.3);
  }

  /* Code Blocks */
  pre {
    background: #282c34;
    border-radius: var(--radius);
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
    position: relative;
  }

  pre::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius) var(--radius) 0 0;
  }

  code {
    font-family: 'Fira Code', monospace;
    color: #abb2bf;
    font-size: 14px;
    line-height: 1.6;
  }

  /* Images */
  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .image-card {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
  }

  .image-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
  }

  .image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
  }

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

  /* Footer */
  .footer {
    background: var(--dark);
    color: white;
    padding: 60px 0 20px;
    text-align: center;
  }

  .footer-logo {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    display: inline-block;
  }

  .footer-text {
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.8;
  }

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
  }

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

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

  .copyright {
    opacity: 0.6;
    font-size: 14px;
  }

  /* Responsive */
  @media (max-width: 768px) {
    .hero-title {
      font-size: 36px;
    }
    
    .hero-subtitle {
      font-size: 18px;
    }
    
    .nav {
      gap: 15px;
    }
    
    .grid {
      grid-template-columns: 1fr;
    }
  }

  /* Notification */
  .notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: white;
    padding: 15px 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
  }

  .notification.show {
    transform: translateY(0);
    opacity: 1;
  }

  .notification-icon {
    width: 24px;
    height: 24px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
  }