:root {
    --primary-dark: #0A1F44;
    --primary-light: #013220;
    --accent-orange: #FFA500;
    --accent-red: #FF4500;
    --card-bg: #1E2A38;
    --text-light: #FFFFFF;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  }

  @font-face {
    font-family: 'Roboto';
    src: local('Roboto'), url(https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxK.woff2) format('woff2');
    font-display: swap;
  }

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

  body {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: var(--text-light);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    padding-top: 80px;
    min-height: 100%;
  }

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

  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(1, 42, 54, 0.95);
    padding: 15px 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
  }

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

  .logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(45deg, var(--accent-orange), var(--accent-red));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-decoration: none;
  }

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

  .nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s;
  }

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

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

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

  .hero {
    padding: 80px 0;
    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 70% 30%, rgba(255,165,0,0.1) 0%, transparent 70%);
    z-index: -1;
  }

  .hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--text-light), #CCCCCC);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero-subtitle {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 40px;
    opacity: 0.9;
  }

  .notice {
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 40px auto;
    max-width: 800px;
    text-align: center;
    border-left: 4px solid var(--accent-orange);
  }

  .content-section {
    padding: 60px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .section-title {
    font-size: 32px;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
  }

  .section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent-orange);
  }

  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
  }

  .card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-red));
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  }

  .card-title {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--accent-orange);
  }

  .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;
  }

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

  .code-block {
    background: #0F1923;
    border-radius: 8px;
    padding: 20px;
    margin: 30px 0;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    position: relative;
    border-left: 4px solid var(--accent-orange);
  }

  .code-block::before {
    content: 'CSS';
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-orange);
    color: #000;
    padding: 3px 10px;
    font-size: 12px;
    border-bottom-left-radius: 4px;
  }

  .footer {
    background: rgba(1, 42, 54, 0.9);
    padding: 40px 0;
    text-align: center;
    margin-top: 60px;
  }

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

  @media (max-width: 768px) {
    .hero-title {
      font-size: 36px;
    }
    .nav {
      display: none;
    }
    .grid {
      grid-template-columns: 1fr;
    }
  }

  /* Animations */
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

  .floating {
    animation: float 3s ease-in-out infinite;
  }

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
  }

  .pulse {
    animation: pulse 2s ease-in-out infinite;
  }