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

    html, body {
      font-family: 'Poppins', sans-serif;
      background: #111;
      color: #fff;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }

    a {
      color: #66ffcc;
      text-decoration: none;
    }

    .container {
      width: 90%;
      max-width: 1200px;
      margin: auto;
      padding: 40px 0;
    }

    header {
      background: #1c1c1c;
      padding: 20px 0;
      position: sticky;
      top: 0;
      z-index: 999;
    }

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

    .logo {
      font-size: 1.8rem;
      font-weight: 600;
      color: #66ffcc;
    }

    nav ul {
        display: flex;
        list-style: none;
        gap: 20px;
        flex-wrap: wrap;
        padding: 0;
        margin: 30px 0 0 0;
        }

    nav a {
      font-weight: 500;
    }

    .hero {
      text-align: center;
      background: linear-gradient(to right, #222, #333);
      padding: 100px 20px;
      opacity: 0;
      transform: translateY(20px);
      animation: fadeInUp 1s forwards;
    }

    .hero h1 {
      font-size: 2.5rem;
      margin-bottom: 20px;
    }

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

    .btn-primary {
      background: #66ffcc;
      color: #000;
      padding: 15px 30px;
      border: none;
      border-radius: 8px;
      font-size: 1rem;
      cursor: pointer;
      transition: transform 0.2s ease, background 0.3s;
    }

    .btn-primary:hover {
      transform: scale(1.05);
      background: #55ddaa;
    }

    section {
      opacity: 0;
      transform: translateY(40px);
      transition: all 0.8s ease-out;
    }

    section.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .features .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
    }

    .card {
      background: #1f1f1f;
      border: 1px solid #333;
      padding: 30px;
      border-radius: 10px;
      transition: transform 0.3s ease;
    }

    .card:hover {
      transform: translateY(-5px);
    }

    .cta {
      background: #66ffcc;
      color: #000;
      text-align: center;
      padding: 60px 20px;
    }

    .cta .btn-primary {
      background: #000;
      color: #66ffcc;
    }

    footer {
      text-align: center;
      padding: 20px;
      font-size: 0.8rem;
      background: #111;
    }

    
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(40px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    
    .fade-out-all {
      animation: fadeOut 1s forwards;
    }

    @keyframes fadeOut {
      to {
        opacity: 0;
        transform: scale(1.1);
      }
    }

    .blue-overlay {
      position: fixed;
      top: 0;
      left: 0;
      height: 100%;
      width: 100%;
      background: #007BFF;
      z-index: 1000;
      animation: expandBlue 1s forwards;
    }

    @keyframes expandBlue {
      from {
        opacity: 0;
      }
      to {
        opacity: 1;
      }
    }

    
    @media (max-width: 768px) {

      .hero h1 {
        font-size: 2rem;
      }
      h1 { font-size: 2rem; } .header-container { flex-direction: column; align-items: flex-start; } nav ul { flex-direction: column; gap: 10px; }
    }