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

    body {
      font-family: 'Poppins', Arial, sans-serif;
      background: 
        linear-gradient(rgba(0, 20, 40, 0.75), rgba(0, 20, 40, 0.85)),
        url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1920&q=80')
        no-repeat center center/cover;
      color: #fff;
      height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      overflow-x: hidden;
      position: relative;
    }

    /* ---------- NAVIGATION ---------- */
    nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(0, 0, 0, 0.55);
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 1.2rem 0;
      z-index: 10;
      backdrop-filter: blur(6px);
    }

    nav ul {
      display: flex;
      list-style: none;
      gap: 2.5rem;
    }

    nav ul li {
      position: relative;
    }

    nav ul li a {
      color: #f0f0f0;
      text-decoration: none;
      font-weight: 400;
      letter-spacing: 1px;
      transition: color 0.3s ease;
    }

    nav ul li a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -6px;
      width: 0%;
      height: 2px;
      background-color: #00e5ff;
      transition: width 0.3s ease;
    }

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

    nav ul li a:hover {
      color: #00e5ff;
    }

    /* ---------- HERO SECTION ---------- */
    .hero {
      text-align: center;
      padding: 8rem 2rem 2rem;
      animation: fadeIn 1.6s ease forwards;
    }

    h1 {
      font-size: 3rem;
      background: linear-gradient(90deg, #00e5ff, #29b6f6, #00acc1);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 0.6em;
    }

    p {
      font-size: 1.2rem;
      max-width: 600px;
      margin: 0 auto 2em;
      color: #e0f7fa;
      line-height: 1.6;
    }

    a.button {
      display: inline-block;
      padding: 0.8em 1.8em;
      border-radius: 50px;
      border: 2px solid #00e5ff;
      color: #fff;
      text-decoration: none;
      font-weight: 600;
      transition: all 0.3s ease;
    }

    a.button:hover {
      background: #00e5ff;
      color: #002a3a;
    }

    footer {
      position: absolute;
      bottom: 15px;
      font-size: 0.9rem;
      color: #cfd8dc;
      opacity: 0.8;
    }

    /* ---------- Animations ---------- */
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* ---------- RESPONSIVE ---------- */
    @media (max-width: 768px) {
      nav ul {
        gap: 1.2rem;
      }
      h1 {
        font-size: 2.2rem;
      }
      p {
        font-size: 1rem;
      }
    }