body {
      font-family: "Poppins", sans-serif;
      background-color: #0a0a0a;
      color: #e0e0e0;
      scroll-behavior: smooth;
      overflow-x: hidden;
    }
    header {
      background-color: transparent;
      transition: background-color 0.3s ease, box-shadow 0.3s ease;
      position: fixed;
      width: 100%;
      top: 0;
      left: 0;
      z-index: 50;
      padding: 1rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    header.scrolled {
      background-color: #111111cc;
      box-shadow: 0 4px 15px #ff2e63aa;
      backdrop-filter: saturate(180%) blur(12px);
    }
    nav a {
      position: relative;
      color: #bbb;
      font-weight: 600;
      margin-left: 2rem;
      text-decoration: none;
      transition: color 0.3s ease;
      user-select: none;
    }
    nav a::after {
      content: "";
      position: absolute;
      width: 100%;
      height: 2px;
      background: #ff2e63;
      bottom: -4px;
      left: -100%;
      transition: left 0.3s ease;
    }
    nav a:hover,
    nav a.active {
      color: #ff2e63;
    }
    nav a:hover::after,
    nav a.active::after {
      left: 0;
    }
    #mobileMenu {
      background: #111111ee;
      position: fixed;
      top: 4rem;
      left: 0;
      width: 100%;
      padding: 1.5rem 2rem;
      display: none;
      flex-direction: column;
      gap: 1.5rem;
      z-index: 45;
      overflow: hidden;
      max-height: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      border-bottom-left-radius: 1rem;
      border-bottom-right-radius: 1rem;
    }
    #mobileMenu.show {
      display: flex;
      max-height: 500px;
    }
    #mobileMenu a {
      color: #ff2e63;
      font-weight: 700;
      font-size: 1.25rem;
      text-decoration: none;
      user-select: none;
    }
    .hero-title {
      font-size: 3.5rem;
      font-weight: 800;
      background: linear-gradient(90deg, #ff2e63, #ff7c7c);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 1rem;
      user-select: none;
    }
    .hero-subtitle {
      color: #bbb;
      font-size: 1.25rem;
      max-width: 28rem;
      margin: 0 auto 3rem auto;
      user-select: none;
    }
    .hero-image {
      max-width: 100%;
      max-height: 400px;
      border-radius: 1.5rem;
      box-shadow: 0 0 30px #ff2e63aa;
      animation: float 6s ease-in-out infinite;
      user-select: none;
    }
    @keyframes float {
      0%,
      100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(-15px);
      }
    }
    .btn-primary {
      background-color: #ff2e63;
      color: #111;
      font-weight: 700;
      padding: 0.75rem 2.5rem;
      border-radius: 9999px;
      box-shadow: 0 6px 15px #ff2e63aa;
      transition: background-color 0.3s ease, transform 0.3s ease;
      user-select: none;
      display: inline-flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.125rem;
      text-decoration: none;
    }
    .btn-primary:hover {
      background-color: #ff4a7a;
      transform: scale(1.05);
    }
    main {
      padding-top: 6rem;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    footer {
      text-align: center;
      padding: 2rem 1rem;
      color: #555;
      user-select: none;
      font-size: 0.875rem;
    }
    @media (min-width: 768px) {
      .hero-title {
        font-size: 4.5rem;
      }
      .hero-subtitle {
        font-size: 1.5rem;
      }
    }