* {
      box-sizing: border-box;
    }

    html,
    body {
      margin: 0;
      width: 100%;
      height: 100%;
    }

    body {
      display: flex;
      align-items: center;
      justify-content: center;
      background:
        radial-gradient(
          circle at 72% 48%,
          rgba(210, 210, 214, 0.55),
          transparent 34%
        ),
        linear-gradient(
          135deg,
          #ffffff 0%,
          #f4f4f6 100%
        );
      color: #111111;
      font-family: Arial, Helvetica, sans-serif;
      overflow: hidden;
      position: relative;
    }

    body::before {
      content: "";
      position: absolute;
      width: 58vw;
      height: 58vw;
      max-width: 760px;
      max-height: 760px;
      right: -18vw;
      top: 18%;
      border-radius: 48% 52% 42% 58%;
      background: rgba(185, 185, 190, 0.16);
      transform: rotate(-18deg);
    }

    .site-header {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 88px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 7vw;
      font-size: 11px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .social-icons a {
            font-size: 30px;
            color: #333;
            margin-right: 15px;
            text-decoration: none;
            transition: opacity 0.3s ease;
        }
        .social-icons a:hover {
            opacity: 0.7;
        }
    .logo {
      font-size: 13px;
      letter-spacing: 0.24em;
      font-weight: 600;
    }

    .nav {
      display: flex;
      gap: 32px;
    }

    .nav span {
      color: #555555;
    }

    h1 {
      margin: 0;
      font-size: clamp(2.8rem, 7vw, 5.8rem);
      font-weight: 300;
      letter-spacing: 0.08em;
      text-align: center;
      text-transform: uppercase;
    }

    main {
      position: relative;
      z-index: 1;
      width: min(90%, 900px);
      text-align: center;
    }

    .intro {
      margin: 18px auto 0;
      max-width: 440px;
      color: #666666;
      font-size: 12px;
      line-height: 1.7;
      letter-spacing: 0.04em;
    }

    .waitlist {
      margin-top: 26px;
      display: flex;
      gap: 0.5rem;
      justify-content: center;
    }

    input,
    button {
      font: inherit;
      height: 42px;
      padding: 0 16px;
      border: 1px solid #222222;
      border-radius: 0;
    }

    input {
      width: 240px;
      background: rgba(255, 255, 255, 0.75);
    }

    button {
      background: #111111;
      color: #ffffff;
      cursor: pointer;
      text-transform: uppercase;
      font-size: 10px;
      letter-spacing: 0.15em;
    }

    button:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }

    .message {
      margin-top: 1rem;
      font-size: 0.9rem;
    }

    .social {
      margin-top: 10px;
      color: #777777;
      font-size: 9px;
      letter-spacing: 0.12em;
    }

    .footer {
      position: absolute;
      bottom: 28px;
      left: 0;
      right: 0;
      text-align: center;
      color: #888888;
      font-size: 9px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
    }

    @media (max-width: 600px) {
      .site-header {
        padding: 0 24px;
      }

      .nav {
        gap: 16px;
      }

      h1 {
        font-size: clamp(2.2rem, 12vw, 4rem);
      }

      .waitlist {
        flex-direction: column;
        align-items: center;
      }

      input,
      button {
        width: min(100%, 320px);
      }
    }