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

  :root {
    --black: #040A12;
    --white: #F0F8FF;
    --cyan: #00D4FF;
    --cyan-dim: rgba(0,212,255,0.15);
    --cyan-glow: rgba(0,212,255,0.08);
    --muted: rgba(176,215,255,0.55);
    --border: rgba(0,212,255,0.18);
    --font: 'Tw Cen MT', 'Century Gothic', 'Futura', sans-serif;
  }

  body {
    background: var(--black);
    color: var(--white);
    font-family: var(--font);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
  }

  .gate-logo { height: 60px; margin-bottom: 2rem; }

  .gate-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
  }

  .gate-sub {
    font-size: 0.88rem;
    color: var(--muted);
    margin-bottom: 2rem;
  }

  .gate-form {
    display: flex;
    gap: 0.75rem;
    align-items: center;
  }

  .gate-input {
    padding: 0.75rem 1.25rem;
    background: var(--cyan-glow);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--white);
    font-family: var(--font);
    font-size: 0.9rem;
    width: 240px;
    outline: none;
    transition: border-color 0.2s;
  }

  .gate-input:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 12px rgba(0,212,255,0.15);
  }

  .gate-input::placeholder { color: rgba(176,215,255,0.35); }

  .gate-btn {
    padding: 0.75rem 1.5rem;
    background: var(--cyan);
    color: var(--black);
    font-family: var(--font);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    transition: opacity 0.2s, box-shadow 0.2s;
  }

  .gate-btn:hover {
    opacity: 0.9;
    box-shadow: 0 0 20px rgba(0,212,255,0.3);
  }

  .gate-error {
    color: #FF5050;
    font-size: 0.8rem;
    margin-top: 1rem;
    min-height: 1rem;
    visibility: hidden;
  }

  .gate-error.visible { visibility: visible; }

  .gate-footer {
    position: absolute;
    bottom: 2rem;
    font-size: 0.7rem;
    color: rgba(176,215,255,0.2);
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }