* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  }

  body {
    height: 100vh;
    color: #f1f5f9;
    overflow: hidden;
  }

  /* VIDEO DE FUNDO */
  #bg-video {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -1;
    object-fit: cover;
    filter: brightness(0.45) blur(1px);
  }

  .overlay {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* text-align: center; */
    padding: 20px;
    backdrop-filter: blur(2px);
  }

  h1 {
    font-size: 2.6rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
  }

  p {
    max-width: 750px;
    font-size: 1.13rem; /* aumentei a legibilidade */
    line-height: 1.7;
    opacity: 0.92;
    margin-bottom: 26px;
    text-shadow: 0 1px 12px rgba(0, 0, 0, 0.65);
  }

  p strong {
    color: #ffffff;
    font-weight: 700;
    text-shadow: 0 0 12px rgba(255,255,255,0.35);
  }

  .btn {
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    background: rgba(255,255,255,0.85);
    color: #0f172a;
    text-decoration: none;
    transition: 0.2s ease;
    backdrop-filter: blur(3px);
  }

  .btn:hover {
    background: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.35);
  }

  footer {
    margin-top: 28px;
    text-align: center;
    font-size: 0.95rem;
    opacity: 0.80;
    text-shadow: 0 2px 10px rgba(0,0,0,0.7);
  }

  .card {
    background: rgba(255, 255, 255, 0.12);
    padding: 35px 45px;
    max-width: 1000px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.45);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.15);
    animation: fadeIn 0.9s ease forwards;
    font-size: 1.20rem;
    line-height: 1.7;
    text-align: left;
    text-align: justify;
  }

  .card h1 {
    margin-bottom: 25px;
  }

  .card p {
    margin-bottom: 18px;
    font-size: 1.2rem;
    max-width: 100%;
  }

  .card p:first-of-type {
    padding-top: 8px;
  }

  .card .nota {
    background: rgba(255,255,255,0.15);
    padding: 10px 14px;
    border-radius: 6px;
    margin-top: 25px;
    font-size: 0.95rem;
  }

  /* bloco texto + logo YouTube lado a lado */
  .yt-row {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    background: rgba(255,255,255,0.12);
    padding: 10px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: 0 4px 15px rgba(0,0,0,0.35);
  }

  .yt-row span {
    font-size: 1rem;
    opacity: 0.95;
  }

  .yt-inline-logo {
    width: 110px;
    opacity: 0.9;
    transition: 0.2s ease;
    filter: drop-shadow(0 0 8px rgba(0,0,0,0.6));
    cursor: pointer;
  }

  .yt-inline-logo:hover {
    opacity: 1;
    transform: scale(1.06);
  }

  /* animação suave ao entrar */
  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }