body {
  min-height: 100vh;
  background:
    radial-gradient(700px 500px at 15% 10%, rgba(124, 108, 255, .22), transparent 65%),
    radial-gradient(600px 400px at 90% 90%, rgba(34, 211, 238, .14), transparent 60%),
    var(--bg);
}
.pagina { min-height: 100vh; display: grid; place-content: center; justify-items: center; gap: 26px; padding: 32px 16px; }
.assinatura {
  width: min(480px, calc(100vw - 32px)); padding: 32px 28px; border-radius: 20px;
  background: var(--surface); border: 1px solid var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 30px 80px rgba(124, 108, 255, .22);
}
.selo-plano {
  display: inline-block; padding: 5px 14px; border-radius: 999px; background: var(--gradient);
  color: #fff; font-size: .8rem; font-weight: 700; letter-spacing: .02em;
}
.assinatura h1 { margin: 14px 0 4px; font-size: 1.9rem; letter-spacing: -0.02em; }
.descricao { margin: 0 0 20px; color: var(--muted); }
.recursos { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 10px; }
.recursos li { position: relative; padding-left: 28px; }
.recursos li::before { content: '✓'; position: absolute; left: 0; color: var(--ok); font-weight: 800; }

.aviso-troca {
  margin: 0 0 16px; padding: 12px 14px; border-radius: 12px; font-size: .9rem; line-height: 1.5;
  background: rgba(124, 108, 255, .10); border: 1px solid rgba(124, 108, 255, .35); color: #d4d8ff;
}
.aviso-troca strong { display: block; color: var(--text); margin-bottom: 2px; }
.aviso-troca b { color: var(--text); }
.calculo {padding: 18px; margin-bottom: 20px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); }
.calculo-linha, .calculo-total { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.calculo-linha { padding-bottom: 12px; margin-bottom: 12px; border-bottom: 1px solid var(--line); color: var(--muted); }
.calculo-linha strong { color: var(--text); }
.calculo-total span { font-weight: 600; }
.calculo-total strong { font-size: 1.8rem; letter-spacing: -0.02em; }
.nota { margin: 10px 0 0; color: var(--accent-2); font-size: .85rem; }

.quantidade { display: flex; align-items: center; gap: 6px; }
.quantidade button {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface-2);
  color: var(--text); font-size: 1.2rem; cursor: pointer;
}
.quantidade button:hover { border-color: var(--accent); }
.quantidade input {
  width: 64px; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface);
  color: var(--text); text-align: center; font-size: 1.05rem; font-weight: 700;
}
.largo { width: 100%; padding: 15px; font-size: 1.05rem; }
.msg { min-height: 1.2em; margin: 12px 0 0; color: var(--accent-2); font-size: .9rem; text-align: center; }
.voltar { display: block; margin-top: 16px; text-align: center; color: var(--muted); font-size: .9rem; }