.signup-shell {
  padding-bottom: max(64px, env(safe-area-inset-bottom));
}

.signup-hero {
  max-width: 760px;
  padding: clamp(68px, 10vh, 112px) 0 38px;
}

.signup-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(42px, 7vw, 70px);
  line-height: 1;
  letter-spacing: -.05em;
}

.signup-intro {
  max-width: 640px;
  margin: 22px 0 26px;
  color: var(--muted);
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.5;
}

.billing-toggle {
  width: fit-content;
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.64);
  box-shadow: 0 10px 26px rgba(20,48,84,.08);
}

.billing-choice {
  min-height: 40px;
  padding: 0 17px;
  border: 0;
  border-radius: 10px;
  color: #46627f;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  background: transparent;
  cursor: pointer;
}

.billing-choice.is-active {
  color: #fff;
  background: var(--blue);
}

.annual-note {
  display: inline-block;
  margin: 0 0 0 12px;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 750;
}

.signup-message {
  margin: 0 0 20px;
  padding: 14px 16px;
  border: 1px solid rgba(22,119,255,.22);
  border-radius: 14px;
  color: #174d88;
  background: rgba(255,255,255,.66);
}

.signup-message-muted {
  color: var(--muted);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.plan-card {
  position: relative;
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255,255,255,.76);
  box-shadow: 0 18px 48px rgba(20,48,84,.09);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.plan-card-featured {
  border-color: rgba(22,119,255,.4);
  box-shadow: 0 20px 52px rgba(22,119,255,.14);
}

.plan-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 5px 9px;
  border-radius: 999px;
  color: #0d5fd7;
  font-size: 11px;
  font-weight: 850;
  background: rgba(22,119,255,.1);
}

.plan-card h2 {
  margin: 0;
  font-size: 24px;
  letter-spacing: -.025em;
}

.plan-summary {
  min-height: 66px;
  margin: 10px 0 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin-bottom: 20px;
}

.plan-price strong {
  font-size: 34px;
  letter-spacing: -.035em;
}

.plan-price span {
  color: var(--muted);
  font-size: 13px;
}

.plan-features {
  min-height: 118px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.plan-features li {
  position: relative;
  padding: 8px 0 8px 23px;
  color: #334f6e;
  font-size: 14px;
  line-height: 1.4;
}

.plan-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 900;
}

.plan-form label {
  display: block;
  margin-bottom: 7px;
  color: #334f6e;
  font-size: 12px;
  font-weight: 800;
}

.plan-form input[type="email"] {
  width: 100%;
  min-height: 48px;
  margin-bottom: 11px;
  padding: 0 13px;
  border: 1px solid rgba(80,119,166,.28);
  border-radius: 12px;
  color: var(--ink);
  font: inherit;
  background: rgba(255,255,255,.86);
}

.plan-form input[type="email"]:focus {
  outline: 3px solid rgba(22,119,255,.16);
  border-color: var(--blue);
}

.plan-action {
  width: 100%;
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 0;
  border-radius: 13px;
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 850;
  background: linear-gradient(135deg, var(--blue), #3b8fff);
  box-shadow: 0 12px 26px rgba(22,119,255,.2);
  cursor: pointer;
}

.plan-action-disabled {
  color: #60738a;
  background: rgba(100,117,141,.12);
  box-shadow: none;
  cursor: default;
}

.checkout-note,
.signup-privacy {
  text-align: center;
}

.checkout-note {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.signup-privacy {
  margin-top: 10px;
}

@media (max-width: 860px) {
  .plan-grid { grid-template-columns: 1fr; }
  .plan-card { padding: 25px; }
  .plan-summary,
  .plan-features { min-height: 0; }
}

@media (max-width: 560px) {
  .signup-hero { padding-top: 60px; }
  .signup-hero h1 { font-size: clamp(40px, 12vw, 56px); }
  .billing-toggle { width: 100%; }
  .billing-choice { flex: 1; }
  .annual-note { display: block; margin: 10px 0 0; }
}