.signup-card { max-width: 32rem; width: calc(100% - 2rem); }
.signup-card .intro { margin-bottom: 1.25rem; }
.signup-card .check { margin: 0; font-size: .94rem; }
.signup-card details { margin: .5rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.signup-card details > div { display: grid; gap: .6rem; margin-bottom: 1rem; }
.signup-card #guardian-fields { padding: 1rem; }
.field-help { margin: 0; color: var(--muted); font-size: .88rem; }

.signup-card > .brand { margin-bottom: 1.25rem; }