.container--narrow { width: min(640px, calc(100% - 2rem)); }

.signup-hero { margin-bottom: 1.25rem; }
.signup-eyebrow {
    margin: 0 0 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
}
.signup-hero h1 {
    margin: 0 0 0.5rem;
    font-size: clamp(1.6rem, 3vw, 2rem);
    letter-spacing: -0.03em;
}

.signup-steps {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin: 0 0 1.25rem;
    padding: 0;
}
.signup-steps li {
    display: flex;
    gap: 0.45rem;
    align-items: center;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.7);
    color: var(--muted);
    font-size: 0.9rem;
}
.signup-steps li span {
    display: inline-grid;
    place-items: center;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 999px;
    background: var(--line);
    color: var(--ink);
    font-weight: 700;
    font-size: 0.8rem;
}
.signup-steps li.is-active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--ink);
    font-weight: 600;
}
.signup-steps li.is-active span {
    background: var(--accent);
    color: #fff;
}
.signup-steps li.is-done {
    border-color: #b7d8c8;
    color: var(--ink);
}
.signup-steps li.is-done span {
    background: #1f8a68;
    color: #fff;
}

.signup-form h2 { margin: 0 0 0.35rem; }
.signup-panel[hidden] { display: none !important; }
.signup-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.25rem;
}
.signup-summary {
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: #f7faf8;
    padding: 0.9rem 1rem;
    margin: 0.75rem 0 1rem;
}
.signup-summary dl {
    display: grid;
    grid-template-columns: 8rem 1fr;
    gap: 0.35rem 0.75rem;
    margin: 0;
}
.signup-summary dt { color: var(--muted); }
.signup-summary dd { margin: 0; font-weight: 560; }
.signup-captcha { margin: 1rem 0; min-height: 65px; }
.field-error { color: var(--danger); margin: 0.4rem 0 0; }
.signup-login { text-align: center; margin-top: 1.25rem; }
.signup-thanks-panel { margin-top: 2rem; text-align: center; }
.signup-thanks-panel h1 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.45rem, 3vw, 1.85rem);
    letter-spacing: -0.03em;
}
.signup-hp {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.tiny { font-size: 0.85rem; }

@media (max-width: 640px) {
    .signup-steps { grid-template-columns: 1fr; }
    .signup-summary dl { grid-template-columns: 1fr; }
}