.signup-header {
    display: flex;
    justify-content: center;
    padding: 24px 0;
}

.signup-header a {
    display: inline-flex;
    align-items: center;
    gap: 13px;
    color: var(--text);
    font-size: 22px;
    font-weight: 750;
    letter-spacing: -.025em;
    text-decoration: none;
}

.signup-header img {
    width: 44px;
    height: 44px;
    border-radius: 11px;
}

.content-center {
    min-height: calc(100vh - 150px);
    display: grid;
    place-items: center;
    padding: 34px 0 70px;
}

.auth-card {
    width: min(100%, 480px);
    padding: 34px;
    border-color: #d2d2cd;
    border-radius: 16px;
    background: #efefeb;
}

.signup-eyebrow {
    margin: 0 0 8px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.auth-card h1 {
    font-size: 30px;
    letter-spacing: -.03em;
}

.auth-card input { background: #fff; }
.auth-card .btn { margin-top: 4px; }

@media (max-width: 600px) {
    .signup-header { padding: 15px 0; }
    .signup-header a { gap: 10px; font-size: 19px; }
    .signup-header img { width: 36px; height: 36px; border-radius: 9px; }

    .content-center {
        min-height: auto;
        place-items: start stretch;
        padding: 30px 0 24px;
    }

    .auth-card {
        width: 100%;
        border: 0;
        padding: 0;
        background: transparent;
    }

    .auth-card h1 {
        font-size: 34px;
        line-height: 1.08;
    }

    .auth-card .muted { margin-bottom: 28px; }
    .auth-card .btn { width: 100%; margin-top: 4px; }
    .helper-text { margin-top: 18px; font-size: 15px; }
}