:root {
    --page-bg: #f6f7fb;
    --ink: #18212f;
    --muted: #667085;
}

body {
    min-height: 100vh;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(13, 110, 253, 0.14), transparent 32rem),
        linear-gradient(180deg, #ffffff 0%, var(--page-bg) 42%);
}

.header-menu {
    height: 40px;
    align-items: center;
    width: min(100%, 900px);
}
.app-shell {
    width: min(100%, 900px);
    min-height: 100vh;
    margin: 0 auto;
    padding: 2rem 1rem;
    display: grid;
    align-items: center;
}

.challenge-panel {
    width: 100%;
}

.eyebrow {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.challenge-card {
    border: 0;
    border-radius: 8px;
    box-shadow: 0 24px 80px rgba(24, 33, 47, 0.12);
}

.question-text {
    min-height: 5rem;
    font-size: clamp(1.35rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.25;
}

.options-grid {
    display: grid;
    gap: 0.85rem;
    grid-template-columns: 1fr;
}

.option-button {
    min-height: 4.25rem;
    padding: 1rem;
    text-align: left;
    white-space: normal;
    border-radius: 8px;
    font-weight: 700;
}

.option-letter {
    display: inline-grid;
    width: 2rem;
    height: 2rem;
    margin-right: 0.65rem;
    place-items: center;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.28);
}

.siteFooter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 18px 24px 24px;
  color: var(--muted);
  font-size: 0.88rem;
}

.siteFooter a {
  color: var(--muted);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-link-button {
  border: 0;
  padding: 0;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.subscribe-trigger {
    min-height: 2.25rem;
    font-weight: 700;
}

.subscribe-modal {
    border: 0;
    border-radius: 8px;
}

.confirmation-alert {
    border: 0;
    border-radius: 8px;
}

.session-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.session-stats > div {
    padding: 0.85rem;
    border: 1px solid rgba(24, 33, 47, 0.08);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.72);
}

.stat-label {
    display: block;
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
}

.session-stats strong {
    display: block;
    margin-top: 0.15rem;
    font-size: 1.35rem;
    line-height: 1;
}

.unsubscribe-reasons {
    display: grid;
    gap: 0.65rem;
}

.unsubscribe-reasons .form-check {
    min-height: 2.75rem;
    padding: 0.75rem 0.85rem 0.75rem 2.5rem;
    border: 1px solid rgba(24, 33, 47, 0.12);
    border-radius: 8px;
    background: #fff;
}

.unsubscribe-reasons .form-check-input {
    margin-left: -1.55rem;
}

.hp-field {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.benefits-shell {
    align-items: start;
    padding-top: 3rem;
}

.benefits-page {
    width: 100%;
    padding: 1rem 0 0;
}

.benefits-page h1 {
    max-width: 760px;
    margin: 0 0 1rem;
    font-size: clamp(2rem, 5vw, 3.8rem);
    line-height: 1.05;
    font-weight: 800;
}

.benefits-lead {
    max-width: 760px;
    color: var(--muted);
    font-size: 1.15rem;
    line-height: 1.7;
}

.benefits-section,
.benefits-grid {
    margin-top: 2rem;
}

.benefits-section h2,
.benefits-grid h2 {
    margin-bottom: 0.75rem;
    font-size: 1.35rem;
    font-weight: 800;
}

.benefits-section p,
.benefits-section li,
.benefits-grid li,
.benefits-note p {
    color: #344054;
    font-size: 1rem;
    line-height: 1.7;
}

.benefits-grid {
    display: grid;
    gap: 1rem;
}

.benefits-note {
    padding: 1.25rem;
    border-left: 4px solid #0d6efd;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 14px 40px rgba(24, 33, 47, 0.08);
}

.references-section a {
    color: #0d6efd;
    font-weight: 700;
}

.benefits-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .app-shell {
        padding: 3rem 1.5rem;
    }

    .options-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .session-stats {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .benefits-grid {
        grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    }
}