.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(2rem, 6vw, 6rem);
    padding: clamp(3rem, 8vw, 7rem) clamp(1.5rem, 5vw, 4rem);
    max-width: 1100px;
    margin: 0 auto;
    box-sizing: border-box;
}

/* Book cover */
.hero__book {
    flex: 0 0 auto;
    width: clamp(300px, 30vw, 400px);
}

.hero__book img {
    width: 100%;
    height: auto;
    display: block;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.18);
}

/* Author info */
.hero__info {
    flex: 1 1 auto;
    max-width: 480px;
}

.hero__name {
    font-family: 'PlayfairDisplay', serif;
    font-size: clamp(3rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #111;
    margin: 0 0 0.25rem;
    line-height: 1.1;
}

.hero__title {
    font-family: 'PlayfairDisplay', serif;
    font-size: clamp(1.5rem, 2.5vw, 1.75rem);
    font-style: italic;
    margin: 0 0 1.4rem;
}

.hero__description {
    font-family: 'Roboto', serif;
    font-size: 1rem;
    line-height: 1.75;
    color: #333;
    margin: 0 0 2rem;
}

/* CTA button */
.hero__cta {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border: 2px solid #111;
    background: transparent;
    color: #111;
    font-family: 'Montserrat', serif;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.hero__cta:hover {
    background: #111;
    color: #fff;
}

/* ── Responsive: stack vertically on small screens ─────── */
@media (max-width: 1000px) {
    .hero {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 2rem;
        padding: 2.5rem 1.25rem;
    }

    .hero__book {
        width: clamp(220px, 40vw, 300px);
    }

    .hero__info {
        max-width: 100%;
    }

}

/* ── Substack CTA ──────────────────────────────────────── */
.substack-cta {
    background-color: #f0a66e;
    color: #2a1400;
    padding: clamp(3rem, 7vw, 5rem) clamp(1.5rem, 5vw, 4rem);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(2rem, 6vw, 5rem);
    box-sizing: border-box;
}

.substack-cta__text {
    flex: 1 1 auto;
    max-width: 540px;
}

.substack-cta__eyebrow {
    font-family: 'PlayfairDisplay', serif;
    font-size: 1rem;
    font-style: italic;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(42, 20, 0, 0.8);
    margin: 0 0 0.6rem;
}

.substack-cta__heading {
    font-family: 'PlayfairDisplay', serif;
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin: 0 0 1rem;
    color: #1a0900;
}

.substack-cta__body {
    font-family: 'Roboto', serif;
    font-size: clamp(0.9rem, 1.4vw, 1rem);
    line-height: 1.75;
    color: rgba(42, 20, 0, 0.82);
    margin: 0;
}

.substack-cta__action {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

/* Substack logomark */
.substack-cta__icon {
    width: 52px;
    height: 52px;
}

.substack-cta__btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: #1a0900;
    color: #f0a66e;
    font-family: 'Montserrat', serif;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.substack-cta__btn:hover {
    background: #825838;
    color: white;
}

.substack-cta__note {
    font-family: 'PlayfairDisplay', serif;
    font-size: 1rem;
    font-style: italic;
    color: rgba(42, 20, 0, 0.8);
    margin: 0;
    text-align: center;
}

/* ── Responsive: stack on mobile ──────────────────────── */
@media (max-width: 640px) {
    .substack-cta {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        padding: 3rem 1.5rem;
    }

    .substack-cta__text {
        max-width: 100%;
    }

    .substack-cta__btn {
        width: 100%;
        text-align: center;
    }
}