:root {
    --hb-ink: #1f2528;
    --hb-muted: #5f6b70;
    --hb-bg: #f6f8f9;
    --hb-surface: #ffffff;
    --hb-line: #dce4e7;
    --hb-teal: #176b63;
    --hb-teal-dark: #0e4c47;
    --hb-gold: #d69d28;
    --hb-coral: #c8523f;
    --hb-red: #b42318;
    --hb-shadow: 0 20px 50px rgba(26, 43, 48, 0.12);
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--hb-bg);
    color: var(--hb-ink);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
}

a {
    color: var(--hb-teal);
}

a:hover {
    color: var(--hb-teal-dark);
}

.hb-navbar {
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--hb-line);
    backdrop-filter: blur(14px);
}

.navbar-brand {
    color: var(--hb-ink);
    font-weight: 800;
    letter-spacing: 0;
}

.brand-mark {
    align-items: center;
    background: var(--hb-teal);
    border-radius: 8px;
    color: #ffffff;
    display: inline-flex;
    height: 36px;
    justify-content: center;
    width: 36px;
}

.nav-link {
    color: var(--hb-muted);
    font-weight: 700;
}

.nav-link.active,
.nav-link:hover {
    color: var(--hb-teal);
}

.hb-youtube-link,
.btn {
    align-items: center;
    border-radius: 8px;
    display: inline-flex;
    gap: 0.5rem;
    justify-content: center;
    letter-spacing: 0;
}

.btn-primary {
    --bs-btn-bg: var(--hb-teal);
    --bs-btn-border-color: var(--hb-teal);
    --bs-btn-hover-bg: var(--hb-teal-dark);
    --bs-btn-hover-border-color: var(--hb-teal-dark);
}

.btn-warning {
    --bs-btn-color: #1f2528;
    --bs-btn-bg: var(--hb-gold);
    --bs-btn-border-color: var(--hb-gold);
    --bs-btn-hover-color: #1f2528;
    --bs-btn-hover-bg: #c98d17;
    --bs-btn-hover-border-color: #c98d17;
}

.btn-danger {
    --bs-btn-bg: var(--hb-coral);
    --bs-btn-border-color: var(--hb-coral);
    --bs-btn-hover-bg: #a94232;
    --bs-btn-hover-border-color: #a94232;
}

.home-intro,
.page-heading {
    background: #eaf3f1;
    border-bottom: 1px solid var(--hb-line);
    padding: clamp(3rem, 7vw, 6rem) 0;
}

.page-heading.success-heading {
    background: #e9f6ed;
}

.page-heading.warning-heading {
    background: #fff4df;
}

.home-intro h1 {
    font-size: clamp(2.25rem, 4.4vw, 4rem);
    font-weight: 850;
    letter-spacing: 0;
    line-height: 1.06;
    margin: 0;
    max-width: 820px;
}

.page-heading h1 {
    font-size: clamp(2.5rem, 6vw, 5.5rem);
    font-weight: 850;
    letter-spacing: 0;
    line-height: 0.98;
    margin: 0;
    max-width: 980px;
}

.lead {
    color: var(--hb-muted);
    font-size: clamp(1.08rem, 2vw, 1.25rem);
}

.eyebrow {
    color: var(--hb-coral);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

.home-badge {
    align-items: center;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--hb-line);
    border-radius: 8px;
    color: var(--hb-teal-dark);
    display: inline-flex;
    font-weight: 800;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.55rem 0.8rem;
}

.home-badge i {
    color: var(--hb-coral);
}

.availability-box {
    align-items: flex-start;
    background: var(--hb-surface);
    border: 1px solid var(--hb-line);
    border-radius: 8px;
    box-shadow: var(--hb-shadow);
    display: grid;
    gap: 0.35rem;
    padding: 1.25rem;
}

.availability-box span,
.availability-box strong {
    display: block;
}

.availability-box span {
    color: var(--hb-muted);
}

.availability-box i {
    color: var(--hb-gold);
    font-size: 1.5rem;
}

.availability-box strong {
    color: var(--hb-teal);
    font-size: 1.35rem;
    line-height: 1.1;
    text-transform: uppercase;
}

.section-pad {
    padding: clamp(3rem, 7vw, 6rem) 0;
}

.product-section {
    padding-bottom: clamp(1.75rem, 4vw, 3rem);
}

.track-section {
    padding-top: clamp(1rem, 3vw, 2rem);
}

.book-card,
.contact-form {
    background: var(--hb-surface);
    border: 1px solid var(--hb-line);
    border-radius: 8px;
    box-shadow: var(--hb-shadow);
    padding: clamp(1.25rem, 3vw, 2rem);
}

.book-card h2,
.section-heading h2,
.sample-band h2,
.contact-form h2,
.prose h2 {
    font-weight: 800;
    letter-spacing: 0;
}

.book-kicker {
    color: var(--hb-coral);
    font-weight: 850;
    margin-bottom: 0.35rem;
}

.book-cover {
    aspect-ratio: 1060 / 1500;
    border: 1px solid rgba(31, 37, 40, 0.16);
    border-radius: 8px;
    box-shadow: 0 16px 34px rgba(31, 37, 40, 0.18);
    height: auto;
    max-height: 430px;
    object-fit: cover;
    width: min(100%, 280px);
}

.book-cover-large {
    max-height: 620px;
    width: min(100%, 380px);
}

.book-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.book-meta span {
    align-items: center;
    background: #eef4f4;
    border-radius: 8px;
    color: var(--hb-teal-dark);
    display: inline-flex;
    font-size: 0.9rem;
    gap: 0.4rem;
    padding: 0.45rem 0.7rem;
}

.sample-band {
    background: #253235;
    color: #ffffff;
    padding: clamp(2.5rem, 5vw, 4rem) 0;
}

.sample-band p {
    color: rgba(255, 255, 255, 0.76);
    margin-bottom: 0;
}

.download-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.download-stack {
    display: grid;
    gap: 1rem;
    max-width: 460px;
}

.hb-download-btn {
    min-height: 64px;
}

.hb-download-btn.is-downloading {
    opacity: 0.82;
}

.feature-strip {
    background: var(--hb-surface);
    border: 1px solid var(--hb-line);
    border-radius: 8px;
    display: grid;
    gap: 1px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow: hidden;
}

.feature-strip > div {
    background: var(--hb-surface);
    padding: 1.5rem;
}

.feature-strip i {
    color: var(--hb-coral);
    font-size: 1.6rem;
}

.feature-strip h3 {
    font-size: 1.05rem;
    font-weight: 800;
    margin: 0.8rem 0 0.35rem;
}

.feature-strip p {
    color: var(--hb-muted);
    margin: 0;
}

.section-heading {
    margin-bottom: 1.5rem;
}

.hb-tabs {
    border-bottom-color: var(--hb-line);
}

.hb-tabs .nav-link {
    border-radius: 8px 8px 0 0;
    color: var(--hb-muted);
    font-weight: 800;
}

.hb-tabs .nav-link.active {
    color: var(--hb-teal);
}

.track-tab-content {
    background: var(--hb-surface);
    border: 1px solid var(--hb-line);
    border-top: 0;
    border-radius: 0 0 8px 8px;
    padding: clamp(1.25rem, 3vw, 2rem);
}

.track-list {
    columns: 2;
    column-gap: 3rem;
    margin: 0;
    padding-left: 1.25rem;
}

.track-list li {
    break-inside: avoid;
    margin-bottom: 0.45rem;
    padding-left: 0.25rem;
}

.about-photo {
    aspect-ratio: 3 / 2;
    border-radius: 8px;
    box-shadow: var(--hb-shadow);
    height: auto;
    object-fit: cover;
    width: 100%;
}

.prose {
    font-size: 1.08rem;
}

.prose p:last-child {
    margin-bottom: 0;
}

.contact-list {
    display: grid;
    gap: 1rem;
    list-style: none;
    margin: 1.5rem 0;
    padding: 0;
}

.contact-list li {
    align-items: flex-start;
    display: flex;
    gap: 0.8rem;
}

.contact-list i {
    color: var(--hb-coral);
    font-size: 1.25rem;
    line-height: 1.4;
}

.contact-form .form-control {
    border-color: #cfdadd;
    border-radius: 8px;
    min-height: 48px;
}

.contact-form textarea.form-control {
    min-height: 190px;
}

.support-note {
    color: var(--hb-muted);
    margin-top: 1.5rem;
}

.return-link {
    align-items: center;
    display: inline-flex;
    font-weight: 800;
    gap: 0.45rem;
    text-decoration: none;
}

.site-footer {
    background: var(--hb-ink);
    color: #ffffff;
    padding: 1.5rem 0;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.76);
    text-decoration: none;
}

.footer-nav a:hover {
    color: #ffffff;
}

@media (max-width: 991.98px) {
    .feature-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767.98px) {
    .home-intro,
    .page-heading {
        padding: 3rem 0;
    }

    .download-grid {
        grid-template-columns: 1fr;
    }

    .track-list {
        columns: 1;
    }
}

@media (max-width: 575.98px) {
    .feature-strip {
        grid-template-columns: 1fr;
    }

    .book-card,
    .contact-form {
        padding: 1rem;
    }

    .hb-download-btn,
    .hb-buy-btn {
        width: 100%;
    }
}