.book {
    border-radius: 8px;
    box-shadow: inset 0 0 0 1px var(--border, rgba(255, 255, 255, 0.08));
    flex-shrink: 0;
}

.book-a { background: linear-gradient(160deg, var(--purple-bright, #9333ea), var(--purple, #6d28d9)); aspect-ratio: 2 / 3; }
.book-b { background: linear-gradient(160deg, var(--pink, #ec4899), var(--purple, #6d28d9)); aspect-ratio: 2 / 3; }
.book-c { background: linear-gradient(160deg, var(--gold, #f5d489), var(--pink, #ec4899)); aspect-ratio: 2 / 3; }
.book-d { background: linear-gradient(160deg, var(--purple, #6d28d9), var(--theme-header-end, var(--pink, #ec4899))); aspect-ratio: 2 / 3; }

.book-bar-frame {
    position: relative;
    max-width: 1100px;
    margin: 64px auto 0;
    padding: 56px 0 72px;
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.book-bar {
    position: absolute;
    inset: 0;
    overflow: hidden;
    opacity: 0.5;
    display: flex;
    align-items: center;
    -webkit-mask-image: linear-gradient(to right, transparent, black 12%, black 88%, transparent);
    mask-image: linear-gradient(to right, transparent, black 12%, black 88%, transparent);
}

.book-bar-track {
    display: flex;
    align-items: center;
    gap: 36px;
    width: max-content;
    animation: scroll-row 22s linear infinite;
}

.book-bar-frame:hover .book-bar-track {
    animation-play-state: paused;
}

.book-bar-track .book {
    width: clamp(160px, 20vw, 280px);
    flex: 0 0 auto;
}

@keyframes scroll-row {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.feature-grid {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.feature-card {
    position: relative;
    padding: 20px;
    text-align: left;
}

.feature-card--editor {
    padding-right: 92px;
}

.feature-preview {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 1;
    padding: 5px 11px;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.2;
    border-radius: 999px;
}

.feature-card h3 {
    margin: 0 0 6px;
    font-size: 15px;
    font-weight: 800;
}

.feature-card p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.library-cta {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    margin-top: 28px;
}