.ebook-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.ebook-card {
    background: var(--color-white); padding: 32px; border-radius: 20px;
    border: 1px solid var(--glass-border); border-left: 4px solid var(--color-sky);
    box-shadow: var(--shadow-soft); transition: var(--transition-smooth);
}
.ebook-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.ebook-card.accent-coral { border-left-color: var(--color-coral); }
.ebook-card.accent-terracotta { border-left-color: var(--color-terracotta); }
.ebook-icon { font-size: 2.5rem; margin-bottom: 16px; }
.ebook-card h3 { color: var(--color-primary); margin-bottom: 8px; }
.ebook-card p { color: var(--color-text-light); font-size: 0.9rem; margin-bottom: 20px; line-height: 1.5; }
.btn-external {
    display: inline-block; text-decoration: none; color: var(--color-primary);
    font-weight: 600; font-size: 0.9rem; transition: var(--transition-smooth);
}
.btn-external:hover { color: var(--color-accent); transform: translateX(4px); }