.idea-section{position:relative;overflow:hidden;padding:8rem 0}.idea-section__inner{max-width:800px;margin:0 auto;text-align:center}.idea-section__headline{margin-bottom:2rem}.idea-section__desc{font-size:var(--fs-lg);color:var(--text-secondary);line-height:1.8;margin-bottom:3rem}.idea-section--glow:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60vw;height:60vw;background:radial-gradient(circle,rgba(212,175,55,.05) 0%,transparent 70%);z-index:-1;pointer-events:none}.tm{font-size:.4em;vertical-align:super;font-family:var(--font-sans);color:var(--gold-secondary)}.bookshelf-section{padding-bottom:8rem}.book-card{display:flex;flex-direction:column;gap:1.5rem;height:100%}.book-card__cover{aspect-ratio:2/3;width:100%;border-radius:var(--radius-md);overflow:hidden;position:relative;transition:transform .4s cubic-bezier(.16,1,.3,1),box-shadow .4s ease;box-shadow:0 10px 30px #00000080;border:1px solid var(--border-gold)}.book-card:hover .book-card__cover{transform:translateY(-10px);box-shadow:0 15px 40px #d4af371a}.book-card__cover--placeholder{background:linear-gradient(145deg,var(--bg-card),var(--bg-primary));display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem;color:var(--text-primary);height:100%}.book-card__cover-title{font-family:var(--font-serif);font-size:clamp(1.2rem,2vw,1.5rem);margin-bottom:1rem;color:var(--gold-primary);line-height:1.2}.book-card__cover-author{font-family:var(--font-sans);font-size:var(--fs-xs);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.1em}.book-card__info{text-align:center;flex-grow:1;display:flex;flex-direction:column}.book-card__title{font-family:var(--font-serif);font-size:var(--fs-lg);margin-bottom:.75rem;color:var(--text-primary)}.book-card__desc{font-size:var(--fs-sm);color:var(--text-secondary);line-height:1.6}@media(max-width:768px){.idea-section{padding:5rem 0}.idea-section__desc{font-size:var(--fs-base)}.bookshelf-section{padding-bottom:5rem}}