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h4{margin:0;font-size:.95rem}.mini-book .author{color:var(--muted);font-size:.85rem}.section-header{padding:0 1rem}.section-header h2{margin-bottom:.35rem}.section-header p{margin-top:0;color:var(--muted)}.subsection-header{padding:0 1rem;margin-top:2rem}.muted{color:var(--muted)}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;padding:1rem 1rem 0}.card-grid.book-cards{grid-template-columns:repeat(auto-fill,minmax(180px,200px));gap:1.5rem;justify-content:start}.card-grid::-webkit-scrollbar{display:none}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 12px 30px #1e40af14;transition:transform .15s ease,box-shadow .15s ease,translate .15s ease}.card.book-card{max-width:200px;width:100%;min-height:420px;background:#fff;border:1px solid #e2e8f0;border-radius:12px;box-shadow:0 4px 16px #0f172a1a;overflow:hidden}.card:hover{transform:translateY(-4px);box-shadow:0 16px 36px #1e40af1f}.card-cover{width:100%;height:220px;object-fit:cover;background:var(--soft)}.card.book-card .card-cover{height:280px;object-fit:contain;background:var(--soft);padding:.5rem}.card-content{padding:1rem 1.1rem 1.25rem;display:flex;flex-direction:column;gap:.35rem}.card h3{margin:0;font-size:1.05rem}.author{color:var(--muted);margin:0;font-weight:500}.description{margin:.25rem 0 .5rem;color:var(--muted);font-size:.95rem}.card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:auto}.price{font-weight:700;color:var(--primary)}button{border:none;border-radius:12px;padding:.65rem 1.05rem;font-size:.95rem;font-weight:600;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background-color .2s ease,color .2s ease;font-family:inherit}button:active{transform:translateY(1px)}.primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 10px 24px #2563eb4d}.primary:hover{background:linear-gradient(135deg,var(--primary-2),#143ba8)}.primary.ghost{background:var(--primary);border:1px solid var(--primary);box-shadow:none;color:#fff}.primary.ghost:hover{background:var(--primary-2);border-color:var(--primary-2)}.secondary{background:#fff;color:var(--text);border:1px solid var(--border)}.secondary:hover{background:var(--soft)}.profile-card{display:flex;align-items:center;gap:1rem;margin:1rem 1rem 0;padding:1rem;background:linear-gradient(135deg,#eef3ff,#fff);border:1px solid var(--border);border-radius:14px}.avatar{width:52px;height:52px;border-radius:50%;background:var(--primary);display:grid;place-items:center;font-weight:700;color:#fff;font-size:1.1rem}.reader{padding:1rem}.reader-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.reader-topbar h2{margin:0}.reader-topbar a{padding:.55rem .9rem;border-radius:10px}.reader-frame{background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:0 12px 30px #1e40af14}.reader-frame iframe{width:100%;height:70vh}.footer{padding:1rem 1rem 1.6rem;text-align:center;color:var(--muted);font-size:.95rem}.video-page{padding:2rem 1rem 2.5rem;background:radial-gradient(circle at 20% 20%,rgba(37,99,235,.08),transparent 40%),#f7faff;min-height:80vh}.video-hero{max-width:760px;margin:0 auto 1.6rem;text-align:center}.video-hero h1{margin:.3rem 0 .5rem}.video-stage{max-width:980px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:20px;padding:1.4rem 1.4rem 1.8rem;box-shadow:0 16px 42px #1e40af14}.video-frame{background:#0f1f45;border-radius:16px;padding:.9rem;border:1px solid #254b94;box-shadow:0 12px 28px #0a122938}.video-frame video{width:100%;border-radius:10px;display:block;background:#000b1f;border:1px solid rgba(255,255,255,.1)}.video-highlights{margin-top:1.1rem;display:flex;gap:.6rem;flex-wrap:wrap;justify-content:center}@media(max-width:1200px){.ebooks-grid{grid-template-columns:1fr!important}}@media(max-width:900px){.stage-main{grid-template-columns:1fr}}@media(max-width:640px){.navbar{flex-direction:column;gap:.75rem;align-items:flex-start}.nav-links{width:100%;justify-content:space-between}.stage{padding:1.1rem}.shelf-row{grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}.card-grid{grid-template-columns:1fr}.reader-topbar{flex-direction:column;align-items:flex-start;gap:.5rem}}