.book-selector-page[data-v-b4b34a9a]{background:linear-gradient(135deg,#0f0c29,#1a1a2e 40%,#16213e 70%,#0f3460);color:#fff;min-height:100vh;overflow-x:hidden;-webkit-user-select:none;-moz-user-select:none;user-select:none}.header[data-v-b4b34a9a]{gap:12px;padding:16px 20px}.back-btn[data-v-b4b34a9a],.header[data-v-b4b34a9a]{align-items:center;display:flex}.back-btn[data-v-b4b34a9a]{background:#ffffff1a;border:none;border-radius:12px;color:#fff;cursor:pointer;height:40px;justify-content:center;transition:background .2s;width:40px}.back-btn[data-v-b4b34a9a]:hover{background:#fff3}.title[data-v-b4b34a9a]{font-size:20px;font-weight:700}.spacer[data-v-b4b34a9a]{width:40px}.book-selector[data-v-b4b34a9a]{align-items:center;display:flex;flex-direction:column;padding:0 20px 20px}.three-viewport[data-v-b4b34a9a]{cursor:grab;height:380px;touch-action:pan-y;width:100%}.three-viewport[data-v-b4b34a9a]:active{cursor:grabbing}.book-info[data-v-b4b34a9a]{margin-top:20px;text-align:center}.book-name[data-v-b4b34a9a]{font-size:24px;font-weight:700}.book-detail[data-v-b4b34a9a]{color:#ffffff80;font-size:14px;margin-top:4px}.page-indicator[data-v-b4b34a9a]{color:#fff9;font-size:16px;font-weight:600;letter-spacing:2px;margin-top:16px}.enter-btn[data-v-b4b34a9a]{align-items:center;background:linear-gradient(135deg,#6366f1,#8b5cf6);border:none;border-radius:16px;box-shadow:0 4px 20px #6366f166;color:#fff;cursor:pointer;display:flex;font-size:16px;font-weight:700;gap:8px;margin-top:24px;padding:14px 36px;transition:all .3s}.enter-btn[data-v-b4b34a9a]:hover{box-shadow:0 6px 28px #6366f180;transform:translateY(-2px)}.fallback-book-list[data-v-b4b34a9a]{display:flex;gap:16px;overflow-x:auto;padding:20px;scroll-snap-type:x mandatory;width:100%;-webkit-overflow-scrolling:touch}.fallback-book-card[data-v-b4b34a9a]{background:linear-gradient(135deg,var(--card-color),rgba(0,0,0,.3));border:2px solid transparent;border-radius:20px;cursor:pointer;flex-shrink:0;padding:24px 16px;scroll-snap-align:center;text-align:center;transition:transform .2s,box-shadow .2s;width:180px}.fallback-book-card.active[data-v-b4b34a9a]{border-color:#fff9;box-shadow:0 4px 20px #6366f166;transform:scale(1.05)}.fallback-book-card[data-v-b4b34a9a]:hover{transform:scale(1.03)}.fallback-book-icon[data-v-b4b34a9a]{font-size:3rem;margin-bottom:12px}.fallback-book-title[data-v-b4b34a9a]{font-size:16px;font-weight:700;margin-bottom:8px}.fallback-book-lessons[data-v-b4b34a9a]{color:#fff9;font-size:13px}