.book-club-selector{max-width:1200px;margin:0 auto;padding:20px;opacity:1;transition:opacity 0.3s ease}.book-main-swiper{margin-bottom:30px;border-radius:16px;position:relative}.book-main-swiper .swiper-button-next,.book-main-swiper .swiper-button-prev{width:44px;height:44px;background:rgb(255 255 255 / .9);border-radius:50%;box-shadow:0 4px 12px rgb(0 0 0 / .15);color:#1a73e8;transition:all 0.3s ease;backdrop-filter:blur(10px)}.book-main-swiper .swiper-button-next:hover,.book-main-swiper .swiper-button-prev:hover{background:#1a73e8;color:#fff;transform:scale(1.1)}.book-main-swiper .swiper-button-next::after,.book-main-swiper .swiper-button-prev::after{font-size:18px;font-weight:600}@media (min-width:768px){.book-main-swiper .swiper-button-next{right:-22px}.book-main-swiper .swiper-button-prev{left:-22px}}.book-preview{display:flex;gap:40px;padding:40px;background:#fff;border-radius:16px;box-shadow:0 8px 32px rgb(0 0 0 / .08);transition:transform 0.3s ease,opacity 0.3s ease}.book-preview.slide-changing{opacity:0;transform:translateY(20px)}.book-preview-image{width:300px;height:300px;position:relative;box-shadow:0 12px 24px rgb(0 0 0 / .15);transition:transform 0.3s ease;flex-shrink:0;overflow:visible}.book-preview-image img{width:100%;height:100%;object-fit:cover;display:block;border-radius:12px}.book-preview-image:hover{transform:translateY(-5px)}.default-cover{width:100%;height:100%;background:#f0f2f5;display:flex;align-items:center;justify-content:center;border-radius:12px}.book-icon{width:40%;height:40%;color:#a0a0a0}.book-preview-content{flex:1;display:flex;flex-direction:column;min-width:0}.ribbon{--f:0.5em;position:absolute;top:0;right:0;line-height:1.8;padding:0 1.2em var(--f);font-size:14px;font-weight:500;color:#fff;background:#1a73e8;border-image:conic-gradient(#0008 0 0) 51%/var(--f);clip-path:polygon(100% calc(100% - var(--f)),100% 100%,calc(100% - var(--f)) calc(100% - var(--f)),var(--f) calc(100% - var(--f)),0 100%,0 calc(100% - var(--f)),999px calc(100% - var(--f) - 999px),calc(100% - 999px) calc(100% - var(--f) - 999px));transform:translate(calc((1 - cos(45deg))*100%),-100%) rotate(45deg);transform-origin:0% 100%;z-index:2}.book-title{font-size:32px;font-weight:600;color:#1a1a1a;margin:0 0 8px;line-height:1.2}.book-author{font-size:18px;color:#666;margin:0 0 20px}.book-description{font-size:16px;line-height:1.6;color:#424242;margin:0 0 30px;flex-grow:1}.book-meta{display:flex;gap:24px;margin-bottom:30px}.meta-item{display:flex;align-items:center;gap:8px;color:#666;font-size:14px}.meta-icon{width:20px;height:20px;color:#1a73e8}.listen-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:16px 32px;background:#1a73e8;color:#fff;border:none;border-radius:30px;font-size:16px;font-weight:500;cursor:pointer;transition:all 0.2s ease;width:fit-content}.listen-button:hover{background:#1557b0;transform:translateY(-2px);box-shadow:0 4px 12px rgb(26 115 232 / .2)}.listen-icon{width:24px;height:24px}.listen-button.loading{position:relative;pointer-events:none;opacity:.7}.listen-button.loading::after{content:'';position:absolute;width:20px;height:20px;border:2px solid rgb(255 255 255 / .3);border-top-color:#fff;border-radius:50%;right:16px;animation:spin 1s linear infinite}.book-thumbs-swiper{padding:20px 0;margin:0 -20px}.book-thumbs-swiper .swiper-slide{width:120px;opacity:.5;transition:all 0.3s ease;cursor:pointer}.book-thumbs-swiper .swiper-slide-thumb-active{opacity:1}.book-thumb{position:relative;width:100%;aspect-ratio:1/1;box-shadow:0 4px 8px rgb(0 0 0 / .1);transition:transform 0.3s ease;overflow:visible}.book-thumb:hover{transform:translateY(-3px)}.book-thumb img{width:100%;height:100%;object-fit:cover;border-radius:8px}.book-thumb-title{position:absolute;bottom:0;left:0;right:0;padding:8px;background:rgb(0 0 0 / .7);color:#fff;font-size:12px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-bottom-left-radius:8px;border-bottom-right-radius:8px}.book-thumb .ribbon{--f:0.3em;font-size:10px;padding:0 .8em var(--f);line-height:1.6}.book-club-error{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#d32f2f;color:#fff;padding:12px 24px;border-radius:8px;box-shadow:0 4px 12px rgb(0 0 0 / .15);z-index:1000;animation:slideUp 0.3s ease}.book-club-player-container{opacity:1;transition:opacity 0.3s ease}@keyframes spin{to{transform:rotate(360deg)}}@keyframes slideUp{from{transform:translate(-50%,100%);opacity:0}to{transform:translate(-50%,0);opacity:1}}@media (max-width:1024px){.book-preview{padding:30px;gap:30px}.book-preview-image{width:250px;height:250px}}@media (max-width:768px){.book-preview{flex-direction:column;padding:20px;gap:24px;align-items:center}.book-preview-image{width:200px;height:200px}.book-preview-content{text-align:center;align-items:center}.book-thumbs-swiper .swiper-slide{width:100px}.book-meta{justify-content:center}}@media (max-width:480px){.book-preview-image{width:160px;height:160px}.book-meta{flex-wrap:wrap;justify-content:center}.book-thumbs-swiper .swiper-slide{width:80px}.book-club-nav.swiper-button-next,.book-club-nav.swiper-button-prev{width:36px;height:36px}.book-club-nav::after{font-size:16px}}