.folder3d{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:200px;padding:32px 0;border-radius:16px;cursor:pointer;transition:box-shadow .5s ease-out}.folder3d:hover{box-shadow:0 32px 64px -16px var(--pc300-25)}.folder3d-glow{position:absolute;inset:0;border-radius:16px;pointer-events:none;background:radial-gradient(circle at 50% 70%,var(--pc300) 0,transparent 70%);opacity:0;transition:opacity .5s ease-out}.folder3d:hover .folder3d-glow{opacity:.1}.folder3d-stage-wrap{position:relative;width:200px;height:160px;margin-bottom:16px}.folder3d-stage{position:relative;width:200px;height:160px;display:flex;align-items:center;justify-content:center;transform:skew(0,7.5deg);transition:transform .5s ease-out}.folder3d:hover .folder3d-stage{transform:skew(0,7.5deg) rotate(7.5deg)}.folder3d-cue{position:absolute;bottom:16px;right:16px;z-index:40}.folder3d-cue .material-symbols-outlined{font-variation-settings:'wght' 400}.folder3d-back,.folder3d-front,.folder3d-shine{position:absolute;width:128px;height:96px;border-radius:8px;left:50%;top:50%;margin:-48px 0 0 -64px;transform-origin:bottom center;transition:transform .5s ease-out,opacity .5s ease-out;pointer-events:none}.folder3d-back{border-radius:0 8px 8px 8px;background:linear-gradient(145deg,var(--pc600),var(--pc800));box-shadow:0 4px 12px rgba(0,0,10,.3);z-index:10}.folder3d:hover .folder3d-back{transform:rotateX(-15deg)}.folder3d-tab{position:absolute;width:48px;height:16px;border-radius:4px 4px 0 0;left:50%;top:50%;margin:-60px 0 0 -64px;background:var(--pc600);transform-origin:bottom center;transition:transform .5s ease-out;pointer-events:none;z-index:10}.folder3d:hover .folder3d-tab{transform:rotateX(-25deg) translateY(-2px)}.folder3d-front{margin-top:-40px;background:linear-gradient(145deg,var(--pc400),var(--pc500));box-shadow:0 8px 20px rgba(0,0,10,.35);z-index:32}.folder3d:hover .folder3d-front{transform:skew(15deg);opacity:.5}.folder3d-shine{margin-top:-44px;background:linear-gradient(135deg,var(--bw-25) 0,transparent 50%);pointer-events:none;z-index:31}.folder3d:hover .folder3d-shine{transform:skew(7.5deg)}@keyframes folder3d-hint-stage{0%,100%,40%{transform:skew(0,7.5deg)}15%,25%{transform:skew(0,7.5deg) rotate(7.5deg)}}@keyframes folder3d-hint-front{0%,100%,40%{transform:none;opacity:1}15%,25%{transform:skew(15deg);opacity:.5}}@keyframes folder3d-hint-shine{0%,100%,40%{transform:none}15%,25%{transform:skew(7.5deg)}}@media (hover:none) and (prefers-reduced-motion:no-preference){.folder3d-stage{animation:folder3d-hint-stage 5s ease-in-out infinite}.folder3d-front{animation:folder3d-hint-front 5s ease-in-out infinite}.folder3d-shine{animation:folder3d-hint-shine 5s ease-in-out infinite}}.folder3d-cards{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:20}.folder3d-card{position:absolute;left:-56px;top:0;width:112px;height:80px;border-radius:12px;overflow:hidden;background:var(--bw-10);box-shadow:0 10px 24px rgba(0,0,10,.4);padding:0;cursor:pointer;transform:translateY(0) translateX(0) rotate(0) scale(.5);opacity:0;transition:transform .6s ease-out var(--card-delay, 0ms),opacity .6s ease-out var(--card-delay, 0ms),box-shadow .2s ease-out}.folder3d:hover .folder3d-card{transform:translateY(-90px) translateX(var(--card-x,0)) rotate(var(--card-r,0deg)) scale(1);opacity:1}.folder3d-card:hover .folder3d-card-grad{box-shadow:inset 0 0 4px 0 var(--pc300)}.folder3d-card.is-hidden{opacity:0!important}.folder3d-card img{width:100%;height:100%;object-fit:cover;display:block}.folder3d-card-grad{position:absolute;inset:0;border-radius:12px;background:linear-gradient(to top,rgba(0,0,10,.65),transparent);box-shadow:inset 0 0 4px 0 var(--bw-25);transition:box-shadow .2s ease-out}.folder3d-card-title{position:absolute;bottom:6px;left:6px;right:6px;font-size:.75rem;font-weight:400;line-height:1;color:var(--bw-75);text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder3d-title{font:var(--h6);color:var(--bw-75);margin:16px 0 0;transition:transform .3s ease-out}.folder3d:hover .folder3d-title{transform:translateY(4px)}.folder3d-count{font:var(--label);color:var(--bw-75);margin:4px 0 0;transition:opacity .3s ease-out}.folder3d:hover .folder3d-count{opacity:.7}.folder3d-hint{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);font-size:12px;color:var(--bw-50);opacity:.6;transition:opacity .3s ease-out,transform .3s ease-out}.folder3d:hover .folder3d-hint{opacity:0;transform:translateX(-50%) translateY(10px)}.lb-card{transform-origin:center center}.lb-card .course-modal-body{padding:0 48px 16px 48px}@media (max-width:576px){.lb-card .course-modal-body{padding:0 24px 16px 24px}}.lb-foot{display:flex;align-items:center;justify-content:space-between;gap:16px}.lb-dots{display:flex;align-items:center;gap:6px}.lb-dot{width:8px;height:8px;border-radius:50%;padding:0;border:none;cursor:pointer;background:var(--bw-25);transition:background .3s ease-out,transform .3s ease-out}.lb-dot.is-active{background:var(--bw-75);transform:scale(1.1)}.lb-nav-row{display:flex;justify-content:space-between}