.bk-entrance{position:relative;display:inline-flex;align-items:center;gap:.55rem;padding:.4rem .85rem .4rem 2.55rem;border:1px solid var(--r-accent-line,rgba(104,69,185,.3));border-radius:999px;background:var(--r-accent-soft,rgba(104,69,185,.12));color:var(--r-accent-ink,#5c3ea8);font-size:12px;font-weight:600;line-height:1.2;white-space:nowrap;transition:transform .35s cubic-bezier(.32,.72,.24,1),box-shadow .35s cubic-bezier(.32,.72,.24,1),border-color .2s ease}.bk-entrance:focus-visible,.bk-entrance:hover{transform:translateY(-2px);border-color:var(--r-accent-line-strong,rgba(104,69,185,.55));box-shadow:0 12px 26px -14px var(--r-shadow-strong,rgba(62,45,91,.35))}.bk-entrance-arrow{opacity:.7;transition:transform .35s cubic-bezier(.32,.72,.24,1),opacity .2s ease}.bk-entrance:focus-visible .bk-entrance-arrow,.bk-entrance:hover .bk-entrance-arrow{opacity:1;transform:translateX(3px)}.bk-entrance-book{position:absolute;left:.72rem;bottom:.26rem;width:22px;height:29px;perspective:120px;transform-origin:50% 100%;transform:rotate(-9deg);animation:bk-entrance-bob 3.4s ease-in-out infinite}.bk-entrance-book>span{position:absolute;display:block}.bk-entrance-back{inset:0;border-radius:2px 4px 4px 2px;background:#4a3192;box-shadow:0 5px 8px -3px rgba(45,28,84,.55)}.bk-entrance-pages{background:repeating-linear-gradient(180deg,transparent 0 4px,rgba(74,49,146,.22) 4px 5px) 5px 6px /10px 15px no-repeat,#fdfcf8}.bk-entrance-leaf,.bk-entrance-pages{inset:2px 2px 2px 1px;border-radius:1px 2px 2px 1px}.bk-entrance-leaf{background:#f4f0fb;transform-origin:0 50%;transform:rotateY(0deg);backface-visibility:hidden}.bk-entrance-cover{inset:0;border-radius:2px 4px 4px 2px;background:linear-gradient(90deg,rgba(0,0,0,.28) 0 2px,transparent 2px 4px,hsla(0,0%,100%,.16) 4px 5px,transparent 5px),linear-gradient(155deg,#8a6fd6,#5a3ea6 60%,#4a3192);transform-origin:0 50%;transform:rotateY(-16deg);transition:transform .55s cubic-bezier(.32,.72,.24,1);animation:bk-entrance-peek 5.2s ease-in-out infinite}.bk-entrance-cover:after{content:"";position:absolute;left:7px;right:4px;top:6px;height:6px;border-radius:1px;background:hsla(0,0%,100%,.72)}.bk-entrance:focus-visible .bk-entrance-book,.bk-entrance:hover .bk-entrance-book{animation-play-state:paused}.bk-entrance:focus-visible .bk-entrance-cover,.bk-entrance:hover .bk-entrance-cover{animation:none;transform:rotateY(-152deg)}.bk-entrance:focus-visible .bk-entrance-leaf,.bk-entrance:hover .bk-entrance-leaf{animation:bk-entrance-turn 1.5s cubic-bezier(.32,.72,.24,1) .3s infinite}@keyframes bk-entrance-bob{0%,to{transform:rotate(-9deg) translateY(0)}50%{transform:rotate(-5deg) translateY(-2px)}}@keyframes bk-entrance-peek{0%,62%,to{transform:rotateY(-16deg)}74%{transform:rotateY(-58deg)}86%{transform:rotateY(-12deg)}}@keyframes bk-entrance-turn{0%{transform:rotateY(0deg)}55%,to{transform:rotateY(-165deg)}}@media (prefers-reduced-motion:reduce){.bk-entrance,.bk-entrance-arrow,.bk-entrance-cover{transition:none}.bk-entrance-book,.bk-entrance-cover,.bk-entrance:hover .bk-entrance-leaf{animation:none}}