.library-shelf{margin-top:20px;padding:16px;border-radius:18px;background:linear-gradient(135deg,#eef9ff,#fff8e8);border:1px solid #d8e7ee}.library-shelf-head{display:flex;justify-content:space-between;align-items:center}.library-shelf-head span{color:#177f73;font-weight:900;font-size:13px}.library-shelf-head h3{margin:4px 0;color:#183c58}.library-shelf-head small{color:#7c8b99}.book-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:13px}.book-card{border:1px solid #dbe5ea;border-radius:12px;padding:8px;background:#fff;text-align:left;color:#193b55;cursor:pointer}.book-card:hover{transform:translateY(-2px);box-shadow:0 8px 18px #234b741c}.book-cover{display:grid;place-items:center;height:74px;border-radius:8px;font-size:31px;background:linear-gradient(135deg,#b8e9e2,#dcecff)}.book-cover.c1{background:linear-gradient(135deg,#ffe6a9,#ffd3c2)}.book-cover.c2{background:linear-gradient(135deg,#dce7ff,#e6d8ff)}.book-cover.c3{background:linear-gradient(135deg,#d8f1c8,#fff0bd)}.book-card b,.book-card small,.book-card em{display:block}.book-card b{margin-top:7px;font-size:12px}.book-card small{margin-top:3px;color:#718395;font-size:10px}.book-card em{margin-top:4px;color:#18816f;font-style:normal;font-size:10px}.book-detail{margin-top:12px;padding:11px;border-radius:11px;background:#ffffffb8;color:#557086;font-size:12px;line-height:1.6}.book-detail:empty{display:none}.book-detail b{color:#1a4662;font-size:14px}.book-detail p{margin:3px 0}@media(max-width:700px){.book-grid{grid-template-columns:repeat(2,1fr)}}