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#e9ecef;padding:1.5rem}.feedback-form-section .card-header h3{color:#2c3e50;font-size:1.25rem;font-weight:600;margin:0}.feedback-form-section .card-body{padding:1.5rem}.form-group{margin-bottom:1.5rem}.form-group label{color:#495057;display:block;font-weight:500;margin-bottom:.5rem}.form-control{border:1px solid #ced4da;font-size:1rem;padding:.75rem;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out}.form-control:focus{border-color:#80bdff;box-shadow:0 0 0 .2rem #007bff40}.form-control::placeholder{color:#6c757d;opacity:.7}.form-text{color:#6c757d;font-size:.875rem;margin-top:.25rem}.feedback-history-section .card{border:none;border-radius:8px;box-shadow:0 2px 4px #0000001a}.feedback-history-section .card-header{background-color:#fff;border-bottom:1px solid #e9ecef;padding:1.5rem}.feedback-history-section .card-header h3{color:#2c3e50;font-size:1.25rem;font-weight:600;margin:0}.feedback-history-section .card-body{padding:1.5rem}.feedback-list{display:flex;flex-direction:column;gap:1rem}.feedback-item{background-color:#fff;border:1px solid #e9ecef;border-radius:8px;padding:1.5rem;transition:box-shadow .2s ease}.feedback-item:hover{box-shadow:0 4px 8px #0000001a}.feedback-item .feedback-header{align-items:flex-start;display:flex;justify-content:space-between;margin-bottom:1rem}.feedback-item .feedback-header h5{color:#2c3e50;flex:1 1;font-size:1.1rem;font-weight:600;margin:0}.feedback-meta{align-items:center;display:flex;flex-wrap:wrap;gap:.5rem}.feedback-date{color:#6c757d;font-size:.875rem}.feedback-content{color:#495057;line-height:1.6;margin-bottom:1rem}.admin-note{background-color:#e3f2fd;border-left:4px solid #2196f3;border-radius:4px;margin-top:1rem;padding:1rem}.admin-note strong{color:#1976d2;display:block;margin-bottom:.5rem}.admin-note p{color:#424242;margin:0}.feedback-info-section .card{border:none;border-radius:8px;box-shadow:0 2px 4px #0000001a}.feedback-info-section .card-header{background-color:#fff;border-bottom:1px solid #e9ecef;padding:1.5rem}.feedback-info-section .card-header h3{color:#2c3e50;font-size:1.25rem;font-weight:600;margin:0}.feedback-info-section .card-body{padding:1.5rem}.info-list{display:flex;flex-direction:column;gap:1.5rem}.info-item h5{color:#2c3e50;font-size:1rem;font-weight:600;margin-bottom:.5rem}.info-item p{color:#6c757d;line-height:1.6;margin:0}.badge{border-radius:.25rem;display:inline-block;font-size:.75rem;font-weight:500;line-height:1;padding:.25rem .5rem;text-align:center;vertical-align:initial;white-space:nowrap}.badge-low{background-color:#28a745;color:#fff}.badge-medium{background-color:#ffc107;color:#212529}.badge-high{background-color:#fd7e14;color:#fff}.badge-urgent{background-color:#dc3545;color:#fff}.badge-pending{background-color:#6c757d;color:#fff}.badge-reviewed{background-color:#17a2b8;color:#fff}.badge-resolved{background-color:#28a745;color:#fff}.badge-closed{background-color:#6c757d;color:#fff}.btn{border:1px solid #0000;display:inline-block;font-size:1rem;font-weight:400;line-height:1.5;padding:.75rem 1.5rem;text-align:center;transition:all .15s ease-in-out;vertical-align:middle}.btn-primary{border-color:#007bff}.btn-primary:hover{border-color:#0056b3}.btn-primary:disabled{cursor:not-allowed;opacity:.65}.btn-block{display:block;width:100%}.alert{margin-bottom:1rem;padding:.75rem 1.25rem}.spinner-border{animation:spinner-border .75s linear infinite;border:.25em solid;border-radius:50%;border-right:.25em solid #0000;display:inline-block;height:2rem;vertical-align:text-bottom;width:2rem}@keyframes spinner-border{to{transform:rotate(1turn)}}.text-primary{color:#007bff!important}.text-muted{color:#6c757d!important}.text-center{text-align:center!important}@media (max-width:768px){.feedback-page{padding:1rem 0}.feedback-header h1{font-size:2rem}.feedback-content{padding:0 1rem}.feedback-form-section .card-body,.feedback-form-section .card-header,.feedback-history-section .card-body,.feedback-history-section .card-header,.feedback-info-section .card-body,.feedback-info-section .card-header{padding:1rem}.feedback-item .feedback-header{flex-direction:column;gap:.5rem}.feedback-meta{justify-content:flex-start}.info-list{gap:1rem}}@media (max-width:576px){.feedback-header h1{font-size:1.75rem}.feedback-header .lead{font-size:1rem}.feedback-content{gap:1.5rem}.feedback-item{padding:1rem}.admin-note{padding:.75rem}}.message-board-container{margin:0 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p{color:#666;line-height:1.5;margin:0}.share-section{margin-bottom:24px}.share-section h5{color:#333;font-size:1.1rem;font-weight:600;margin:0 0 12px}.link-share{display:flex;gap:8px;margin-bottom:8px}.share-url-input{background:#f8f9fa;border:2px solid #e0e0e0;border-radius:6px;color:#333;flex:1 1;font-size:14px;padding:10px 12px}.share-url-input:focus{border-color:#667eea;outline:none}.copy-btn{background:#667eea;border:none;border-radius:6px;color:#fff;cursor:pointer;font-weight:500;padding:10px 16px;transition:background-color .2s}.copy-btn:hover{background:#5a67d8}.copy-success{animation:fadeIn .3s ease-out;color:#28a745;font-size:14px;margin:0}.social-share{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}.social-btn{align-items:center;border:none;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-weight:500;gap:8px;justify-content:center;padding:12px 16px;text-decoration:none;transition:all .2s}.social-btn:hover{box-shadow:0 4px 12px #0003;transform:translateY(-2px)}.social-btn i{font-size:1.2rem}.social-btn.weibo{background:#e6162d}.social-btn.weibo:hover{background:#d01426}.social-btn.qq{background:#12b7f5}.social-btn.qq:hover{background:#0ea5e9}.social-btn.wechat{background:#07c160}.social-btn.wechat:hover{background:#06ad56}.social-btn.twitter{background:#1da1f2}.social-btn.twitter:hover{background:#1a91da}.social-btn.facebook{background:#1877f2}.social-btn.facebook:hover{background:#166fe5}.social-btn.linkedin{background:#0077b5}.social-btn.linkedin:hover{background:#006ba1}.qr-share{display:flex;justify-content:center}.qr-code-container{text-align:center}.qr-code{border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 2px 8px #0000001a;margin-bottom:12px}.download-qr-btn{background:#28a745;border:none;border-radius:6px;color:#fff;cursor:pointer;font-weight:500;padding:8px 16px;transition:background-color .2s}.download-qr-btn:hover{background:#218838}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (max-width:768px){.share-modal{margin:20px;width:95%}.share-modal-content{padding:16px}.social-share{grid-template-columns:repeat(2,1fr)}.link-share{flex-direction:column}.copy-btn{width:100%}}@media (max-width:480px){.social-share{grid-template-columns:1fr}.social-btn{padding:14px 16px}}.library-background{animation:woodGrain 20s ease-in-out infinite;background:linear-gradient(45deg,#8b4513,sienna 25%,peru 50%,tan 75%,#deb887);background-size:400% 400%;position:relative}.library-background:before{background-image:repeating-linear-gradient(90deg,#0000,#0000 2px,#8b45131a 0,#8b45131a 4px),repeating-linear-gradient(0deg,#0000,#0000 20px,#a0522d0d 0,#a0522d0d 40px);bottom:0;content:"";left:0;pointer-events:none;position:absolute;right:0;top:0}@keyframes woodGrain{0%,to{background-position:0 50%}50%{background-position:100% 50%}}.bookshelf-container{min-height:100vh;padding:2rem;position:relative}.bookshelf{background:linear-gradient(180deg,#8b4513 0,sienna 50%,#654321);border-radius:8px;box-shadow:0 4px 8px #0000004d,inset 0 2px 4px #ffffff1a;margin-bottom:3rem;padding:1rem;position:relative}.bookshelf:before{background:linear-gradient(180deg,#654321,#8b4513);border-radius:8px 8px 0 0;box-shadow:0 -2px 4px #0003;content:"";height:20px;left:0;position:absolute;right:0;top:-10px}.bookshelf-label{background:#2c1810;border-radius:4px;box-shadow:0 2px 4px #0000004d;color:#d4af37;font-family:Georgia,serif;font-size:.9rem;font-weight:700;left:20px;padding:.5rem 1rem;position:absolute;top:-35px}.books-grid{grid-gap:.5rem;display:grid;gap:.5rem;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));padding:1rem 0}.book-spine{border-radius:0 4px 4px 0;box-shadow:2px 0 4px #0000004d,inset -2px 0 4px #0003;cursor:pointer;height:200px;overflow:hidden;position:relative;transition:all .3s ease;width:100%}.book-spine:hover{box-shadow:4px 5px 12px #0006,inset -2px 0 4px #0003;transform:translateY(-5px) rotateY(-5deg)}.book-spine.fantasy{background:linear-gradient(90deg,#4a148c 0,#7b1fa2 50%,#9c27b0)}.book-spine.romance{background:linear-gradient(90deg,#c2185b 0,#e91e63 50%,#f06292)}.book-spine.mystery{background:linear-gradient(90deg,#1a237e 0,#303f9f 50%,#3f51b5)}.book-spine.scifi{background:linear-gradient(90deg,#004d40 0,#00695c 50%,#00796b)}.book-spine.historical{background:linear-gradient(90deg,#bf360c 0,#d84315 50%,#ff5722)}.book-spine.adventure{background:linear-gradient(90deg,#e65100 0,#f57c00 50%,#ff9800)}.book-spine.default{background:linear-gradient(90deg,#424242 0,#616161 50%,#757575)}.book-title{bottom:1rem;color:#fff;font-size:.8rem;font-weight:700;max-width:160px;overflow:hidden;text-overflow:ellipsis}.book-author,.book-title{font-family:Georgia,serif;left:50%;position:absolute;text-shadow:1px 1px 2px #000000b3;transform:translateX(-50%) rotate(-90deg);transform-origin:center;white-space:nowrap}.book-author{color:#fffc;font-size:.6rem;top:1rem}.book-share-btn{align-items:center;background:#ffffffe6;border-radius:50%;cursor:pointer;display:flex;height:24px;justify-content:center;opacity:0;position:absolute;right:8px;top:8px;transition:all .3s ease;width:24px;z-index:10}.book-spine:hover .book-share-btn{opacity:1}.book-share-btn:hover{background:#fff;transform:scale(1.1)}.book-share-btn i{color:#666;font-size:12px}.book-spine:before{background:linear-gradient(180deg,#ffffff4d 0,#ffffff1a 50%,#0003);left:0;width:4px}.book-spine:after,.book-spine:before{bottom:0;content:"";position:absolute;top:0}.book-spine:after{background:#0006;right:0;width:2px}.reading-lamp{height:100px;position:fixed;right:2rem;top:2rem;width:60px;z-index:1000}.lamp-base{background:linear-gradient(90deg,#8b4513,sienna);border-radius:0 0 10px 10px;height:60px;margin:0 auto;width:20px}.lamp-shade{animation:lampGlow 3s ease-in-out infinite alternate;background:radial-gradient(ellipse at center,#fff8dce6 0,#fff8dc99 50%,#fff8dc4d 100%);border-radius:50%;height:40px;position:relative;width:60px}@keyframes lampGlow{0%{box-shadow:0 0 20px #fff8dc80}to{box-shadow:0 0 40px #fff8dccc}}.library-title{margin-bottom:3rem;position:relative;text-align:center}.library-title h1{color:#2c1810;font-family:Georgia,serif;font-size:3rem;margin-bottom:.5rem;text-shadow:2px 2px 4px #0000004d}.library-title .subtitle{color:#8b4513;font-family:Georgia,serif;font-size:1.2rem;font-style:italic}.library-search{align-items:center;background:#fffffff2;border-radius:25px;box-shadow:0 8px 24px #00000026;display:flex;justify-content:center;margin:0 auto 3rem;max-width:600px;padding:0!important;position:relative}.library-search input{background:#fff8dcf2;border:none;border-radius:25px;box-shadow:inset 0 2px 4px #00000014;display:block;font-family:Georgia,serif;font-size:1rem;padding:.9rem 1.4rem;width:100%}.library-search input:focus{border-color:#d4af37;box-shadow:inset 0 2px 4px #0000001a,0 0 10px #d4af374d;outline:none}@media (max-width:768px){.books-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr))}.book-spine{height:150px}.book-title{font-size:.7rem}.library-title h1{font-size:2rem}.reading-lamp{display:none}}.books-loading{align-items:center;display:flex;height:200px;justify-content:center}.loading-book{animation:bookFlip 1.5s ease-in-out infinite;background:linear-gradient(45deg,#8b4513,#d4af37);border-radius:0 4px 4px 0;height:60px;margin:0 5px;width:40px}.loading-book:nth-child(2){animation-delay:.2s}.loading-book:nth-child(3){animation-delay:.4s}@keyframes bookFlip{0%,to{transform:rotateY(0deg)}50%{transform:rotateY(180deg)}}.chinese-style{direction:rtl}.chinese-style .reading-area{direction:rtl;text-align:right}.vertical-text{background:linear-gradient(270deg,#fff8dc 0,beige);border:2px solid #8b4513;border-radius:8px;box-shadow:inset 0 0 20px #8b45131a;direction:rtl;font-family:SimSun,宋体,serif;line-height:2;min-height:400px;padding:2rem;text-align:justify;text-orientation:upright;writing-mode:vertical-rl}.chinese-controls{direction:ltr;flex-direction:row-reverse}.chinese-controls .page-btn{background:#8b4513;border:2px solid #d4af37;color:#fff8dc;font-family:SimSun,宋体,serif}.chinese-controls .page-btn:hover{background:sienna;box-shadow:0 0 10px #d4af3780}.book-reader{background:#fff8dcfa;border:3px solid #8b4513;border-radius:15px;box-shadow:0 10px 40px #0000004d,inset 0 0 20px #8b45131a;margin:2rem auto;max-width:900px;padding:2rem}.book-header{background:linear-gradient(135deg,#fff8dc,beige);border-bottom:3px solid #d4af37;border-radius:8px;margin-bottom:2rem;padding:1.5rem}.back-btn{background:linear-gradient(135deg,#8b4513,sienna);border:2px solid #d4af37;border-radius:8px;color:#fff8dc;cursor:pointer;font-family:Georgia,serif;font-weight:700;margin-bottom:1rem;padding:.7rem 1.5rem;transition:all .3s 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