.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:#ffffffeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:1000}.navbar-inner{max-width:1100px;margin:0 auto;height:100%;display:flex;align-items:center;padding:0 24px;gap:32px}.navbar-logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--text)}.logo-icon{font-size:22px}.logo-text{letter-spacing:-.3px}.navbar-links{display:flex;gap:8px;flex:1}.nav-link{padding:6px 14px;border-radius:8px;font-size:15px;color:var(--text-secondary);transition:all .15s}.nav-link:hover,.nav-link.active{color:var(--primary);background:#3d7fff14}.navbar-right{margin-left:auto}.auth-btns{display:flex;gap:8px;align-items:center}.btn-ghost{padding:7px 16px;border-radius:8px;font-size:14px;color:var(--text-secondary);transition:all .15s}.btn-ghost:hover{background:var(--border)}.btn-primary{padding:7px 16px;border-radius:8px;font-size:14px;background:var(--primary);color:#fff;transition:all .15s}.btn-primary:hover{background:var(--primary-dark)}.user-menu{position:relative;cursor:pointer}.avatar{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.dropdown{position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow-hover);min-width:140px;overflow:hidden;animation:fadeIn .15s ease}.dropdown-name{padding:12px 16px 8px;font-size:13px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border)}.dropdown button{width:100%;padding:10px 16px;text-align:left;font-size:14px;color:#e53e3e;background:none;transition:background .1s}.dropdown button:hover{background:#fff5f5}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.book-card{cursor:pointer;transition:transform .2s,box-shadow .2s;width:140px}.book-card:hover{transform:translateY(-4px)}.book-card:hover .book-cover{box-shadow:var(--shadow-hover)}.book-cover{width:140px;height:196px;border-radius:8px;overflow:hidden;background:#e8e8e8;box-shadow:var(--shadow);position:relative;transition:box-shadow .2s}.book-cover img{width:100%;height:100%;object-fit:cover;display:block}.cover-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:48px;font-weight:700;font-family:"Noto Serif SC",serif}.progress-bar{position:absolute;bottom:0;left:0;right:0;height:3px;background:#ffffff4d}.progress-fill{height:100%;background:var(--primary);transition:width .3s}.book-info{padding:8px 2px 0}.book-title{font-size:13px;font-weight:500;line-height:1.4;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:3px}.book-author{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-progress{font-size:11px;color:var(--primary);margin-top:3px}.home-page{min-height:calc(100vh - var(--nav-height))}.home-hero{background:linear-gradient(135deg,#1e3a8a,#3d7fff);color:#fff;text-align:center;padding:60px 24px 48px}.home-hero h1{font-size:36px;font-weight:700;font-family:"Noto Serif SC",serif;margin-bottom:8px;letter-spacing:1px}.home-hero p{font-size:15px;opacity:.8;margin-bottom:28px}.search-bar{display:flex;max-width:520px;margin:0 auto;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px #0003}.search-bar input{flex:1;padding:14px 18px;font-size:15px;border:none;color:var(--text);background:transparent}.search-bar button{padding:14px 24px;background:var(--primary);color:#fff;font-size:15px;font-weight:500;border-left:1px solid rgba(0,0,0,.06);transition:background .15s}.search-bar button:hover{background:var(--primary-dark)}.home-content{max-width:1100px;margin:0 auto;padding:28px 24px 48px}.lang-tabs{display:flex;gap:6px;margin-bottom:16px;border-bottom:1.5px solid var(--border);padding-bottom:12px}.lang-tab{padding:6px 16px;border-radius:6px;font-size:14px;font-weight:500;background:transparent;color:var(--text-secondary);border:none;transition:all .15s}.lang-tab:hover{background:var(--bg-secondary);color:var(--text)}.lang-tab.active{background:var(--primary);color:#fff}.categories{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}.category-btn{padding:7px 16px;border-radius:20px;font-size:13px;background:#fff;color:var(--text-secondary);border:1.5px solid var(--border);transition:all .15s}.category-btn:hover{border-color:var(--primary);color:var(--primary)}.category-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.results-header{margin-bottom:20px}.results-count{font-size:14px;color:var(--text-secondary);font-weight:500}.results-count em{font-style:normal;color:var(--text-muted);font-weight:400;margin-left:6px}.empty-state{grid-column:1 / -1;text-align:center;padding:60px;color:var(--text-muted);font-size:15px}.pagination{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:40px}.pagination button{padding:9px 20px;border-radius:8px;font-size:14px;background:#fff;border:1.5px solid var(--border);color:var(--text-secondary);transition:all .15s}.pagination button:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.pagination button:disabled{opacity:.4;cursor:not-allowed}.pagination span{font-size:14px;color:var(--text-secondary)}.bookshelf-page{max-width:1100px;margin:0 auto;padding:36px 24px 60px}.shelf-header{margin-bottom:28px;display:flex;align-items:center;justify-content:space-between}.shelf-header h1{font-size:24px;font-weight:700;font-family:"Noto Serif SC",serif;margin-bottom:4px}.shelf-header p{font-size:13px;color:var(--text-muted)}.shelf-empty{text-align:center;padding:80px 20px}.empty-icon{font-size:56px;margin-bottom:16px}.shelf-empty h3{font-size:18px;font-weight:600;margin-bottom:8px}.shelf-empty p{font-size:14px;color:var(--text-muted);margin-bottom:24px}.go-discover{padding:11px 28px;background:var(--primary);color:#fff;border-radius:10px;font-size:15px;font-weight:500;transition:all .15s}.go-discover:hover{background:var(--primary-dark);transform:translateY(-1px)}.books-grid,.books-loading{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:28px 20px}.book-skeleton{width:140px;height:196px;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;border-radius:8px;animation:shimmer 1.4s infinite}.book-detail-page{min-height:calc(100vh - var(--nav-height));background:var(--bg)}.detail-container{max-width:900px;margin:0 auto;padding:40px 24px 60px;display:flex;gap:48px;align-items:flex-start}.detail-cover-area{flex-shrink:0;text-align:center}.detail-cover{width:200px;height:280px;border-radius:12px;overflow:hidden;box-shadow:0 12px 40px #0000002e;background:#e8e8e8}.detail-cover img{width:100%;height:100%;object-fit:cover}.cover-ph{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:72px;font-weight:700;font-family:"Noto Serif SC",serif}.detail-progress-badge{margin-top:12px;display:inline-block;padding:4px 12px;background:var(--primary);color:#fff;border-radius:12px;font-size:12px;font-weight:500}.detail-info{flex:1;min-width:0}.back-btn{background:none;color:var(--text-secondary);font-size:14px;padding:0;margin-bottom:20px;transition:color .15s}.back-btn:hover{color:var(--primary)}.detail-title{font-size:26px;font-weight:700;font-family:"Noto Serif SC",serif;line-height:1.3;margin-bottom:8px;color:var(--text)}.detail-author{font-size:15px;color:var(--text-secondary);margin-bottom:16px}.detail-meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:28px}.meta-tag{padding:4px 10px;background:#eef2ff;color:#4f46e5;border-radius:6px;font-size:12px;font-weight:500}.detail-actions{display:flex;gap:12px;margin-bottom:16px;flex-wrap:wrap}.btn-read{padding:12px 28px;background:var(--primary);color:#fff;border-radius:10px;font-size:15px;font-weight:600;transition:all .15s}.btn-read:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 14px #3d7fff59}.btn-read:disabled{opacity:.5;cursor:not-allowed}.btn-shelf{padding:12px 24px;background:#fff;border:1.5px solid var(--border);color:var(--text-secondary);border-radius:10px;font-size:15px;font-weight:500;transition:all .15s}.btn-shelf:hover{border-color:var(--primary);color:var(--primary)}.btn-shelf.in-shelf{background:#eef8f4;border-color:#34d399;color:#059669}.no-epub-tip{font-size:13px;color:#e53e3e;margin-bottom:20px}.detail-section{margin-top:28px}.detail-section h3{font-size:14px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}.subjects-list{display:flex;flex-wrap:wrap;gap:6px}.subject-tag{padding:5px 10px;background:#f8fafc;border:1px solid var(--border);color:var(--text-secondary);border-radius:6px;font-size:12px}.formats-list{display:flex;flex-wrap:wrap;gap:8px}.format-link{padding:6px 12px;background:#f8fafc;border:1px solid var(--border);border-radius:6px;font-size:12px;color:var(--primary);transition:all .15s}.format-link:hover{background:#eef2ff;border-color:var(--primary)}.detail-loading{max-width:900px;margin:40px auto;padding:0 24px;display:flex;gap:48px}.detail-cover-skeleton{width:200px;height:280px;border-radius:12px;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;animation:shimmer 1.4s infinite;flex-shrink:0}.detail-info-skeleton{flex:1;padding-top:40px;display:flex;flex-direction:column;gap:14px}.skel-line{height:16px;border-radius:8px;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;animation:shimmer 1.4s infinite}.skel-line.w40{width:40%}.skel-line.w60{width:60%;height:24px}.skel-line.w80{width:80%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.detail-error{text-align:center;padding:80px 24px}.detail-error p{font-size:16px;color:var(--text-secondary);margin-bottom:16px}.detail-error button{padding:10px 24px;background:var(--primary);color:#fff;border-radius:8px;font-size:14px}@media (max-width: 600px){.detail-container{flex-direction:column;align-items:center;gap:28px;padding:28px 16px 48px}}.reader-page{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;overflow:hidden}.reader-toolbar{position:relative;z-index:100;height:52px;display:flex;align-items:center;padding:0 16px;gap:12px;border-bottom:1px solid rgba(0,0,0,.06);transition:transform .25s ease,opacity .25s ease;box-shadow:0 1px 8px #0000000f}.reader-toolbar.hidden{transform:translateY(-100%);opacity:0;pointer-events:none}.toolbar-btn{background:none;border:none;font-size:20px;color:inherit;padding:6px;border-radius:6px;transition:background .15s;line-height:1}.toolbar-btn:hover{background:#0000000f}.toolbar-btn.back{font-size:18px}.toolbar-title{flex:1;font-size:14px;font-weight:500;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;opacity:.7}.toolbar-right{display:flex;gap:4px}.reader-area{flex:1;position:relative;overflow:hidden}.epub-container{width:100%;height:100%;transition:transform .18s ease,opacity .18s ease}.epub-container.flip-next{animation:flipNext .18s ease forwards}.epub-container.flip-prev{animation:flipPrev .18s ease forwards}@keyframes flipNext{0%{transform:translate(0);opacity:1}50%{transform:translate(-30px);opacity:.4}to{transform:translate(0);opacity:1}}@keyframes flipPrev{0%{transform:translate(0);opacity:1}50%{transform:translate(30px);opacity:.4}to{transform:translate(0);opacity:1}}.page-zone{position:absolute;top:0;bottom:0;width:30%;cursor:pointer;z-index:10}.page-zone.left{left:0}.page-zone.right{right:0}.reader-footer{height:52px;display:flex;align-items:center;padding:0 8px;gap:8px;border-top:1px solid rgba(0,0,0,.06);transition:transform .25s ease,opacity .25s ease}.reader-footer.hidden{transform:translateY(100%);opacity:0;pointer-events:none}.flip-btn{flex-shrink:0;padding:6px 14px;background:var(--primary);color:#fff;border:none;border-radius:20px;font-size:13px;font-weight:500;cursor:pointer;white-space:nowrap}.flip-btn:active{opacity:.8}.footer-center{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;min-width:0}.pct-label{font-size:12px;color:var(--text-muted);white-space:nowrap}.progress-track{flex:1;height:3px;background:#e8e8e8;border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:var(--primary);border-radius:2px;transition:width .4s ease}.reader-loading,.reader-error{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;z-index:5}.reader-loading .spinner{width:36px;height:36px;border:3px solid #e8e8e8;border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}.reader-loading p{font-size:14px;color:var(--text-muted)}.reader-error p{font-size:15px;color:#e53e3e}.reader-error button{padding:9px 22px;background:var(--primary);color:#fff;border-radius:8px;font-size:14px}.toc-panel{position:absolute;top:52px;left:0;bottom:40px;width:280px;z-index:200;box-shadow:4px 0 20px #0000001f;display:flex;flex-direction:column;animation:slideIn .2s ease}@keyframes slideIn{0%{transform:translate(-100%)}to{transform:translate(0)}}.toc-header,.settings-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid rgba(0,0,0,.08)}.toc-header h3,.settings-header h3{font-size:16px;font-weight:600}.toc-header button,.settings-header button{background:none;font-size:16px;color:inherit;opacity:.5;transition:opacity .15s}.toc-header button:hover,.settings-header button:hover{opacity:1}.toc-list{flex:1;overflow-y:auto;padding:8px 0}.toc-item{width:100%;text-align:left;padding:10px 20px;font-size:14px;background:none;color:inherit;transition:background .1s;line-height:1.4}.toc-item:hover{background:#0000000d}.toc-empty{padding:20px;font-size:13px;opacity:.5;text-align:center}.settings-panel{position:absolute;top:52px;right:0;width:260px;z-index:200;box-shadow:-4px 0 20px #0000001f;border-radius:0 0 0 12px;animation:slideInRight .2s ease}@keyframes slideInRight{0%{transform:translate(100%)}to{transform:translate(0)}}.setting-row{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid rgba(0,0,0,.06);font-size:14px}.font-size-ctrl{display:flex;align-items:center;gap:10px}.font-size-ctrl button{width:32px;height:32px;border-radius:8px;background:#0000000f;font-size:13px;font-weight:600;color:inherit;transition:background .15s}.font-size-ctrl button:hover{background:#0000001f}.font-size-ctrl span{font-size:13px;min-width:40px;text-align:center}.theme-btns{display:flex;gap:8px}.theme-btn{width:36px;height:36px;border-radius:50%;border:2px solid transparent;font-size:12px;font-weight:600;transition:border-color .15s,transform .15s;box-shadow:0 1px 4px #00000026}.theme-btn.active{border-color:var(--primary);transform:scale(1.1)}@keyframes spin{to{transform:rotate(360deg)}}.auth-page{min-height:calc(100vh - var(--nav-height));display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f5f7ff,#f0f4ff);padding:24px}.auth-card{background:#fff;border-radius:20px;box-shadow:0 8px 40px #0000001a;padding:40px;width:100%;max-width:400px}.auth-header{text-align:center;margin-bottom:28px}.auth-logo{font-size:40px;display:block;margin-bottom:12px}.auth-header h1{font-size:22px;font-weight:700;color:var(--text);margin-bottom:6px}.auth-header p{font-size:14px;color:var(--text-muted)}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-error{background:#fff5f5;border:1px solid #fed7d7;color:#c53030;padding:10px 14px;border-radius:8px;font-size:14px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-group input{padding:11px 14px;border:1.5px solid var(--border);border-radius:10px;font-size:15px;color:var(--text);transition:border-color .15s;background:#fafafa}.form-group input:focus{border-color:var(--primary);background:#fff}.auth-submit{padding:13px;background:var(--primary);color:#fff;border-radius:10px;font-size:15px;font-weight:600;transition:all .15s;margin-top:4px}.auth-submit:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #3d7fff4d}.auth-submit:disabled{opacity:.7;cursor:not-allowed}.auth-switch{text-align:center;margin-top:20px;font-size:14px;color:var(--text-muted)}.auth-switch a{color:var(--primary);font-weight:500}.auth-switch a:hover{text-decoration:underline}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #3d7fff;--primary-dark: #2563eb;--bg: #f5f5f0;--card-bg: #ffffff;--text: #1a1a1a;--text-secondary: #666;--text-muted: #999;--border: #e8e8e8;--shadow: 0 2px 12px rgba(0,0,0,.08);--shadow-hover: 0 6px 24px rgba(0,0,0,.14);--radius: 12px;--nav-height: 60px}body{font-family:Noto Sans SC,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;outline:none;font-family:inherit}input{font-family:inherit;outline:none}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ddd;border-radius:3px}.page-enter{opacity:0;transform:translateY(8px)}.page-enter-active{opacity:1;transform:translateY(0);transition:opacity .2s,transform .2s}