*{box-sizing:border-box;margin:0;padding:0}html{height:100dvh}body:has(.reader-view){height:100dvh;overflow:hidden}:root{--bg-primary:#f0efe2;--bg-muted:#e6e5d8;--surface:#fff;--surface-alt:#f9fafc;--text-primary:#111827;--text-muted:#6b7280;--border-color:#1f243014;--accent:#1a1a1a;--accent-dark:#000;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--shadow-light:0 1px 2px #0000000d;--shadow-medium:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;--shadow-strong:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;--transition-base:.2s ease;--space-1:4px;--space-2:8px;--space-3:16px;--space-4:24px;--space-5:32px;--space-6:48px;--space-10:80px}#root{width:100%;height:100%}.reader-font-serif{font-family:Songti SC,Noto Serif SC,Times New Roman,serif}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app-container{max-width:1200px;min-height:100vh;margin:0 auto;padding:60px 40px}.main-content{flex-direction:column;gap:48px;display:flex}.header{border-bottom:1px solid #0000000f;justify-content:space-between;align-items:flex-end;padding-bottom:24px;display:flex}.header-title{flex-direction:column;gap:4px;display:flex}.header-title h1{color:var(--text-primary);letter-spacing:-.01em;font-size:20px;font-weight:500}.header-title p{color:var(--text-muted);font-size:14px}.header-actions{align-items:center;gap:12px;display:flex}.upload-button{color:#fff;cursor:pointer;background:#1a1b1e;border-radius:6px;align-items:center;gap:8px;padding:8px 16px;font-size:13px;font-weight:500;transition:all .2s;display:flex}.upload-button:hover{background:#000;transform:translateY(-1px)}.books-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));align-items:start;gap:24px;display:grid}.book-card{cursor:pointer;background:#fff;border:1px solid #0000000a;flex-direction:column;gap:12px;padding:12px;transition:box-shadow .2s;display:flex;box-shadow:0 2px 4px #00000005}.book-card:hover{box-shadow:0 8px 16px #00000014}.book-card-media{aspect-ratio:2/3;background:#f0f0f0;width:100%;position:relative;overflow:hidden;box-shadow:0 4px 8px #0000001a}.book-cover{object-fit:cover;width:100%;height:100%}.book-cover-placeholder{color:#9ca3af;background-color:#f3f4f6;justify-content:center;align-items:center;width:100%;height:100%;display:flex}.book-card-body{flex-direction:column;gap:6px;display:flex}.book-card-title h3{color:var(--text-primary);-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;font-size:16px;font-weight:600;line-height:1.3;display:-webkit-box;overflow:hidden}.book-card-title span{display:none}.book-author{color:var(--text-muted);font-size:13px}.upload-overlay{color:#fff;opacity:0;z-index:10;background:#0009;flex-direction:column;justify-content:center;align-items:center;gap:8px;transition:opacity .2s;display:flex;position:absolute;inset:0}.book-card-media:hover .upload-overlay{opacity:1}.book-card-actions{opacity:0;z-index:10;gap:4px;transition:opacity .2s;display:flex;position:absolute;top:8px;right:8px}.book-card:hover .book-card-actions{opacity:1}.card-icon-button{width:28px;height:28px;color:var(--text-primary);cursor:pointer;background:#fff;border:1px solid #0000001a;border-radius:4px;justify-content:center;align-items:center;display:flex}.card-icon-button:hover{background:#f3f4f6}@keyframes skeleton-pulse{0%{opacity:.6}50%{opacity:1}to{opacity:.6}}.skeleton-card{cursor:default;pointer-events:none}.skeleton-cover{aspect-ratio:2/3;background:#f3f4f6;width:100%;animation:1.5s ease-in-out infinite skeleton-pulse}.skeleton-content{flex-direction:column;gap:8px;display:flex}.skeleton-line{background:#f3f4f6;border-radius:4px;height:12px;animation:1.5s ease-in-out infinite skeleton-pulse}.skeleton-title{width:70%;height:16px;margin-bottom:4px}.skeleton-author{width:40%}.skeleton-meta{width:30%;display:none}.reader-loading{height:100vh;color:var(--text-muted);background-color:#f9f9f8;flex-direction:column;justify-content:center;align-items:center;gap:16px;font-size:14px;display:flex}.loading-spinner{border:3px solid #0000001a;border-top-color:var(--text-primary);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.reader-view{background-color:var(--bg-primary);overscroll-behavior:none;-webkit-overflow-scrolling:touch;flex-direction:column;width:100%;height:100dvh;font-family:Songti SC,Noto Serif SC,serif;display:flex;position:fixed;inset:0;overflow:hidden}.reader-content-wrapper{flex:1;justify-content:center;align-items:center;min-height:0;display:flex;position:relative;overflow:hidden}.reader-main{flex:1;justify-content:center;min-width:0;height:100%;display:flex}.epub-viewer{width:100%;height:100%}.epub-viewer iframe{border:none;width:100%;height:100%}.reader-nav-button{cursor:pointer;width:40px;height:40px;color:var(--text-muted);z-index:10;background:#fffffff2;border:1px solid #00000014;border-radius:50%;justify-content:center;align-items:center;transition:all .2s;display:flex;position:absolute;top:50%;transform:translateY(-50%);box-shadow:0 2px 8px #00000014}.reader-nav-prev{left:16px}.reader-nav-next{right:16px}.reader-nav-button:hover{color:var(--text-primary);background:#fff;transform:scale(1.05);box-shadow:0 4px 12px #0000001a}.reader-top-bar{z-index:20;background:0 0;flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.icon-button{color:#888;cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;width:40px;height:40px;transition:all .2s;display:flex}.icon-button:hover{color:#333;background:#0000000d}.reader-bottom-bar{z-index:20;background:0 0;flex-shrink:0;justify-content:space-between;align-items:center;min-height:48px;padding:12px 24px;display:flex}.reader-chapter-info{color:#888;font-family:Songti SC,serif;font-size:13px}.reader-page-info{color:#888;align-items:center;gap:4px;font-family:Songti SC,serif;font-size:13px;font-weight:500;display:flex}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100;background:#fff9;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background:#fff;border:1px solid #0000000d;border-radius:16px;flex-direction:column;width:100%;max-width:480px;max-height:80vh;display:flex;overflow:hidden;box-shadow:0 20px 40px -4px #0000001a,0 8px 16px -4px #0000000d}.modal-header{border-bottom:1px solid #0000000a;justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.modal-header h3{font-size:16px;font-weight:600}.modal-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:4px}.modal-body{padding:8px 0;overflow-y:auto}.toc-item-row{cursor:pointer;color:var(--text-primary);border-left:3px solid #0000;padding:12px 24px;font-size:15px;transition:background .2s}.toc-item-row:hover{background:var(--bg-muted)}.toc-item-row.active{color:#fff;background:#1a1b1e;border-left-color:#1a1b1e}.settings-list{flex-direction:column;gap:8px;padding:12px;display:flex}.setting-row{background:var(--bg-primary);cursor:pointer;border-radius:12px;align-items:center;gap:16px;padding:16px;transition:transform .2s;display:flex}.setting-row:hover{transform:scale(1.01)}.setting-icon-box{border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.icon-blue{color:#0284c7;background:#e0f2fe}.icon-purple{color:#9333ea;background:#f3e8ff}.icon-red{color:#dc2626;background:#fee2e2}.setting-info h4{margin-bottom:2px;font-size:15px;font-weight:600}.setting-info p{color:var(--text-muted);font-size:13px}.setting-row.danger{background:#fef2f2}.setting-row.danger h4{color:#dc2626}.progress-choice-btn{background:var(--bg-primary);cursor:pointer;text-align:left;border:1px solid #00000014;border-radius:12px;flex-direction:column;align-items:flex-start;gap:4px;padding:16px;transition:all .2s;display:flex}.progress-choice-btn:hover{border-color:var(--text-primary);background:#fff}.progress-choice-info{justify-content:space-between;align-items:center;width:100%;display:flex}.progress-choice-label{color:var(--text-primary);font-size:15px;font-weight:600}.progress-choice-value{color:var(--text-primary);font-size:18px;font-weight:700}.progress-choice-hint{color:var(--text-muted);font-size:13px}