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.feature-learn-more{text-decoration:underline}.welcome-footer{text-align:center;padding-top:20px;border-top:1px solid var(--border-color)}.welcome-footer-shortcuts{margin:0 0 12px;font-size:1rem;color:var(--text-secondary)}.welcome-footer kbd{display:inline-block;padding:4px 10px;font-size:.9rem;font-family:inherit;background:var(--toolbar-bg);border:1px solid var(--border-color);border-radius:4px;color:var(--text-color);margin:0 2px}.welcome-footer-links{display:flex;justify-content:center;gap:24px}.footer-link{background:none;border:none;padding:0;font-size:.9rem;color:var(--text-secondary);cursor:pointer;transition:color .15s ease}.footer-link:hover{color:var(--accent-color);text-decoration:underline}@media(max-width:700px){.welcome-screen{padding:40px 16px}.welcome-header h1{font-size:2rem}.welcome-subtitle{font-size:1rem}.features-grid{grid-template-columns:repeat(2,1fr)}.security-banner{flex-direction:column;text-align:center;align-items:center}.security-icon{margin-bottom:4px}}@media(max-width:480px){.features-grid{grid-template-columns:1fr}.welcome-btn{width:100%;justify-content:center}}[data-theme=dark] .security-banner{background:linear-gradient(135deg,#10b9811f,#10b9810f);border-color:#10b98140}[data-theme=dark] .security-icon{background:#10b98133}[data-theme=dark] .feature-card:hover{box-shadow:0 4px 16px #0003}.feature-modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;animation:modalFadeIn .15s ease}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}.feature-modal{background:var(--toolbar-bg);border-radius:16px;max-width:560px;width:100%;max-height:85vh;overflow-y:auto;padding:32px;position:relative;box-shadow:0 20px 60px #0000004d;animation:modalScaleIn 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var(--border-color);margin-top:8px;padding-top:14px}.history-item.current-state{background:var(--success-bg);border-left:3px solid var(--success-color);font-weight:500}.history-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-size:14px;background:var(--hover-bg);border-radius:4px;flex-shrink:0;color:var(--text-color)}.history-content{flex:1;min-width:0}.history-description{display:block;font-size:13px;line-height:1.4;word-break:break-word}.history-time{display:block;font-size:11px;color:var(--text-secondary);margin-top:2px}.history-current-marker{color:var(--accent-color);font-size:12px;flex-shrink:0}.history-panel-footer{padding:12px 16px;border-top:1px solid var(--border-color);background:var(--sidebar-bg);font-size:12px;color:var(--text-secondary)}.history-count{display:block}@media(max-width:480px){.history-panel{width:100%;max-width:100%}}.search-panel{position:fixed;top:90px;right:20px;width:320px;background:var(--panel-bg, #fff);border:1px 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button:hover{background:var(--hover-bg)}.search-results-list{flex:1;overflow-y:auto;padding:8px}.search-result-page{margin-bottom:12px}.search-result-page-header{font-size:12px;font-weight:600;color:var(--text-secondary);margin-bottom:4px;padding:4px 8px;background:var(--hover-bg);border-radius:4px}.search-result-item{display:block;width:100%;text-align:left;padding:6px 8px;border:none;background:transparent;cursor:pointer;font-size:13px;color:var(--text-color);border-radius:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.search-result-item:hover{background:var(--accent-color-light)}.search-result-more{font-size:11px;color:var(--text-secondary);padding:4px 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strong{color:var(--accent-color)}.preview-pages{display:block;margin-top:8px;font-family:monospace;font-size:13px;color:var(--text-secondary);word-break:break-all}.split-preview{margin-top:12px;display:flex;flex-direction:column;gap:8px}.split-part{display:flex;align-items:center;gap:8px;padding:8px;background:var(--panel-bg, #fff);border-radius:4px;font-size:13px}.part-label{font-weight:600;min-width:60px}.part-pages{flex:1}.part-count{color:var(--text-secondary);font-size:12px}.dialog-error{margin-top:16px;padding:12px;background:var(--error-bg);border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-sm);color:var(--error-color);font-size:13px}.dialog-footer{display:flex;justify-content:flex-end;gap:12px;padding:16px 24px;border-top:1px solid var(--border-color)}.dialog-btn{padding:10px 20px;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:all 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