*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root,[data-theme=dark]{--bg: #0F172A;--bg-surface: #1E293B;--bg-elevated: #334155;--text: #F1F5F9;--text-muted: #94A3B8;--accent: #818CF8;--accent-glow: rgba(129, 140, 248, .3);--header-grad-start: rgba(15, 23, 42, 1);--header-grad-end: rgba(15, 23, 42, 0);--border-subtle: rgba(255, 255, 255, .08);--shadow-heavy: rgba(0, 0, 0, .5);--shadow-tooltip: rgba(0, 0, 0, .4);--minimap-border: rgba(255, 255, 255, .06)}[data-theme=light]{--bg: #F8FAFC;--bg-surface: #E2E8F0;--bg-elevated: #CBD5E1;--text: #0F172A;--text-muted: #475569;--accent: #6366F1;--accent-glow: rgba(99, 102, 241, .2);--header-grad-start: rgba(248, 250, 252, 1);--header-grad-end: rgba(248, 250, 252, 0);--border-subtle: rgba(0, 0, 0, .1);--shadow-heavy: rgba(0, 0, 0, .15);--shadow-tooltip: rgba(0, 0, 0, .12);--minimap-border: rgba(0, 0, 0, .08)}html,body{height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}#app{display:flex;flex-direction:column;height:100vh}#header{text-align:center;padding:20px 20px 8px;background:linear-gradient(180deg,var(--header-grad-start) 0%,var(--header-grad-end) 100%);position:relative;z-index:10}#header .header-brand{display:block}#header h1{font-family:Playfair Display,Georgia,serif;font-size:2rem;font-weight:700;background:linear-gradient(135deg,#818cf8,#c084fc,#f472b6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}#header .title-short{display:none}#header .subtitle{font-size:.85rem;color:var(--text-muted);margin-top:4px;font-weight:300;letter-spacing:.05em}#header .active-view-label{display:inline-flex;align-items:center;gap:6px;margin-top:10px;padding:4px 12px;border-radius:999px;border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text);font-size:.8rem;font-weight:500;letter-spacing:.02em;line-height:1.3;max-width:min(100%,520px)}#header .active-view-label:before{content:"Viewing";color:var(--text-muted);font-weight:400;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em}#header .active-view-parent{color:var(--text-muted);font-weight:500}#header .active-view-sep{color:var(--text-muted);opacity:.7;font-weight:400;padding:0 1px}#header .active-view-child{color:var(--text);font-weight:600}#controls{display:flex;align-items:center;gap:12px;padding:8px 20px 12px;overflow:visible;z-index:10}.view-select{flex-shrink:0;padding:6px 28px 6px 12px;border:1px solid var(--bg-elevated);background:var(--bg-surface);color:var(--text);border-radius:8px;font-size:.8rem;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer;transition:all .15s ease;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' stroke='%2394A3B8' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center}.view-select:hover{border-color:var(--accent);background-color:var(--bg-elevated)}.view-select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}.view-select option{background:var(--bg-surface);color:var(--text)}.zoom-controls{display:flex;gap:4px;flex-shrink:0}.zoom-controls button{width:36px;height:36px;border:1px solid var(--bg-elevated);background:var(--bg-surface);color:var(--text);border-radius:8px;font-size:1rem;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center}.zoom-controls button:hover{background:var(--bg-elevated);border-color:var(--accent)}.thumb-bar{display:flex;align-items:center;gap:12px;flex-shrink:0}#era-nav{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}#era-nav::-webkit-scrollbar{display:none}.era-btn{flex-shrink:0;padding:6px 12px;border:1px solid var(--bg-elevated);background:var(--bg-surface);color:var(--text-muted);border-radius:20px;font-size:.75rem;font-weight:500;cursor:pointer;transition:all .15s ease;white-space:nowrap}.era-btn:hover{background:var(--era-color, var(--accent));color:#fff;border-color:var(--era-color, var(--accent))}.timeline-search-wrap{position:relative;flex:0 1 260px;min-width:180px;z-index:20}.timeline-search{width:100%;padding:8px 12px;border:1px solid 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4px;color:var(--text-muted);font-size:.8rem}.compare-wrap{position:relative;flex-shrink:0;z-index:20}.compare-toggle{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border:1px solid var(--bg-elevated);background:var(--bg-surface);color:var(--text);border-radius:10px;font-size:.82rem;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer;transition:all .15s ease;white-space:nowrap}.compare-toggle:hover{border-color:var(--accent);background:var(--bg-elevated)}.compare-toggle:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}.compare-toggle.is-active{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,var(--bg-surface))}.compare-bar{display:flex;align-items:center;gap:10px;padding:0 20px 10px;z-index:10;flex-wrap:wrap}.compare-bar.hidden{display:none}.compare-field{display:inline-flex;align-items:center;gap:6px;min-width:0}.compare-field-label{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:6px;background:var(--accent);color:#fff;font-size:.72rem;font-weight:700;flex-shrink:0}.compare-select{min-width:0;max-width:220px;padding:6px 28px 6px 10px;border:1px solid var(--bg-elevated);background:var(--bg-surface);color:var(--text);border-radius:10px;font-size:.82rem;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer}.compare-select:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}.compare-vs{color:var(--text-muted);font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em}.compare-exit{margin-left:auto;padding:6px 12px;border:1px solid var(--bg-elevated);background:transparent;color:var(--text-muted);border-radius:10px;font-size:.78rem;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer;transition:all .15s ease}.compare-exit:hover{color:var(--text);border-color:var(--accent);background:var(--bg-surface)}body.compare-active #view-select{opacity:.45;pointer-events:none}body.compare-active .filters-toggle,body.compare-active .bookmarks-toggle{opacity:.45}.bookmarks-wrap{position:relative;flex-shrink:0;z-index:20}.bookmarks-toggle{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border:1px solid var(--bg-elevated);background:var(--bg-surface);color:var(--text);border-radius:10px;font-size:.82rem;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer;transition:all .15s 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12px;border:0;background:transparent;color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;text-align:left;cursor:pointer}.bookmarks-item-open:hover{background:color-mix(in srgb,var(--accent) 10%,transparent)}.bookmarks-item-open:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--accent-glow)}.bookmarks-item-title{font-size:.86rem;font-weight:600;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.bookmarks-item-meta{font-size:.72rem;color:var(--text-muted);line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.bookmarks-item-remove{flex-shrink:0;width:40px;border:0;border-left:1px solid var(--bg-elevated);background:transparent;color:var(--text-muted);font-size:1.2rem;cursor:pointer}.bookmarks-item-remove:hover{background:var(--bg-elevated);color:var(--text)}.bookmarks-actions{display:flex;justify-content:flex-end;margin-top:12px}.bookmarks-clear{border:0;background:transparent;color:var(--accent);font-size:.78rem;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer;padding:6px 4px}.bookmarks-clear:hover:not(:disabled){text-decoration:underline}.bookmarks-clear:disabled{opacity:.4;cursor:not-allowed}.detail-actions{margin-top:14px;display:flex;gap:8px}.detail-bookmark{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border:1px solid var(--bg-elevated);border-radius:10px;background:var(--bg);color:var(--text);font-size:.82rem;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer;transition:all .15s ease}.detail-bookmark:hover:not(:disabled){border-color:var(--accent);background:var(--bg-elevated)}.detail-bookmark:focus-visible{outline:none;box-shadow:0 0 0 2px var(--accent-glow)}.detail-bookmark:disabled{opacity:.45;cursor:not-allowed}.detail-bookmark.is-bookmarked{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,var(--bg-surface));color:var(--text)}.detail-bookmark-icon{font-size:1rem;line-height:1;color:var(--accent)}#theme-toggle{width:36px;height:36px;border:1px solid var(--bg-elevated);background:var(--bg-surface);color:var(--text);border-radius:8px;font-size:1.1rem;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center;flex-shrink:0}#theme-toggle:hover{background:var(--bg-elevated);border-color:var(--accent)}#timeline-container{flex:1;position:relative;min-height:0;overflow:hidden}#timeline-canvas{display:block;width:100%;height:100%}.tooltip{position:absolute;pointer-events:none;background:var(--bg-elevated);color:var(--text);padding:8px 12px;border-radius:8px;font-size:.8rem;line-height:1.4;box-shadow:0 8px 32px var(--shadow-tooltip);border:1px solid var(--border-subtle);opacity:0;transform:translateY(4px);transition:opacity .15s ease,transform .15s ease;z-index:100;max-width:240px}.tooltip.visible{opacity:1;transform:translateY(0)}.gesture-hint{position:absolute;left:50%;bottom:14px;transform:translate(-50%);z-index:120;display:flex;align-items:center;gap:10px;max-width:min(520px,calc(100% - 28px));padding:10px 12px 10px 14px;border:1px solid var(--border-subtle);border-radius:999px;background:color-mix(in srgb,var(--bg-surface) 92%,transparent);color:var(--text);box-shadow:0 12px 36px var(--shadow-tooltip);font-size:.82rem;line-height:1.35;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.gesture-hint.hidden{display:none}.gesture-hint button{flex-shrink:0;width:28px;height:28px;border:0;border-radius:999px;background:var(--bg-elevated);color:var(--text-muted);font-size:1.1rem;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer}.gesture-hint button:hover,.gesture-hint button:focus-visible{color:var(--text);outline:2px solid var(--accent-glow)}.event-detail{position:fixed;bottom:80px;left:50%;transform:translate(-50%);background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:16px;padding:24px 28px;max-width:480px;width:calc(100% - 40px);box-shadow:0 20px 60px var(--shadow-heavy);z-index:200;animation:slideUp .3s ease}.sheet-handle,.event-detail.hidden{display:none}@keyframes slideUp{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes mobileSheetUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.event-detail h2{font-family:Playfair Display,Georgia,serif;font-size:1.3rem;margin-bottom:4px}.event-detail #detail-date{color:var(--accent);font-size:.85rem;font-weight:500;margin-bottom:12px}.event-detail #detail-description{color:var(--text-muted);font-size:.9rem;line-height:1.6}.detail-sources{margin-top:16px;padding-top:14px;border-top:1px solid var(--border-subtle)}.detail-sources.hidden,.detail-sources[hidden]{display:none}.detail-sources-heading{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);margin-bottom:8px}.detail-sources-list{list-style:none;display:flex;flex-direction:column;gap:6px;margin:0;padding:0}.detail-sources-list a{display:inline-flex;align-items:center;gap:6px;color:var(--accent);text-decoration:none;font-size:.84rem;font-weight:500;line-height:1.35;border-radius:6px;padding:2px 0;transition:color .15s ease,opacity .15s ease}.detail-sources-list a:after{content:"↗";font-size:.72rem;opacity:.7}.detail-sources-list a:hover,.detail-sources-list a:focus-visible{text-decoration:underline;outline:none}.detail-related{margin-top:14px;padding-top:12px;border-top:1px solid color-mix(in srgb,var(--text) 12%,transparent)}.detail-related.hidden,.detail-related[hidden]{display:none}.detail-related-heading{margin:0 0 8px;font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted)}.detail-related-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.detail-related-link{display:inline-flex;align-items:baseline;gap:6px;flex-wrap:wrap;width:100%;text-align:left;padding:8px 10px;border-radius:8px;border:1px solid color-mix(in 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