.history-layout{justify-content:center;align-items:flex-start;gap:40px;max-width:1400px;margin:0 auto;padding:40px 24px;display:flex}.history-layout .topic-sidebar{background:var(--card-bg);border:1px solid var(--border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);flex:0 0 240px;padding:24px;position:sticky;top:100px}.history-layout .topic-sidebar .sidebar-section{border-bottom:1px solid var(--border-subtle);margin-bottom:20px;padding-bottom:16px}.history-layout .topic-sidebar .sidebar-section:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.history-layout .topic-sidebar h3{font-family:var(--font-sans);text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:12px;font-size:.65rem;font-weight:800}.history-layout .topic-sidebar ul{padding:0;list-style:none}.history-layout .topic-sidebar li{margin-bottom:6px}.history-layout .topic-sidebar li a{color:var(--text-secondary);font-size:.82rem;font-weight:600;transition:color .15s}.history-layout .topic-sidebar li a:hover{color:var(--text-primary)}.sidebar-stat-row{justify-content:space-between;align-items:center;padding:4px 0;display:flex}.sidebar-stat-label{color:var(--text-muted);font-size:.78rem;font-weight:600}.sidebar-stat-value{color:var(--text-primary);font-family:SF Mono,Cascadia Code,Consolas,monospace;font-size:.78rem;font-weight:800}.sidebar-epoch-jump{flex-direction:column;gap:4px;display:flex}.sidebar-epoch-link{color:var(--text-secondary);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:6px;padding:4px 8px;font-size:.78rem;font-weight:600;transition:all .15s}.sidebar-epoch-link:hover{background:var(--bg-panel);color:var(--text-primary)}.history-content{flex:1;min-width:0;max-width:960px}.history-header{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:flex-end;margin-bottom:32px;padding-bottom:24px;display:flex}.topic-title{font-family:var(--font-serif);color:var(--text-primary);margin-bottom:6px;font-size:2rem;font-weight:800}.history-subtitle{font-family:var(--font-sans);color:var(--text-muted);font-size:.88rem;font-weight:500;line-height:1.6}.history-subtitle strong{color:var(--text-primary);font-weight:800}.history-filter-bar{background:var(--bg-panel);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);z-index:20;align-items:center;gap:6px;margin-bottom:28px;padding:6px;display:flex;position:sticky;top:84px}.filter-btn{color:var(--text-muted);font-family:var(--font-sans);letter-spacing:.03em;text-transform:uppercase;cursor:pointer;background:0 0;border:none;border-radius:6px;padding:7px 16px;font-size:.75rem;font-weight:700;transition:all .15s}.filter-btn:hover{color:var(--text-primary);background:var(--bg-surface)}.filter-btn.active{background:var(--bg-surface);color:var(--text-primary);box-shadow:var(--shadow-sm)}.filter-count{opacity:.5;margin-left:4px;font-family:SF Mono,Cascadia Code,monospace;font-size:.6rem;font-weight:800}.compare-mode-bar{background:var(--bg-panel);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);justify-content:space-between;align-items:center;margin-bottom:20px;padding:10px 16px;display:flex}.compare-mode-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:.75rem;font-weight:700}.compare-mode-actions{align-items:center;gap:8px;display:flex}.compare-mode-toggle{border:1px solid var(--border-subtle);color:var(--text-muted);font-family:var(--font-sans);cursor:pointer;background:0 0;border-radius:6px;padding:6px 14px;font-size:.72rem;font-weight:700;transition:all .15s}.compare-mode-toggle:hover{border-color:var(--text-muted);color:var(--text-primary)}.compare-mode-toggle.active{background:var(--text-heading);color:var(--bg-base);border-color:var(--text-heading)}.history-timeline{padding-left:28px;position:relative}.history-timeline:before{content:"";background:var(--border-subtle);width:1px;position:absolute;top:0;bottom:0;left:6px}.epoch-section{margin-bottom:8px;position:relative}.epoch-header{cursor:pointer;-webkit-user-select:none;user-select:none;width:100%;color:inherit;font:inherit;text-align:left;background:0 0;border:0;align-items:center;gap:12px;padding:12px 0;display:flex;position:relative}.epoch-header:focus-visible{outline:2px solid var(--color-gold);outline-offset:4px;border-radius:8px}.epoch-header:before{content:"";background:var(--text-muted);border:2px solid var(--bg-base);z-index:1;border-radius:50%;width:9px;height:9px;position:absolute;top:50%;left:-24px;transform:translateY(-50%)}.epoch-title{font-family:var(--font-serif);color:var(--text-primary);font-size:1rem;font-weight:800}.epoch-meta{font-family:var(--font-sans);color:var(--text-muted);align-items:center;gap:8px;font-size:.72rem;font-weight:600;display:flex}.epoch-meta-dot{background:var(--text-muted);opacity:.5;border-radius:50%;width:3px;height:3px}.epoch-chevron{color:var(--text-muted);margin-left:auto;font-size:.7rem;transition:transform .2s}.epoch-chevron.collapsed{transform:rotate(-90deg)}.epoch-body{transition:max-height .3s,opacity .2s;overflow:hidden}.epoch-body.collapsed{opacity:0;pointer-events:none;max-height:0}.epoch-body.expanded{opacity:1;max-height:none}.revisions-list{flex-direction:column;gap:2px;display:flex}.revision-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:20px 24px;transition:background .15s,box-shadow .15s;position:relative}.revision-card:hover{box-shadow:var(--shadow-sm)}.revision-card:before{content:"";background:var(--border-subtle);border:1.5px solid var(--bg-panel);z-index:1;border-radius:50%;width:7px;height:7px;position:absolute;top:24px;left:-25px}.revision-card.sig-foundational{border-left:3px solid var(--color-gold);background:var(--bg-surface);padding:24px 28px}.revision-card.sig-foundational:before{background:var(--color-gold);border-color:var(--bg-base);width:9px;height:9px}.foundational-badge{text-transform:uppercase;letter-spacing:.08em;color:var(--color-gold);background:var(--color-gold-soft);border:1px solid #b8963e26;border-radius:4px;align-items:center;gap:5px;margin-bottom:8px;padding:3px 10px;font-size:.58rem;font-weight:800;display:inline-flex}.revision-card.sig-substantial{border-left:3px solid 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24px}.revision-card.sig-minor:before{background:var(--border-subtle);width:5px;height:5px}.revision-card.sig-minor:hover{background:var(--bg-surface);border-color:var(--border-subtle)}.rev-card-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:4px;display:flex}.rev-card-header-left{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.rev-card-header-right{align-items:center;gap:8px;display:flex}.timestamp{font-family:var(--font-sans);color:var(--text-muted);letter-spacing:.02em;font-size:.78rem;font-weight:600}.rev-id-badge{color:var(--text-muted);background:var(--bg-panel);border:1px solid var(--border-subtle);letter-spacing:.04em;cursor:default;-webkit-user-select:all;user-select:all;border-radius:4px;padding:2px 7px;font-family:SF Mono,Cascadia Code,Consolas,monospace;font-size:.65rem;font-weight:700;transition:all .15s}.rev-id-badge:hover{color:var(--color-gold);border-color:var(--color-gold);background:var(--color-gold-soft)}.status-badge{text-transform:uppercase;letter-spacing:.06em;border-radius:4px;align-items:center;gap:3px;padding:2px 8px;font-size:.58rem;font-weight:800;display:inline-flex}.status-badge.revert{color:#f59e0b;background:#f59e0b1a;border:1px solid #f59e0b33}.status-badge.reverted{color:#ef4444;background:#ef44441a;border:1px solid #ef444433}.status-badge.flagged{color:var(--color-gold);background:#c5a0591a;border:1px solid #c5a05933}.revision-card.is-reverted{opacity:.5}.revision-card.is-reverted:hover{opacity:.75}.revision-card.is-revert{background:#f59e0b05;border-left:3px solid #f59e0b!important}.rev-thesis{font-family:var(--font-serif);color:var(--text-primary);margin:8px 0;font-size:1.05rem;font-weight:700;line-height:1.4}.sig-foundational .rev-thesis{font-size:1.12rem}.rev-commit{font-family:var(--font-serif);color:var(--text-primary);margin:6px 0;font-size:.95rem;font-weight:600;line-height:1.4}.sig-minor .rev-commit{color:var(--text-secondary);margin:0;font-size:.85rem;font-weight:600}.rev-semantic-chips{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.semantic-chip{font-family:var(--font-sans);color:var(--text-secondary);background:var(--bg-panel);border:1px solid var(--border-subtle);border-radius:100px;align-items:center;gap:4px;padding:3px 10px;font-size:.68rem;font-weight:600;display:inline-flex}.semantic-chip-label{text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin-right:2px;font-size:.6rem;font-weight:800}.chip-type{color:var(--primary);background:#2563eb0d;border-color:#2563eb1a}.chip-scope{color:#8b5cf6;background:#8b5cf60d;border-color:#8b5cf61a}.rev-author-line{align-items:center;gap:8px;margin-top:10px;display:flex}.author-avatar-sm{background:var(--color-gold-soft);width:24px;height:24px;color:var(--color-gold);border:1px solid #b8963e26;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:.65rem;font-weight:800;display:flex}.author-name-link{color:var(--text-primary);font-size:.8rem;font-weight:700;transition:color .15s}.author-name-link:hover{color:var(--color-gold)}.role-badge-sm{text-transform:uppercase;letter-spacing:.04em;border:1px solid;border-radius:3px;padding:1px 5px;font-size:.52rem;font-weight:800}.rep-count-sm{color:var(--text-muted);font-family:SF Mono,Cascadia Code,monospace;font-size:.6rem;font-weight:600}.social-counts-sm{color:var(--text-muted);gap:6px;margin-left:auto;font-size:.68rem;display:flex}.social-counts-sm span{opacity:.7}.rev-card-footer{border-top:1px solid var(--border-subtle);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:12px;padding-top:10px;display:flex}.rev-compare-actions{gap:6px;display:flex}.compare-cta{font-family:var(--font-sans);color:var(--text-muted);border:1px solid 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24px}.history-continuation-label{text-transform:uppercase;letter-spacing:.12em;color:var(--color-gold);margin-bottom:6px;font-size:.62rem;font-weight:800;display:block}.history-continuation h2{font-family:var(--font-serif);color:var(--text-primary);margin:0 0 8px;font-size:1.25rem;line-height:1.25}.history-continuation p{max-width:680px;font-family:var(--font-serif);color:var(--text-secondary);margin:0 0 14px;font-size:.95rem;line-height:1.65}.history-continuation-link{border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text-primary);border-radius:8px;padding:8px 14px;font-size:.75rem;font-weight:700;text-decoration:none;transition:border-color .18s,color .18s;display:inline-flex}.history-continuation-link:hover{border-color:var(--color-gold);color:var(--color-gold)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.revision-card{animation:.2s fadeIn}@media (max-width:900px){.history-layout{flex-direction:column;align-items:stretch;gap:24px;padding:16px}.history-layout .topic-sidebar{flex:none;position:static}.history-header{flex-direction:column;align-items:flex-start;gap:16px}.history-timeline{padding-left:20px}.history-timeline:before{left:4px}.revision-card:before,.epoch-header:before,.minor-group-toggle:before{left:-18px}.revision-card{padding:16px}.rev-card-footer{flex-direction:column;align-items:flex-start}.rev-compare-actions{width:100%}.compare-cta{flex:1;justify-content:center}.history-filter-bar{flex-wrap:wrap;top:78px}}