.human-history-root .kb-page{max-width:1400px;margin:0 auto;padding:100px 24px 80px}.human-history-root .kb-header{text-align:center;margin-bottom:40px}.human-history-root .kb-header-label{font-family:var(--mono);color:var(--gold);letter-spacing:.18em;text-transform:uppercase;margin-bottom:8px;font-size:.65rem}.human-history-root .kb-header-title{font-family:var(--serif);color:var(--parchment);margin:0 0 12px;font-size:2rem;font-weight:700}.human-history-root .kb-header-desc{color:var(--parchment-dim);margin:0;font-size:.92rem}.human-history-root .kb-stats{flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:48px;display:flex}.human-history-root .kb-stat{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);border-left:3px solid;align-items:center;gap:6px;padding:8px 14px;font-size:.78rem;transition:border-color .2s;display:flex}.human-history-root .kb-stat:hover{border-color:var(--border-hover)}.human-history-root .kb-stat-icon{font-size:1rem}.human-history-root .kb-stat-count{font-family:var(--mono);color:var(--gold);font-weight:600}.human-history-root .kb-stat-label{color:var(--parchment-dim);font-size:.72rem}.human-history-root .kb-era-section{margin-bottom:48px}.human-history-root .kb-era-head{border-bottom:1px solid var(--border-soft);align-items:center;gap:10px;margin-bottom:16px;padding-bottom:10px;display:flex}.human-history-root .kb-era-icon{font-size:1.2rem}.human-history-root .kb-era-title{font-family:var(--serif);margin:0;font-size:1.3rem;font-weight:700}.human-history-root .kb-era-count{font-family:var(--mono);color:var(--parchment-mute);letter-spacing:.06em;margin-left:auto;font-size:.65rem}.human-history-root .kb-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;display:grid}.human-history-root .kb-card{text-align:left;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);color:var(--parchment);transition:all .25s var(--ease-out);cursor:pointer;flex-direction:column;padding:18px 20px;text-decoration:none;display:flex}.human-history-root .kb-card:hover{border-color:var(--border-hover);background:var(--bg-card-hover);box-shadow:var(--shadow-hover);transform:translateY(-2px)}.human-history-root .kb-card-top{align-items:center;gap:8px;margin-bottom:8px;display:flex}.human-history-root .kb-card-category{border:1px solid color-mix(in oklab,var(--accent,var(--gold))40%,transparent);color:var(--accent,var(--gold));font-size:.62rem;font-family:var(--mono);letter-spacing:.04em;border-radius:99px;padding:2px 8px}.human-history-root .kb-card-period{font-family:var(--mono);color:var(--parchment-mute);margin-left:auto;font-size:.62rem}.human-history-root .kb-card-title{font-family:var(--serif);color:var(--parchment);margin:0 0 8px;font-size:1.05rem;font-weight:700;line-height:1.4}.human-history-root .kb-card-excerpt{color:var(--parchment-dim);-webkit-line-clamp:3;-webkit-box-orient:vertical;flex:1;margin:0 0 10px;font-size:.78rem;line-height:1.7;display:-webkit-box;overflow:hidden}.human-history-root .kb-card-tags{flex-wrap:wrap;gap:4px;margin-top:auto;display:flex}.human-history-root .kb-card-tag{background:var(--bg-elev);color:var(--parchment-mute);font-size:.6rem;font-family:var(--sans);border-radius:4px;padding:2px 6px}.human-history-root .kb-detail-page{max-width:820px;margin:0 auto;padding:100px 24px 80px}.human-history-root .kb-detail-nav{justify-content:space-between;align-items:center;margin-bottom:32px;display:flex}.human-history-root .kb-back-link{color:var(--gold);font-size:.82rem;text-decoration:none;transition:opacity .2s}.human-history-root .kb-back-link:hover{opacity:.75}.human-history-root .kb-detail-breadcrumb{color:var(--parchment-mute);font-size:.72rem;font-family:var(--mono);letter-spacing:.04em}.human-history-root .kb-detail-article{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);overflow:hidden}.human-history-root .kb-detail-header{border-bottom:1px solid var(--border-soft);padding:36px 36px 24px}.human-history-root .kb-detail-era{font-size:.65rem;font-family:var(--mono);letter-spacing:.06em;border:1px solid;border-radius:99px;margin-bottom:12px;padding:3px 10px;display:inline-block}.human-history-root .kb-detail-title{font-family:var(--serif);color:var(--parchment);margin:0 0 8px;font-size:1.8rem;font-weight:700;line-height:1.35}.human-history-root .kb-detail-period{font-family:var(--mono);color:var(--parchment-dim);margin:0 0 12px;font-size:.78rem}.human-history-root .kb-detail-tags{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.human-history-root .kb-detail-tag{background:var(--bg-elev);color:var(--parchment-mute);font-size:.65rem;font-family:var(--sans);border-radius:4px;padding:3px 8px}.human-history-root .kb-detail-body{padding:28px 36px 36px;line-height:1.85}.human-history-root .kb-detail-body h2{font-family:var(--serif);color:var(--gold);border-bottom:1px solid var(--border-soft);margin:36px 0 14px;padding-bottom:6px;font-size:1.25rem;font-weight:700}.human-history-root .kb-detail-body h2:first-child{margin-top:0}.human-history-root .kb-detail-body h3{font-family:var(--serif);color:var(--parchment);margin:28px 0 10px;font-size:1.08rem;font-weight:700}.human-history-root .kb-detail-body h4{font-family:var(--serif);color:var(--parchment);margin:22px 0 8px;font-size:.95rem;font-weight:600}.human-history-root .kb-detail-body p{color:var(--parchment-dim);text-indent:2em;margin:0 0 14px;font-size:.92rem;line-height:1.95}.human-history-root .kb-detail-body strong{color:var(--parchment);font-weight:600}.human-history-root .kb-detail-body blockquote{border-left:3px solid var(--gold);border-radius:0 var(--radius)var(--radius)0;background:linear-gradient(135deg,rgba(200,169,81,.05),transparent);margin:20px 0;padding:14px 20px}.human-history-root .kb-detail-body blockquote p{font-family:var(--serif);color:var(--gold);text-indent:0;margin-bottom:6px;font-style:italic}.human-history-root .kb-detail-body blockquote p:last-child{margin-bottom:0}.kb-detail-body ul,.human-history-root .kb-detail-body ol{color:var(--parchment-dim);margin:10px 0 16px 24px;font-size:.9rem;line-height:1.85}.human-history-root .kb-detail-body li{margin-bottom:4px}.human-history-root .kb-detail-body li strong{color:var(--parchment)}.human-history-root .kb-detail-body hr{background:linear-gradient(to right,transparent,var(--border),transparent);border:none;height:1px;margin:32px 0}.human-history-root .kb-detail-body table{border-collapse:collapse;width:100%;margin:16px 0;font-size:.85rem}.human-history-root .kb-detail-body th{text-align:left;border-bottom:2px solid var(--border);color:var(--parchment);font-weight:600;font-family:var(--serif);padding:8px 12px}.human-history-root .kb-detail-body td{border-bottom:1px solid var(--border-soft);color:var(--parchment-dim);padding:8px 12px}.human-history-root .kb-detail-footer{text-align:center;margin-top:32px}.human-history-root .kb-back-bottom{color:var(--gold);border:1px solid color-mix(in oklab,var(--gold)30%,transparent);border-radius:99px;align-items:center;gap:4px;padding:8px 20px;font-size:.82rem;text-decoration:none;transition:all .2s;display:inline-flex}.human-history-root .kb-back-bottom:hover{background:color-mix(in oklab,var(--gold)10%,transparent);border-color:var(--gold)}@media (max-width:720px){.human-history-root .kb-page{padding:80px 16px 60px}.human-history-root .kb-header-title{font-size:1.5rem}.human-history-root .kb-grid{grid-template-columns:1fr}.human-history-root .kb-detail-page{padding:80px 16px 60px}.human-history-root .kb-detail-header{padding:24px 20px 18px}.human-history-root .kb-detail-title{font-size:1.35rem}.human-history-root .kb-detail-body{padding:20px 20px 24px}.human-history-root .kb-detail-body p{text-indent:0}.human-history-root .kb-stats{gap:6px}.human-history-root .kb-stat{padding:6px 10px;font-size:.7rem}}