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50vw);position:relative;overflow:hidden}.era-image{object-fit:cover;object-position:center center;filter:grayscale(40%)brightness(.6)sepia(20%);will-change:transform;width:100%;height:370px;margin-top:-75px;display:block;position:absolute;top:0;left:0}.event{opacity:0;width:44%;margin-bottom:2.5rem;transition:opacity .6s,transform .6s;position:relative}.event.left{margin-left:0;margin-right:auto;transform:translate(-40px)}.event.right{margin-left:auto;margin-right:0;transform:translate(40px)}.event.visible{opacity:1;transform:translate(0)}.spine-dot{border:2px solid var(--spine);background:var(--bg);z-index:2;pointer-events:none;border-radius:50%;width:12px;height:12px;position:absolute;left:calc(50% - 6px)}.spine-dot.hidden{display:none}.event:before{content:"";z-index:1;background:#333;width:calc(13.64% - 6px);height:2px;position:absolute;top:calc(1.5rem + 5px)}.event.left:before{left:100%;right:auto}.event.right:before{left:auto;right:100%}.card{background:var(--card-bg);border:1px solid var(--card-border);cursor:pointer;border-radius:3px;padding:1.2rem 1.4rem;transition:transform .2s,box-shadow .2s,border-color .2s;position:relative}.event.machine .card{border-left:3px solid var(--machine)}.event.human .card{border-left:3px solid var(--human)}.card:hover{z-index:2;transform:scale(1.02)}.event.machine .card:hover{border-color:var(--machine);box-shadow:0 0 20px #cc22004d,0 0 40px #cc22001a}.event.human .card:hover{border-color:var(--human);box-shadow:0 0 20px #1a66cc4d,0 0 40px #1a66cc1a}.card-header{align-items:flex-start;gap:.5rem;margin-bottom:.6rem;display:flex}.card-year{display:none}.spine-year{letter-spacing:.08em;color:var(--spine);white-space:nowrap;pointer-events:none;font-family:Computer Modern,Georgia,serif;font-size:.72rem;font-weight:700;position:absolute;top:calc(1.5rem + 6px);transform:translateY(-50%)}.event.left .spine-year{left:calc(113.64% + 18px)}.event.right .spine-year{right:calc(113.64% + 18px)}.card-badges{flex-shrink:0;align-items:center;gap:.4rem;display:flex}.badge-type{letter-spacing:.1em;text-transform:uppercase;border-radius:2px;padding:.2rem .5rem;font-family:Computer Modern,Georgia,serif;font-size:.65rem;font-weight:700}.event.machine .badge-type{color:#f64;background:#c203;border:1px solid #c206}.event.human .badge-type{color:#6af;background:#1a66cc33;border:1px solid #1a66cc66}.badge-superhuman{filter:drop-shadow(0 0 4px #ffd70080);font-size:1rem;line-height:1}.card-text{color:var(--text);font-size:.92rem;line-height:1.5}.card-image-wrap{width:calc(100% + 2.8rem);height:180px;margin:.6rem -1.4rem .8rem;position:relative;overflow:hidden}.card-image-bg{object-fit:cover;object-position:center;filter:blur(16px)brightness(.45)saturate(1.2);z-index:0;width:calc(100% + 40px);height:calc(100% + 40px);position:absolute;inset:-20px}.card-image{object-fit:contain;object-position:center;filter:contrast(1.05);z-index:1;background:0 0;width:100%;height:100%;display:block;position:absolute;inset:0}.card-image-wrap.inverted .card-image{filter:invert()contrast(1.05)}.card-image-wrap.inverted .card-image-bg{filter:invert()blur(16px)brightness(.45)saturate(1.2)}.card-link{letter-spacing:.08em;text-transform:uppercase;color:#555;margin-top:.6rem;font-family:Computer Modern,Georgia,serif;font-size:.68rem;text-decoration:none;transition:color .2s;display:inline-block}.card-link:hover{color:var(--spine)}.card-expand-hint{letter-spacing:.1em;text-transform:uppercase;color:#444;margin-top:.5rem;font-family:Computer Modern,Georgia,serif;font-size:.65rem;display:block}.card-excerpt{border-top:1px solid #2a2a2a;margin-top:1rem;padding-top:1rem;animation:.3s excerptFadeIn}@keyframes excerptFadeIn{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.card-excerpt-inner{align-items:flex-start;gap:.8rem;margin-bottom:.75rem;display:flex}.card-excerpt-thumb{object-fit:cover;filter:brightness(.9)contrast(1.05);border-radius:2px;flex-shrink:0;width:80px;height:80px}.card-excerpt-text{color:var(--text-dim);font-size:.82rem;line-height:1.55}.card-excerpt-title{color:var(--text);margin-bottom:.3rem;font-size:.85rem;font-weight:700}.card-excerpt-attribution{color:#444;margin-top:.5rem;font-size:.63rem;font-style:italic}.event.hidden{display:none}@media (max-width:700px){.timeline:before{left:1.5rem}.event{width:calc(100% - 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