.timeline-shell{--rail: rgba(255, 255, 255, .12);position:relative;padding:1rem 0 3rem}.era-filters{display:flex;flex-wrap:wrap;gap:.55rem;margin-bottom:1.75rem}.era-filters button{appearance:none;border:1px solid var(--line);background:#ffffff08;color:var(--muted);border-radius:999px;padding:.5rem .95rem;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;cursor:pointer;transition:.2s ease}.era-filters button.is-active,.era-filters button:hover{color:var(--ink);border-color:transparent}.era-filters button[data-era=all].is-active,.era-filters button[data-era=all]:hover{background:var(--paper)}.era-filters button[data-era=origin].is-active,.era-filters button[data-era=origin]:hover{background:var(--orange)}.era-filters button[data-era=classic].is-active,.era-filters button[data-era=classic]:hover{background:var(--cyan)}.era-filters button[data-era=winter].is-active,.era-filters button[data-era=winter]:hover{background:#8b9bb4}.era-filters button[data-era=revival].is-active,.era-filters button[data-era=revival]:hover{background:linear-gradient(90deg,var(--orange),var(--cyan))}.timeline-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,360px);gap:1.5rem;align-items:start}.timeline-track-wrap{position:relative;border:1px solid var(--line);border-radius:var(--radius);background:#00000047;overflow:hidden}.timeline-track{display:flex;gap:0;overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;touch-action:pan-x pan-y;scroll-snap-type:x mandatory;padding:2.5rem 1.5rem 2rem;scrollbar-width:thin;scrollbar-color:var(--orange) transparent}.timeline-track::-webkit-scrollbar{height:8px}.timeline-track::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--orange),var(--cyan));border-radius:999px}.timeline-rail{position:absolute;left:1.5rem;right:1.5rem;top:4.15rem;height:3px;background:linear-gradient(90deg,var(--orange),rgba(255,255,255,.15) 35%,var(--cyan));border-radius:999px;pointer-events:none;opacity:.85}.tl-node{position:relative;flex:0 0 min(78vw,280px);scroll-snap-align:center;padding:2.2rem 1rem 0;border:0;background:transparent;color:inherit;text-align:left;cursor:pointer}.tl-node:before{content:"";position:absolute;top:.95rem;left:1rem;width:16px;height:16px;border-radius:50%;background:var(--ink);border:3px solid var(--muted);box-shadow:0 0 0 6px #00000059;transition:.2s ease;z-index:1}.tl-node[data-era=origin]:before{border-color:var(--orange)}.tl-node[data-era=classic]:before{border-color:var(--cyan)}.tl-node[data-era=winter]:before{border-color:#8b9bb4}.tl-node[data-era=revival]:before{border-color:var(--good)}.tl-node.is-active:before,.tl-node:hover:before{transform:scale(1.2);box-shadow:0 0 0 8px #ff8a1f2e,0 0 24px #27d0ff59}.tl-node.is-hidden{display:none}.tl-card{padding:1rem 1.1rem 1.15rem;border-radius:14px;border:1px solid var(--line);background:#0e131bd9;min-height:150px;transition:border-color .2s ease,transform .2s ease}.tl-node.is-active .tl-card,.tl-node:hover .tl-card{border-color:#27d0ff73;transform:translateY(-3px)}.tl-card time{display:block;font-family:var(--font-mono);font-size:.75rem;color:var(--orange);margin-bottom:.45rem}.tl-card h3{font-size:1.15rem;margin:0 0 .4rem}.tl-card p{margin:0;color:var(--muted);font-size:.9rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.timeline-detail{position:sticky;top:calc(var(--nav-h) + 1rem);padding:1.5rem;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,138,31,.1),transparent 40%),#0a0e14eb;min-height:320px;overflow:hidden}.timeline-detail:after{content:"";position:absolute;inset:auto -20% -40% 20%;height:180px;background:radial-gradient(circle,rgba(39,208,255,.2),transparent 70%);pointer-events:none}.detail-era{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);margin-bottom:.75rem}.timeline-detail h2{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:.35rem}.timeline-detail .detail-date{font-family:var(--font-mono);color:var(--orange);font-size:.85rem;margin-bottom:1rem}.timeline-detail .detail-body{color:var(--muted);position:relative;z-index:1}.detail-links{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.25rem;position:relative;z-index:1}.scanlines{pointer-events:none;position:absolute;inset:0;opacity:.07;background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(255,255,255,.35) 3px);mix-blend-mode:overlay}@media(max-width:900px){.timeline-layout{grid-template-columns:1fr}.timeline-detail{position:relative;top:0}}