.equation-layout{grid-template-columns:250px minmax(0,1fr);align-items:start}.equation-list{max-height:64vh}.equation-box{position:sticky;top:96px;min-height:540px;padding:clamp(1.3rem,3vw,2.2rem)}.equation-box h2{max-width:24ch;font:500 clamp(1.8rem,3.5vw,3rem)/1.08 Georgia,serif}.equation-box #eqMeaning{max-width:90ch;font-size:1rem;line-height:1.8}.equation-box .latex{min-height:170px;display:grid;place-items:center;padding:clamp(1.2rem,3vw,2.4rem);border:1px solid rgba(103,212,255,.25);background:radial-gradient(circle at 50% 0,rgba(103,212,255,.11),transparent 68%),rgba(0,0,0,.3);box-shadow:inset 0 0 45px rgba(103,212,255,.03)}.equation-id-select{flex:0 1 300px}.equation-nav-buttons{display:flex;gap:.45rem}.equation-nav-buttons button{padding:.55rem .75rem;border:1px solid var(--line);border-radius:.6rem;background:transparent;color:var(--text);cursor:pointer}.graph-shell{grid-template-columns:minmax(0,1fr) 370px}.graph-inspector{padding:24px}.graph-inspector p{font-size:.96rem;line-height:1.75}.graph-inspector .mathline{padding:1rem;border:1px solid rgba(103,212,255,.22);border-radius:.75rem;background:rgba(0,0,0,.24);font-size:.92rem;line-height:1.6}.chronology-scale{margin:1rem 0 1.4rem;padding:1rem;border:1px solid var(--line);border-radius:1rem;background:rgba(8,18,31,.72);overflow-x:auto}.chronology-scale-inner{position:relative;min-width:1050px;height:150px}.chronology-axis{position:absolute;left:20px;right:20px;top:76px;height:2px;background:linear-gradient(90deg,rgba(103,212,255,.3),rgba(192,132,252,.65))}.chronology-tick{position:absolute;top:51px;width:1px;height:51px;background:rgba(180,205,235,.25)}.chronology-tick span{position:absolute;top:54px;left:50%;transform:translateX(-50%);white-space:nowrap;color:var(--muted-2);font-size:.68rem}.chronology-point{position:absolute;top:66px;width:18px;height:18px;transform:translateX(-50%);border:3px solid #07111f;border-radius:50%;background:var(--accent);cursor:pointer}.chronology-point::before{content:"";position:absolute;left:50%;bottom:15px;width:1px;height:28px;background:rgba(103,212,255,.35)}.chronology-point-label{position:absolute;bottom:102px;transform:translateX(-50%);width:145px;color:var(--muted);font-size:.66rem;line-height:1.2;text-align:center;pointer-events:none}.chronology-range{display:flex;justify-content:space-between;gap:1rem;margin-top:.35rem;color:var(--muted-2);font-size:.72rem}.chronology-scale-title{display:flex;justify-content:space-between;gap:1rem;align-items:center;margin-bottom:.5rem}.chronology-scale-title strong{font:500 1.2rem Georgia,serif}.chronology-scale-title span{color:var(--muted-2);font-size:.75rem}@media(max-width:980px){.graph-shell{grid-template-columns:1fr}.equation-box{position:static}.equation-layout{grid-template-columns:1fr}.equation-list{max-height:380px}}