.deep-time{max-width:1080px;padding-top:4.5rem}.deep-time h1{max-width:920px;font-size:clamp(3.2rem,7.6vw,6.4rem)}.deep-time .lead{max-width:740px}.time-jump{display:flex;flex-wrap:wrap;gap:.8rem 1.4rem;margin:1.8rem 0 3rem;font-size:.9rem}.time-jump a{text-decoration:underline;text-underline-offset:.25em}.time-machine{border:1px solid var(--line);border-radius:1.5rem;background:var(--panel);overflow:hidden;margin:2rem 0 4rem}.journey-controls{padding:1.5rem 1.5rem 0}.journey-controls h2{font-size:1.5rem;margin:0 0 .8rem;letter-spacing:-.035em}.era-track{display:flex;overflow-x:auto;gap:.5rem;padding:.25rem .25rem 1rem;scrollbar-color:var(--accent) transparent}.era-track button,.motion-button,.journey-actions button{font:inherit;cursor:pointer;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:.65rem .9rem;border-radius:.65rem}.era-track button{flex:none;font-size:.85rem}.era-track button[aria-pressed=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}.deep-time button:focus-visible,.deep-time select:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.era-picker{display:flex;align-items:center;gap:.8rem;flex-wrap:wrap;margin:.4rem 0 1rem;font-size:.9rem}.era-picker select{font:inherit;max-width:100%;border:1px solid var(--line);border-radius:.5rem;padding:.65rem;background:var(--bg);color:var(--ink)}.landscape{margin:0;position:relative;background:#173d49;color:#effafa}.landscape svg{display:block;width:100%;height:auto;--sky-top:#163743;--sky-bottom:#84b5b2;--land:#334f55;--land-front:#1c3d45;--water:#427f90;--rain-color:#cbeced}.scene-tag{position:absolute;top:1.2rem;left:1.5rem;font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;color:#d8f3f3}.landscape figcaption{font-size:.78rem;padding:.8rem 1.5rem;color:#c0dde3;background:#163641;line-height:1.6}.scene-cloud{animation:ancient-cloud 14s ease-in-out infinite}.scene-cloud:nth-child(2){animation-delay:-6s}.scene-rain{animation:ancient-rain 1.6s linear infinite}.scene-rain:nth-child(2){animation-delay:-.8s}.scene-ripple{transform-box:fill-box;transform-origin:center;animation:ancient-ripple 3.8s ease-out infinite}.scene-ripple:nth-child(2){animation-delay:-1.5s}.scene-ripple:nth-child(3){animation-delay:-2.5s}.scene-mist{animation:ancient-mist 8s ease-in-out infinite}.landscape[data-theme=forest] svg{--sky-top:#1d4e50;--sky-bottom:#94bba5;--land:#406c5b;--land-front:#204b43;--water:#5b9b92}.landscape[data-theme=dry] svg{--sky-top:#57473e;--sky-bottom:#d8b78c;--land:#a2785e;--land-front:#795948;--water:#537f84}.landscape[data-theme=ice] svg{--sky-top:#31546e;--sky-bottom:#c4e0eb;--land:#8cbbcf;--land-front:#557f99;--water:#3d7998}.landscape[data-theme=dry] .rain-heavy{display:none}.landscape[data-paused=true] svg *{animation-play-state:paused!important}.journey-reading{padding:1.7rem 1.8rem}.era-summary h3{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.12;margin:.4rem 0 1rem;letter-spacing:-.045em}.era-date{font-size:.8rem;color:var(--accent);font-weight:750;letter-spacing:.025em}.era-summary p{max-width:720px}.era-summary a{color:var(--accent);font-weight:700;text-decoration:underline;text-underline-offset:.2em}.journey-actions{display:flex;justify-content:space-between;gap:.6rem;align-items:center;flex-wrap:wrap;padding:0 1.8rem 1.5rem}.journey-actions button{font-size:.85rem}.journey-actions button:disabled{opacity:.55;cursor:default}.journey-position{color:var(--muted);font-size:.85rem}.deep-time [hidden]{display:none!important}.story-heading{max-width:700px}.chapter{display:grid;grid-template-columns:95px 1fr;gap:1.4rem;border-top:1px solid var(--line);padding-top:2rem;margin-top:3.5rem;scroll-margin-top:2rem}.chapter .chapter-number{font-size:3rem;line-height:1;color:var(--accent);letter-spacing:-.06em;font-weight:800}.chapter h2{margin:0 0 1.1rem;font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.1}.chapter p{max-width:720px}.chapter a,.evidence a,.time-table a{color:var(--accent);text-decoration:underline;text-underline-offset:.2em}.chapter .chapter-time{color:var(--muted);font-size:.85rem}.chapter-note{border-left:3px solid var(--accent);padding:.5rem 0 .5rem 1rem;color:var(--muted);font-size:.95rem}.evidence{margin-top:4rem;padding:2rem;background:var(--panel);border:1px solid var(--line);border-radius:1.2rem}.evidence h2{margin:0 0 1rem;font-size:2rem}.evidence-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:2rem;align-items:center}.zircon{display:block;width:100%;max-width:200px;margin:auto}.evidence details{margin-top:1rem}.evidence summary{color:var(--accent)}.time-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.92rem}.time-table caption{text-align:left;color:var(--muted);margin:.8rem 0}.time-table th,.time-table td{padding:.75rem .5rem;text-align:left;border-bottom:1px solid var(--line)}.time-table thead th{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.table-note{font-size:.9rem;color:var(--muted);max-width:740px}.deep-time .sources{padding:2rem 0;margin-bottom:0}.deep-time .sources h2{margin-top:0}.deep-time .sources li{font-size:.95rem}.screen-reader-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes ancient-cloud{50%{transform:translateX(16px)}}@keyframes ancient-rain{to{transform:translate(-14px,38px)}}@keyframes ancient-ripple{0%{transform:scale(.65);opacity:.6}100%{transform:scale(1.5);opacity:0}}@keyframes ancient-mist{50%{opacity:.45;transform:translateY(-5px)}}@media(max-width:600px){.deep-time{padding-top:3rem}.journey-controls{padding:1rem 1rem 0}.journey-reading{padding:1.3rem}.journey-actions{padding:0 1.3rem 1.3rem}.chapter{grid-template-columns:1fr;gap:.7rem}.chapter .chapter-number{font-size:1.7rem}.evidence{padding:1.3rem}.evidence-grid{grid-template-columns:1fr;gap:1rem}.zircon{max-width:120px}.scene-tag{top:.8rem;left:1rem;font-size:.6rem}.landscape figcaption{padding:.8rem 1rem}.time-table{font-size:.8rem}.time-table th,.time-table td{padding:.65rem .35rem}.era-picker select{width:100%}}@media(prefers-reduced-motion:reduce){.landscape svg *{animation:none!important}}