:root{--r-xs: 4px;--rail-fill: var(--brick, #823c23)}body[data-palette=twilight]{--rail-fill: #feb260}body[data-palette=sunrise]{--rail-fill: #c5571f}.side-controls{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:9999;display:flex;flex-direction:column;align-items:stretch;gap:10px;opacity:.35;pointer-events:auto;transition:opacity .4s var(--ease)}.side-controls.is-ui-visible{opacity:.75}.side-controls:hover,.side-controls.is-ui-visible:hover{opacity:1}.rail{display:flex;flex-direction:column;align-items:center;padding:14px 8px 12px;background:var(--bg);border:1px solid var(--hairline);border-radius:var(--r-md)}.rail-title{font-family:var(--mono);font-size:8px;letter-spacing:.22em;text-transform:uppercase;color:var(--fg-faint);margin-bottom:10px}.rail-track{position:relative;width:1px;height:320px;background:repeating-linear-gradient(to bottom,var(--hairline) 0 4px,transparent 4px 9px)}.rail-fill{position:absolute;top:0;left:-1px;width:3px;background:var(--rail-fill);height:0%;transition:height .24s var(--ease)}.rail-climber{position:absolute;left:50%;top:0;transform:translate(-50%,-50%);width:14px;height:14px;background:var(--bg);border:1.5px solid var(--rail-fill);border-radius:999px;z-index:3;transition:top .24s var(--ease);box-shadow:0 0 0 4px color-mix(in srgb,var(--bg) 80%,transparent)}.rail-climber:after{content:"";position:absolute;top:3px;right:3px;bottom:3px;left:3px;background:var(--rail-fill);border-radius:999px}.rail-camp{position:absolute;left:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--fg-soft);white-space:nowrap;cursor:pointer;transition:color var(--dur-fast) var(--ease)}.rail-camp .pip{width:10px;height:10px;border:1.5px solid var(--fg);background:var(--bg);border-radius:999px;flex-shrink:0;transition:background var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease)}.rail-camp.active .pip{background:var(--rail-fill);border-color:var(--rail-fill);transform:scale(1.15)}.rail-camp.active{color:var(--fg)}.rail-camp .lbl{position:absolute;right:22px;background:var(--bg);padding:4px 8px;border:1px solid var(--hairline);border-radius:var(--r-xs);opacity:0;transform:translate(4px);transition:opacity var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease);pointer-events:none;display:flex;flex-direction:column;gap:1px;white-space:nowrap}.rail-camp .lbl-alt{font-family:var(--mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-faint)}.rail-camp .lbl-section{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg)}.rail-camp.active .lbl-section{color:var(--accent)}.rail-camp.active .lbl,.rail:hover .rail-camp .lbl{opacity:1;transform:translate(0)}@media(max-width:920px){.side-controls{right:6px;align-items:center}.rail{background:transparent;border:none;border-radius:0;padding:0 2px}.rail-title{display:none}.rail-track{height:240px}.rail-camp .lbl{display:none}.rail-camp .pip{width:8px;height:8px}.rail-climber{width:11px;height:11px}}