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48px);box-shadow:0 18px 48px var(--shadow);color:var(--text);border-radius:6px;padding:12px 16px;font-size:14px;position:fixed;bottom:30px;left:50%;transform:translate(-50%)}@media (width<=860px){body{overflow:auto}.app-shell{min-height:100svh;padding:18px}.viewport{position:fixed}.topbar,.tool-panel,.tracking-panel{width:100%;position:relative;inset:auto}.topbar{pointer-events:auto;margin-bottom:24px;display:block}.system-status{justify-content:flex-start;margin-top:14px}.tool-panel{margin-top:36svh}.tracking-panel{margin-top:14px}h1{max-width:12ch}}