:root{--ink: #1b1d1a;--muted: #71736d;--line: #deddd6;--paper: #f7f6f1;--viewer: #242725;--white: #fffefa;--accent: #ec6236;--accent-dark: #c94924;--shadow: 0 24px 64px rgba(39, 37, 29, .12)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--viewer);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button,input[type=range]{-webkit-tap-highlight-color:transparent}.app-shell{display:grid;grid-template-columns:minmax(350px,410px) minmax(0,1fr);min-height:100vh;overflow:hidden}.control-panel{position:relative;z-index:2;height:100vh;overflow-y:auto;background:var(--paper);border-right:1px solid rgba(27,29,26,.1);box-shadow:18px 0 50px #2c292014;scrollbar-width:thin;scrollbar-color:#c8c5bb transparent}.mobile-topbar{display:none}.brand-row{display:flex;align-items:center;justify-content:space-between;height:78px;padding:0 34px;border-bottom:1px solid 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