:root{--ink:#101828;--muted:#667085;--line:#e4e7ec;--surface:#fff;--soft:#f7f9fc;--brand:#2457d6;--brand-dark:#173b95;--success:#15803d;--success-soft:#ecfdf3;--warning-soft:#fffbeb;--shadow:0 20px 60px #1018281f;color:var(--ink);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;background:#f4f7fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.58}.loading-screen{min-height:100vh;color:var(--muted);place-items:center;font-weight:800;display:grid}.participant-app{min-height:100vh;padding-bottom:48px}.toast-stack{z-index:30;pointer-events:none;gap:10px;width:min(360px,100vw - 32px);display:grid;position:fixed;top:18px;right:18px}.toast{border:1px solid 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