*{box-sizing:border-box}
html,body{height:100%;margin:0;overflow-x:hidden}
body{font-family:Inter,Segoe UI,Arial,sans-serif;color:#0f172a;background:#f7f9fc}
button{cursor:pointer;font:inherit}
input,select,textarea{font:inherit}
#cem-shell{height:100vh;height:100dvh;display:flex;align-items:stretch;max-width:100vw}
#cem-sidebar{overflow-y:auto}
#cem-main{flex:1;min-width:0;display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}
#cem-view{flex:1;overflow-y:auto;overflow-x:hidden;min-width:0}