:root{--shell-bg: #f3f6f8;--shell-ink: #111827;--shell-muted: #4b5563;--shell-card: #ffffff;--shell-border: #d6dee6}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--shell-ink);background:var(--shell-bg)}#root{min-height:100vh}@keyframes contentFade{0%{opacity:0}to{opacity:1}}