:root{--portal-bg: #0b1420;--portal-panel: #101d2c;--portal-border: #1c2f42;--portal-text: #e6ecf2;--portal-text-dim: #8ea0b3;--portal-accent: #FF9966;--portal-accent-deep: #FF7733;--portal-good: #4caf7d;--portal-warn: #e0a83c;--portal-bad: #d9584f}*{box-sizing:border-box}body{margin:0;background:var(--portal-bg);color:var(--portal-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}#app{min-height:100vh;display:flex;align-items:center;justify-content:center}.portal-shell-notice{max-width:420px;text-align:center;padding:32px;border:1px solid var(--portal-border);border-radius:12px;background:var(--portal-panel)}.portal-shell-notice h1{font-size:1.1rem;color:var(--portal-accent);margin:0 0 8px}.portal-shell-notice p{color:var(--portal-text-dim);font-size:.9rem;line-height:1.5}