:root{--bg: #0b0d10;--panel: #12161c;--line: #1e2630;--text: #e8edf2;--muted: #8b9aab;--ok: #3dd68c;--warn: #f5c542;--err: #ff6b6b;--accent: #7aa2ff}html,body{height:100%;margin:0}body{font-family:IBM Plex Sans,system-ui,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}*{box-sizing:border-box}button{font:inherit}