:root{color-scheme:dark;--bg:#121723;--panel:rgba(27,34,52,0.88);--line:rgba(133,154,186,0.14);--text:#eef4ff;--muted:#9cadc6;--accent:#59a5ff}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:radial-gradient(circle at top right,rgba(89,165,255,.18),transparent 28%),linear-gradient(180deg,#121723,#181f2f);color:var(--text);font-family:Segoe UI,sans-serif}body{min-height:100vh}