:root{color-scheme:dark;--bg:#0a0e16;--panel:rgba(22,26,35,0.86);--line:rgba(255,255,255,0.08);--text:#f5f7fa;--muted:#9aa7b7;--accent:#ffb020}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:linear-gradient(135deg,rgba(255,176,32,.12),transparent 30%),linear-gradient(180deg,#0a0e16,#121926);color:var(--text);font-family:Segoe UI,sans-serif}body{min-height:100vh}