:root{color-scheme:dark;--bg: #0a0a0a;--card: #141414;--line: rgba(255, 255, 255, .08);--text: #f5f5f5;--muted: #9ca3af;--brand: #a0e040;--danger: #f87171;--warn: #fbbf24}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Segoe UI,Tahoma,sans-serif}button,input{font:inherit}button{cursor:pointer}a{color:var(--brand)}