:root{color-scheme:dark;background-color:#121212;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;--border: none;--border-radius: 16px}*{user-select:none;-webkit-user-select:none}body{padding:8px;margin:0 auto;max-width:max(1000px,60vw)}.header{display:flex;gap:8px;align-items:center}input,button,a.header-button{border:var(--border);background-color:#1e1e1e;color:#fff}input,button{font-size:1em;border-radius:8px;padding:6px}button{cursor:pointer}