:root{--ground:#fff;--ink-25:#bfbfbf;--ink-50:gray;--ink-75:#404040;--ink-100:#000;color-scheme:light}html,body{overscroll-behavior:none;background:var(--ground);height:100%;color:var(--ink-100);margin:0;font:13px/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow:hidden}#stage{touch-action:none;-webkit-user-select:none;user-select:none;cursor:default;width:100%;height:100%;display:block;position:fixed;inset:0}#start,#error{background:var(--ground);flex-direction:column;display:flex;position:fixed;inset:0}#start[hidden],#error[hidden]{display:none}#start{cursor:pointer;justify-content:center;align-items:center;gap:14px}#start-title{letter-spacing:.42em;text-indent:.42em;margin:0}#start-reason{max-width:34em;color:var(--ink-50);text-align:center;margin:0;padding:0 24px}#error{gap:12px;padding:40px;overflow:auto}#error-title{border-bottom:1px solid var(--ink-25);letter-spacing:.42em;text-indent:.42em;margin:0;padding-bottom:12px}#error-text{max-width:68em;font:inherit;color:var(--ink-75);white-space:pre-wrap;word-break:break-word;margin:0}#error-hint{color:var(--ink-50);margin:0}