:root{--bg: #0e1116;--panel: #161b22;--border: #30363d;--fg: #e6edf3;--fg-muted: #8b949e;--accent: #c9a84c;--accent-fg: #0e1116;--link: #58a6ff;--good: #3fb950;--warn: #d29922;--bad: #f85149;--mono: ui-monospace, "SFMono-Regular", SF Mono, Menlo, Consolas, monospace;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.55}#root{min-height:100vh}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}code,kbd,samp{font-family:var(--mono);font-size:.92em}button{font:inherit;color:inherit;background:transparent;border:1px solid var(--border);border-radius:6px;padding:6px 12px;cursor:pointer}button:hover{border-color:var(--fg-muted)}.eng-shell{max-width:72rem;margin:0 auto;padding:1.5rem}.eng-header{display:flex;align-items:center;gap:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--border);margin-bottom:2rem}.eng-header h1{font-size:1.05rem;font-weight:600;margin:0;letter-spacing:-.01em}.eng-header nav{display:flex;gap:1rem;margin-left:auto}.eng-header nav a{color:var(--fg-muted)}.eng-header nav a:hover,.eng-header nav a.active{color:var(--fg)}.eng-identity{margin-left:auto;font-size:.85rem;color:var(--fg-muted)}.eng-identity code{color:var(--fg)}.eng-panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:1.25rem 1.5rem;margin-bottom:1rem}.eng-panel h2{font-size:.9rem;font-weight:600;margin:0 0 .75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--fg-muted)}.eng-empty{color:var(--fg-muted);font-style:italic}