:root{--bg: #0f1115;--surface: #171a21;--border: #262b36;--text: #e7e9ee;--muted: #9aa3b2;--accent: #4ade80;--err: #f87171;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.55}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text)}.shell{min-height:100%;display:grid;place-items:center;padding:2rem}.card{max-width:34rem;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:2.5rem}.eyebrow{margin:0 0 .75rem;font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}h1{margin:0 0 .75rem;font-size:1.9rem;letter-spacing:-.02em}.lead{margin:0 0 1.75rem;color:var(--muted)}.probe{display:flex;align-items:center;gap:.6rem;padding:.75rem 1rem;background:var(--bg);border:1px solid var(--border);border-radius:10px;font-size:.9rem}.dot{width:9px;height:9px;border-radius:50%;flex:none}.dot--idle{background:var(--muted);animation:pulse 1.2s ease-in-out infinite}.dot--ok{background:var(--accent)}.dot--err{background:var(--err)}@keyframes pulse{0%,to{opacity:.4}50%{opacity:1}}