:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif}body{color:#d1e3f8;background:#0b0f14;margin:0}.wrap{background:#111826;border-radius:16px;max-width:720px;margin:10vh auto;padding:24px;box-shadow:0 10px 30px #00000059}h1{margin:0 0 16px}button{cursor:pointer;color:#fff;background:#2563eb;border:none;border-radius:12px;padding:12px 16px;font-weight:600}button:hover{filter:brightness(1.1)}.muted{opacity:.75;font-size:.9rem}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}.error{color:#fecaca}