:root{--accent:#0f766e;--muted:#6b7280}*{box-sizing:border-box}body{font-family:Inter,system-ui,Arial;margin:0;background:#f7f7fb;color:#0f172a}.app{max-width:900px;margin:28px auto;padding:20px}.card{background:#fff;padding:16px;border-radius:10px;margin-bottom:12px;box-shadow:0 6px 18px #0c0c0f0f}.row{display:flex;gap:8px}.input,button,select,textarea{padding:8px;border-radius:8px;border:1px solid #e6e9ee;font-size:14px}button{background:var(--accent);color:#fff;border:none;cursor:pointer}.muted{color:var(--muted)}.items .item{display:flex;justify-content:space-between;padding:8px;border-radius:8px;border:1px dashed #e6e9ee;margin-bottom:8px}.pre{background:#0f172a;color:#fff;padding:12px;border-radius:8px;font-size:13px;white-space:pre-wrap}.nav{display:flex;gap:8px;justify-content:flex-end;margin-bottom:12px}.link{background:transparent;border:1px solid #e6e9ee;padding:8px;border-radius:8px;cursor:pointer}