:root{font-family:system-ui,Arial}body{margin:0;background:#0b0f14;color:#e8eef6}.container{max-width:900px;margin:0 auto;padding:16px}.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}.brand{font-weight:700}.links{display:flex;gap:12px}.links a{color:#b8c7dd;text-decoration:none;padding:8px 10px;border-radius:10px}.links a.active{background:#182233;color:#fff}.card{background:#111827;border:1px solid #22314a;border-radius:16px;padding:16px}.form{display:flex;gap:10px;margin-top:12px}.input{flex:1;padding:12px;border-radius:12px;border:1px solid #22314a;background:#0b1220;color:#e8eef6}.btn{padding:12px 14px;border-radius:12px;border:0;background:#2b6cff;color:#fff;cursor:pointer}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.secondary{background:#1f2b3f;border:1px solid #22314a}.error{margin-top:12px;padding:10px;border-radius:12px;background:#2a1212;border:1px solid #5a1d1d}.result{margin-top:14px;padding:12px;border-radius:12px;background:#0b1220;border:1px solid #22314a}.label{font-size:12px;opacity:.8;margin-bottom:6px}.link{word-break:break-all;color:#8ab4ff}.codeBox{font-size:22px;font-weight:700;letter-spacing:2px}.row{margin-top:10px;display:flex;gap:10px}.formStack{display:flex;flex-direction:column;gap:12px;margin-top:14px;align-items:center}.formStack .input{width:min(700px,100%)}.centerBtn{width:160px}.centerRow{justify-content:center}