.header h1{font-size:2.5rem;margin-bottom:10px;font-weight:700}.result.success{background:#eef8f9;color:#54595f;border:2px solid #59ffff}.result.error{background:#fef2f2;color:#dc2626;border:2px solid #fecaca}@media (max-width:1024px){.header h1{font-size:2.2rem}}@media (max-width:768px){.header h1{font-size:1.8rem;line-height:1.2}}@media (max-width:480px){.header h1{font-size:1.6rem}}