*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;font-size:16px;line-height:1.5;color:#111;background:#f7f7f8}a{color:#0366d6;text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer}button,input,select,textarea{font:inherit}.container{max-width:960px;margin:0 auto;padding:1.5rem}.stack>*+*{margin-top:1rem}.card{background:#fff;border:1px solid #e0e0e3;border-radius:8px;padding:1rem 1.25rem}.field{display:flex;flex-direction:column;gap:.375rem}.field label{font-weight:500;font-size:.9rem}.field input,.field textarea{padding:.5rem .625rem;border:1px solid #d0d0d4;border-radius:6px;background:#fff}.field input:focus,.field textarea:focus{outline:2px solid #0366d6;outline-offset:0;border-color:transparent}.btn{display:inline-block;padding:.55rem 1rem;border:1px solid #0366d6;border-radius:6px;background:#0366d6;color:#fff;font-weight:500}.btn:hover{background:#024aa0;border-color:#024aa0;text-decoration:none}.btn-secondary{background:#fff;color:#0366d6}.btn-secondary:hover{background:#f0f6ff;color:#0366d6}.alert{padding:.75rem 1rem;border-radius:6px;border:1px solid}.alert-error{background:#fef1f2;border-color:#fecaca;color:#b91c1c}.alert-success{background:#ecfdf5;border-color:#a7f3d0;color:#047857}.muted{color:#6b7280}.grid{display:grid;grid-gap:.5rem;gap:.5rem}.grid-thumbs{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.grid-thumbs img{width:100%;height:160px;object-fit:cover;border-radius:6px;background:#e5e7eb}