*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:#f5f5f5;color:#333}.btn{padding:10px 20px;border:none;border-radius:6px;cursor:pointer;font-weight:500;transition:all .2s}.btn-primary{background-color:#2563eb;color:#fff}.btn-primary:hover{background-color:#1d4ed8}.input{width:100%;padding:8px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px}.input:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 3px #2563eb1a}.card{background:#fff;border-radius:8px;border:1px solid #e5e7eb;box-shadow:0 1px 3px #0000001a}